Carbon dioxide discharging amount calculating device, carbon dioxide discharging amount calculating method and program

Abstract

To provide a carbon dioxide discharging amount calculating device capable of allowing a user to easily grasp a carbon dioxide discharging amount without a necessity for inputting a quantity per a unit of CO2 discharging source.SOLUTION: A carbon dioxide discharging amount calculating device includes: a breakdown obtaining unit that obtains breakdown data on an architectural structure including information representing a unit of CO2 discharging source and information representing a quantity per a unit of CO2 discharging source; a unit-of-source storing unit that stores the information representing the unit of CO2 discharging source and discharging amount information representing a carbon dioxide discharging amount per a unit quantity for each CO2 discharging source in association with each other; and a CO2 calculating unit that calculates the carbon dioxide discharging amount of the architectural structure using the breakdown data obtained by the breakdown obtaining unit, and the information representing a unit of CO2 discharging source and the discharging amount information both stored by the unit-of-source storing unit.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a carbon dioxide emission calculation device, a carbon dioxide emission calculation method, and a program. [Background technology]

[0002] The Architectural Institute of Japan has published Non-Patent Document 1, which discloses a method for calculating carbon dioxide emissions during construction. In addition, some developers are encouraging the reduction of carbon dioxide emissions by requiring construction companies and other contractors to submit carbon dioxide emission reduction plans. [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] "Building LCA Guidelines Revised Edition", Architectural Institute of Japan, February 2013 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in Non-Patent Document 1, the user must input the quantity of each CO2 emission unit, which can be cumbersome if there are many CO2 emission unit values.

[0005] The present invention has been made in consideration of the above circumstances, and provides a carbon dioxide emission calculation device, a carbon dioxide emission calculation method, and a program that allow users to easily grasp the amount of carbon dioxide emission without having to input the quantity of each CO2 emission unit. [Means for solving the problem]

[0006] The present invention has been made to solve the above-mentioned problems, and one aspect of the present invention is a carbon dioxide emissions calculation device that includes a breakdown acquisition unit that acquires breakdown data for a building, including information indicating a CO2 emission intensity and information indicating a quantity for each of the CO2 emission intensity, a unit memory unit that stores the information indicating the CO2 emission intensity and emissions information indicating the amount of carbon dioxide emissions per unit quantity of the CO2 emission intensity in association with each other, and a CO2 calculation unit that calculates the carbon dioxide emissions of the building using the breakdown data acquired by the breakdown acquisition unit and the information indicating the CO2 emission intensity and the emissions information stored in the unit memory unit.

[0007] Another aspect of the present invention is the carbon dioxide emission calculation device described above, wherein the CO2 emission unit is the CO2 emission unit of folded sheets, long metal roofing, sandwich panels, metal siding, ground improvement work, retaining walls, wooden structural materials, air conditioning equipment, air conditioning piping, ducts, water supply and sewerage piping, lighting fixtures, or substation equipment.

[0008] Another aspect of the present invention is the above-mentioned carbon dioxide emission calculation device, which includes an initial evaluation input unit that accepts input of a CO2 emission unit value of an item that can be evaluated in the early design stage of the building and a quantity of the CO2 emission unit value, and the CO2 calculation unit calculates the carbon dioxide emission calculation device for the building using the quantity of the CO2 emission unit value accepted by the initial evaluation input unit and the emission information that the unit value memory unit stores in correspondence with the CO2 emission unit value accepted by the initial evaluation input unit.

[0009] Another aspect of the present invention is the carbon dioxide emission calculation device described above, wherein the operation of specifying the CO2 emission unit is an operation of specifying from among a plurality of CO2 emission unit values ​​prepared in advance for each item, the items including a retaining wall, and the plurality of CO2 emission unit values ​​prepared in advance for the retaining wall include the depth of the excavation.

[0010] Another aspect of the present invention is the above-mentioned carbon dioxide emission calculation device, which includes an information acquisition unit that acquires information regarding the breakdown of the building, including at least one of initial design evaluation items, BIM (Building Information Modeling) information, purchasing records, and estimate breakdowns, and the breakdown acquisition unit acquires the breakdown data by aggregating the information acquired by the information acquisition unit by CO2 emission unit.

