Life-cycle evaluation device, life-cycle evaluation method, and life-cycle evaluation program

Abstract

To perform life-cycle evaluation of building design under a plurality of future scenarios while considering future weather change.SOLUTION: A life-cycle evaluation device 10 includes: a first acquisition unit 101 which acquires information regarding a weather of a region containing the site, and not-deign related information containing a conversion factor, performance or efficiency of a member, equipment, and facility; a second acquisition unit 102 which acquires not-deign related future information being future information of not-deign related information under a plurality of future scenarios; a third acquisition unit 103 which acquires building design information containing information regarding construction, facility, structure, and usage at design of the building, and information regarding future deterioration or updating of the construction, facility, structure, and usage; a calculation unit 104 which calculates a primary energy consumption, an amount of CO2 emission, and costs by using the not-deign related information, not-deign related future information, and the building design information; and an output unit 105 which outputs calculation results being calculated for respective future scenarios.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a life cycle assessment apparatus, a life cycle assessment method, and a life cycle assessment program. [Background technology]

[0002] As the international movement toward decarbonization accelerates, the construction industry is placing emphasis on reducing CO2 emissions during building operation. Therefore, it is important to predict and evaluate CO2 emissions throughout the life cycle of a building from the start to the end of operation at the building design stage.

[0003] According to a report by the Intergovernmental Panel Climate Change (IPCC), the man-made global average temperature is expected to rise by 1.6 to 2.4 degrees Celsius between 2041 and 2060. In the building sector, weather changes will have a significant impact on air conditioning loads, natural energy use, waste heat utilization, renewable energy utilization, and rainwater-related facilities.

[0004] Furthermore, life cycle assessments generally cover primary energy consumption, CO2 emissions, and costs. These conversion factors vary depending on the regional power source mix and materials used, and it is clear that future changes in these will affect life cycle assessments. In addition, the thermal performance of building materials is related to the insulation of buildings and changes the air conditioning load, and the energy efficiency of equipment and facilities changes energy demand. For these reasons, life cycle assessments must take into account future changes in weather, legal requirements, and performance and efficiency.

[0005] For example, Patent Document 1 discloses an analysis system that determines the cost and timing of repairs and renewals of buildings based on analysis data. Patent Document 2 discloses a design support method that determines the life cycle cost of a building based on a unit price database from the design values ​​of the building. Patent Document 3 discloses an assessment system that performs an environmental impact assessment using numerical values ​​obtained by multiplying each physical quantity of environmental load by a weighting coefficient. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 10-046832 [Patent Document 2] JP 2003-141178 A [Patent Document 3] JP 2004-265178 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, the technologies described in Patent Documents 1 and 2 are methods for optimizing the life cycle cost of a building, and are not aimed at reducing CO2 emissions. Also, the technology described in Patent Document 3 is aimed at the life cycle environmental load of a building, but does not take future weather changes into consideration.

[0008] The present invention aims to perform a life cycle assessment of building designs under multiple future scenarios taking into account future weather changes. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, the life cycle assessment apparatus of the present invention includes a first acquisition unit that acquires design-related external information, which is external information related to the design of a building, the design-related external information including information on the weather of a region including a site, a conversion factor, and at least one of performance or efficiency of a component, equipment, and facility; a second acquisition unit that acquires design-related external future information, which is future information of the design-related external information under a plurality of future scenarios; a third acquisition unit that acquires building design information including information on at least one of architecture, equipment, structure, and use at the time of design of the building, and information on future deterioration or renewal of at least one of the architecture, equipment, structure, and use; a calculation unit that calculates at least one of primary energy consumption, CO2 emissions, and cost in the life cycle of the building using the design-related external information, the design-related external future information, and the building design information; and an output unit that outputs the calculation results for each future scenario. Effect of the Invention

[0010] According to the present invention, it is possible to obtain an effect that a life cycle assessment of a building design can be performed under a plurality of future scenarios taking into account future weather changes. [Brief description of the drawings]

