Evaluation device, evaluation system, user terminal, evaluation method and evaluation program

Abstract

To provide an evaluation device allowing a user to easily acquiring an environmental load evaluation value indicating an environmental load relating to a life cycle of a building.SOLUTION: An evaluation device includes: a reception unit that receives member information relating to a member constituting a building; a calculation unit that calculates an environmental load evaluation value indicating an environmental load relating to a life cycle of the building on the basis of the member information; and an output unit that outputs the environmental load evaluation value. The calculation unit calculates the amount of emission of at least one of a first amount of emission of a first greenhouse gas discharged due to the building during a period from the construction of the building to the disposal and a second amount of emission of a second greenhouse gas discharged due to an operation of the building, and calculates the environmental load evaluation value on the basis of at least one of the calculated amounts of emission.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to an evaluation device, an evaluation system, a user terminal, an evaluation method, and an evaluation program. [Background technology]

[0002] LCA (Life Cycle Assessment) is known as a method for comprehensively and quantitatively assessing environmental loads throughout a life cycle. One known LCA method is to assess the environmental loads associated with the entire life cycle of a building based on the carbon dioxide emissions caused by the building (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-202550 Summary of the Invention [Problem to be solved by the invention]

[0004] In a method for evaluating the environmental load associated with the life cycle of a building, it has been desired that the user be able to easily obtain the evaluation value of the environmental load.

[0005] In view of the above circumstances, the present disclosure aims to provide an evaluation device, an evaluation system, a user terminal, an evaluation method, and an evaluation program that make it easy for users to obtain an environmental load evaluation value that represents the environmental load related to the life cycle of a building. [Means for solving the problem]

[0006] In order to achieve the above-mentioned objective, the evaluation device of the present disclosure comprises a receiving unit that receives component information related to components that constitute a building, a calculation unit that calculates an environmental load assessment value that represents the environmental load related to the life cycle of the building based on the component information, and an output unit that outputs the environmental load assessment value, wherein the calculation unit calculates, based on the component information, at least one of a first emission amount of a first greenhouse gas emitted due to the building from its construction to its disposal and a second emission amount of a second greenhouse gas emitted due to the operation of the building, and calculates the environmental load assessment value based on the calculated at least one emission amount.

[0007] In order to achieve the above-mentioned object, the evaluation system according to the present disclosure comprises the above-mentioned evaluation device and a user terminal capable of communicating with the evaluation device, wherein the evaluation device is a server device capable of communicating with the user terminal, and the user terminal has an input unit for inputting the component information received by the reception unit, and a display unit for displaying the information output from the output unit.

[0008] In order to achieve the above-mentioned object, a user terminal according to the present disclosure is a user terminal capable of communicating with an evaluation device that calculates an environmental load assessment value that represents the environmental load related to the life cycle of a building, and is equipped with an input unit and a display unit, wherein the evaluation device has a reception unit that receives component information related to components that constitute the building, a calculation unit that calculates the environmental load assessment value based on the component information, and an output unit that outputs the environmental load assessment value, wherein the calculation unit calculates, based on the component information, at least one of a first emission amount of a first greenhouse gas emitted due to the building from its construction to its disposal and a second emission amount of a second greenhouse gas emitted due to the operation of the building, and calculates the environmental load assessment value based on the calculated at least one emission amount, wherein the input unit is a part for inputting the component information received by the reception unit, and the display unit is a part that displays information output from the evaluation device.

[0009] In order to achieve the above-mentioned object, the evaluation method disclosed herein includes receiving component information regarding components that constitute a building, calculating, based on the component information, at least one of a first emission amount of a first greenhouse gas emitted due to the building from its construction to its disposal and a second emission amount of a second greenhouse gas emitted due to the operation of the building, calculating an environmental load evaluation value that represents the environmental load related to the life cycle of the building based on the calculated at least one emission amount, and outputting the environmental load evaluation value.

[0010] To achieve the above object, an evaluation program according to the present disclosure causes a computer to execute the above evaluation method. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram illustrating an evaluation system according to a first embodiment. [Figure 2] FIG. 1 is a block diagram showing an evaluation system according to a first embodiment. [Figure 3] FIG. 1 is a diagram illustrating an example of a building. [Figure 4] 3 is a flowchart showing an evaluation method according to the first embodiment. [Figure 5] 3 is a flowchart showing a part of the evaluation method according to the first embodiment. [Figure 6] FIG. 4 is a diagram showing an example of heat balance in a heating season in the first embodiment. [Figure 7] FIG. 4 is a diagram showing an example of heat balance in a cooling season in the first embodiment. [Figure 8] 6 is a flowchart showing another part of the evaluation method according to the first embodiment. [Figure 9] FIG. 10 is a diagram showing another example of the heat balance in the heating season in the first embodiment. [Figure 10] FIG. 10 is a diagram showing another example of the heat balance in the cooling season of the first embodiment. [Figure 11] 10 is a flowchart showing still another part of the evaluation method according to the first embodiment. [Figure 12]FIG. 3 is a diagram showing an example of an input screen of the evaluation system according to the first embodiment. [Figure 13] FIG. 2 is a diagram showing an example of a first output screen of the evaluation system according to the first embodiment. [Figure 14] FIG. 10 is a diagram showing an example of a second output screen of the evaluation system according to the first embodiment. [Figure 15] FIG. 10 is a diagram illustrating an evaluation system according to a second embodiment. [Figure 16] FIG. 10 is a block diagram showing an evaluation system according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] (First embodiment) The evaluation system 100 of this embodiment shown in FIGS. 1 and 2 is a system capable of executing an evaluation method for evaluating the environmental load associated with the entire life cycle of a building B. FIG. 3 shows an example of a building B evaluated by the evaluation system 100. As shown in FIG. 3, the building B is a building having a first room R1 and a second room R2. The building B is, for example, a dwelling unit. The first room R1 is, for example, a living room. The first room R1 is a room surrounded by a first exterior wall Wa1, a second exterior wall Wa2, a third exterior wall Wa3, and a partition wall Wa7. An air conditioner AC, lighting L, and a television T are installed inside the first room R1. The first exterior wall Wa1, the second exterior wall Wa2, and the third exterior wall Wa3 are walls that separate the interior of the first room R1 from the exterior of the building B. A first window Wd1 is installed in the first exterior wall Wa1. A second window Wd2 is installed in the second exterior wall Wa2. A partition wall Wa7 separates the interior of the first room R1 from the interior of the second room R2. A door D connecting the interior of the first room R1 to the interior of the second room R2 is installed in the partition wall Wa7.

[0013] The second room R2 is adjacent to the first room R1. The second room R2 is a room that does not have an air conditioner AC installed. The second room R2 is a room surrounded by a fourth exterior wall Wa4, a fifth exterior wall Wa5, a sixth exterior wall Wa6, and a partition wall Wa7. The fourth exterior wall Wa4, the fifth exterior wall Wa5, and the sixth exterior wall Wa6 are walls that separate the interior of the second room R2 from the outside of the building B. A third window Wd3 is installed in the fifth exterior wall Wa5.

[0014] The first exterior wall Wa1, the second exterior wall Wa2, the third exterior wall Wa3, the fourth exterior wall Wa4, the fifth exterior wall Wa5, the sixth exterior wall Wa6, the partition wall Wa7, the first window Wd1, the second window Wd2, the third window Wd3, and the door D are each components that make up part of the building B. The first exterior wall Wa1, the second exterior wall Wa2, the third exterior wall Wa3, the partition wall Wa7, the door D, the first window Wd1, and the second window Wd2 are first components that make up the first room R1. The fourth exterior wall Wa4, the fifth exterior wall Wa5, the sixth exterior wall Wa6, the partition wall Wa7, the door D, and the third window Wd3 are second components that make up the second room R2. In the following description, unless otherwise specified, the exterior walls will be collectively referred to as the exterior walls Wa.

[0015] The first window Wd1, the second window Wd2, and the third window Wd3 are windows and fittings having a window frame as a frame. The types of the first window Wd1, the second window Wd2, and the third window Wd3 are not particularly limited. The first window Wd1, the second window Wd2, and the third window Wd3 may be windows having a resin window frame, windows having a metal window frame, or windows having a window frame made of multiple materials such as resin and metal. In the following description, when there is no particular distinction between the windows, they will be collectively referred to as windows Wd. The door D is a fitting having a door frame as a frame.

[0016] As shown in FIG. 1, the evaluation system 100 includes an evaluation device 10 and a user terminal 20. The user terminal 20 can communicate with the evaluation device 10 via a communication network NW, such as an IP (Internet Protocol) network. In this embodiment, the user terminal 20 is a personal computer. The user terminal 20 may be any terminal that can communicate with the evaluation device 10. The user terminal 20 may be, for example, a tablet terminal or a smart device such as a smartphone.

[0017] The user terminal 20 includes a computer main body 20a, an input unit 23, and a display unit 24. As shown in FIG. 2, the computer main body 20a includes a second communication unit 21 and a second control unit 22. The second communication unit 21 can communicate with the first communication unit 11 of the evaluation device 10 via the communication network NW. The second control unit 22 controls various operations of the user terminal 20. The second control unit 22 is a processor such as a CPU. The input unit 23 is a unit that allows a user to input information to the user terminal 20 through operations. The input unit 23 is a unit for inputting component information BI to be received by the receiving unit 14 (described later). The display unit 24 is a unit that can display various types of information. The display unit 24 is a unit that displays information output from the output unit 16 (described later). As shown in FIG. 1, in this embodiment, the input unit 23 is a mouse and keyboard connected to the computer main body 20a. In this embodiment, the display unit 24 is a display screen connected to the computer main body 20a. For example, if the user terminal 20 is a smart device, the input unit 23 and the display unit 24 are the screen of the smart device.

[0018] The evaluation device 10 is a computer installed with an evaluation program that executes an evaluation method for evaluating the environmental load associated with the life cycle of building B. In this embodiment, the evaluation program installed in the evaluation device 10 is capable of executing the evaluation method for evaluating the environmental load associated with the entire life cycle of building B. The evaluation device 10 is a server device that can communicate with a user terminal 20. The evaluation device 10 is installed, for example, in a location different from the location of a user who uses the user terminal 20. The user operates the user terminal 20 to start the evaluation program stored in the evaluation device 10, which is a server device. The evaluation program screen is displayed on a browser started on the display unit 24 of the user terminal 20.

[0019] The evaluation device 10 has a first communication unit 11, a first control unit 12, and a storage unit 13. The first communication unit 11 is capable of wirelessly communicating with a second communication unit 21 of the user terminal 20 via a communication network NW. The first communication unit 11 transmits data output from the first control unit 12 to the second communication unit 21. The first communication unit 11 receives data sent from the second communication unit 21. The data received by the first communication unit 11 is input to the first control unit 12.

[0020] The evaluation program of this embodiment and various data used by the evaluation program are stored in the storage unit 13. The various data used by the evaluation program may be stored in a storage unit (not shown) provided outside the evaluation device 10. In this case, the evaluation device 10 reads information from the storage unit (not shown) via the first communication unit 11.

[0021] The first control unit 12 is capable of executing the evaluation method of this embodiment by executing the evaluation program stored in the storage unit 13. The first control unit 12 has a receiving unit 14, a calculating unit 15, and an output unit 16.

[0022] The reception unit 14 can receive information input from outside to the evaluation device 10. The reception unit 14 receives information sent from the user terminal 20 to the first communication unit 11 via the second communication unit 21. The information received by the reception unit 14 includes component information BI regarding components constituting the building B input by the user to the input unit 23 when the evaluation program of this embodiment is being executed. The components constituting the building B include walls, ceilings, roofs, and fittings with frames. The fittings with frames include windows Wd and doors D. The windows Wd include the first window Wd1, second window Wd2, and third window Wd3 shown in FIG. 3. In this embodiment, the windows Wd correspond to a "predetermined component" constituting part of the building B.

[0023] The component information BI for the window Wd includes product information and dimensional information for the window Wd. The product information for the window Wd includes the product series name of the window Wd, the product name of the window Wd, the type of material comprising the window Wd, the name of the material comprising the window Wd, the model name of the window Wd, the percentage of recycled materials used in the materials used for the window Wd, and the thermal transmittance of the window Wd. The type of material comprising the window Wd includes the type of material comprising the window frame. Examples of materials comprising the window frame include wood, resin, metal, and composites of resin and metal. Examples of metal comprising the window frame include aluminum. The type of material comprising the window Wd includes the type of material comprising the frame and the type of window glass. The type of material comprising the frame is the same as the type of material comprising the window frame. Examples of types of window glass include double-pane glass and triple-pane glass. Examples of model names for the window Wd include sliding windows, double-hung windows, and casement windows. Examples of recycled materials used for the window Wd include recycled aluminum. An example of an aluminum recycled material is the low-carbon aluminum extrusion material "PremiAL (registered trademark)."

[0024] The dimension information of the window Wd includes the height of the window Wd glass, the width of the window Wd glass, the thickness of the window Wd glass, the area of ​​the window glass, the circumference of the window glass, the height of the window frame, the width of the window frame, the thickness of the window frame, the circumference of the window frame, and the number of windows Wd installed in the building B.

[0025] The component information BI input to the input unit 23 and accepted by the accepting unit 14 is information required for calculating a first emission amount EM1 of a first greenhouse gas EC and a second emission amount EM2 of a second greenhouse gas OC, which will be described later, by the calculating unit 15. The component information BI regarding components other than the windows Wd that constitute the building B may include information similar to the component information BI regarding the windows Wd described above, or may include less information than the component information BI regarding the windows Wd described above, or may include more information than the component information BI regarding the windows Wd described above.

[0026] The calculation unit 15 performs various calculations based on various information to calculate various values. When the evaluation program of this embodiment is being executed, the calculation unit 15 calculates an environmental load evaluation value EL, which represents the environmental load related to the life cycle of building B, based on the component information BI received by the reception unit 14. The environmental load evaluation value EL may be any value that can represent the environmental load. Examples of the environmental load evaluation value EL include greenhouse gas emissions, greenhouse gas emission reduction rates, values ​​obtained by replacing greenhouse gas emissions with other evaluation parameters, and evaluation ranks determined in stages according to greenhouse gas emissions. Examples of greenhouse gases include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and fluorocarbons.

[0027] The calculation unit 15 calculates a first emission amount EM1 of a first greenhouse gas EC emitted due to building B from its construction to its disposal and a second emission amount EM2 of a second greenhouse gas OC emitted due to the operation of building B, based on the component information BI. The component information BI used at this time is information input to the input unit 23 and accepted by the acceptance unit 14, and includes various information on each component that makes up building B. The first greenhouse gas EC emitted due to building B from its construction to its disposal is called embodied carbon. The second greenhouse gas OC emitted due to the operation of building B is called operational carbon.

[0028] The first greenhouse gas EC, i.e., embodied carbon, includes greenhouse gases emitted due to the construction of Building B, greenhouse gases emitted due to the repair of Building B, greenhouse gases emitted due to the renewal of Building B, and greenhouse gases emitted due to the disposal of Building B. Greenhouse gases emitted due to the construction of Building B include greenhouse gases emitted to procure raw materials for the components that make up Building B, greenhouse gases emitted to manufacture the components that make up Building B, greenhouse gases emitted to transport the components that make up Building B to the construction site, and greenhouse gases emitted when assembling the components to build Building B. Greenhouse gases emitted due to the disposal of Building B include greenhouse gases emitted to demolish Building B and greenhouse gases emitted to treat the components of the demolished Building B as industrial waste. The second greenhouse gas OC, that is, operational carbon, includes greenhouse gases emitted due to the air conditioner AC, lighting L, or hot water heaters and cooking appliances (not shown) used in the building B.

[0029] As shown in Fig. 4, when component information BI related to building B is input (step S1), calculation unit 15 calculates a first greenhouse gas EC, i.e., a first emission amount EM1 of embodied carbon, attributable to building B based on the input component information BI (step S2). In this embodiment, calculation unit 15 executes step S2 in accordance with the flowchart shown in Fig. 5. As shown in Fig. 5, in step S2, calculation unit 15 calculates a third emission amount EM3 of the first greenhouse gas EC emitted attributable to building B based on the component information BI by a calculation method used in the "LCCM compliance assessment tool" used for LCCM (registered trademark) housing certification (step S2a). In this embodiment, the "LCCM compliance assessment tool" corresponds to the "predetermined assessment tool."

[0030] LCCM (Life Cycle Carbon Minus) housing, advocated by the Japanese government, is a type of housing that achieves a negative balance of greenhouse gas emissions throughout its lifecycle. LCCM housing certification is carried out by the Housing and Building SDGs Promotion Center, a general incorporated foundation. The "LCCM Conformity Assessment Tool" used for LCCM housing certification was developed by the Japan Sustainable Building Association (JSA). As of April 2024, the "LCCM Conformity Assessment Tool," which uses "LCCM_2019v1.0" as the evaluation software, was published on the JSA website. The "LCCM Conformity Assessment Tool" uses various data about Building B in the "Building LCA Tool" to calculate the primary greenhouse gas EC emitted by Building B. The "Building LCA Tool" is published on the website of the Architectural Institute of Japan's Global Environment Committee. As of April 2024, version 4.04 of the "Building LCA Tool" was published. In this embodiment, a program similar to the "LCCM conformance assessment tool" and various data related to building B in the "Building LCA tool" are stored in the memory unit 13. In step S2a, the calculation unit 15 calculates the third emissions EM3 ​​from these programs and data stored in the memory unit 13 and the component information BI for building B. The program similar to the "LCCM conformance assessment tool" used by the calculation unit 15 in step S2a may be a program similar to any version of the "LCCM conformance assessment tool." In step S2a, the calculation unit 15 may use, for example, a program similar to the "LCCM conformance assessment tool" using "LCCM_2019v1.0" as the evaluation software used. The various data related to building B in the "Building LCA tool" used by the calculation unit 15 in step S2a may be various data related to building B in any version of the "Building LCA tool." In step S2a, the calculation unit 15 may use, for example, various data related to building B in the "Building LCA tool" version 4.04.