[0011] Another aspect of the present invention is the above-mentioned carbon dioxide emission calculation device, which includes an output unit that displays the contents of the breakdown data acquired by the breakdown acquisition unit on a display unit, and a breakdown correction unit that corrects the breakdown data in response to user input regarding the contents of the breakdown data displayed by the output unit.

[0012] Another aspect of the present invention is the above-mentioned carbon dioxide emission calculation device, which is equipped with an output unit that outputs, in a comparable manner, a first amount of carbon dioxide emission calculated by the CO2 calculation unit using the first breakdown data acquired by the breakdown acquisition unit and a second amount of carbon dioxide emission calculated by the CO2 calculation unit using the second breakdown data acquired by the breakdown acquisition unit.

[0013] Another aspect of the present invention is the above-mentioned carbon dioxide emission calculation device, wherein the output unit outputs the first carbon dioxide emission amount and the second carbon dioxide emission amount in a manner that allows comparison for each component of the building.

[0014] Another aspect of the present invention is a carbon dioxide emissions calculation method having a first step of acquiring breakdown data for a building, including information indicating a CO2 emissions unit and information indicating a quantity for each of the CO2 emissions unit, and a second step of calculating carbon dioxide emissions for the building using the breakdown data acquired in the first step, information indicating the CO2 emissions unit and emissions information indicating the amount of carbon dioxide emissions per unit quantity of the CO2 emissions unit, which are associated and stored in a unit storage unit.

[0015] Another aspect of the present invention is a program for causing a computer to function as a breakdown acquisition unit that acquires breakdown data for a building, including information indicating a CO2 emission unit and information indicating a quantity for each of the CO2 emission unit, a unit memory unit that stores the information indicating the CO2 emission unit and emissions information indicating the amount of carbon dioxide emissions per unit quantity of the CO2 emission unit in association with each other, and a CO2 calculation unit that calculates the carbon dioxide emissions of the building using the breakdown data acquired by the breakdown acquisition unit and the information indicating the CO2 emission unit and the emissions information stored in the unit memory unit. Effect of the Invention

[0016] According to the present invention, a user of the carbon dioxide emission calculation device, the carbon dioxide emission calculation method, and the program can easily grasp the amount of carbon dioxide emission without inputting the quantity of each CO2 emission unit. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a schematic block diagram showing the configuration of a building carbon dioxide emission calculation device 10 according to an embodiment of the present invention. [Diagram 2] 4 is a flowchart illustrating a first operation example of the carbon dioxide emission calculation device 10 in the embodiment. [Diagram 3] 10 is a flowchart illustrating a second operation example of the carbon dioxide emission calculation device 10 in the embodiment. [Figure 4] 1 is a table showing initial design evaluation items in the embodiment. [Diagram 5] 13 is a schematic diagram of an example of a screen displayed by an initial evaluation input unit 11 in the embodiment. FIG. [Figure 6] 11 is a table showing an example of the contents of breakdown data in the embodiment. [Figure 7] 13 is a schematic diagram showing an example (part 1) of an output screen by the output unit 15 in the embodiment. FIG. [Figure 8]13 is a schematic diagram showing a second example of an output screen by the output unit 15 in the embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic block diagram showing the configuration of a carbon dioxide emission calculation device 10 for a building according to an embodiment of the present invention. The carbon dioxide emission calculation device 10 calculates the carbon dioxide emission of a building from information on the details of the building, such as evaluation items at the initial design stage, BIM (Building Information Modeling) information, purchase records, or breakdown data of estimates. In this embodiment, the calculated carbon dioxide emission is Upfront carbon, In-use of Embodied carbon, and Operational carbon of EN15978 (Sustainability of construction works - Assessment of environmental performance of buildings - Calculation method), but may include others. In this embodiment, the operational carbon is evaluated with a predetermined evaluation period, such as 40 years. Embodied carbon and operational carbon may have a trade-off relationship, so the reduction effect of carbon dioxide emission can be grasped by calculating the sum of them. The carbon dioxide emission calculation device 10 may be realized by reading and executing one or more computers.