[0011] [Figure 1] 1 is a block diagram showing an example of a hardware configuration of a life cycle assessment apparatus according to an embodiment. [Diagram 2] 1 is a block diagram showing an example of a functional configuration of a life cycle assessment apparatus according to an embodiment; [Diagram 3] FIG. 1 is a diagram for explaining a life cycle assessment method according to an embodiment. [Figure 4] 1 is a flowchart showing an example of a processing flow of a life cycle assessment program according to an embodiment. [Diagram 5] 1 is a graph showing an example of secular changes in maximum temperature, annual average temperature, and minimum temperature in each future scenario. [Figure 6]FIG. 1 is a diagram illustrating an example of a calculation model for a medium-sized office. [Figure 7] FIG. 13 is a diagram showing an example of usage information of a medium-sized office. [Figure 8] 1 is a graph showing an example of an annual air-conditioning heat load and a rate of change in each emission scenario. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an example of a mode for implementing the technology of the present disclosure will be described in detail with reference to the drawings. Note that components and processes that perform the same operation, action, and function may be given the same reference numerals throughout all the drawings, and duplicated descriptions may be omitted as appropriate. Each drawing is merely shown in a schematic manner to allow a sufficient understanding of the technology of the present disclosure. Therefore, the technology of the present disclosure is not limited to only the illustrated examples. In addition, in this embodiment, descriptions of configurations that are not directly related to the technology of the present disclosure or well-known configurations may be omitted.

[0013] 1 is a block diagram showing an example of a hardware configuration of a life cycle assessment apparatus 10 according to this embodiment. A general-purpose computer device such as a personal computer (PC) or a server computer is applied to the life cycle assessment apparatus 10 according to this embodiment.

[0014] 1, the life cycle assessment device 10 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a storage 14, an input unit 15, a monitor 16, and a communication interface (I / F) 17. Each component is connected to each other via a bus 18 so as to be able to communicate with each other.

[0015] The CPU 11 is a central processing unit, and executes various programs and controls each part. That is, the CPU 11 reads a program from the ROM 12 or the storage 14, and executes the program using the RAM 13 as a working area. The CPU 11 controls each of the above components and performs various arithmetic processing according to the program stored in the ROM 12 or the storage 14. In this embodiment, a life cycle assessment program is stored in the ROM 12 or the storage 14.

[0016] The ROM 12 stores various programs and various data. The RAM 13 temporarily stores programs or data as a working area. The storage 14 is configured with an HDD (Hard Disk Drive) or an SSD (Solid State Drive) and stores various programs including an operating system and various data.

[0017] The input unit 15 includes a pointing device such as a mouse, and a keyboard, and is used to perform various inputs to the device itself.

[0018] The monitor 16 is, for example, a liquid crystal display, and displays various information. The monitor 16 may function as the input unit 15 by adopting a touch panel system.

[0019] The communication interface 17 is an interface for communicating with other external devices, and uses standards such as Ethernet (registered trademark), FDDI (Fiber Distributed Data Interface), and Wi-Fi (registered trademark).

[0020] Next, the functional configuration of the life cycle assessment apparatus 10 will be described with reference to FIG.

[0021] FIG. 2 is a block diagram showing an example of a functional configuration of the life cycle assessment apparatus 10 according to the present embodiment.

[0022] 2, the life cycle assessment apparatus 10 includes, as functional components, a first acquisition unit 101, a second acquisition unit 102, a third acquisition unit 103, a calculation unit 104, and an output unit 105. Each functional component is realized by the CPU 11 reading out a life cycle assessment program stored in the ROM 12 or the storage 14, expanding it in the RAM 13, and executing it.

[0023] The first acquisition unit 101 acquires design-related external information, which is external information related to the design of a building. The design-related external information includes information about the weather in the area including the site, a conversion factor, and at least one performance or efficiency of the components, the devices, and the facilities. Hereinafter, the information about the weather in the area including the site is referred to as "weather information," and the performance or efficiency of at least one of the components, the devices, and the facilities is referred to as "performance efficiency."

[0024] The second acquisition unit 102 acquires design-related external future information, which is future information on design-related external information under a plurality of future scenarios. Hereinafter, the future information on meteorological information will be referred to as "future meteorological information", the future information on the conversion factor will be referred to as "future conversion factor", and the future information on the performance efficiency will be referred to as "future performance efficiency".