[0031] The third emission amount EM3 is the same as the first greenhouse gas EC emission amount calculated by the "LCCM Compliance Assessment Tool" used for LCCM housing certification. The third emission amount EM3 is the first greenhouse gas EC emission amount equivalent to the sum of the LCCO2 (life cycle CO2) emissions for "construction" calculated by the "LCCM Compliance Assessment Tool" and the LCCO2 emissions for "repair, renewal, and demolition" calculated by the "LCCM Compliance Assessment Tool."

[0032] The calculation unit 15 calculates a fourth emission amount EM4 of the first greenhouse gas EC that is emitted due to windows Wd, out of the third emission amount EM3 (step S2b). The various data related to building B in the above-mentioned "building LCA tool" includes information such as the average number of windows Wd included in building B depending on the site area of ​​building B, and the type of windows Wd that are typically installed in building B depending on the structural type and class of building B. The calculation unit 15 calculates a fourth emission amount EM4 of the first greenhouse gas EC that is emitted due to windows Wd, out of the third emission amount EM3, based on the same data as the "building LCA tool" stored in the memory unit 13.

[0033] The calculation unit 15 calculates the first greenhouse gas EC emitted due to the window Wd, i.e., the fifth emission amount EM5 of embodied carbon, using the component information BI regarding the window Wd and the greenhouse gas emission intensity regarding the window Wd (step S2c).

[0034] The greenhouse gas emission intensity is the amount of greenhouse gas emitted per unit of economic activity. Various greenhouse gas emission intensity values ​​necessary for calculating the first greenhouse gas EC emitted due to the window Wd are stored in the memory unit 13. The greenhouse gas emission intensity values ​​stored in the memory unit 13 include each greenhouse gas emission intensity value necessary for calculating the amount of greenhouse gas emitted due to the procurement of raw materials that make up the window Wd, the manufacturing of the window Wd, the transportation of the window Wd, and the disposal of the window Wd.

[0035] The greenhouse gas emission intensity for the procurement of raw materials for a window (Wd) is a unit that indicates the amount of greenhouse gases emitted from the procurement of a unit mass of raw materials. Greenhouse gas emissions from the procurement of raw materials include those emitted from the energy consumed to produce ingots of the raw materials. A greenhouse gas emission intensity for the procurement of raw materials for a window (Wd) is set for each raw material. Raw materials for a window (Wd) include aluminum, resin, glass, recycled materials, and other materials. The greenhouse gas emission intensity for each raw material can be obtained, for example, from the data in the "Building LCA Tool" mentioned above, the data in the "LCI Database IDEA" developed by the National Institute of Advanced Industrial Science and Technology and sold by the Japan Sustainable Management Organization, or the "LCA Database" published by the Japan Lifecycle Assessment Association (JLCA). The greenhouse gas emission intensity for glass procurement can also be obtained from data in reports published by the Flat Glass Association.

[0036] For example, if the greenhouse gas emission unit value for aluminum indicates the amount of greenhouse gases emitted when procuring 1 kg of aluminum, and the mass of aluminum among the raw materials constituting the target window Wd is 10 kg, then multiplying the greenhouse gas emission unit value for aluminum by 10 kg will determine the amount of greenhouse gases emitted due to procuring the aluminum constituting the target window Wd. The calculation unit 15 calculates the mass of each raw material constituting the window Wd from the product information and dimensional information in the input component information BI for the window Wd. The memory unit 13 stores information on the mass of the constituent materials per certain size for each window Wd identified by, for example, the product name of the window Wd. Using this information, the calculation unit 15 calculates the mass of each raw material constituting all windows Wd installed in the building B from the window Wd identified by the component information BI, the size of the window Wd, and the number of windows Wd. The calculation unit 15 multiplies the calculated mass of each raw material by each greenhouse gas emission unit corresponding to each raw material to calculate the total emission of the first greenhouse gas EC related to the procurement of the raw materials that make up all the windows Wd installed in the building B.

[0037] The greenhouse gas emission intensity for the manufacture of a window Wd is a unit that indicates the amount of greenhouse gases emitted per unit time due to the use of each piece of equipment, including processing equipment, used in the manufacture of the window Wd. The greenhouse gases emitted due to the use of each piece of equipment include the greenhouse gases emitted due to the energy consumed by the use of each piece of equipment. The greenhouse gas emission intensity for the manufacture of a window Wd is set for each piece of equipment used in the manufacture of the window Wd. The greenhouse gas emission intensity for the manufacture of a window Wd is obtained from a database similar to that for the greenhouse gas emission intensity for the procurement of raw materials that make up the window Wd. The greenhouse gas emission intensity for resin processing may be obtained from data published in the "Report on Inventory Data Survey for Resin Processing" published by the Plastic Waste Management Institute. The memory unit 13 stores the usage time of each piece of equipment used to manufacture one window Wd of a certain size. The usage time is obtained from data related to the production performance of the factory that manufactures the window Wd. The calculation unit 15 uses the usage time to calculate the total usage time for each device to be used to manufacture all of the windows Wd installed in the building B, from the windows Wd, the size of the windows Wd, and the number of windows Wd specified by the component information BI. The calculation unit 15 multiplies the total usage time for each device by the greenhouse gas emission intensity corresponding to each device, to calculate the total emission of the first greenhouse gas EC related to the manufacture of all of the windows Wd installed in the building B.

[0038] The greenhouse gas emission intensity associated with the transportation of a window Wd is a unit of measurement that indicates the amount of greenhouse gas emitted when an object of a unit mass is transported by vehicle over a unit distance. Greenhouse gas emissions associated with the transportation of an object by vehicle include greenhouse gases emitted when the vehicle consumes energy while traveling. The greenhouse gas emission intensity associated with the transportation of a window Wd can be obtained, for example, from data in the aforementioned "LCI Database IDEA." The memory unit 13 stores information regarding the average mass of packaging materials used to package the window Wd for each size of window Wd and information regarding the average distance the manufactured window Wd is transported. The calculation unit 15 calculates the total mass of the window Wd during transportation from the mass of the window Wd identified by the component information BI, the mass of the packaging materials used to package the window Wd, and the number of windows Wd installed in the building B. The calculation unit 15 calculates the total emission of the first greenhouse gas EC related to the transportation of all windows Wd installed in the building B by multiplying the greenhouse gas emission unit related to the transportation of the window Wd by the total mass of the window Wd and the average value of the distance the window Wd is transported or a preset value for the distance the window Wd is transported.

[0039] The greenhouse gas emission intensity for the disposal of a window Wd is a unit that indicates the amount of greenhouse gases emitted when a unit mass of components that make up the window Wd is discarded. The greenhouse gas emission intensity for the disposal of a window Wd is set for each material that makes up the window Wd. The greenhouse gas emission intensity for the disposal of a window Wd is determined for each material that makes up the window Wd, taking into account factors such as the recycling rate. For example, in the case of aluminum profiles that make up the window Wd, 96% of the discarded aluminum profiles are recycled into recycled metal, and 4% are landfilled. For example, in the case of plastic profiles that make up the window Wd, 60% of the discarded plastic profiles are used for heat recovery, and 40% are landfilled. The greenhouse gases emitted when the components that make up the window Wd are discarded include greenhouse gases emitted when the discarded components are recycled into recycled metal, greenhouse gases emitted when the discarded components are incinerated to recover heat, and greenhouse gases emitted when the components are landfilled. Greenhouse gases generated when materials are landfilled include those generated by transporting the materials to be landfilled by vehicle and those generated by using heavy machinery when landfilling the materials. The greenhouse gas emission intensity for the disposal of windows Wd is obtained by referring to the Industrial Waste Discharge and Treatment Status Survey Report published by the Ministry of the Environment of Japan. The calculation unit 15 calculates the total mass of each component constituting each window Wd installed in building B based on the component information BI. The calculation unit 15 calculates the greenhouse gas emissions emitted due to the disposal of each component constituting window Wd by multiplying each greenhouse gas emission intensity for the disposal of window Wd, determined for each component material, by each total mass. The calculation unit 15 calculates the first greenhouse gas EC emissions for the disposal of all windows Wd installed in building B by adding up the greenhouse gas emissions calculated for each component constituting window Wd.

[0040] The calculation unit 15 calculates a fifth emission amount EM5 of the first greenhouse gas EC emitted due to the window Wd by adding up the emissions of the first greenhouse gas EC emitted due to the procurement of raw materials that make up the window Wd, the manufacture of the window Wd, the transportation of the window Wd, and the disposal of the window Wd.

[0041] The amount of first greenhouse gas EC emitted due to the construction of the window Wd and the amount of first greenhouse gas EC emitted due to the dismantling of the window Wd are sufficiently smaller than the amount of first greenhouse gas EC emitted during the procurement of raw materials constituting the window, the manufacturing of the window Wd, the transportation of the window Wd, and the disposal of the window Wd. The amount of first greenhouse gas EC emitted due to the construction of the window Wd and the amount of first greenhouse gas EC emitted due to the dismantling of the window Wd are excluded from the fifth emission amount EM5 of the first greenhouse gas EC calculated in step S2c of this embodiment. In step S2c, the calculation unit 15 may calculate the fifth emission amount EM5 including the amount of first greenhouse gas EC emitted due to the construction of the window Wd and the amount of first greenhouse gas EC emitted due to the dismantling of the window Wd.

[0042] The calculation unit 15 calculates the first emission amount EM1 by subtracting the fourth emission amount EM4 from the third emission amount EM3 and adding the fifth emission amount EM5 to the third emission amount EM3 (step S2d). In step S2d, the calculation unit 15 replaces the portion of the third emission amount EM3 corresponding to the emission amount of the first greenhouse gas EC calculated by the "LCCM conformity assessment tool" that is attributable to the window Wd with the fifth emission amount EM5 of the first greenhouse gas EC that is attributable to the window Wd, which is calculated from the greenhouse gas emission intensity units for the window Wd stored in the memory unit 13 and the input material information BI. In step S2d, the calculation unit 15 corrects the portion of the third emission amount EM3 corresponding to the emission amount of the first greenhouse gas EC calculated by the "LCCM conformity assessment tool" that is attributable to the window Wd, based on the greenhouse gas emission intensity units for the window Wd stored in the memory unit 13 and the input material information BI.

[0043] As shown in FIG. 4, the calculation unit 15 calculates the second greenhouse gas OC emitted due to the operation of building B, i.e., the second emission amount EM2 of operational carbon, based on the input component information BI (step S3). The second emission amount EM2 of the second greenhouse gas OC is obtained from the amount of energy consumed within building B. For example, if heat is easily transferred between the inside and outside of building B through windows Wd and walls, the energy consumption of the air conditioner AC required to maintain a constant temperature within building B is likely to be large, and the second emission amount EM2 of the second greenhouse gas OC is likely to be large. If heat is not easily transferred between the inside and outside of building B through windows Wd and walls, the energy consumption of the air conditioner AC required to maintain a constant temperature within building B is likely to be small, and the second emission amount EM2 of the second greenhouse gas OC is likely to be small. The amount of heat transferred through windows Wd and walls can be calculated based on the respective heat transmittances of the windows Wd and walls and the temperature difference between the inside and outside of building B. The amount of energy consumed by the air conditioner AC required to maintain a certain temperature inside building B is calculated based on the amount of heat transferred between the inside and outside of building B through windows Wd and walls, and the amount of heat emitted inside building B from lighting L, television T, etc.

[0044] In step S3 of this embodiment, the calculation unit 15 uses a program similar to the "Energy Consumption Performance Calculation Program (Residential Version)" published by the Building Research Institute, a national research and development agency, to calculate the amount of energy consumption resulting from the operation of building B based on the component information BI of building B. In this embodiment, the "Energy Consumption Performance Calculation Program (Residential Version)" is a "prescribed simulation program" used to evaluate building B. The prescribed simulation program is, for example, a program prescribed or recommended by the government to calculate the amount of emissions of a second greenhouse gas (OC) used to determine whether the government will grant specific approval to building B. In this embodiment, the calculation unit 15 calculates the second emissions EM2 using a program similar to the "Energy Consumption Performance Calculation Program (Residential Version)," which is a prescribed simulation program used to evaluate building B based on the component information BI. The "Energy Consumption Performance Calculation Program (Residential Version)" is a program prescribed or recommended by Japan to calculate the amount of emissions of a second greenhouse gas (OC) used to determine whether the government will grant LCCM housing approval to building B.

[0045] The program similar to the "energy consumption performance calculation program (residential version)" used by the calculation unit 15 in step S3 may be a program similar to any version of the "energy consumption performance calculation program (residential version)." In step S3, the calculation unit 15 can use, for example, a program similar to the "energy consumption performance calculation program (residential version)" ver. 3.6.0. The calculation unit 15 calculates the energy consumption caused by the operation of building B using, for example, a program similar to the "LIXIL Energy Saving Home Simulation" provided by LIXIL Corporation. The "LIXIL Energy Saving Home Simulation" provided by LIXIL Corporation can calculate the energy consumption caused by the operation of building B using a program similar to the "energy consumption performance calculation program (residential version)."

[0046] The energy consumption calculated by the "energy consumption performance calculation program (residential version)" is the energy consumption in the heating period when heating is performed in building B, and the energy consumption in the cooling period when cooling is performed in building B. The energy consumption in the heating period and the energy consumption in the cooling period are also calculated by a program similar to the "energy consumption performance calculation program (residential version)" used in the evaluation device 10 of this embodiment. The calculation unit 15 uses the above-mentioned program to calculate the energy consumption in the heating period and the energy consumption in the cooling period.

[0047] The calculation unit 15 converts the energy consumption during the heating season calculated as above into greenhouse gas emissions, thereby calculating the second emission amount EM2h of the second greenhouse gas OC associated with the operation of building B during the heating season. The calculation unit 15 converts the energy consumption during the cooling season calculated as above into greenhouse gas emissions, thereby calculating the second emission amount EM2c of the second greenhouse gas OC associated with the operation of building B during the cooling season. The calculation unit 15 converts the sum of the energy consumption during the heating season and the energy consumption during the cooling season calculated as above into greenhouse gas emissions, thereby calculating the second emission amount EM2s of the second greenhouse gas OC associated with the operation of building B over a predetermined period of one year. The second emission amount EM2s over one year is equal to the sum of the second emission amount EM2h and the second emission amount EM2c. In the following description, when no particular distinction is made between the second emission amount EM2h, the second emission amount EM2c, and the second emission amount EM2s, these will be collectively referred to as the second emission amount EM2.

[0048] The calculation unit 15 calculates the second emission amount EM2, for example, by multiplying the energy consumption amount by a carbon dioxide emission coefficient. The carbon dioxide emission coefficient is a value obtained by dividing the amount of carbon dioxide emitted when a certain amount of electricity is consumed by the certain amount of electricity. The carbon dioxide emission coefficient is, for example, 0.457 [kg-CO2 / kWh].

[0049] The component information BI regarding the window Wd used by the calculation unit 15 in step S3 includes the same information as the component information BI regarding the window Wd used when calculating the first greenhouse gas EC in step S2. In this embodiment, the calculation unit 15 calculates the first emission amount EM1 and the second emissions EM2h, EM2c, and EM2s using the common component information BI regarding the window Wd. The component information BI regarding the window Wd used by the calculation unit 15 in step S2 and the component information BI regarding the window Wd used by the calculation unit 15 in step S3 may have at least a portion in common. The calculation unit 15 may not use a portion of the component information BI regarding the window Wd used in one of step S2 and step S3 in the other of step S2 and step S3.

[0050] In step S3, the calculation unit 15 may calculate the second emission amount EM2 of the second greenhouse gas OC associated with the operation of building B using a method other than the above. In step S3, the calculation unit 15 may calculate the amount of heat flowing into and out of building B by using a known program capable of analyzing the thermal environment of building B, and may calculate the amount of energy consumption required to maintain the interior of building B at a certain temperature based on the calculated amount of heat, thereby calculating the second emission amount EM2 of the second greenhouse gas OC associated with the operation of building B. An example of a known program capable of analyzing the thermal environment is AE-Sim / Heat manufactured by Building Environment Solutions Co., Ltd. The amount of heat flowing into and out of building B includes the amount of heat flowing in and out through components that constitute part of building B, such as windows Wd and walls, and the amount of heat generated within building B. The amount of heat flowing in and out through components that constitute part of building B is, for example, the amounts of heat H1 to H7, Hd, Hw1 to Hw3, etc., indicated by white arrows in FIG. 3. The amount of heat generated within building B is, for example, the amount of heat HL emitted from lighting L and the amount of heat HT emitted from television T. In step S3, the calculation unit 15 may calculate the second emission amount EM2 of the second greenhouse gas OC related to the operation of building B using the method described in Japanese Patent Application No. 2023-057623. In step S3, the calculation unit 15 may calculate the second emission amount EM2 of the second greenhouse gas OC related to the operation of building B using information such as the position and direction in which window Wd is installed.