[0019] The carbon dioxide emission calculation device 10 includes an initial evaluation input unit 11, a breakdown acquisition unit 12, a CO2 calculation unit 13, a basic unit storage unit 14, and an output unit 15. The initial evaluation input unit 11 accepts input of the basic unit (CO2 (carbon dioxide) emission basic unit) of an item that can be evaluated in the early design stage of a building (initial design evaluation item) and the quantity of the basic unit. The initial evaluation input unit 11 may read a file including information indicating the basic unit and the quantity of the basic unit input by a user to a spreadsheet software. The format of the file may be CSV or the file format of the spreadsheet software. The initial evaluation input unit 11 may be any software capable of creating CSV, not limited to a spreadsheet software, and may display a screen that accepts a designation operation of the basic unit and a designation operation of the quantity of the designated basic unit. The initial evaluation input unit 11 may display the display of the screen on the display of the device itself, or may display the display of a device that is communicably connected to the device itself via a network such as an intranet or the Internet.

[0020] Here, the "basic unit" in this embodiment refers to raw materials, work items, etc. that identify carbon dioxide emission basic units (carbon dioxide emission amount per unit amount of raw materials such as building materials or work items). Note that the basic unit indicated by the information included in the file read by the initial evaluation input unit 11, or the basic unit that can be specified on the screen displayed by the initial evaluation input unit 11, may be only the basic unit of an item that has a certain or higher dominance rate in the total carbon dioxide emission and can reduce carbon dioxide emission by design innovation. Here, the design innovation may include, for example, changes in the architectural plan, selection of construction method, and selection of materials. In addition, the basic unit is one of a plurality of basic units prepared in advance for each item, and the item includes earth retaining, and the plurality of basic units prepared in advance for earth retaining include the depth of the root cutting, such as earth retaining soil (root cutting 18m) and earth retaining soil (root cutting 6m). Here, for example, earth retaining soil (root cutting 18m) indicates that the root cutting is performed to a depth of 18m and the earth retaining is performed by the soil cement column wall method. The quantity of the basic unit of retaining wall may be in square meters (indicating the area to be excavated). In the early design stage, the depth of excavation is often not estimated in detail, but by including the depth of excavation in the basic unit, users can easily select it.

[0021] The breakdown acquisition unit 12 acquires breakdown data of a building, including information indicating a basic unit and information indicating the quantity of the basic unit. The breakdown data is information on the breakdown of a building, such as evaluation items at the initial design stage, BIM (Building Information Modeling) information, purchase records, or breakdown data of an estimate. The format of the breakdown data may be CSV, a file format of any spreadsheet software, or a file format for an estimate breakdown sheet. The breakdown acquisition unit 12 may acquire the breakdown data by receiving a file including the breakdown data from a device communicably connected to the device via a network such as an intranet or the Internet. The breakdown acquisition unit 12 may acquire the breakdown data by reading a file including the breakdown data from a memory such as a USB memory. In addition, the unit of measurement indicated by the information contained in the breakdown data may be the unit of measurement for folded sheets, long metal roofing, sandwich panels, metal siding, ground improvement work, retaining walls, wooden structural materials, air conditioning equipment, air conditioning piping, ducts, water supply and sewerage piping, lighting fixtures, or substation equipment.

[0022] The breakdown acquisition unit 12 may acquire the breakdown data by automatically processing information acquired from an external source. For example, the carbon dioxide emission calculation device 10 may include an information acquisition unit (not shown) that acquires information about the breakdown of a building, such as evaluation items at the initial design stage, BIM information, purchase records, or breakdown data of estimates. The breakdown acquisition unit 12 may acquire the breakdown data by aggregating the information acquired by the information acquisition unit for each basic unit. In this way, the carbon dioxide emission calculation device 10 automatically performs a sorting process on estimates or purchase records, which not only reduces the effort required for humans to sort manually, but also suppresses fluctuations in the sorting results for each individual that occur when humans make sorting judgments.