[0025] The third acquisition unit 103 acquires building design information. The building design information includes information on at least one of architecture, equipment, structure, and use at the time of designing the building, and information on future deterioration or renewal of at least one of the architecture, equipment, structure, and use. Hereinafter, the information on architecture, equipment, structure, and use will be referred to as "architecture information", "equipment information", "structure information", and "use information", respectively. Also, the information on future deterioration or renewal of architecture, equipment, structure, and use will be referred to as "renewal plan".

[0026] The calculation unit 104 calculates at least one of the primary energy consumption, CO2 emissions, and costs in the life cycle of the building, using the design-related external information, design-related future external information, and building design information acquired above.

[0027] The output unit 105 outputs the calculation results calculated by the calculation unit 104 for each future scenario. The output unit 105 outputs the calculation results calculated by the calculation unit 104 to the monitor 16, for example, for display.

[0028] The life cycle assessment apparatus 10 according to this embodiment calculates the primary energy consumption, CO2 emissions, and costs in the life cycle of a building for a plurality of future scenarios using design-related external information, design-related external future information, and building design information, and outputs the primary energy consumption, CO2 emissions, and costs for each future scenario. This makes it possible to evaluate the energy performance, environmental performance, and cost performance of a building at the design stage and to consider the design contents.

[0029] Next, the life cycle assessment method according to this embodiment will be specifically described with reference to FIG.

[0030] FIG. 3 is a diagram for explaining the life cycle assessment method according to the present embodiment.

[0031] First, in (S1) of FIG. 3, design-related external information is acquired. The weather information is acquired, for example, from an external weather information database. In this weather information database, for example, the standard year EA weather data XXXX version (for example, 2010 version) of the extended AMeDAS weather data is stored. The weather information includes, for example, at least one of temperature, wind speed, relative humidity, precipitation, total solar radiation, downward longwave solar radiation, and observation point. The conversion coefficient is acquired, for example, from an external conversion coefficient database by region. The conversion coefficient includes, for example, at least one of a primary energy conversion coefficient, a CO2 conversion coefficient, an inflation rate, a coefficient based on an exchange rate, a coefficient based on an electricity rate, and a coefficient based on a gas rate. The performance efficiency includes, for example, at least one of the thermal performance of the component and the energy efficiency of the equipment or facility. The thermal performance of the component is acquired, for example, from an external performance database by component and item. The energy efficiency of the equipment or facility is acquired, for example, from an external efficiency database by item.

[0032] In (S2) of FIG. 3, design-related external future information is acquired. The future weather information is acquired from a future weather information database. This future weather information database stores weather information for each of a plurality of future scenarios. The plurality of future scenarios are, for example, a low emission scenario, a medium emission scenario, and a high emission scenario that are predetermined. The low emission scenario is a scenario in which the CO2 concentration in the atmosphere in the future is the lowest. The medium emission scenario is a scenario in which the CO2 concentration is higher than the low emission scenario. The high emission scenario is a scenario in which the CO2 concentration is higher than the medium emission scenario. In other words, the future weather information is weather information by region and time (the elements are the same as those of the standard year EA weather data) for each of the low emission scenario, the medium emission scenario, and the high emission scenario in a predetermined period (for example, in 10-year units from 2030 to 2100). In addition, the design-related external future information includes, for example, at least one of a prediction of future legal requirements, a prediction of future conversion factors, and a prediction of future changes in the performance of equipment or facilities. These expected legal requirements, expected conversion factors, and expected changes in performance are determined based on, for example, the building designer's assumptions.

[0033] In (S3) of FIG. 3, building design information is acquired. The building design information is determined by consultation between the building designer and the building owner and by the local law including the site. The building information includes, for example, specification information on the site, use, number of floors, site area, building area, total floor area, standard floor area, standard floor height, standard floor window area, standard floor number, exterior finish, interior finish, exterior structure, elevator equipment, and mechanical parking equipment. The equipment information includes, for example, specification information on the air conditioning equipment system, sanitary equipment system, and electrical equipment system. The structural information includes, for example, specification information on at least one of the strength, shape, and arrangement of at least one of the columns, beams, floors, and roofs. The usage information includes, for example, user-side information on the user's usage form, usage schedule, and air conditioning setting temperature. The future update plan includes, for example, future building information on at least one of the following: a usage life plan, a deterioration prediction or repair plan for architectural information, a deterioration prediction or repair plan for equipment information, a deterioration prediction or repair plan for structural information, and a change plan for usage information.