[0051] The second emissions EM2h and EM2c calculated in step S3 above are emissions of the second greenhouse gas OC caused by multiple elements E1. In this embodiment, the multiple elements E1 include the exterior walls Wa of building B, the windows Wd of building B, the floor F of building B, the ceiling Ce of building B, the ventilation Ve performed in building B, and the heat-generating elements Hb located within building B. The second emissions EM2h during the heating season are emissions of the second greenhouse gas OC caused by the five elements E1, namely the exterior walls Wa, the windows Wd, the floor F, the ceiling Ce, and the ventilation Ve. The second emissions EM2c during the cooling season are emissions of the second greenhouse gas OC caused by the six elements E1, namely the exterior walls Wa, the windows Wd, the floor F, the ceiling Ce, the ventilation Ve, and the heat-generating elements Hb. The exterior walls Wa of the building B, the windows Wd of the building B, the floor F of the building B, and the ceiling Ce of the building B are members that make up the building B. The ceiling Ce includes the roof.

[0052] Depending on the temperature difference between the inside and outside of building B, heat moves between the inside and outside of building B through building B's exterior walls Wa, building B's windows Wd, building B's floor F, and building B's ceiling Ce. The amount of heat that moves between the inside and outside of building B through these components is called the transverse heat loss Qf. Solar heat emitted from the sun flows into building B through building B's exterior walls Wa, building B's windows Wd, and building B's ceiling Ce. The amount of solar heat that moves from the outside to the inside of building B through these components is called the solar heat gain Qs. In the following explanation, the temperature inside building B may be referred to as "room temperature." The temperature outside building B may be referred to as "outside temperature."

[0053] During the heating season, energy is consumed to raise the temperature inside building B by heating, and the second greenhouse gas OC is generated in proportion to the energy consumed. During the heating season, heat from inside building B moves to the outside of building B through building B's exterior walls Wa, building B's windows Wd, building B's floor F, and building B's ceiling Ce. During the heating season, solar radiation heat flows into building B through building B's exterior walls Wa, building B's windows Wd, and building B's ceiling Ce. During the heating season, the amount of heat loss Qf that moves through building B's exterior walls Wa, building B's windows Wd, building B's floor F, and building B's ceiling Ce is the amount of heat that increases the emission of the second greenhouse gas OC. During the heating season, the amount of solar heat gain Qs that moves through the exterior wall Wa of building B, the windows Wd of building B, and the ceiling Ce of building B is the amount of heat that reduces the emission of the second greenhouse gas OC.

[0054] During the heating season, emissions of the second greenhouse gas OC attributed to the exterior wall Wa of building B are calculated by converting the heat quantity obtained by subtracting the amount of solar heat gain Qs that moves from the outside of building B to the inside of building B through the exterior wall Wa from the amount of thermal penetration Qf that moves from the inside of building B to the outside of building B through the exterior wall Wa into greenhouse gas emissions. During the heating season, emissions of the second greenhouse gas OC attributed to the window Wd of building B are calculated by converting the heat quantity obtained by subtracting the amount of solar heat gain Qs that moves from the outside of building B to the inside of building B through the window Wd into greenhouse gas emissions from the amount of thermal penetration Qf that moves from the inside of building B to the outside of building B through the window Wd into greenhouse gas emissions. During the heating season, emissions of the second greenhouse gas OC attributed to the ceiling Ce of building B are calculated by converting the heat quantity obtained by subtracting the amount of solar heat gain Qs that moves from the outside of building B to the inside of building B through the ceiling Ce into greenhouse gas emissions. Since solar radiation heat does not flow into building B through floor F, the emissions of the second greenhouse gas OC caused by floor F of building B during the heating season are calculated by converting the amount of heat loss Qf that moves from the inside to the outside of building B through floor F into greenhouse gas emissions.

[0055] During the cooling period, energy is consumed to cool the temperature inside building B by air conditioning, and the second greenhouse gas OC is generated in proportion to the energy consumed. During the cooling period, heat from outside building B moves into building B through building B's exterior walls Wa, building B's windows Wd, building B's floor F, and building B's ceiling Ce. During the cooling period, solar radiation heat flows into building B through building B's exterior walls Wa, building B's windows Wd, and building B's ceiling Ce. During the cooling period, the amount of heat loss Qf that moves through building B's exterior walls Wa, building B's windows Wd, building B's floor F, and building B's ceiling Ce is the amount of heat that increases the amount of heat that increases the emission of the second greenhouse gas OC. During the cooling season, the amount of solar heat gain Qs that moves through the exterior wall Wa of building B, the windows Wd of building B, and the ceiling Ce of building B is the amount of heat that increases the emission of the second greenhouse gas OC.

[0056] The emissions of the second greenhouse gas OC caused by the exterior wall Wa of building B during the cooling season are calculated by converting the sum of the heat loss Qf that moves from the outside to the inside of building B through the exterior wall Wa and the heat gain Qs that moves from the outside to the inside of building B through the exterior wall Wa into greenhouse gas emissions.The emissions of the second greenhouse gas OC caused by the window Wd of building B during the cooling season are calculated by converting the sum of the heat loss Qf that moves from the outside to the inside of building B through the window Wd into greenhouse gas emissions. The emissions of the second greenhouse gas OC caused by the ceiling Ce of Building B during the cooling season are calculated by converting the sum of the amount of heat loss Qf that moves from the outside to the inside of Building B through the ceiling Ce and the amount of solar heat gain Qs that moves from the outside to the inside of Building B through the ceiling Ce into greenhouse gas emissions. Because solar heat does not flow into Building B through Floor F, the emissions of the second greenhouse gas OC caused by Floor F of Building B during the cooling season are calculated by converting the amount of heat loss Qf that moves from the outside to the inside of Building B through Floor F into greenhouse gas emissions.

[0057] In the following explanation, the amount of heat loss Qf during the heating season will be referred to as the "heat loss Qfh," and the amount of heat loss Qf during the cooling season will be referred to as the "heat loss Qfc." The amount of solar heat gain Qs during the heating season will be referred to as the "solar heat gain Qsh," and the amount of solar heat gain Qs during the cooling season will be referred to as the "solar heat gain Qsc."

[0058] When ventilation Ve is performed in building B, at least a portion of the air inside building B is discharged to the outside of building B, and air outside building B flows into building B. During the heating season, when air from outside building B flows into building B, the temperature inside building B drops, and energy is consumed to heat the air by the amount of the temperature drop, generating the second greenhouse gas OC by the amount of energy consumed. During the cooling season, when air from outside building B flows into building B, the temperature inside building B rises, and energy is consumed to cool the air by the amount of the temperature rise, generating the second greenhouse gas OC by the amount of energy consumed. The amount of heat that flows out of building B or into building B due to ventilation Ve is called ventilation heat loss Qv. In the following description, the ventilation heat loss Qv in the heating period will be referred to as "ventilation heat loss Qvh," and the ventilation heat loss Qv in the cooling period will be referred to as "ventilation heat loss Qvc."

[0059] During the cooling season, when air from outside building B flows into building B, the humidity inside building B increases, so energy is consumed to dehumidify the air by cooling the air by the amount of humidity that has increased, and the second greenhouse gas OC is generated in proportion to this energy consumption. The amount of heat required to reduce the increased humidity caused by ventilation Ve during the cooling season is called the amount of cooling energy Qdc.

[0060] The amount of heat generated due to ventilation Ve is called ventilation-induced heat Qc. The ventilation-induced heat Qc during the heating period is called "ventilation-induced heat Qch." Ventilation-induced heat Qch is equal to the ventilation heat loss Qvh. The ventilation-induced heat Qc during the cooling period is called "ventilation-induced heat Qcc." Ventilation-induced heat Qcc is equal to the sum of ventilation heat loss Qvc and cold heat Qdc. Ventilation-induced heat Qcc during the cooling period includes ventilation heat loss Qvc and cold heat Qdc. Ventilation heat losses Qvh and Qvc are heat quantities related to temperature fluctuations due to ventilation Ve in building B. Cold heat Qdc is heat quantities related to humidity fluctuations due to ventilation Ve in building B.

[0061] If a heat-generating element Hb is present within building B, heat will be released from that heat-generating element Hb into building B. Heat-generating elements Hb include equipment such as lighting L and television T, as well as humans. The amount of heat Qe released from heat-generating element Hb into building B during the heating season is the amount of heat that reduces the energy consumption for heating. The amount of heat Qe released from heat-generating element Hb into building B during the cooling season is the amount of heat that increases the energy consumption for cooling. In the following explanation, the amount of heat Qe from heat-generating element Hb during the heating season will be referred to as "heat generation amount Qeh," and the amount of heat Qe from heat-generating element Hb during the cooling season will be referred to as "heat generation amount Qec."

[0062] As shown in Figure 6(a), during the heating season, the amount of heat inflow (Hha) into building B can be considered equal to the amount of heat outflow (Hhb) from building B. The amount of heat inflow (Hha) is the sum of the energy consumption for heating, the amount of solar heat gain (Qsh) from the exterior walls (Wa), windows (Wd), and ceiling (Ce), and the amount of heat generated (Qeh) from the heat-generating elements (Hb) within building B. The amount of heat outflow (Hhb) is the sum of the amount of heat loss (Qfh) through the exterior walls (Wa), windows (Wd), floor (F), and ceiling (Ce) and the amount of heat due to ventilation (Qch) resulting from ventilation (Ve). Figure 6(b) shows the case where the amount of solar heat gain (Qsh) in Figure 6(a) is subtracted from the amount of heat inflow (Hha) and the amount of heat outflow (Hhb). In Figure 6(b), the amount of heat inflow (Hhc) is the amount of heat obtained by subtracting the amount of solar heat gain (Qsh) from the amount of heat inflow (Hha). The heat inflow Hhc is the sum of the energy consumption for heating and the heat generation Qeh of the heat-generating element Hb in building B. In Figure 6(b), the heat outflow Hhd is the heat outflow Hhb minus the solar heat gain Qsh. The heat outflow Hhd is the sum of the heat transfer Qth of the exterior wall Wa, window Wd, floor F, and ceiling Ce, and the heat due to ventilation Qch. The heat transfer Qth of the exterior wall Wa, window Wd, and ceiling Ce is the heat transfer amount obtained by subtracting the solar heat gain Qsh of each component from the heat loss Qfh through each component. Since there is no solar heat transfer for floor F, the heat transfer Qth of floor F is equal to the heat loss Qfh through floor F.

[0063] As shown in Figure 7(a), during the cooling season, for example, the amount of heat outflow Hca flowing out of building B can be considered equal to the amount of heat inflow Hcb flowing into building B. The amount of heat outflow Hca is the energy consumption required for cooling. The amount of heat inflow Hcb is the sum of the permeation heat loss Qfc from the exterior walls Wa, windows Wd, floor F, and ceiling Ce, the solar heat gain Qsc from the exterior walls Wa, windows Wd, and ceiling Ce, the ventilation heat Qcc generated by ventilation Ve, and the heat generation Qec from the heat-generating element Hb within building B. Figure 7(b) shows the state in which the permeation heat loss Qfc and the solar heat gain Qsc from Figure 7(a) are added together for each component to obtain the transferred heat Qtc. During the cooling season, the heat transfer quantity Qtc of each of the exterior wall Wa, window Wd, and ceiling Ce is the sum of the heat loss Qfc through each component and the solar heat gain Qsc through each component. As there is no solar heat transfer for floor F, the heat transfer quantity Qtc of floor F is equal to the heat loss Qfc through floor F.

[0064] As shown in FIG. 4, the calculation unit 15 calculates a breakdown of the second emission amount EM2 calculated in step S3 (step S4). In this embodiment, the calculation unit 15 executes step S4 according to the flowchart shown in FIG. 8. As shown in FIG. 8, in step S4, the calculation unit 15 calculates the calorific value related to the emission amount of the second greenhouse gas OC for each of the multiple elements E1 (step S4a). The calorific value related to the emission amount of the second greenhouse gas OC is the calorific value that increases the energy consumption amount due to heating or cooling. In this embodiment, the calorific value related to the emission amount of the second greenhouse gas OC is the "element value" related to the emission amount of the second greenhouse gas OC. In step S4a, the calculation unit 15 calculates the calorific value as each element value of each element E1 for each of the heating season and the cooling season.

[0065] During the heating season, the calculation unit 15 calculates the heat quantities of the multiple elements E1 included in the heat outflow quantity Hhd shown in Fig. 6(b). In step S4a, the calculation unit 15 calculates the heat transfer quantity Qth for each of the exterior wall Wa, window Wd, floor F, and ceiling Ce, and the ventilation-induced heat quantity Qch due to ventilation Ve, for the heating season. In step S4a, the calculation unit 15 calculates the permeation heat loss Qfh for the exterior wall Wa, window Wd, floor F, and ceiling Ce, and the solar heat gain Qsh for the exterior wall Wa, window Wd, and ceiling Ce, for the heating season, and calculates the heat transfer quantity Qth for each component based on the calculated heat quantities.

[0066] In the cooling season, the calculation unit 15 calculates the heat quantities of the multiple elements E1 included in the inflow heat quantity Hcb shown in Figure 7(b). In step S4a, the calculation unit 15 calculates the heat transfer quantity Qtc for each of the exterior wall Wa, window Wd, floor F, and ceiling Ce, and the ventilation-induced heat quantity Qcc due to ventilation Ve, for the cooling season. In step S4a, the calculation unit 15 calculates the transverse heat loss Qfc for the exterior wall Wa, window Wd, floor F, and ceiling Ce, and the solar heat gain Qsc for the exterior wall Wa, window Wd, and ceiling Ce, for the cooling season, and calculates the heat transfer quantity Qtc for each component based on the calculated heat quantities.

[0067] The amount of heat loss through each component Qf is expressed as Qf = q × ΔT, where q [W / K] is the amount of heat loss from the outer skin per unit temperature difference in each component, and ΔT [K] is the temperature difference between the temperature inside the room that each component constitutes and the temperature outside of building B. The amount of heat loss from the outer skin q per unit temperature difference is the amount of heat that moves through each component when the difference between the temperature inside the room that each component constitutes and the temperature outside of building B is 1°C, or 1K (Kelvin). The amount of heat loss from the outer skin q is calculated by dividing the area of ​​the outer surface of each component by the outer surface TA1 [m 2 ] and the thermal conductivity of each component is U [W / (m 2 ·K), the coefficient of heat transmission is expressed by q=TA1×U. In step S4a, the calculation unit 15 obtains the coefficient of heat transmission of each member from the input member information BI.

[0068] In step S4a, the calculation unit 15 calculates the permeation heat loss Qf for each exterior wall Wa facing north, south, east, and west, each window Wd provided in each exterior wall Wa, the floor F, and the ceiling Ce for each room included in the building B. In this embodiment, the component information BI received by the reception unit 14 includes information on the exterior skin area of ​​the surfaces of the building B facing north, south, east, and west, information on the area of ​​the floor F, and information on the area of ​​the ceiling Ce. The exterior skin area of ​​the exterior surfaces of the building B facing north, south, east, and west is the first exterior skin area SA1. The first exterior skin area SA1 of the exterior surfaces facing each direction is the total area obtained by adding the exterior area of ​​the exterior walls Wa facing each direction and the exterior area of ​​the windows Wd facing each direction. For example, the first exterior skin area SA1 of the exterior surface facing east is the total area obtained by adding the exterior area of ​​the exterior wall Wa facing east and the exterior area of ​​the window Wd facing east.

[0069] In step S4a, the calculation unit 15 estimates the exterior area of ​​the exterior walls Wa facing each direction and the exterior area of ​​the windows Wd facing each direction based on the first exterior area SA1 in each direction. The calculation unit 15 calculates an estimated area EA by multiplying each first exterior area SA1 by the ratio of the area of ​​the exterior surface of the component constituting the reference building facing each direction to the second exterior area SA2 of the exterior surface facing each direction of the reference building. The estimated area EA is an estimate of the area of ​​the exterior surface of the component constituting building B facing a specific direction. The reference building is a building that serves as a reference for specific approvals determined using a predetermined assessment tool. In LCCM housing certification, the reference building is an autonomous, recycling-oriented house. In this embodiment, the memory unit 13 stores information on the second exterior area SA2 of the exterior surface of the reference building facing each direction and information on the area of ​​the exterior surface of the component constituting the reference building facing each direction. Information on the area of ​​the exterior surfaces of the components that make up the reference building, facing each direction, is stored for each room included in the reference building in the storage unit 13. In this embodiment, the components include exterior walls Wa, windows Wd, floors F, and ceilings Ce.