[0023] The carbon dioxide emission calculation device 10 may be configured to be able to correct the results of the automatic sorting process as described above in response to user input. For example, the output unit 15 causes the display unit to display the contents of the breakdown data acquired by the breakdown acquisition unit 12. Then, a breakdown correction unit (not shown) included in the carbon dioxide emission calculation device 10 corrects the breakdown data in response to a user input for the contents of the breakdown data displayed by the output unit 15. The corrected breakdown data is used for calculating the carbon dioxide emission amount by the CO2 calculation unit 13, which will be described later.

[0024] The CO2 calculation unit 13 calculates the carbon dioxide emission amount of the building using the quantity of the basic unit accepted by the initial evaluation input unit 11 and the emission information stored in the basic unit storage unit 14 in association with the basic unit, the emission information indicating the carbon dioxide emission amount per unit quantity. The CO2 calculation unit 13 also calculates the carbon dioxide emission amount of the building using the breakdown data acquired by the breakdown acquisition unit 12 and the information indicating the basic unit and the emission information stored in the basic unit storage unit 14. Note that the CO2 calculation unit 13 may calculate the carbon dioxide emission amount of the building using other information related to the breakdown of the building (e.g., BIM information, purchase records) in addition to these pieces of information.

[0025] The unit of consumption storage unit 14 stores information indicating the unit of consumption and emission information indicating the amount of carbon dioxide emission per unit quantity of the unit of consumption in association with each other. The unit of consumption includes the unit of consumption that can be accepted by the initial evaluation input unit 11 and the unit of consumption included in the breakdown data acquired by the breakdown acquisition unit 12. The unit of consumption storage unit 14 may store a plurality of emission information with different contents. For example, it may store emission information corresponding to each of a plurality of calculation standards regarding carbon dioxide emission, or it may store emission information corresponding to each of a plurality of businesses. The unit of consumption storage unit 14 is configured by a hard disk device, a magneto-optical disk device, a non-volatile memory such as a flash memory, a read-only storage medium such as a CR-ROM, a volatile memory such as a RAM (Random Access Memory), or a combination of these.

[0026] The output unit 15 outputs the carbon dioxide emission amount of the building calculated by the CO2 calculation unit 13. The output method may be a screen display or output to a file. The output unit 15 may use different output methods or output formats depending on whether the basic unit and the quantity are input from the initial evaluation input unit 11 or from the breakdown acquisition unit 12.

[0027] 2 is a flowchart explaining a first operation example of the carbon dioxide emission calculation device 10 in this embodiment. The first operation example is an operation example when a basic unit and a quantity are input from the initial evaluation input unit 11. First, the initial evaluation input unit 11 accepts input of a basic unit and a quantity for each of a base plan and an improvement plan for an initial design evaluation item (step Sa1). Next, the CO2 calculation unit 13 performs the processes of steps Sa3 to Sa6 for each of the base plan and improvement plan accepted as input in step Sa1 (steps Sa2, Sa7).

[0028] The CO2 calculation unit 13 performs the process of step Sa4 for each unit of measure of the standard proposal or improvement proposal (steps Sa3 and Sa5). In step Sa4, the CO2 calculation unit 13 multiplies the quantity of the unit of measure by the carbon dioxide emission amount corresponding to the unit of measure, i.e., the carbon dioxide emission amount stored in the unit of measure storage unit 14 together with information indicating the unit of measure. After repeating steps Sa3 to Sa5, in step Sa6, the CO2 calculation unit 13 calculates the total carbon dioxide emission amount of all unit of measure of the standard proposal or improvement proposal (the carbon dioxide emission amount calculated in step Sa4).

[0029] After steps Sa2 to Sa7 are repeated, in step Sa8, the output unit 15 outputs the total amount of carbon dioxide emission in the base plan and the total amount of carbon dioxide emission in the improved plan, which are calculated in step Sa6.

[0030] FIG. 3 is a flowchart for explaining a second operation example of the carbon dioxide emission calculation device 10 in this embodiment. The second operation example is an operation example when breakdown data is input from the breakdown acquisition unit 12. In FIG. 3, parts corresponding to those in FIG. 2 are given the same reference numerals, and their explanations are omitted. First, the breakdown acquisition unit 12 acquires breakdown data including information indicating the respective basic units of the standard plan and the improvement plan and information indicating the quantity of the basic units (step Sb1). Next, the CO2 calculation unit 13 performs the processes of steps Sa3 to Sa6 for each of the standard plan and the improvement plan included in the breakdown data acquired in step Sb1 (steps Sa2 and Sa7). After repeating steps Sa2 to Sa7, in step Sa8, the output unit 15 outputs the total carbon dioxide emission of the standard plan and the total carbon dioxide emission of the improvement plan calculated in step Sa6.