[0070] When the area of ​​the exterior surfaces of the components of the standard building facing each direction is defined as the exterior area TA2, the estimated area EA is expressed as EA = SA1 × (TA2 / SA2). (TA2 / SA2) is the ratio Ra of the exterior area TA2 to the second exterior area SA2. As an example, if the second exterior area SA2 of the exterior surface facing south of the standard building is 33.12 m 2 ], and the external area TA2 of the south-facing exterior wall Wa that constitutes the living room of the reference building is 6.94 [m 2 ], the ratio Ra is 6.94 / 33.12 ≒ 0.21. The calculation unit 15 can calculate the estimated area EA of the exterior area of ​​the exterior wall Wa facing south that constitutes the living room of the target building B by multiplying the first exterior skin area SA1 on the south side by 0.21. If the first exterior skin area SA1 on the south side input as the component information BI is 40 [m 2 ], the estimated area EA is 40 × 0.21 = 8.4 m 2 In step S4a, the calculation unit 15 calculates the estimated area EA of the exterior walls Wa and windows Wd for each of the four directions, east, west, north, and south, for each room included in the building B. In step S4a, the calculation unit 15 calculates the estimated area EA of the ceiling Ce and the floor F for each room, similar to the calculation of the exterior walls Wa and windows Wd, except that they are not divided by direction. In step S4a, the calculation unit 15 substitutes each estimated area EA into the exterior area TA1 described above, and calculates the exterior heat loss q of each component.

[0071] In step S4a, the calculation unit 15 acquires temperature information outside building B from the memory unit 13. The temperature information outside building B includes information on hourly temperatures over a standard year in the area where building B is built. In this embodiment, the temperature information outside building B stored in the memory unit 13 is information acquired from a database provided by the AMeDAS (Automated Meteorological Data Acquisition System) regional meteorological observation system in Japan. The memory unit 13 stores various weather data acquired from, for example, the 1995 edition of the standard year-extended AMeDAS weather data as a database provided by the AMeDAS regional meteorological observation system. The memory unit 13 may also store various weather data acquired from other editions of the standard year-extended AMeDAS weather data. The calculation unit 15 may acquire the temperature information outside building B by accessing a database provided by a government such as AMeDAS via a communication network NW, such as an IP (Internet Protocol) network.

[0072] The memory unit 13 stores, for each region where the above-mentioned temperature information for the outside of building B is stored, information on the temperature setting of the air conditioner AC when the air conditioner AC is used in building B in that region. The temperature setting information for the air conditioner AC is stored for each hour of a standard year for each region for each room included in building B. In step S4a, the calculation unit 15 regards the temperature setting of the air conditioner AC as the room temperature and calculates the temperature difference ΔT [K] between the temperature inside the room constituted by each component and the temperature outside building B. For example, if the temperature setting of the air conditioner AC is 20°C and the temperature outside building B is 11.5°C during a certain hour in a standard year for a certain room, the temperature difference ΔT for the components constituting the certain room is 20°C - 11.5°C = 8.5°C (8.5K). In step S4a, the calculation unit 15 multiplies the exterior heat loss q by the temperature difference ΔT to calculate the through-flow heat loss Qf. The above-mentioned method for calculating the amount of heat loss throughflow Qf is applied to floor F of building B, which uses floor insulation construction methods.

[0073] In the case of floor F of building B to which foundation insulation construction method is applied, the amount of envelope heat loss q is expressed as q = La × Ψ, where La is the foundation perimeter [m] of building B, and Ψ is the linear heat transmittance [W / (m·K)] of floor F. In step S4a, calculation unit 15 obtains the foundation perimeter La and the linear heat transmittance Ψ from the input component information BI. The amount of permeable heat loss Qf for floor F of building B to which foundation insulation construction method is applied is expressed as Qf = q × ΔT × Hz, where Hz is the temperature difference coefficient. The temperature difference coefficient Hz is a coefficient that corrects the amount of heat loss assuming the temperature difference between floor F and the space adjacent to floor F. The temperature difference coefficient Hz is, for example, 0.7.

[0074] In step S4a, the calculation unit 15 calculates the breakthrough heat loss Qf for each component for each hour during which the air conditioner AC is operating based on the data for one year stored in the memory unit 13. In step S4a, the calculation unit 15 calculates the total breakthrough heat loss Qfh for each component during the heating period of the set year by adding up the breakthrough heat loss Qfh for each hour during the heating period of the set year. In step S4a, the calculation unit 15 calculates the total breakthrough heat loss Qfc for each component during the cooling period of the set year by adding up the breakthrough heat loss Qfc for each hour during the cooling period of the set year. In this embodiment, one year corresponds to a "predetermined period." In this embodiment, one hour corresponds to a "target period." The predetermined period of one year includes multiple one-hour target periods. The "predetermined period" is not limited to one year and is not particularly limited. The "target period" is not limited to one hour and is not particularly limited.

[0075] In step S4a, the calculation unit 15 calculates the solar altitude α [°] for each hour of the standard one-year data described above. The solar altitude α is expressed by the following formula (1).

[0076]

number

[0077]

number

[0078] In step S4a, the calculation unit 15 calculates the global solar radiation J for each hour of the standard one-year data. H Calculate the global solar radiation J at a certain time. H is expressed by the following equation (3).

[0079]

number

[0080] Solar heat gain per unit solar radiation intensity of window Wd during the heating season Mhw [W / (W / m2 )] is expressed as Mhw = Aw × η × fh × νh. The solar heat gain per unit solar radiation intensity of the window Wd during the cooling season is Mcw [W / (W / m 2 )] is expressed by Mcw = Aw × η × fc × νc. Aw is the area of ​​the window Wd [m 2 ]. The external area Aw of the window Wd is the estimated area EA for the window Wd described above. η is the solar heat gain coefficient. The solar heat gain coefficient η is a value input as the component information BI for the window Wd. fh is the solar heat gain correction coefficient for the window Wd during the heating season. fc is the solar heat gain correction coefficient for the window Wd during the cooling season. The solar heat gain correction coefficients fh and fc are calculated by the calculation unit 15 based on the component information BI. In this embodiment, the solar heat gain correction coefficients fh and fc are calculated using a program similar to the "LIXIL Energy Saving Home Simulation." vh is the orientation coefficient for the heating season. vc is the orientation coefficient for the cooling season. The orientation coefficients vh and vc are stored in the memory unit 13. The orientation coefficients vh and vc are values ​​determined by energy conservation standards stipulated by the government.

[0081] The amount of solar heat gain Qsh through the window Wd during the heating season is Qsh = Mhw × J H In step S4a, the calculation unit 15 calculates the amount of solar radiation heat gain Qsh for each window Wd facing each direction in each room for each hour during the heating season in the predetermined period of one year. In step S4a, the calculation unit 15 calculates the amount of solar radiation heat gain Qsh for each window Wd in the heating season by adding up the amounts of solar radiation heat gain Qsh calculated for each hour. The amount of solar radiation heat gain Qsc for a window Wd in the cooling season is calculated as follows: Qsc = Mcw × J H In step S4a, the calculation unit 15 calculates the amount of solar heat gain Qsc for each window Wd facing each direction in each room for each hour during the cooling season in one year. In step S4a, the calculation unit 15 calculates the amount of solar heat gain Qsc for each window Wd during the cooling season by adding up the amounts of solar heat gain Qsc calculated for each hour.

[0082] Solar heat gain per unit solar radiation intensity of components other than windows Wd during the heating season Mha [W / (W / m 2 )] is expressed as Mha = Aa × η × νh. The solar heat gain per unit solar radiation intensity of components other than windows Wd during the cooling season is Mca [W / (W / m 2 )] is expressed as Mca = Aa × η × νc. Aa is the external area [m 2 As the outer area Aa, the above-mentioned estimated area EA of the members other than the window Wd is used.

[0083] The amount of solar heat gained by components other than the window Wd during the heating season, Qsh, is Qsh = Mha × J H In step S4a, the calculation unit 15 calculates the amount of solar heat gain Qsh for each hour during the heating season in one year for each exterior wall Wa facing each direction in each room and for each ceiling Ce in each room. The calculation unit 15 calculates the amount of solar heat gain Qsh for each component other than the window Wd during the heating season in one year by adding up the amount of solar heat gain Qsh calculated for each hour. The amount of solar heat gain Qsc for each component other than the window Wd during the cooling season is calculated as Qsc = Mca × J H In step S4a, the calculation unit 15 calculates the amount of solar heat gain Qsc per hour during the cooling season in a year for each exterior wall Wa facing each direction in each room and for each ceiling Ce in each room. The calculation unit 15 adds up the amount of solar heat gain Qsc calculated for each hour to calculate the amount of solar heat gain Qsh for each component other than the window Wd during the cooling season in a year.

[0084] In this embodiment, the calculation unit 15 calculates the amount of thermal breakthrough heat loss Qf and the amount of solar heat gain Qs that travel through the components that make up the building B based on the estimated area EA, as described above. In this embodiment, the information obtained from the database provided by the AMeDAS regional weather observation system and used to calculate the amount of thermal breakthrough heat loss Qf and the amount of solar heat gain Qs is information on weather conditions used in a specified simulation program, i.e., the "Energy Consumption Performance Calculation Program (Residential Edition)." The calculation unit 15 calculates the amount of thermal breakthrough heat loss Qf and the amount of solar heat gain Qs based on the information on weather conditions.

[0085] In step S4a, the calculation unit 15 calculates each quantity of heat transferred Qth during the heating season for each of the exterior wall Wa, window Wd, floor F, and ceiling Ce by subtracting the solar heat gain Qsh from the solar heat loss Qfh during the heating season. Because there is no solar heat gain Qsh for floor F, the calculation unit 15 acquires the solar heat loss Qfh of floor F during the heating season as the quantity of heat transferred Qth for floor F. In step S4a, the calculation unit 15 calculates each quantity of heat transferred Qtc during the cooling season for each of the exterior wall Wa, window Wd, floor F, and ceiling Ce by adding the solar heat loss Qfc and the solar heat gain Qsc during the cooling season. Because there is no solar heat gain Qsc for floor F, the calculation unit 15 acquires the solar heat loss Qfc of floor F during the cooling season as the quantity of heat transferred Qtc for floor F.

[0086] In step S4a, the calculation unit 15 calculates the air volume Vr of each room. The air volume Vr is expressed as Vr = Af × Hc, where Af is the floor area [m 2 ]. Hc is the ceiling height of each room [m]. The floor area of ​​each room Af [m 2 ] is the estimated area EA calculated as described above. The floor area Af [m 2 ] may be a value input as the component information BI. The ceiling height Hc of each room is a value input as the component information BI.

[0087] In step S4a, the calculation unit 15 calculates the ventilation volume Va [m 3 / h] is calculated. When heat exchange ventilation is not used, the ventilation volume Va is expressed as Va = n1 × Vr. n1 is the ventilation rate required per hour [times / h]. The ventilation rate n1 is, for example, 0.5 [times / h]. Heat exchange ventilation is a ventilation method that exchanges heat between the air taken into building B by ventilation Ve and the air exhausted outside building B. When heat exchange ventilation is used, the ventilation volume Va is expressed as Va = n2 × Vr. n2 is the apparent ventilation rate [times / h]. The apparent ventilation rate n2 is expressed as n2 = n1 - ea × ma. ea is the temperature exchange efficiency. ma is the effective ventilation efficiency. The temperature exchange efficiency ea and the effective ventilation efficiency ma are values ​​entered as component information BI. Whether or not heat exchange ventilation is used is information entered as component information BI.

[0088] In step S4a, the calculation unit 15 calculates the heat capacity Cv [kW / K] per unit temperature of the ventilated air using the ventilation volume Va. The heat capacity Cv is expressed as Cv = Va × Cav / 3600. Cav is the volumetric specific heat of air [kJ / m 3 K]. The volumetric specific heat of air, Cav, is expressed as Cav = ρ × Cp / 1000, where ρ is the density of air [kg / m 3 ]. Cp is the specific heat of air at constant pressure [J / kgK]. The density of air ρ is, for example, 1.166 [kg / m 3 The specific heat of air, Cp, is, for example, 1006 [J / kgK].

[0089] In step S4a, the calculation unit 15 calculates the ventilation heat loss Qv for each of the heating season and the cooling season using the heat capacity Cv and the temperature difference ΔT. The ventilation heat loss Qv is expressed as Qv = Cv × ΔT. In step S4a, the calculation unit 15 calculates, for each room, the hourly ventilation heat loss Qvh for the time that the air conditioner AC is operating during the heating season of the year. The calculation unit 15 calculates the ventilation heat loss Qvh for each room during the heating season of the year by adding up the ventilation heat losses Qvh calculated for each hour for each room. The calculated ventilation heat loss Qvh for the heating season of the year is the ventilation-induced heat quantity Qch for the heating season of the year. In step S4a, the calculation unit 15 calculates, for each room, the ventilation heat loss Qvc for each hour for the time that the air conditioner AC is operating during the cooling season of the year. The calculation unit 15 calculates the ventilation heat loss Qvc for the cooling season for one year for each room by adding up the ventilation heat loss Qvc calculated for each hour for each room.

[0090] In step S4a, the calculation unit 15 calculates the amount of cold energy Qdc in the cooling period. The amount of cold energy Qdc is calculated as follows: Qdc=(AH ext -AH int )×Ha×ρ×Va. AH ext is the absolute humidity of the outside air [g / kg]. ext The information is obtained from the database provided by the AMeDAS regional meteorological observation system in Japan. AH int is the absolute humidity in the room [g / kg]. int is the humidity value set for the set temperature of the air conditioner AC. Ha is the latent heat of water [J / g]. The latent heat of water Ha is, for example, 2250 [J / g]. Va is the ventilation volume Va mentioned above.

[0091] In step S4a, calculation unit 15 calculates, for each room, the amount of cold energy Qdc per hour during the cooling season of the year when air conditioner AC is operating. Calculation unit 15 calculates the amount of cold energy Qdc per hour for each room by adding up the amount of cold energy Qdc calculated for each hour. Calculation unit 15 calculates the amount of ventilation heat loss Qvc for the cooling season of the year and the amount of cold energy Qdc for the cooling season of the year for each room by adding up the amount of ventilation heat loss Qvc for the cooling season of the year and the amount of cold energy Qdc for the cooling season of the year for each room.

[0092] In step S4a, the calculation unit 15 calculates the heat generation amount Qe of the heat-generating element Hb. In step S4a, the calculation unit 15 calculates the heat generation amount of the human body based on a schedule of people occupying each room set in accordance with the criteria established by the government. The schedule of people occupying each room set in accordance with the criteria established by the government is, for example, the occupancy schedule set in the "Criteria for Judgment of Housing Project Builders" prescribed by the Ministry of Land, Infrastructure, Transport and Tourism of Japan. The occupancy schedule of the person is stored in the memory unit 13. The heat generation amount of the human body is, for example, 100 [W / person]. In step S4a, the calculation unit 15 calculates the heat generation amount of the equipment based on the operation schedule of the lighting equipment and the operation schedule of the heat-generating equipment set in accordance with the criteria established by the government.

[0093] In step S4a, the calculation unit 15 calculates, for each room, the heat generation amount of the human body and the heat generation amount of the equipment for each hour that the air conditioner AC is operating during the heating season of the year. The calculation unit 15 calculates the heat generation amount Qeh of the heat-generating element Hb for the heating season of the year by adding together these heat generation amounts calculated for each hour. In step S4a, the calculation unit 15 calculates, for each room, the heat generation amount of the human body and the heat generation amount of the equipment for each hour that the air conditioner AC is operating during the cooling season of the year. The calculation unit 15 calculates the heat generation amount Qec of the heat-generating element Hb for the cooling season of the year by adding together these heat generation amounts calculated for each hour.

[0094] In step S4a, the calculation unit 15 determines, for each hour during the heating season of the year, whether a first sum Sm1 of the solar heat gains Qsh for each component and the heat generation amounts Qec of the heat-generating elements Hb is greater than a second sum Sm2 of the transient heat losses Qfh and ventilation heat losses Qvh for each component. If the first sum Sm1 is less than or equal to the second sum Sm2, the calculation unit 15 leaves the solar heat gains Qsh and the heat generation amounts Qeh of the heat-generating elements Hb unchanged.

[0095] In step S4a, if the first total value Sm1 is greater than the second total value Sm2, the calculation unit 15 corrects the first total value Sm1 to the same value as the second total value Sm2. The corrected first total value Sm1 is referred to as the first total value Sm1a. The calculation unit 15 allocates the corrected first total value Sm1a to each solar heat gain Qsh and the heat generation amount Qeh of the heat generation element Hb according to the ratio between each solar heat gain Qsh and the heat generation amount Qeh of the heat generation element Hb in the first total value Sm1 before correction. The calculation unit 15 corrects the solar heat gain Qsh and the heat loss Qeh of the heat-generating element Hb so that the ratio of each solar heat gain Qsh to the corrected first total value Sm1a is the same as the ratio of each solar heat gain Qsh to the heat loss Qeh of the heat-generating element Hb to the first total value Sm1 before correction.

[0096] 9 shows an example of a certain hour during the heating season in which the first sum Sm1 of the solar heat gain Qsh of each component and the heat generation Qec of the heat-generating element Hb is greater than the second sum Sm2 of the transient heat loss Qfh and ventilation heat loss Qvh of each component. The first sum Sm1 is equal to the inflow heat amount Hha. The second sum Sm2 is equal to the outflow heat amount Hhb. As shown in FIG. 9, when the inflow heat amount Hha is greater than the outflow heat amount Hhb, the calculation unit 15 corrects the inflow heat amount Hha to the inflow heat amount Hha1, which is equal to the outflow heat amount Hhb. The calculation unit 15 corrects each solar heat gain Qsh and the heat generation amount Qeh of the heat generation element Hb so that the ratio between each solar heat gain Qsh and the heat generation amount Qeh of the heat generation element Hb in the inflow heat amount Hha1 is the same as the ratio between each solar heat gain Qsh and the heat generation amount Qeh of the heat generation element Hb in the inflow heat amount Hha.