[0031] Fig. 4 is a table showing the initial design evaluation items in this embodiment. As shown in Fig. 4, the initial design evaluation items include three proper items, design, structure, and equipment. The design includes eight medium items, roof, dry exterior wall, wet exterior wall finish, exterior opening, interior floor, interior wall and ceiling base, interior wall and ceiling finish, and interior ceiling finish. The structure includes three medium items, foundation work, underground structure, and aboveground structure. The equipment includes three medium items, air conditioning, sanitation, and electricity.

[0032] Roofs include three subitems: waterproofing, folded plate, and long metal roofing. Dry exterior walls include six subitems: curtain wall, PCa (precast concrete), ECP (extruded cement panel), ALC (autoclaved lightweight aerated concrete), sandwich panel, and metal siding. Wet exterior wall finishes include two subitems: tiling and painting. Exterior openings include two subitems: aluminum sash and SD (Siding). Interior floors include six subitems: OA floor, tile carpet, PVC material (sheet / tile), painted floor, tiling, and flooring.

[0033] The interior wall and ceiling underlayment includes three subitems: GB (Gypsum Board) partition wall, fireproof partition wall, and ALC. The interior wall and ceiling finish includes two subitems: painting and vinyl wallpapering. The interior ceiling finish includes two subitems: rock wool sound absorbing board and system ceiling. The foundation work includes four subitems: retaining wall, root excavation (amount of earth removed from site), piles, and ground improvement. The structure includes four subitems: concrete (structure, CFT, PCa), reinforcing bars, ordinary formwork, and steel frame. Others includes two subitems: vibration isolation and vibration control devices. The air conditioning includes three subitems: air conditioners, piping materials, and ducts. The sanitary equipment includes two subitems: steel pipes and cast iron pipes (piping). The electrical equipment includes two subitems: lighting fixtures and substation equipment.

[0034] The file read by the initial evaluation input unit 11 includes information indicating the basic unit of each of these sub-items or a part of them. In addition, on the screen displayed by the initial evaluation input unit 11, it is possible to specify the basic unit for each of these sub-items.

[0035] Fig. 5 is a schematic diagram of an example display of a spreadsheet software for generating a file to be read by the initial evaluation input unit 11 in this embodiment. Table T1 in Fig. 5 is a table for designating a basic unit and a quantity. Each row of table T1 corresponds to a detailed item of the initial design evaluation item shown in Fig. 4, and the basic unit can be designated by selecting a basic unit name from the list. Also, the quantity can be designated by inputting the improvement proposal quantity in the corresponding field.

[0036] 6 is a table showing an example of the content of the breakdown data in this embodiment. The breakdown data includes an item, a code or a code name of the unit of consumption as information indicating the unit of consumption, and a quantity. The unit of consumption may include items that are not included in the initial design evaluation items.

[0037] Fig. 7 is a schematic diagram showing an example (part 1) of an output screen by the output unit 15 in this embodiment. The output screen G2 in Fig. 7 includes a pie chart C2 showing the ratio (contribution rate) of carbon dioxide emissions of each item to the whole, and a table T2 consisting of the carbon dioxide emissions and contribution rates of each item. This allows the user of the carbon dioxide emission calculation device 10 to easily grasp which item's basic unit or quantity should be changed, or which item's related construction plan should be changed to have the greatest effect on reducing carbon dioxide emissions.