[0097] In step S4a, the calculation unit 15 determines whether the temperature outside building B is lower than the temperature inside each room, i.e., the set temperature of the air conditioner AC, for each hour during the cooling season of the year. If the temperature outside building B is equal to or higher than the temperature inside each room, the calculation unit 15 sets each of the heat quantities calculated for each hour during the cooling season as the same value.

[0098] When the temperature outside building B is lower than the temperature inside each room, heat inside building B is released to the outside of building B through each component that makes up building B. This released heat amount is called the heat release amount Qr. As shown in (a) of FIG. 10, during one hour of the cooling season when the temperature outside building B is lower than the temperature inside each room, the outflow heat amount Hca is the sum of the energy consumption for cooling and the heat release amount Qr. When the temperature outside building B is lower than the temperature inside each room, the calculation unit 15 calculates the heat release amount Qr that is released from the inside of building B to the outside of building B within a range equal to or less than the heat release amount Qec of the heat-generating element Hb. In this embodiment, the heat release amount Qr is equal to the heat release amount Qec of the heat-generating element Hb. The calculation unit 15 allocates the heat release amount Qr to the heat amounts attributable to the exterior walls Wa, windows Wd, floor F, ceiling Ce, and ventilation Ve. The calculation unit 15 calculates the amount of heat attributable to each component and ventilation in the heat release amount Qr according to the ratio between the respective breakthrough heat losses Qfc and ventilation heat loss Qvc for each component. The calculation unit 15 calculates the amount of heat attributable to each component and ventilation Ve in the heat release amount Qr so that the ratio between the amounts of heat attributable to each component and ventilation Ve in the heat release amount Qr is the same as the ratio between the respective breakthrough heat losses Qfc and ventilation heat loss Qvc for each component.

[0099] When the temperature outside the building B is lower than the temperature inside each room, the calculation unit 15 calculates the quantity of transferred heat Qtc and the quantity of ventilation-induced heat Qcc based on the quantity of heat release Qr. Calculates each element value of each element E1. The calculation unit 15 calculates the quantity of transferred heat Qtc due to the exterior wall Wa by subtracting the quantity of heat release Qr due to the exterior wall Wa from the sum of the quantity of thermal penetration Qfc and the quantity of solar radiation heat gain Qsc due to the exterior wall Wa. When the quantity of heat release Qr occurs, the calculation unit 15 calculates the quantity of transferred heat Qtc for the window Wd and the ceiling Ce in the same manner as for the exterior wall Wa. When the quantity of heat release Qr occurs, the calculation unit 15 calculates the quantity of transferred heat Qtc due to the floor F by subtracting the quantity of heat release Qr due to the floor F from the quantity of thermal penetration Qfc due to the floor F. The calculation unit 15 again acquires the value obtained by subtracting the heat quantity attributable to ventilation Ve of the heat release amount Qr from the calculated ventilation-induced heat quantity Qcc as the ventilation-induced heat quantity Qcc. Before calculating the ventilation-induced heat quantity Qcc, the calculation unit 15 may determine whether the temperature outside the building B is lower than the temperature inside each room. In this case, the calculation unit 15 may calculate the ventilation-induced heat quantity Qcc by subtracting the heat quantity attributable to ventilation Ve of the heat release amount Qr from the total value of the ventilation heat loss Qvc and the cold heat quantity Qdc.

[0100] In step S4a, the calculation unit 15 calculates the amounts of heat transferred Qth and Qtc for the exterior wall Wa, window Wd, floor F, and ceiling Ce, the amounts of heat transferred Qch and Qcc due to ventilation, and the amounts of heat generated Qeh and Qec for the heat-generating element Hb, as described above. In the heating period, the amount of heat transferred Qth and the amount of heat generated Qch due to ventilation are element values ​​related to the amount of emission of the second greenhouse gas OC for each element E1 during the heating period. In the cooling period, the amount of heat transferred Qtc, the amount of heat generated Qcc due to ventilation, and the amount of heat generated Qec are element values ​​related to the amount of emission of the second greenhouse gas OC for each element E1 during the cooling period. In step S4a, the calculation unit 15 calculates the amount of heat loss Qf, the amount of solar heat gain Qs, the amount of ventilation-induced heat Qc due to ventilation Ve performed in the building B, and the amount of heat generated Qe for the heat-generating element Hb for each target period (hour) of the predetermined period (one year). The calculation unit 15 calculates each element value of each element E1 for a specified period (one year) based on the calculated amount of heat loss Qf, amount of solar heat gained Qs, amount of heat due to ventilation Qc, and amount of heat generated Qe by the heat-generating element Hb for multiple target periods (one hour).

[0101] In step S4a, the calculation unit 15 performs the above-described processes, for example, in accordance with the flowchart shown in FIG. 11. As shown in FIG. 11, when step S4a starts, the calculation unit 15 calculates each heat quantity for a target period within a set predetermined period (step S41). In this embodiment, the predetermined period is one year, and the target period is each one hour included in the one year. Data for each of the multiple target periods within the predetermined period is stored in the storage unit 13. The calculation unit 15 may acquire data for each of the multiple target periods within the predetermined period from outside the evaluation device 10 via the communication network NW.

[0102] In step S41, if the target period is a period included in the heating period, the calculation unit 15 calculates the solar heat gain Qsh and the transverse heat loss Qfh for each component, the ventilation-induced heat Qch, and the heat generation amount Qeh of the heat-generating element Hb for the target period for each room included in building B as described above. In step S41, if the target period is a period included in the cooling period, the calculation unit 15 calculates the solar heat gain Qsc and the transverse heat loss Qfc for each component, the ventilation-induced heat Qcc, and the heat generation amount Qec of the heat-generating element Hb for the target period for each room included in building B as described above. In step S41, if the target period is a period included in the heating period, the calculation unit 15 also calculates the transferred heat Qth. In step S41, if the target period is a period included in the cooling period, the calculation unit 15 also calculates the transferred heat Qtc.

[0103] After calculating each heat quantity for the target period, the calculation unit 15 determines whether the target period is included in the heating period (step S42). If the calculation unit 15 determines in step S42 that the target period is included in the heating period (step S42: YES), the calculation unit 15 determines whether a first sum Sm1 of the solar heat gain Qsh and the heat generation amount Qeh of the heat-generating element Hb is greater than a second sum Sm2 of the transient heat loss Qfh and the ventilation heat loss Qvh (step S43). The determination in step S43 is performed for each room included in the building B. If the calculation unit 15 determines in step S43 that the first sum Sm1 is greater than the second sum Sm2 (step S43: YES), the calculation unit 15 corrects the solar heat gain Qsh and the heat generation amount Qeh of the heat-generating element Hb (step S44).

[0104] In step S44, the calculation unit 15 corrects the first sum Sm1 of the solar heat gain Qsh and the heat generation amount Qeh of the heat-generating element Hb to a first sum Sm1a that is equal to the second sum Sm2 of the transient heat loss Qfh and the ventilation heat loss Qvh, as described with reference to Fig. 9. In step S44, the calculation unit 15 corrects each solar heat gain Qsh and each heat generation amount Qeh of the heat-generating element Hb in accordance with the ratio between each solar heat gain Qsh and each heat generation amount Qeh of the heat-generating element Hb in the first sum Sm1 before correction, as described above.

[0105] 11, after step S44, the calculation unit 15 determines whether the target period for which each heat quantity was calculated is the last target period (step S47). If the target period is not the last target period (step S47: NO), the calculation unit 15 changes the target period to the next target period (step S48) and executes step S41 again. If the target period is the last target period (step S47: YES), the calculation unit 15 executes step S49, which will be described later. If the calculation unit 15 determines in step S43 that the first total value Sm1 is equal to or less than the second total value Sm2 (step S43: NO), the calculation unit 15 executes step S47 without executing step S44.

[0106] If the calculation unit 15 determines in step S42 that the target period is included in the cooling period (step S42: NO), it determines whether the outside air temperature is lower than the indoor temperature (step S45). The determination in step S45 is performed for each room included in building B. If the calculation unit 15 determines in step S45 that the outside air temperature is lower than the indoor temperature (step S45: YES), it corrects the amount of heat transferred Qtc and the amount of ventilation heat loss Qvc (step S46).

[0107] In step S46, the calculation unit 15 calculates the amount of heat release Qr released from the inside of the building B to the outside of the building B within a range equal to or less than the heat release Qec of the heat-generating element Hb, as described with reference to FIG. 10. In step S46 of this embodiment, the calculation unit 15 sets the value of the heat release Qr to the same value as the heat release Qec. In step S46, the calculation unit 15 corrects the amount of transferred heat Qtc, which is the sum of the penetration heat loss Qfc and the solar radiation heat gain Qsc, and the ventilation heat loss Qvc, based on the heat release Qr. In step S46, the calculation unit 15 divides the heat release Qr into heat amounts associated with the exterior wall Wa, window Wd, floor F, ceiling Ce, and ventilation, according to the ratio between each penetration heat loss Qfc and ventilation heat loss Qvc. The calculation unit 15 corrects the quantity of heat transferred Qtc and the quantity of ventilation heat loss Qvc by subtracting each divided amount of heat from the quantity of heat transferred Qtc and the quantity of ventilation heat loss Qvc for each member, respectively.

[0108] After step S46, the calculation unit 15 executes step S47. If the calculation unit 15 determines in step S45 that the outside air temperature is equal to or higher than the indoor temperature (step S45: NO), the calculation unit 15 executes step S47 without executing step S46. If the calculation unit 15 determines in step S47 that the target period is the last target period (step S47: YES), the calculation unit 15 executes step S49.

[0109] Step S49 is a step of calculating each heat quantity for each element E1 based on each calculated heat quantity. In step S49, the calculation unit 15 adds up each heat quantity for each room calculated for the heating period and the cooling period to calculate each heat quantity as an element value for multiple elements E1. In step S49, the calculation unit 15 calculates the amount of heat transferred Qth during the heating period of a predetermined period of one year and the amount of heat transferred Qtc during the cooling period of a predetermined period of one year for each of the exterior wall Wa, window Wd, floor F, and ceiling Ce. In step S49, the calculation unit 15 calculates the ventilation-induced heat quantity Qch during the heating period of a predetermined period of one year and the ventilation-induced heat quantity Qcc during the cooling period of a predetermined period of one year. In step S49, the calculation unit 15 calculates the heat generation amount Qec of the heat-generating element Hb during the cooling period of a predetermined period of one year.

[0110] As shown in Fig. 8, after calculating the heat quantity of each element E1, the calculation unit 15 calculates the ratio of each heat quantity for each element E1 (step S4b). In step S4b, the calculation unit 15 adds together each amount of transferred heat Qth during the heating period and the amount of ventilation-induced heat Qch during the heating period to calculate the amount of outflow heat Hhd flowing out of building B during the heating period. In step S4b, the calculation unit 15 calculates the ratio of each amount of transferred heat Qth to the amount of outflow heat Hhd and the ratio of ventilation-induced heat Qch to the amount of outflow heat Hhd. In step S4b, the calculation unit 15 adds together each amount of transferred heat Qtc during the cooling period, the amount of ventilation-induced heat Qcc during the cooling period, and the amount of heat generated Qec of the heat-generating element Hb to calculate the amount of inflow heat Hcb flowing into building B during the cooling period. In step S4b, the calculation unit 15 calculates the ratio of each transferred heat quantity Qtc to the inflow heat quantity Hcb, the ratio of the ventilation-induced heat quantity Qcc to the inflow heat quantity Hcb, and the ratio of the heat generation quantity Qec of the heat-generating element Hb to the inflow heat quantity Hcb. The calculation unit 15 does not have to calculate the ratio of the heat generation quantity Qec of the heat-generating element Hb to the inflow heat quantity Hcb.

[0111] After calculating the proportion of each heat quantity associated with each element E1, the calculation unit 15 multiplies the second emissions EM2h and EM2c by each calculated proportion to calculate the amount of emission of the second greenhouse gas OC attributed to each element E1 (step S4c). The calculation unit 15 multiplies the second emission amount EM2h of the second greenhouse gas OC associated with the operation of building B in the heating season by the proportion of each transfer heat quantity Qth during the heating season and the proportion of the ventilation heat loss Qvh during the heating season to calculate the amount of emission of the second greenhouse gas OC attributed to each element E1 in the heating season. The calculation unit 15 multiplies the second emission amount EM2c of the second greenhouse gas OC associated with the operation of building B in the cooling season by the proportion of each transfer heat quantity Qtc during the cooling season, the proportion of the ventilation heat loss Qvc during the cooling season, and the proportion of the heat generation quantity Qec of the heat-generating element Hb during the cooling season to calculate the amount of emission of the second greenhouse gas OC attributed to each element E1 in the cooling season. The calculation unit 15 adds up the emission amount of the second greenhouse gas OC during the heating season and the emission amount of the second greenhouse gas OC during the cooling season for each of the exterior wall Wa, window Wd, floor F, and ceiling Ce, and calculates the total emission amount of the second greenhouse gas OC caused by each component for a specified period of one year.

[0112] As an example, if the second greenhouse gas OC emissions during the heating season (EM2h) are 30 t-CO2eq / household and the ratio of the heat transfer amount Qth through window Wd to the heat outflow amount Hhd during the heating season is 34%, the second greenhouse gas OC emissions due to window Wd during the heating season are 30 × 0.34 = 10.2 t-CO2eq / household. If the second greenhouse gas OC emissions during the cooling season (EM2c) are 40 t-CO2eq / household and the ratio of the heat transfer amount Qtc through window Wd to the heat inflow amount Hcb during the cooling season is 28%, the second greenhouse gas OC emissions due to window Wd during the cooling season are 40 × 0.28 = 11.2 t-CO2eq / household. In these examples, the second greenhouse gas OC emissions due to window Wd over a given period of one year are 10.2 + 11.2 = 21.4 t-CO2eq / household.

[0113] As shown in FIG. 4, the calculation unit 15 calculates an environmental load assessment value EL based on the calculated first emission amount EM1 and second emission amount EM2s (step S5). In step S5, the calculation unit 15 adds the first emission amount EM1 and the second emission amount EM2s to calculate the total amount of greenhouse gases emitted over the entire life cycle of building B as the environmental load assessment value EL. In step S5, the calculation unit 15 calculates, as the environmental load assessment value EL, a ratio indicating how much the total amount of greenhouse gases emitted over the entire life cycle of the target building B has been reduced relative to the total amount of greenhouse gases emitted over the entire life cycle of another building B that serves as a reference. In step S5, the calculation unit 15 calculates, as the environmental load assessment value EL, a ratio indicating how much the total amount of first greenhouse gas EC emitted over the entire life cycle of the target building B has been reduced relative to the total amount of first greenhouse gas EC emitted over the entire life cycle of the other building B that serves as a reference. In step S5, the calculation unit 15 calculates, as an environmental load assessment value EL, a ratio indicating the extent to which the total emission of the second greenhouse gas OC emitted over the entire life cycle of the target building B has been reduced relative to the total emission of the second greenhouse gas OC emitted over the entire life cycle of another reference building B. In step S5, the calculation unit 15 calculates that the total emission of the greenhouse gas emitted over the entire life cycle of building B is equivalent to the number of trees that absorb carbon dioxide in one year, and calculates the number of trees as the environmental load assessment value EL.

[0114] In step S5, the calculation unit 15 calculates the amount of emission of the second greenhouse gas OC attributable to each element E1 calculated in step S4 as an environmental load assessment value EL that represents the environmental load related to the life cycle of the building B. In step S5, the calculation unit 15 calculates the total amount of emission of the first greenhouse gas EC attributable to the exterior wall Wa and the amount of emission of the second greenhouse gas OC attributable to the exterior wall Wa as the environmental load assessment value EL. In step S5, the calculation unit 15 calculates the total amount of emission of the first greenhouse gas EC attributable to the window Wd and the amount of emission of the second greenhouse gas OC attributable to the window Wd as the environmental load assessment value EL. In step S5, the calculation unit 15 calculates the total amount of emission of the first greenhouse gas EC attributable to the floor F and the amount of emission of the second greenhouse gas OC attributable to the floor F as the environmental load assessment value EL. In step S5, the calculation unit 15 calculates the total of the emission amount of the first greenhouse gas EC attributable to the ceiling Ce and the emission amount of the second greenhouse gas OC attributable to the ceiling Ce as the environmental load assessment value EL. The emission amount of the first greenhouse gas EC attributable to the window Wd is the fifth emission amount EM5 described above. The emission amount of the first greenhouse gas EC attributable to each of the exterior wall Wa, the floor F, and the ceiling Ce is calculated in the same manner as the fourth emission amount EM4 described above. The emission amount of the first greenhouse gas EC attributable to each of the exterior wall Wa, the floor F, and the ceiling Ce may be calculated in the same manner as the fifth emission amount EM5 for the window Wd described above.