[0038] The information output by the output unit 15 is not limited to the example shown in FIG. 7. FIG. 8 is a schematic diagram showing an example (part 2) of an output screen by the output unit 15 in this embodiment. As in the example of FIG. 8, the output unit 15 may output a first carbon dioxide emission amount calculated by the CO2 calculation unit 13 using the first breakdown data acquired by the breakdown acquisition unit 12 and a second carbon dioxide emission amount calculated by the CO2 calculation unit 13 using the second breakdown data acquired by the breakdown acquisition unit 12 in a comparable manner. The first breakdown data and the second breakdown data may be data acquired from different breakdown information, or one breakdown data may be data in which the other breakdown data is partially changed. Examples of a comparable manner include, but are not limited to, a manner in which the first carbon dioxide emission amount and the second carbon dioxide emission amount are displayed on the same screen, and a manner in which the difference between the first carbon dioxide emission amount and the second carbon dioxide emission amount is displayed. In this way, by presenting carbon dioxide emission amounts according to multiple breakdown data in a comparable manner, the user can select a more desirable configuration according to his / her desires and build a building.

[0039] Furthermore, the output unit 15 may output the first carbon dioxide emission amount and the second carbon dioxide emission amount in a manner that allows comparison for each component of the building (e.g., air conditioning, interior, exterior, etc.). This allows the user to easily understand which component contributes to the difference in carbon dioxide emission amount, and allows the user to select the building configuration more efficiently. The output unit 15 may be configured to simultaneously display or switch between the carbon dioxide emission amount per floor area of ​​the building and the carbon dioxide emission amount of the entire building.

[0040] The present invention may also be embodied as follows. (1) One embodiment is a carbon dioxide emissions calculation device that includes a breakdown acquisition unit that acquires breakdown data of a building, including information indicating a CO2 emissions unit and information indicating a quantity for each of the CO2 emissions unit; a unit memory unit that stores the information indicating the CO2 emissions unit and emissions information indicating the amount of carbon dioxide emissions per unit quantity of the CO2 emissions unit in association with each other; and a CO2 calculation unit that calculates the carbon dioxide emissions of the building using the breakdown data acquired by the breakdown acquisition unit and the information indicating the CO2 emissions unit and the emissions information stored in the unit memory unit.

[0041] This allows the user of the carbon dioxide emission calculation device to easily grasp the amount of carbon dioxide emission without inputting the quantity of each CO2 emission unit.

[0042] (2) Furthermore, another embodiment is the carbon dioxide emission calculation device described in (1), in which the CO2 emission unit is the CO2 emission unit of corrugated metal roofing, long metal roofing, sandwich panels, metal siding, ground improvement work, retaining walls, wooden structural materials, air conditioning equipment, air conditioning piping, ducts, water supply and sewerage piping, lighting fixtures, or substation equipment.

[0043] This allows users of the carbon dioxide emission calculation device to easily grasp the carbon dioxide emissions for corrugated metal roofing, long metal roofing, sandwich panels, metal siding, ground improvement works, retaining walls, wooden structural materials, air conditioning units, air conditioning pipes, ducts, water supply and sewerage pipes, lighting fixtures, and substation equipment.

[0044] (3) In another embodiment, the carbon dioxide emission calculation device according to (1) or (2) includes an initial evaluation input unit that accepts input of a CO2 emission unit value of an item that can be evaluated in the early design stage of the building and a quantity of the CO2 emission unit value, and the CO2 calculation unit calculates the carbon dioxide emission calculation device for the building using the quantity of the CO2 emission unit value accepted by the initial evaluation input unit and the emission information that the unit value storage unit stores in correspondence with the CO2 emission unit value accepted by the initial evaluation input unit.

[0045] This allows a user of the carbon dioxide emission calculation device to grasp a rough estimate of the carbon dioxide emission even at an early design stage.

[0046] (4) Another embodiment is a carbon dioxide emission calculation device described in any one of (1) to (3), wherein the operation of specifying the CO2 emission unit is an operation of specifying from among a plurality of CO2 emission unit values ​​prepared in advance for each item, the items including a retaining wall, and the plurality of CO2 emission unit values ​​prepared in advance for the retaining wall include a root cutting depth.

[0047] This allows users of the carbon dioxide emission calculation device to get a rough estimate of the carbon dioxide emission amount of the earth retaining wall even at the early design stage.