[0115] The output unit 16 outputs various data related to the evaluation program of this embodiment. The data output from the output unit 16 is transmitted to the user terminal 20 via the first communication unit 11 and the second communication unit 21 and displayed on the display unit 24 of the user terminal 20. When the evaluation program is launched, the output unit 16 outputs an input screen 25 for inputting component information BI of building B to the display unit 24. FIG. 12 shows an example of the input screen 25 displayed on the display unit 24. The input screen 25 has input fields for inputting component information BI of each component constituting building B, including windows Wd. The input fields for inputting component information BI are not particularly limited as long as they allow input of the component information BI necessary for calculating the above-described environmental impact assessment value EL. The recycled material usage rate may be input directly as a numerical value or may be selected from a drop-down list. The recycled material usage rate may be input as the recycled material usage rate for each component, or as the recycled material usage rate for the entire building B.

[0116] The user operates the input unit 23 to input the necessary component information BI into each input field. An evaluation start button 26 is provided on the input screen 25. The user can cause the evaluation device 10 to start evaluating the target building B by operating the input unit 23 and pressing the evaluation start button 26. When the evaluation start button 26 is pressed, the calculation unit 15 starts the above-mentioned calculation and calculates the environmental load evaluation value EL.

[0117] The output unit 16 outputs the environmental load assessment value EL calculated by the calculation unit 15. In this embodiment, the output unit 16 outputs not only the environmental load assessment value EL but also the first emission amount EM1 and the second emission amount EM2s. The output unit 16 outputs a first output screen 27 displaying the environmental load assessment value EL, the first emission amount EM1, and the second emission amount EM2s to the display unit 24 via the first communication unit 11 and the second communication unit 21. FIG. 13 shows an example of the first output screen 27 displayed on the display unit 24. As shown in FIG. 13, the first output screen 27 displays the life cycle CO2 emissions, a breakdown of the life cycle CO2 emissions, and the greenhouse gas reduction effect of the proposed home for each of the comparison home and the proposed home. The life cycle CO2 emissions are the total amount of greenhouse gases emitted throughout the entire life cycle of building B. The breakdown of life cycle CO2 emissions includes emissions of embodied carbon, i.e., the first greenhouse gas EC, and operational carbon, i.e., the second greenhouse gas OC.

[0118] In the example of Figure 13, the first emission amount EM1 of the first greenhouse gas EC is displayed separately as the first emission amount EM1a of the first greenhouse gas EC during "construction" and the first emission amount EM1b of the first greenhouse gas EC during "repair, renewal, and demolition." The first emission amount EM1a of the first greenhouse gas EC during "construction" is the total emission amount of the first greenhouse gas EC emitted from the procurement of materials for Building B until the completion of construction of Building B. The first emission amount EM1b of the first greenhouse gas EC during "repair, renewal, and demolition" is the total emission amount of the first greenhouse gas EC emitted from after Building B is constructed until the completion of demolition of Building B. In the example of Figure 13, the second emission amount EM2s of the second greenhouse gas OC is shown as operational carbon during "occupancy."

[0119] The comparison home shown on the first output screen 27 in FIG. 13 is another building B that serves as a reference. In this embodiment, the comparison home is a reference building, for example, an autonomous recycling-oriented home. The various data related to the comparison home displayed on the first output screen 27 may be data that has been stored in advance in the storage unit 13, or may be data that has been calculated by the calculation unit 15 based on the component information BI for the comparison home that has been input by the user on the input screen 25. The proposed home is the building B to be evaluated, and is the building B for which the user has input the component information BI on the input screen 25. The first output screen 27 may display the environmental load assessment values ​​EL for a plurality of comparison homes, or may display the environmental load assessment values ​​EL for a plurality of proposed homes.

[0120] In the example of Figure 13, the first output screen 27 displays the environmental load assessment value EL, including the life cycle CO2 emissions of the proposed home, the reduction effect of the life cycle CO2 emissions of the proposed home compared to the comparison home, the reduction effect of the embodied carbon of the proposed home compared to the comparison home, the reduction effect of the operational carbon of the proposed home compared to the comparison home, and the reduction effect indicating how many cedar trees absorb the carbon dioxide (CO2) of the life cycle CO2 emissions in one year.

[0121] The output unit 16 outputs a second output screen 28, which displays the life cycle CO2 emissions of each component constituting the building B and a breakdown of the life cycle CO2 emissions, to the display unit 24 via the first communication unit 11 and the second communication unit 21. FIG. 14 shows an example of the second output screen 28 displayed on the display unit 24. In the example of FIG. 14, the second output screen 28 displays the total amount of emissions of the first greenhouse gas EC and the second greenhouse gas OC attributable to each component, i.e., the exterior wall Wa, the window Wd, the floor F, and the ceiling Ce, as well as a breakdown of the total amount. The breakdown includes the amount of emissions of the first greenhouse gas EC and the amount of emissions of the second greenhouse gas OC. Regarding the amount of emissions of the second greenhouse gas OC, the breakdown of the amount of emissions of the second greenhouse gas OC during the heating season and the amount of emissions of the second greenhouse gas OC during the cooling season is displayed.

[0122] The first control unit 12 is a processor such as a CPU in which application software capable of executing the evaluation method of the present embodiment is installed. The application software installed in the microprocessor is an evaluation program that causes a computer to execute the evaluation method of the present embodiment. At least some of the components constituting the first control unit 12 are realized, for example, by a processor such as a CPU executing the evaluation program stored in the storage unit 13.

[0123] At least some of the functions of the first control unit 12 described above may be realized by hardware including circuit units such as a large-scale integration (LSI), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), and a graphics processing unit (GPU), or may be realized by a combination of software and hardware. The storage unit 13 is realized by a storage medium such as a random-access memory (RAM), a read-only memory (ROM), a hard disk drive (HDD), and a flash memory. The storage unit in which the evaluation program is stored may be provided separately from the storage unit 13. In this case, the storage unit in which the evaluation program is stored may be provided inside the evaluation device 10 or outside the evaluation device 10.

[0124] The evaluation device 10 includes a receiving unit 14 that receives component information BI related to components constituting a building B, a calculation unit 15 that calculates an environmental load assessment value EL that represents the environmental load associated with the life cycle of the building B based on the component information BI, and an output unit 16 that outputs the environmental load assessment value EL. The calculation unit 15 calculates, based on the component information BI, at least one of a first emission amount EM1 of a first greenhouse gas EC that is emitted due to the building B from its construction to its disposal and a second emission amount EM2 of a second greenhouse gas OC that is emitted due to the operation of the building B, and calculates the environmental load assessment value EL based on the calculated at least one of the emission amounts. A user of the evaluation device 10 can input the component information BI to the evaluation device 10 via an input unit 23 of a user terminal 20 or the like to acquire the environmental load assessment value EL that represents the environmental load associated with the life cycle of the building B based on at least one of the first emission amount EM1 of the first greenhouse gas EC and the second emission amount EM2 of the second greenhouse gas OC. The evaluation device 10 can make it easier for the user to obtain the environmental load evaluation value EL that represents the environmental load related to the life cycle of the building B.

[0125] The amount of energy consumption equivalent to the amount of emissions of the second greenhouse gas OC, which can be obtained by inputting the necessary information into the "Energy Consumption Performance Calculation Program (Residential Version)," is the amount of energy consumption of the entire building B. The "Energy Consumption Performance Calculation Program (Residential Version)" cannot individually calculate the amount of energy consumption equivalent to the amount of emissions of the second greenhouse gas OC caused by each of the components that make up building B. Even when using the "Energy Consumption Performance Calculation Program (Residential Version)," the user was unable to individually obtain the amount of emissions of the second greenhouse gas OC caused by each of the components that make up building B.

[0126] In this embodiment, the second emissions EM2 are emissions of a second greenhouse gas OC attributable to the multiple elements E1. The calculation unit 15 calculates the second emissions EM2 using a program similar to the specified simulation program used to evaluate building B based on the component information BI. The calculation unit 15 calculates an element value related to the emission of the second greenhouse gas OC, i.e., heat quantity, for each of the multiple elements E1 based on at least one of the amount of transverse heat loss Qf that moves between the inside and outside of building B through the components that make up building B, the amount of solar heat gain Qs that moves from the outside to the inside of building B through the components that make up building B, the amount of ventilation Va in building B, and the heat quantity Qe of a heat-generating element Hb in building B. For at least one element E1, the calculation unit 15 calculates the amount of emission of the second greenhouse gas OC attributable to element E1, of the second emissions EM2, based on the ratio of the element value (heat quantity) of element E1 to the total value of the element values ​​(heat quantities) of the multiple elements E1. This allows the user to obtain the amount of emission of the second greenhouse gas OC attributable to the element E1 from the second emissions EM2 calculated using a program similar to the specified simulation program. Because the element E1 includes components that constitute the building B, the evaluation device 10 calculates the amount of emission of the second greenhouse gas OC attributable to the components that constitute the building B, allowing the user to obtain the amount of emission of the second greenhouse gas OC attributable to the components that constitute the building B, such as the windows Wd, from the second emissions EM2. In this embodiment, the evaluation device 10 calculates the amount of emission of the second greenhouse gas OC attributable to each of the exterior wall Wa, the windows Wd, the floor F, and the ceiling Ce. This allows the user to obtain the amount of emission of the second greenhouse gas OC attributable to each of the components that constitute the building B.

[0127] The evaluation method of this embodiment includes calculating the second emissions EM2 using a program similar to the specified simulation program used to evaluate building B based on the component information BI, calculating an element value related to the emissions of the second greenhouse gas OC for each of multiple elements E1 based on at least one of the amount of transverse heat loss Qf that moves between the interior and exterior of building B through the components that make up building B, the amount of solar heat gain Qs that moves from the exterior to the interior of building B through the components that make up building B, the amount of ventilation Va in building B, and the amount of heat Qe from a heat-generating element Hb in building B, and calculating, for at least one element E1, the amount of second greenhouse gas OC emissions attributable to element E1 of the second emissions EM2 based on the ratio of the element value (heat quantity) of element E1 to the total value of the element values ​​(heat quantity) of the multiple elements E1. As with the evaluation device 10 described above, the evaluation method of this embodiment makes it easy for a user to obtain an environmental load evaluation value EL that represents the environmental load associated with the life cycle of building B.

[0128] The multiple elements E1 include the exterior walls Wa of building B, the windows Wd of building B, the floors of building B, the ceiling of building B, and the ventilation Ve performed in building B. This allows the evaluation device 10 to accurately calculate the total element value (calorific value) of the multiple elements E1. Therefore, the evaluation device 10 can more accurately calculate the emission amount of the second greenhouse gas OC caused by the element E1 included in the second emission amount EM2 based on the proportion of the element value (calorific value) of the element E1. The user can more accurately obtain the emission amount of the second greenhouse gas OC caused by the components that make up building B.

[0129] The component information BI includes information on a first skin area SA1 of the exterior surface of building B facing a predetermined direction. The calculation unit 15 multiplies the first skin area SA1 by the ratio Ra of the area of ​​the exterior surface of a component constituting the reference building facing the predetermined direction to a second skin area SA2 of the exterior surface of the reference building facing the predetermined direction, to calculate an estimated area EA, which is the area of ​​the exterior surface of the component constituting building B facing the predetermined direction. Based on the estimated area EA, the calculation unit 15 calculates at least one of the amount of transverse heat loss Qf and the amount of solar heat gain Qs that moves through the component. In other words, the evaluation method of this embodiment includes multiplying the first skin area SA1 by the ratio Ra of the area of ​​the exterior surface of a component of the reference building facing the predetermined direction to the second skin area SA2 of the exterior surface facing the predetermined direction of the reference building to calculate an estimated area EA of the exterior surface of the component of building B facing the predetermined direction, and calculating at least one of the thermal breakthrough heat loss Qf and the solar heat gain Qs that travel through the component based on the estimated area EA. This allows the evaluation device 10 to calculate at least one of the thermal breakthrough heat loss Qf and the solar heat gain Qs for the component of building B based on information about the first skin area SA1. The evaluation device 10 can more appropriately calculate the element values ​​(heat quantities) of the multiple elements E1 based on at least one of the calculated thermal breakthrough heat loss Qf and the solar heat gain Qs. By inputting the first outer skin area SA1 without inputting the outer area of ​​each component that makes up building B into the evaluation device 10, the user can more accurately obtain the emission amount of the second greenhouse gas OC caused by the component components that make up building B.

[0130] The calculation unit 15 calculates at least one of the breakthrough heat loss Qf and the solar radiation heat gain Qs based on information about weather conditions used in the specified simulation program. In other words, the evaluation method of this embodiment includes calculating at least one of the breakthrough heat loss Qf and the solar radiation heat gain Qs based on information about weather conditions used in the specified simulation program. This allows the evaluation device 10 to more accurately calculate at least one of the breakthrough heat loss Qf and the solar radiation heat gain Qs.

[0131] The calculation unit 15 calculates the breakthrough heat loss Qf, the solar heat gain Qs, the ventilation heat loss Qv based on the ventilation rate Va in the building B, and the heat generation amount Qe of the heat-generating element Hb for each target period of a predetermined period that includes multiple target periods. The calculation unit 15 calculates each element value of each element E1 for the predetermined period based on the breakthrough heat loss Qf, the solar heat gain Qs, the ventilation heat loss Qv, and the heat generation amount Qe of the heat-generating element Hb for the multiple target periods. In other words, the evaluation method of this embodiment includes calculating the breakthrough heat loss Qf, the solar heat gain Qs, the ventilation heat loss Qv based on the ventilation rate Va in the building B, and the heat generation amount Qe of the heat-generating element Hb for each target period included in the predetermined period, and calculating each element value of each element E1 for the predetermined period based on the breakthrough heat loss Qf, the solar heat gain Qs, the ventilation heat loss Qv, and the heat generation amount Qe of the heat-generating element Hb for the multiple target periods. This allows the evaluation device 10 to change the method and conditions for calculating the element value of each element E1 for each of multiple target periods, thereby enabling more accurate calculation of the element value of each element E1. In this embodiment, the evaluation device 10 can calculate the element value of each element E1 more accurately by correcting the calculated values ​​when the amount of heat flowing into building B during the heating season is greater than the amount of heat flowing out of building B, and when the temperature outside building B is lower than the temperature inside building B during the cooling season.

[0132] If the target period is the heating season and the first sum Sm1 of the solar heat gain Qsh and the heat generation amount Qeh of the heat-generating element Hb during the target period is greater than the second sum Sm2 of the transient heat loss Qfh and the ventilation heat loss Qvh, the calculation unit 15 corrects the first sum Sm1 to the same value as the second sum Sm2. The calculation unit 15 corrects the solar heat gain Qsh and the heat generation amount Qeh of the heat-generating element Hb so that the ratio of the solar heat gain Qsh and the heat generation amount Qeh of the heat-generating element Hb to the corrected first sum Sm1a is the same as the ratio of the solar heat gain Qsh and the heat generation amount Qeh of the heat-generating element Hb to the first sum Sm1 before correction. If the first sum Sm1 is greater than the second sum Sm2, the amount of heat given to the room by heating is at most the amount of heat flowing out of the room. Therefore, when the first total value Sm1 is greater than the second total value Sm2, the evaluation device 10 corrects the first total value Sm1 of the solar heat gain Qsh and the heat generation amount Qeh of the heat generation element Hb to the same value as the second total value Sm2, which is the total value of the heat flowing out of the room, thereby more accurately calculating the solar heat gain Qsh and the heat generation amount Qeh of the heat generation element Hb during the heating period.

[0133] When the target period is the cooling season and the temperature outside building B is lower than the temperature inside building B during the target period, the calculation unit 15 calculates the amount of heat release Qr released from the inside of building B to the outside of building B within a range equal to or less than the heat release Qec of the heat-generating element Hb. The calculation unit 15 calculates the element value of at least one element E1 based on the heat release Qr. In other words, the evaluation method of this embodiment includes calculating the amount of heat release Qr released from the inside of building B to the outside of building B within a range equal to or less than the heat release Qec of the heat-generating element Hb when the target period is the cooling season and the temperature outside building B is lower than the temperature inside building B during the target period, and calculating the element value of at least one element E1 based on the heat release Qr. For example, during the nighttime hours of the cooling season, the temperature outside building B may be lower than the temperature inside building B, i.e., the set temperature of the air conditioner AC. In this case, the components constituting building B release heat from the inside of building B to the outside of building B. In this case, the heat released to the outside of building B through the components that make up building B, i.e., the heat release amount Qr, is at most the heat release amount Qec of the heat-generating element Hb within building B. By taking into account the heat release amount Qr, the evaluation device 10 can more accurately calculate the element value of element E1.

[0134] In this embodiment, the evaluation device 10 estimates the estimated area EA as described above and performs correction according to the conditions described above, thereby reducing the amount of component information BI input by the user, and can easily and accurately calculate, through simple calculations, the amount of emission of the second greenhouse gas OC caused by the components that make up building B. Because the user does not have to go through the trouble of inputting the component information BI into the evaluation device 10, the user can easily use the evaluation device 10 to obtain the amount of emission of the second greenhouse gas OC caused by each component that makes up building B.

[0135] The ventilation-induced heat quantity Qcc in the cooling season includes a ventilation heat loss quantity Qvc related to the temperature that fluctuates due to the ventilation Ve performed in the building B, and a cold heat quantity Qdc related to the humidity that fluctuates due to the ventilation Ve performed in the building B. This allows the evaluation device 10 to more accurately calculate the ventilation-induced heat quantity Qcc in the cooling season.