[0048] (5) In another embodiment, the carbon dioxide emission calculation device is as described in any one of (1) to (4), and includes an information acquisition unit that acquires information on the details of the building, including at least one of an initial design evaluation item, BIM (Building Information Modeling) information, a purchasing record, or an estimate breakdown, and the breakdown acquisition unit acquires the breakdown data by aggregating the information acquired by the information acquisition unit by CO2 emission unit.

[0049] This makes it possible to suppress fluctuations in the sorting results for each individual that occur when making sorting decisions.

[0050] (6) Another embodiment is a carbon dioxide emission calculation device as described in (5), comprising an output unit that displays the contents of the breakdown data acquired by the breakdown acquisition unit on a display unit, and a breakdown correction unit that corrects the breakdown data in response to user input regarding the contents of the breakdown data displayed by the output unit.

[0051] This allows the user to change the breakdown data at any time and keep track of the carbon dioxide emission amount after the change.

[0052] (7) In another embodiment, the carbon dioxide emission calculation device is described in any one of (1) to (6), and includes an output unit that outputs, in a comparable manner, a first amount of carbon dioxide emission calculated by the CO2 calculation unit using the first breakdown data acquired by the breakdown acquisition unit and a second amount of carbon dioxide emission calculated by the CO2 calculation unit using the second breakdown data acquired by the breakdown acquisition unit.

[0053] This allows users to compare carbon dioxide emissions based on multiple pieces of breakdown data and select the most desirable configuration that meets their needs when constructing a building.

[0054] (8) Another embodiment is the carbon dioxide emission calculation device described in (7), wherein the output unit outputs the first carbon dioxide emission amount and the second carbon dioxide emission amount in a manner that allows comparison for each component of the building.

[0055] This allows users to easily understand which components contribute to the difference in carbon dioxide emissions, allowing them to select building configurations more efficiently.

[0056] (9) Another embodiment is a carbon dioxide emission calculation method including a first step of acquiring breakdown data for a building, the breakdown data including information indicating a CO2 emission intensity and information indicating a quantity for each of the CO2 emission intensity, and a second step of calculating carbon dioxide emissions for the building using the breakdown data acquired in the first step, information indicating the CO2 emission intensity and emissions information indicating the amount of carbon dioxide emissions per unit quantity of the CO2 emission intensity that are associated and stored in a intensity storage unit.

[0057] This allows a user who has implemented the carbon dioxide emission calculation method to easily grasp the amount of carbon dioxide emission without having to input the quantity of each CO2 emission unit.

[0058] (10) Yet another embodiment is a program for causing a computer to function as a breakdown acquisition unit that acquires breakdown data for a building, including information indicating a CO2 emission intensity and information indicating a quantity for each of the CO2 emission intensity, a unit memory unit that stores the information indicating the CO2 emission intensity and emissions information indicating the amount of carbon dioxide emissions per unit quantity of the CO2 emission intensity in association with each other, and a CO2 calculation unit that calculates the carbon dioxide emissions of the building using the breakdown data acquired by the breakdown acquisition unit and the information indicating the CO2 emission intensity and the emissions information stored in the unit memory unit.

[0059] This allows users of the program to easily grasp the amount of carbon dioxide emissions without having to input the quantities of each CO2 emission unit.

[0060] 1, a program for realizing the functions of the initial evaluation input unit 11, the breakdown acquisition unit 12, the CO2 calculation unit 13, the basic unit storage unit 14, and the output unit 15 may be recorded in a computer-readable recording medium, and the program recorded in the recording medium may be read into a computer system and executed to realize a carbon dioxide emission calculation device. Note that the "computer system" referred to here includes hardware such as an OS and peripheral devices.

[0061] In addition, if a WWW system is used, the "computer system" also includes the homepage providing environment (or display environment). In addition, "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, and storage devices such as hard disks built into computer systems. Furthermore, "computer-readable recording medium" also includes those that dynamically hold a program for a short period of time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, and those that hold a program for a certain period of time, such as volatile memory inside a computer system that serves as a server or client in such cases. Furthermore, the above program may be one that realizes part of the above-mentioned functions, or may be one that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

[0062] Although an embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like that do not deviate from the gist of the present invention are also included. [Explanation of symbols]

[0063] 10 Carbon dioxide emission calculation device 11 Initial evaluation input section 12 Breakdown Acquisition Department 13 CO2 calculation section 14 Basic unit memory section 15 Output section

Claims

1. A breakdown acquisition unit that acquires breakdown data of a building, the breakdown data including information indicating a CO2 emission intensity and information indicating a quantity for each of the CO2 emission intensity; a unit storage unit that stores information indicating the CO2 emission unit and emission amount information indicating the amount of carbon dioxide emission per unit quantity of the CO2 emission unit in association with each other; a CO2 calculation unit that calculates carbon dioxide emissions from the building using the breakdown data acquired by the breakdown acquisition unit, information indicating the CO2 emission intensity and the emission information stored in the intensity storage unit; A carbon dioxide emission calculation device comprising:

2. The carbon dioxide emission calculation device of claim 1, wherein the CO2 emission unit is the CO2 emission unit of folded sheets, long metal roofing, sandwich panels, metal siding, ground improvement work, retaining walls, wooden structural materials, air conditioning equipment, air conditioning piping, ducts, water supply and sewerage piping, lighting fixtures, or substation equipment.

3. An initial evaluation input unit that receives input of a CO2 emission intensity of an item that can be evaluated at an early stage of designing the building and a quantity of the CO2 emission intensity, The CO2 calculation unit calculates the carbon dioxide emission amount of the building using the quantity of the CO2 emission intensity units received by the initial evaluation input unit and the emission amount information stored by the intensity unit storage unit in association with the CO2 emission intensity units received by the initial evaluation input unit. The carbon dioxide emission calculation device according to claim 1 .

4. The CO2 emission intensity is one of a plurality of CO2 emission intensity values ​​prepared in advance for each item, The above items include retaining walls, The plurality of CO2 emission units prepared in advance for the earth retaining wall include a depth of the root cut, The carbon dioxide emission calculation device according to claim 3 .

5. An information acquisition unit that acquires information regarding the details of the building, including at least one of an evaluation item at an early stage of design, BIM (Building Information Modeling) information, a purchase record, or a breakdown of an estimate; The breakdown acquisition unit acquires the breakdown data by aggregating the information acquired by the information acquisition unit for each CO2 emission intensity. The carbon dioxide emission calculation device according to claim 1 .

6. an output unit that displays the content of the breakdown data acquired by the breakdown acquisition unit on a display unit; a breakdown correction unit that corrects the breakdown data in response to a user input regarding the content of the breakdown data displayed by the output unit; The carbon dioxide emission calculation device according to claim 5 .

7. and an output unit that outputs, in a comparable manner, a first amount of carbon dioxide emission calculated by the CO2 calculation unit using the first breakdown data acquired by the breakdown acquisition unit and a second amount of carbon dioxide emission calculated by the CO2 calculation unit using the second breakdown data acquired by the breakdown acquisition unit. The carbon dioxide emission calculation device according to claim 1 .

8. The output unit outputs the first carbon dioxide emission amount and the second carbon dioxide emission amount in a manner that allows comparison for each component of the building. The carbon dioxide emission calculation device according to claim 7.

9. A first step of acquiring data on the breakdown of a building, the data including information on a CO2 emission intensity and information on a quantity of each of the CO2 emission intensity; a second step of calculating the carbon dioxide emission amount of the building using the breakdown data acquired in the first step, information indicating the CO2 emission intensity and emission information indicating the carbon dioxide emission amount per unit quantity of the CO2 emission intensity stored in a corresponding manner in a intensity storage unit; A method for calculating carbon dioxide emissions.

10. Computer, A breakdown acquisition unit that acquires breakdown data of a building, the breakdown data including information indicating a CO2 emission intensity and information indicating a quantity for each of the CO2 emission intensity; a unit storage unit that stores information indicating the CO2 emission unit and emission amount information indicating the amount of carbon dioxide emission per unit quantity of the CO2 emission unit in association with each other; a CO2 calculation unit that calculates the carbon dioxide emission amount of the building using the breakdown data acquired by the breakdown acquisition unit, the information indicating the CO2 emission unit and the emission information stored in the unit storage unit; A program to function as a

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