[0136] The "LCCM Conformity Assessment Tool" used for LCCM housing certification calculates the emissions of the first greenhouse gas (EC) by inputting several pieces of information about Building B by the user, but the emissions of the second greenhouse gas (OC) are not calculated from the information input by the user into the "LCCM Conformity Assessment Tool." Users of the "LCCM Conformity Assessment Tool" used for LCCM housing certification had to input information separately into the "Energy Consumption Performance Calculation Program (Residential Version)," a program separate from the "LCCM Conformity Assessment Tool," to obtain the energy consumption equivalent to the emissions of the second greenhouse gas (OC), and then input that energy consumption into the "LCCM Conformity Assessment Tool." Users of the "LCCM Conformity Assessment Tool" could not obtain an assessment value of the environmental impact over the entire life cycle of Building B that takes into account the emissions of the first greenhouse gas (EC) and the emissions of the second greenhouse gas (OC) unless they input information separately into the "LCCM Conformity Assessment Tool" and the "Energy Consumption Performance Calculation Program (Residential Version)."

[0137] The evaluation device 10 includes a receiving unit 14 that receives component information BI related to components constituting a building B, a calculation unit 15 that calculates an environmental load assessment value EL that represents the environmental load associated with the entire life cycle of the building B based on the component information BI, and an output unit 16 that outputs the environmental load assessment value EL. The calculation unit 15 calculates, based on the component information BI, a first emission amount EM1 of a first greenhouse gas EC that is emitted due to the building B from its construction to its disposal and a second emission amount EM2s of a second greenhouse gas OC that is emitted due to the operation of the building B, and calculates the environmental load assessment value EL based on the calculated first emission amount EM1 and second emission amount EM2s. A user of the evaluation device 10 can input the component information BI to the evaluation device 10 via an input unit 23 of a user terminal 20 or the like to obtain the environmental load assessment value EL that represents the environmental load associated with the entire life cycle of the building B based on the first emission amount EM1 of the first greenhouse gas EC and the second emission amount EM2s of the second greenhouse gas OC. A user who uses the evaluation device 10 can obtain the environmental load evaluation value EL without having to input information separately into multiple devices or multiple programs. The evaluation device 10 makes it easy for the user to obtain the environmental load evaluation value EL that represents the environmental load related to the entire life cycle of building B.

[0138] The evaluation method of this embodiment includes receiving component information BI related to components constituting building B, calculating a first emission amount EM1 of a first greenhouse gas EC emitted attributable to building B from its construction to its disposal and a second emission amount EM2s of a second greenhouse gas OC emitted attributable to the operation of building B based on the component information BI, calculating an environmental load evaluation value EL representing the environmental load associated with the entire life cycle of building B based on the calculated first emission amount EM1 and second emission amount EM2s, and outputting the environmental load evaluation value EL. Similar to the evaluation device 10 described above, the evaluation method of this embodiment makes it easy for a user to obtain the environmental load evaluation value EL representing the environmental load associated with building B's entire life cycle.

[0139] The components constituting the building B include a window Wd, which is a predetermined component constituting part of the building B. The calculation unit 15 calculates the first emission amount EM1 and the second emission amount EM2s using common component information BI related to the window Wd, which is a predetermined component constituting part of the building B. In other words, the evaluation method of this embodiment calculates the first emission amount EM1 and the second emission amount EM2s using common component information BI related to the window Wd, which is a predetermined component constituting part of the building B. Because at least a portion of the component information BI for calculating the first emission amount EM1 and the component information BI for calculating the second emission amount EM2s are common, the user can reduce the effort required to input the component information BI related to the window Wd into the evaluation device 10. By reducing the user's effort, the evaluation device 10 can make it easier for the user to obtain the environmental load evaluation value EL. Because the first emission amount EM1 and the second emission amount EM2s are calculated using the component information BI related to the window Wd, the evaluation device 10 can improve the calculation accuracy of the portion of the first emission amount EM1 and the second emission amount EM2s attributable to the window Wd.

[0140] The "LCCM Compliance Assessment Tool" used for LCCM housing certification does not have a field for entering information about windows Wd, such as the number and type of windows Wd. The first greenhouse gas EC emissions calculated by the "LCCM Compliance Assessment Tool" are calculated based on the average number of windows Wd predetermined for the site area of ​​Building B, and the average type of windows Wd predetermined for the class of Building B. The first greenhouse gas EC emissions calculated by the "LCCM Compliance Assessment Tool" do not reflect information about the windows Wd actually installed in Building B, resulting in low calculation accuracy.

[0141] The calculation unit 15 of the evaluation device 10 calculates the third emission amount EM3 of the first greenhouse gas EC emitted due to building B based on the component information BI using the calculation method used in the ``LCCM compliance assessment tool'' used for LCCM housing certification, calculates the fourth emission amount EM4 of the first greenhouse gas EC emitted due to window Wd from the third emission amount EM3, calculates the fifth emission amount EM5 of the first greenhouse gas EC emitted due to window Wd using the component information BI for window Wd and the greenhouse gas emission intensity for window Wd, and calculates the first emission amount EM1 by subtracting the fourth emission amount EM4 from the third emission amount EM3 and adding the fifth emission amount EM5 to the third emission amount EM3. The evaluation device 10 can calculate the first emission amount EM1 of the first greenhouse gas EC by replacing the portion of the third emission amount EM3, which is the same as the emission amount of the first greenhouse gas EC calculated in the "LCCM compliance assessment tool," that corresponds to the emission amount of the first greenhouse gas EC attributable to the window Wd with the emission amount calculated based on the input component information BI for the window Wd. The evaluation device 10 can improve the calculation accuracy of the first emission amount EM1 of the first greenhouse gas EC. The evaluation device 10 allows the user to obtain a more accurate environmental load evaluation value EL for the window Wd. For example, by setting the comparison home displayed on the first output screen 27 to a home that differs from the proposed home only in terms of the window Wd, the user can accurately know how much the environmental load evaluation value EL will change if the window Wd is changed.

[0142] The evaluation method of this embodiment includes calculating a third emission amount EM3 of a first greenhouse gas EC due to building B using a calculation method used in the "LCCM Compliance Assessment Tool" used for LCCM housing certification based on the component information BI, calculating a fourth emission amount EM4 of the first greenhouse gas EC due to window Wd from the third emission amount EM3, calculating a fifth emission amount EM5 of the first greenhouse gas EC due to window Wd using the component information BI for window Wd and the greenhouse gas emission intensity for window Wd, and calculating a first emission amount EM1 by subtracting the fourth emission amount EM4 from the third emission amount EM3 and adding the fifth emission amount EM5 to the third emission amount EM3. As with the evaluation device 10 described above, the evaluation method of this embodiment allows a user to obtain a more accurate environmental impact evaluation value EL for window Wd.

[0143] The predetermined component constituting part of the building B is a window Wd. The evaluation device 10 can accurately calculate the amount of emission of the first greenhouse gas EC caused by the window Wd, and can more accurately calculate the environmental load evaluation value EL, which represents the environmental load associated with the entire life cycle of the building B.

[0144] The component information BI related to the window Wd includes product information and dimensional information about the window Wd. The evaluation device 10 can more accurately calculate the amount of emission of the first greenhouse gas EC caused by the window Wd using the product information and dimensional information about the window Wd. The evaluation device 10 can more accurately calculate the environmental load evaluation value EL, which represents the environmental load associated with the entire life cycle of the building B, using the accurately calculated amount of emission of the first greenhouse gas EC caused by the window Wd.

[0145] The output unit 16 outputs the first emission amount EM1 and the second emission amount EM2s. In other words, the evaluation method of this embodiment includes outputting the first emission amount EM1 and the second emission amount EM2s. The user can obtain the first emission amount EM1 and the second emission amount EM2s, for example, by displaying the output from the output unit 16 on the display unit 24. The evaluation device 10 allows the user to know the environmental loads associated with the entire life cycle of building B for each of the first greenhouse gas EC and the second greenhouse gas OC.

[0146] The evaluation system 100 includes an evaluation device 10 and a user terminal 20 capable of communicating with the evaluation device 10. The evaluation device 10 is a server device capable of communicating with the user terminal 20. The user terminal 20 has an input unit 23 for inputting component information BI received by the reception unit 14 and a display unit 24 for displaying information output from the output unit 16. A user can easily use the evaluation device 10 by communicating with the evaluation device 10 via the user terminal 20. The user can easily input the component information BI into the evaluation device 10, which is a server device capable of communicating with the user terminal 20, by inputting the component information BI into the user terminal 20 via the input unit 23. The user can easily know the environmental load evaluation value EL by displaying the environmental load evaluation value EL sent from the evaluation device 10, which is a server device, on the display unit 24. The evaluation system 100 is a single system in which all processes from inputting the component information BI to evaluating a building B are completed. The evaluation system 100 makes it easy for a user to obtain an environmental load assessment value EL that represents the environmental load associated with the entire life cycle of building B. The user terminal 20 has an input unit 23 through which the user inputs component information BI and a display unit 24 through which the user obtains the environmental load assessment value EL, and is therefore a terminal that performs the functions necessary to enable the user to easily obtain the environmental load assessment value EL. The evaluation system 100 is a system that can be used via the user terminal 20, and the effect of enabling the user to easily obtain the environmental load assessment value EL is an effect that is realized via the user terminal 20.

[0147] (Second embodiment) In the following description, the same components as those in the above-described embodiment may be denoted by the same reference numerals as appropriate, and the description thereof may be omitted. As shown in FIG. 15, the evaluation device 210 of this embodiment is a personal computer on which an evaluation program is installed. The evaluation device 210 includes a computer main body 210a, an input unit 223, and a display unit 224. The input unit 223 is a keyboard and a mouse connected to the computer main body 210a. The display unit 224 is a display screen connected to the computer main body 210a. As shown in FIG. 16, the computer main body 210a includes a control unit 212 and a storage unit 13.

[0148] The control unit 212 includes a receiving unit 214, a calculation unit 215, and an output unit 216. The receiving unit 214 receives component information BI input by the user via the input unit 223. The information output from the output unit 216 is displayed on the display unit 224. The evaluation device 210 calculates an environmental load evaluation value EL representing the environmental load associated with the life cycle of building B, in the same manner as the evaluation device 10 of the first embodiment. In this embodiment, a user can input component information BI directly to the evaluation device 210 without using a user terminal, and can obtain the environmental load evaluation value EL without using a user terminal. Similarly to the first embodiment, the evaluation device 210 can more easily allow a user to obtain the environmental load evaluation value EL representing the environmental load associated with the life cycle of building B. Other configurations of the evaluation device 210 are similar to those of the evaluation device 10 of the first embodiment.

[0149] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the configurations of the above-described embodiments, and the following configurations and methods may also be adopted.

[0150] The calculation unit of the evaluation device may use different component information BI when calculating the first emission amount EM1 of the first greenhouse gas EC and the second emission amount EM2s of the second greenhouse gas OC. The predetermined component constituting a part of the building B may be the door D. In this case, similar to the window Wd in the first embodiment, the user can obtain a more accurate environmental load evaluation value EL for the door D. The predetermined component constituting a part of the building B may include multiple components. Any of the components constituting the building B may correspond to the predetermined component, for example, the exterior wall, ceiling, floor, ventilation equipment, etc. In this case, similar to the window Wd in the first embodiment, the user can obtain a more accurate environmental load evaluation value EL for each component constituting the building B. The environmental load evaluation value EL output from the output unit of the evaluation device may be any value that allows the user to know the environmental load related to the life cycle of the building B. The environmental load evaluation value EL may include the first emission amount EM1 of the first greenhouse gas EC or the second emission amount EM2s of the second greenhouse gas OC. The calculation unit of the evaluation device may calculate only the evaluation value for the first emission amount EM1 of the first greenhouse gas EC as the environmental load evaluation value EL, or may calculate only the evaluation value for the second emission amount EM2 of the second greenhouse gas OC as the environmental load evaluation value EL.

[0151] The calculation unit of the evaluation device may calculate the environmental load assessment value EL in any manner as long as it calculates at least one of the first emission amount EM1 of the first greenhouse gas EC and the second emission amount EM2 of the second greenhouse gas OC and calculates the environmental load assessment value EL based on the calculated at least one emission amount. The calculation unit may calculate only the first emission amount EM1 of the first greenhouse gas EC, or only the second emission amount EM2 of the second greenhouse gas OC. The calculation unit may calculate element values ​​related to the emission of the second greenhouse gas OC of the multiple elements E1 without using one or more but not more than three elements: the amount of transverse heat loss Qf that moves between the inside and outside of building B through components constituting building B, the amount of solar heat gain Qs that moves from the outside to the inside of building B through components constituting building B, the amount of ventilation Va in building B, and the amount of heat generated Qe of a heat-generating element Hb in building B. The element value of element E1 calculated by the calculation unit is not particularly limited as long as it is a value related to the emission of the second greenhouse gas OC. The element value of element E1 may be the emission value of the second greenhouse gas OC.

[0152] The prescribed simulation program may be a simulation program other than the "Energy Consumption Performance Calculation Program (Residential Version)" as long as it is a simulation program used to evaluate building B and can calculate the second emission EM2. Examples of the prescribed simulation program include "One Click LCA" provided by One Click LCA, "Athena Impact Estimator for Buildings" provided by Athena Sustainable Materials Institute, and "Tally" provided by Building Transparency. The prescribed simulation program may be a program capable of calculating information used for long-term quality housing certification in Japan, or a program capable of calculating information used for certified low-carbon housing certification in Japan. The predetermined assessment tool may be an assessment tool other than the LCCM conformance assessment tool used for LCCM (registered trademark) housing certification. The predetermined assessment tool may be, for example, an assessment tool used to assess compliance with energy conservation standards in Japan. The predetermined assessment tool may be, for example, an assessment tool used for long-term quality housing certification in Japan, or an assessment tool used for certified low-carbon housing certification in Japan.

[0153] The building B to be evaluated by the evaluation device is not limited to the example shown in FIG. 3 and may be any type of building. Building B is not limited to a detached house, but may also be a condominium, apartment, or other type of housing complex. When building B is a housing complex, the evaluation device may calculate an environmental load evaluation value EL for the entire building, or may calculate an environmental load evaluation value EL for each room type based on location in the housing complex. Examples of room types based on location include a central dwelling unit on an intermediate floor and a dwelling unit at the top floor. The evaluation device calculates an environmental load evaluation value EL for each room type based on location in the housing complex, taking into account the heat loss, and multiplies each environmental load evaluation value EL for each type by the number of dwelling units, and then adds up the values ​​to calculate the environmental load evaluation value EL for the entire building. Building B is not limited to a dwelling unit having multiple rooms, but may also be a single room itself.

[0154] The present disclosure includes the following aspects. [1] An evaluation device comprising: a reception unit that receives component information regarding components that constitute a building; a calculation unit that calculates an environmental load assessment value that represents the environmental load related to the life cycle of the building based on the component information; and an output unit that outputs the environmental load assessment value, wherein the calculation unit calculates, based on the component information, at least one of a first emission amount of a first greenhouse gas emitted due to the building from its construction to its disposal and a second emission amount of a second greenhouse gas emitted due to the operation of the building, and calculates the environmental load assessment value based on the calculated at least one emission amount. [2] The evaluation device described in [1], wherein the second emissions are emissions of the second greenhouse gas caused by a plurality of elements, and the calculation unit calculates the second emissions using a program similar to a specified simulation program used to evaluate the building based on the component information, calculates an element value related to the emissions of the second greenhouse gas for each of the plurality of elements based on at least one of the amount of heat loss that moves between the inside and outside of the building through the components that make up the building, the amount of solar heat gain that moves from the outside to the inside of the building through the components that make up the building, the amount of ventilation in the building, and the heat value of a heat-generating element in the building, and calculates, for at least one of the elements, the amount of emission of the second greenhouse gas caused by the element based on the ratio of the element value of the element to the total value of the element values ​​of the plurality of elements. [3] The evaluation device described in [2], wherein the plurality of elements include exterior walls of the building, windows of the building, floors of the building, ceilings of the building, and ventilation performed in the building. [4] The evaluation device described in [2] or [3], wherein the component information includes information on a first skin area of ​​the exterior surface of the building facing a predetermined direction, and the calculation unit multiplies the first skin area by the ratio of the area of ​​the exterior surface of the component constituting the reference building facing the predetermined direction to the second skin area of ​​the exterior surface of the reference building facing the predetermined direction to calculate an estimated area, and calculates at least one of the amount of heat loss through the component and the amount of solar heat gain based on the estimated area. [5] An evaluation device described in any one of [2] to [4], wherein the calculation unit calculates at least one of the amount of heat loss through the room and the amount of solar heat gain based on information on weather conditions used in the specified simulation program. [6] The evaluation device described in any one of [2] to [5], wherein the calculation unit calculates the amount of thermal penetration, the amount of solar heat gain, the amount of ventilation-induced heat resulting from ventilation performed in the building, and the amount of heat generated by the heat-generating elements for each target period that includes multiple target periods, and calculates each element value for the specified period based on the amount of thermal penetration, the amount of solar heat gain, the amount of ventilation-induced heat, and the amount of heat generated by the heat-generating elements for the multiple target periods. [7] The evaluation device described in [6], wherein, when the target period is a heating season and a first sum of the solar heat gain and the heat generation amount of the heat generation element during the target period is greater than a second sum of the heat loss due to heat flow and the ventilation-induced heat, the calculation unit corrects the first sum to the same value as the second sum, and corrects the solar heat gain and the heat generation amount of the heat generation element so that the ratio of the solar heat gain and the heat generation amount of the heat generation element to the corrected first sum is the same as the ratio of the solar heat gain and the heat generation amount of the heat generation element to the first sum before correction. [8] The evaluation device described in [6] or [7], wherein the calculation unit calculates the amount of heat released from the inside of the building to the outside of the building within a range equal to or less than the heat generation amount of the heat-generating element when the target period is a cooling season and the temperature outside the building is lower than the temperature inside the building during the target period, and calculates at least one of the element values ​​based on the amount of heat released. [9] An evaluation device according to any one of [6] to [8], wherein the ventilation-induced heat quantity during the cooling period includes a heat quantity related to temperature that fluctuates due to ventilation performed in the building, and a heat quantity related to humidity that fluctuates due to ventilation performed in the building.

[10] The evaluation device described in any one of [1] to [9], wherein the calculation unit calculates the first emission amount and the second emission amount based on the component information, and calculates the environmental load evaluation value based on the calculated first emission amount and second emission amount.

[11] The evaluation device described in

[10] , wherein the components constituting the building include a specified component constituting part of the building, and the calculation unit calculates the first emission amount and the second emission amount using common component information regarding the specified component.

[12] The evaluation device described in

[11] , wherein the calculation unit calculates a third emission amount of the first greenhouse gas emitted due to the building based on the component information using a calculation method used in a specified judgment tool, calculates a fourth emission amount of the first greenhouse gas emitted due to the specified component among the third emission amounts, calculates a fifth emission amount of the first greenhouse gas emitted due to the specified component using the component information regarding the specified component and a greenhouse gas emission intensity for the specified component, and calculates the first emission amount by subtracting the fourth emission amount from the third emission amount and adding the fifth emission amount to the third emission amount.

[13] The evaluation device according to

[12] , wherein the predetermined assessment tool is an LCCM conformity assessment tool used for LCCM (registered trademark) housing certification.

[14] The evaluation device according to any one of

[11] to

[13] , wherein the predetermined component is a window or a door.

[15] The evaluation device according to any one of

[11] to

[14] , wherein the component information relating to the specified component includes product information of the specified component and dimensional information of the specified component.

[16] The evaluation device according to any one of [1] to

[15] , wherein the output unit outputs the first emission amount and the second emission amount.

[17] An evaluation system comprising: an evaluation device according to any one of [1] to

[16] ; and a user terminal capable of communicating with the evaluation device, wherein the evaluation device is a server device capable of communicating with the user terminal, and the user terminal has an input unit for inputting the component information received by the reception unit, and a display unit for displaying the information output from the output unit.

[18] A user terminal capable of communicating with an evaluation device that calculates an environmental load assessment value that represents the environmental load related to the life cycle of a building, the user terminal comprising an input unit and a display unit, wherein the evaluation device has a reception unit that receives component information related to components that constitute the building, a calculation unit that calculates the environmental load assessment value based on the component information, and an output unit that outputs the environmental load assessment value, wherein the calculation unit calculates, based on the component information, at least one of a first emission amount of a first greenhouse gas emitted due to the building from its construction to its disposal and a second emission amount of a second greenhouse gas emitted due to the operation of the building, and calculates the environmental load assessment value based on the calculated at least one emission amount, wherein the input unit is a part for inputting the component information received by the reception unit, and the display unit is a part that displays information output from the evaluation device.

[19] The user terminal described in

[18] , wherein the second emissions are emissions of the second greenhouse gas caused by a plurality of elements, and the calculation unit calculates the second emissions using a program similar to a specified simulation program used to evaluate the building based on the component information, calculates an element value related to the emissions of the second greenhouse gas for each of the plurality of elements based on at least one of the amount of heat loss that moves between the inside and outside of the building through the components that make up the building, the amount of solar heat gain that moves from the outside to the inside of the building through the components that make up the building, the amount of ventilation in the building, and the heat value of a heat-generating element in the building, and calculates, for at least one of the elements, the amount of emission of the second greenhouse gas caused by the element based on the ratio of the element value of the element to the total value of the element values ​​of the plurality of elements.

[20] The user terminal described in

[18] or

[19] , wherein the calculation unit calculates the first emission amount and the second emission amount based on the component information, and calculates the environmental load assessment value based on the calculated first emission amount and second emission amount.

[21] An evaluation method comprising: receiving component information regarding components that constitute a building; calculating, based on the component information, an amount of at least one of a first emission of a first greenhouse gas that is emitted due to the building from its construction to its disposal; and a second emission of a second greenhouse gas that is emitted due to the operation of the building; calculating, based on the calculated amount of at least one of the emissions, an environmental load evaluation value that represents the environmental load related to the life cycle of the building; and outputting the environmental load evaluation value.

[22] The evaluation method described in

[21] , wherein the second emissions are emissions of the second greenhouse gas caused by a plurality of elements, and the second emissions are calculated using a program similar to a specified simulation program used to evaluate the building based on the component information, and an element value related to the emissions of the second greenhouse gas is calculated for each of the plurality of elements based on at least one of the amount of heat loss that moves between the inside and outside of the building through the components that make up the building, the amount of solar heat gain that moves from the outside to the inside of the building through the components that make up the building, the amount of ventilation in the building, and the heat value of a heat-generating element in the building, and the amount of emission of the second greenhouse gas caused by at least one of the elements is calculated based on the ratio of the element value of the element to the total value of the element values ​​of the plurality of elements.

[23] The evaluation method described in

[22] , wherein the plurality of elements include the exterior walls of the building, the windows of the building, the floors of the building, the ceilings of the building, and ventilation provided in the building.

[24] The evaluation method described in

[22] or

[23] , wherein the component information includes information on a first skin area of ​​the exterior surface of the building facing a predetermined direction, and the ratio of the area of ​​the exterior surface of the component constituting the reference building facing the predetermined direction to the second skin area of ​​the exterior surface of the reference building facing the predetermined direction is multiplied by the first skin area to calculate an estimated area of ​​the exterior surface of the component constituting the building facing the predetermined direction, and at least one of the amount of heat loss through the component and the amount of solar heat gain is calculated based on the estimated area.

[25] An evaluation method according to any one of

[22] to

[24] , which calculates at least one of the amount of heat loss through the atmosphere and the amount of solar heat gain based on information on meteorological conditions used in the specified simulation program.

[26] An evaluation method according to any one of

[22] to

[25] , which calculates the amount of heat loss through the building, the amount of solar heat gain, the amount of heat due to ventilation in the building, and the amount of heat generated by the heat-generating elements for each of a plurality of target periods included in a predetermined period, and calculates the value of each element for the predetermined period based on the amount of heat loss through the building, the amount of solar heat gain, the amount of heat due to ventilation, and the amount of heat generated by the heat-generating elements for the plurality of target periods.

[27] The evaluation method described in

[26] , wherein, when the target period is a heating season and a first sum of the solar heat gain and the heat generation amount of the heat generation element during the target period is greater than a second sum of the heat loss due to heat flow and the ventilation-induced heat, the first sum is corrected to the same value as the second sum, and the solar heat gain and the heat generation amount of the heat generation element are respectively corrected so that the ratio of the solar heat gain and the heat generation amount of the heat generation element to the corrected first sum is the same as the ratio of the solar heat gain and the heat generation amount of the heat generation element to the first sum before correction.

[28] The evaluation method described in

[26] or

[27] , wherein when the target period is a cooling season and the temperature outside the building is lower than the temperature inside the building during the target period, the amount of heat released from the inside of the building to the outside of the building is calculated within a range equal to or less than the heat generation amount of the heat-generating element, and at least one of the element values ​​is calculated based on the amount of heat released.

[29] The evaluation method described in any one of

[26] to

[28] , wherein the ventilation-induced heat quantity during the cooling period includes a heat quantity related to temperature that fluctuates due to ventilation performed in the building, and a heat quantity related to humidity that fluctuates due to ventilation performed in the building.

[30] The evaluation method according to any one of

[21] to

[29] , wherein the first emission amount and the second emission amount are calculated based on the component information, and the environmental load evaluation value is calculated based on the calculated first emission amount and second emission amount.

[31] The evaluation method described in

[30] , wherein the first emission amount and the second emission amount are calculated using common component information regarding a specified component that constitutes part of the building.

[32] The evaluation method described in

[31] , which calculates a third emission amount of the first greenhouse gas emitted attributable to the building based on the component information using a calculation method used in a specified assessment tool, calculates a fourth emission amount of the first greenhouse gas emitted attributable to the specified component among the third emission amounts, calculates a fifth emission amount of the first greenhouse gas emitted attributable to the specified component using the component information regarding the specified component and a greenhouse gas emission intensity for the specified component, and calculates the first emission amount by subtracting the fourth emission amount from the third emission amount and adding the fifth emission amount to the third emission amount.

[33] The evaluation method described in

[32] , wherein the predetermined assessment tool is an LCCM conformity assessment tool used for LCCM (registered trademark) housing certification.

[34] The evaluation method according to

[32] or

[33] , wherein the specified component is a window or a door.

[35] The evaluation method according to any one of

[32] to

[34] , wherein the component information relating to the specified component includes product information of the specified component and dimensional information of the specified component.

[36] The evaluation method according to any one of

[21] to

[35] , wherein the first emission amount and the second emission amount are output.

[37] An evaluation program that causes a computer to execute the evaluation method according to any one of

[21] to

[36] .

[0155] The configurations and methods described in this specification can be combined as appropriate within the scope of not being mutually contradictory. [Explanation of symbols]

[0156] 10,210...Evaluation device, 14,214...Reception unit, 15...Calculation unit, 16,216...Output unit, 20...User terminal, 23,223...Input unit, 24,224...Display unit, 100...Evaluation system, B...Building, BI...Component information, Ce...Ceiling, D...Door, E1...Element, EA...Estimated area, EC...First greenhouse gas, EL...Environmental load evaluation value, EM1, EM1a, EM1b...First emission amount, EM2, EM2c, EM2h, EM2s...Second emission amount, EM3...Third emission amount, EM4...Fourth emission amount Emission amount, EM5...5th emission amount, F...floor, Hb...heat generation element, Mca, Mcw, Mha, Mhw, Qs, Qsc, Qsh...solar heat gain, OC...second greenhouse gas, Qc, Qcc, Qch...heat due to ventilation, Qe, Qec, Qeh...heat generation amount, Qf, Qfc, Qfh...transparent heat loss, Qr...heat release amount, Ra...ratio, SA1...first outer shell area, SA2...second outer shell area, Sm1, Sm1a...first total value, Sm2...second total value, Va...ventilation amount, Ve...ventilation, Wa...exterior wall, Wd...window

Claims

1. a reception unit that receives component information related to components that constitute a building; a calculation unit that calculates an environmental load evaluation value that represents an environmental load related to a life cycle of the building based on the component information; an output unit that outputs the environmental load evaluation value; Equipped with The calculation unit Calculating, based on the component information, at least one of a first emission amount of a first greenhouse gas emitted due to the building from its construction to its disposal and a second emission amount of a second greenhouse gas emitted due to its operation; and and an evaluation device that calculates the environmental load evaluation value based on the calculated at least one of the emissions.

2. the second emissions are emissions of the second greenhouse gas attributable to a plurality of factors; The calculation unit calculating the second emissions using a program similar to a specified simulation program used to evaluate the building based on the component information; calculating an element value related to the emission amount of the second greenhouse gas for each of the plurality of elements based on at least one of the amount of heat loss caused by heat passing through the building between the inside and outside of the building via the components constituting the building, the amount of solar heat gained from the outside to the inside of the building via the components constituting the building, the amount of ventilation in the building, and the amount of heat generated by heat-generating elements in the building; 2. The evaluation device according to claim 1, wherein, for at least one of the elements, the amount of second greenhouse gas emissions attributable to the element is calculated based on a ratio of the element value of the element to a total value of the element values ​​of the plurality of elements.

3. The evaluation device according to claim 2 , wherein the plurality of elements include an exterior wall of the building, a window of the building, a floor of the building, a ceiling of the building, and ventilation performed in the building.

4. the component information includes information on a first skin area of ​​an exterior surface of the building facing a predetermined direction, The calculation unit multiplying the first skin area by the ratio of the area of ​​the outer surface of the component constituting the reference building facing the specified direction to the second skin area of ​​the outer surface of the reference building facing the specified direction, to calculate an estimated area, which is an estimate of the area of ​​the outer surface of the component constituting the building facing the specified direction; The evaluation device according to claim 2 , further comprising: a heat transfer device configured to calculate at least one of the amount of heat loss due to heat passing through the component and the amount of heat gain due to solar radiation based on the estimated area.

5. The evaluation device according to claim 2 , wherein the calculation unit calculates at least one of the amount of transverse heat loss and the amount of solar radiation heat gain based on information on meteorological conditions used in the specified simulation program.

6. The calculation unit Calculating the amount of heat loss due to heat transfer, the amount of solar radiation heat gain, the amount of heat generated by ventilation in the building, and the amount of heat generated by the heat-generating elements for each target period of a predetermined period including a plurality of target periods; The evaluation device according to claim 2 , wherein each of the element values ​​for the specified period is calculated based on the amount of heat loss due to heat transmission, the amount of solar heat gain, the amount of heat due to ventilation, and the amount of heat generated by the heat-generating element for the plurality of target periods.

7. The evaluation device described in claim 6, wherein the calculation unit corrects the first total value to the same value as the second total value when the target period is a heating season and a first sum of the solar heat gain and the heat generation amount of the heat generation element during the target period is greater than a second sum of the heat loss due to heat flow and the ventilation-induced heat, and corrects the solar heat gain and the heat generation amount of the heat generation element so that the ratio of the solar heat gain and the heat generation amount of the heat generation element to the corrected first total value is the same as the ratio of the solar heat gain and the heat generation amount of the heat generation element to the first total value before correction.

8. The evaluation device described in claim 6, wherein the calculation unit calculates the amount of heat released from the inside of the building to the outside of the building within a range less than the heat generation amount of the heat-generating element when the target period is a cooling season and the temperature outside the building is lower than the temperature inside the building during the target period, and calculates at least one of the element values ​​based on the amount of heat released.

9. The evaluation device described in claim 6, wherein the ventilation-induced heat quantity during the cooling period includes a heat quantity related to temperature that fluctuates due to ventilation performed in the building and a heat quantity related to humidity that fluctuates due to ventilation performed in the building.

10. The calculation unit Calculating the first emission amount and the second emission amount based on the component information; and The evaluation device according to claim 1 , wherein the environmental load evaluation value is calculated based on the calculated first emission amount and the calculated second emission amount.

11. The components constituting the building include predetermined components constituting a part of the building, The evaluation device according to claim 10 , wherein the calculation unit calculates the first emission amount and the second emission amount using the common member information related to the predetermined member.

12. The calculation unit calculating a third emission amount of the first greenhouse gas emitted due to the building by a calculation method used in a predetermined determination tool based on the component information; calculating a fourth emission amount of the first greenhouse gas emitted due to the predetermined component out of the third emission amount; calculating a fifth amount of emission of the first greenhouse gas caused by the specified component using the component information on the specified component and a greenhouse gas emission intensity for the specified component; The evaluation device according to claim 11 , wherein the first emission amount is calculated by subtracting the fourth emission amount from the third emission amount and adding the fifth emission amount to the third emission amount.

13. The evaluation device according to claim 12 , wherein the predetermined assessment tool is an LCCM (registered trademark) conformity assessment tool used for LCCM (registered trademark) home certification.

14. The evaluation device according to claim 11 , wherein the predetermined member is a window or a door.

15. The evaluation device according to claim 11 , wherein the component information regarding the predetermined component includes product information of the predetermined component and dimensional information of the predetermined component.

16. The evaluation device according to claim 1 , wherein the output unit outputs the first discharge amount and the second discharge amount.

17. An evaluation device according to any one of claims 1 to 16; a user terminal capable of communicating with the evaluation device; Equipped with the evaluation device is a server device capable of communicating with the user terminal, The user terminal an input unit for inputting the component information received by the receiving unit; a display unit that displays the information output from the output unit; A rating system having:

18. A user terminal capable of communicating with an evaluation device that calculates an environmental load evaluation value that represents an environmental load related to a life cycle of a building, an input unit; A display unit; Equipped with The evaluation device a receiving unit that receives component information related to components that constitute the building; a calculation unit that calculates the environmental load evaluation value based on the component information; an output unit that outputs the environmental load evaluation value; and The calculation unit Calculating, based on the component information, at least one of a first emission amount of a first greenhouse gas emitted due to the building from its construction to its disposal and a second emission amount of a second greenhouse gas emitted due to its operation; and calculating the environmental load evaluation value based on the calculated at least one of the emissions; the input unit is a unit for inputting the component information to be received by the receiving unit, The display unit is a user terminal that displays information output from the evaluation device.

19. Accepts information about components that make up a building, calculating, based on the component information, at least one of a first emission amount of a first greenhouse gas emitted due to the building from its construction to its disposal and a second emission amount of a second greenhouse gas emitted due to the operation of the building; calculating an environmental load evaluation value that represents an environmental load related to the life cycle of the building based on the calculated at least one of the emissions; and outputting the environmental load evaluation value.

20. An evaluation program that causes a computer to execute the evaluation method according to claim 19.

Images