[0034] In (S4) of FIG. 3, at least one of the primary energy consumption, CO2 emissions, and costs in the life cycle of the building is calculated using the design-related external information, design-related future external information, and building design information acquired in (S1) to (S3) above. For the calculation, general-purpose calculation software such as Energy Plus (registered trademark), which is a type of energy simulation program, is used. Energy demand per hour is calculated from various information such as building design information, weather information, and performance efficiency, and the product of each energy demand, each energy efficiency, and a conversion factor is calculated. Specifically, the primary energy consumption is calculated, for example, using the following formula (1). However, the integrated value of the primary energy consumption is expressed as E T , the hourly energy demand is J I,T , energy efficiency K I,T , the primary energy conversion coefficient is A I。T Let us assume that.

[0035] E T =Σ I J I,T ×K I,T ×A I。T (1)

[0036] The CO2 emission amount is calculated, for example, by using the following formula (2). T , energy demand J I,T , energy efficiency K I,T , CO2 conversion coefficient is B I。T Let us assume that.

[0037] H T =Σ I J I,T ×K I,T ×B I。T (2)

[0038] The cost is calculated, for example, by using the following formula (3). T , energy demand J I,T , energy efficiency K I,T , Cost-effectiveness I,T , renovation cost is F TLet us assume that.

[0039] S T =Σ I J I,T ×K I,T ×D I,T +F T (3)

[0040] Furthermore, the primary energy consumption during the life cycle (= period of use) is calculated, for example, using the following formula (4). Here, the life cycle primary energy consumption is E LC Let us assume that.

[0041] E LC ={Σ 使用期間 E T ,E T} (4)

[0042] Furthermore, the CO2 emissions during the life cycle (= period of use) are calculated, for example, using the following formula (5). LC Let us assume that.

[0043] H LC ={Σ 使用期間 H T ,H T} (5)

[0044] Furthermore, the cost during the life cycle (= period of use) is calculated, for example, using the following formula (6). Here, the life cycle cost is S LC Let us assume that.

[0045] S LC ={Σ 使用期間 S T ,S T} (6)

[0046] The primary energy consumption, CO2 emissions, and costs over the life cycle of a building include at least one of the fluctuations in the values ​​of primary energy consumption, CO2 emissions, and costs during each specified period (e.g., 10 years) of the building's usage period, and the integrated values ​​of the primary energy consumption, CO2 emissions, and costs for all years of the building's usage period.

[0047] In (S5) of FIG. 3, at least one of the fluctuations in primary energy consumption, CO2 emissions, and costs for each specified period (e.g., 10 years) calculated in (S4) above, and the integrated values ​​of primary energy consumption, CO2 emissions, and costs for the entire building usage period is displayed on the monitor 16.

[0048] Next, the operation of the life cycle assessment apparatus 10 according to this embodiment will be described with reference to FIG.

[0049] FIG. 4 is a flowchart showing an example of a process flow of the life cycle assessment program according to this embodiment.

[0050] The CPU 11 reads out the life cycle assessment program from the ROM 12 or the storage 14 and executes it, thereby executing each step shown in FIG.

[0051] First, in step S101, the CPU 11 acquires design-related external information as described above in (S1) of FIG. 3, for example.

[0052] In step S102, the CPU 11 acquires design-related external future information, as described above in (S2) of FIG. 3, for example.

[0053] In step S103, the CPU 11 acquires building design information, as described above in (S3) of FIG. 3, for example.

[0054] In step S104, the CPU 11 calculates, as an example, the primary energy consumption, CO2 emissions, and costs over the life cycle of the building using the design-related external information, design-related external future information, and building design information acquired in steps S101 to S103, as described in (S4) of Figure 3 above.

[0055] In step S105, as an example, as described in (S5) of FIG. 3 above, the CPU 11 displays on the monitor 16 at least one of the fluctuations in primary energy consumption, CO2 emissions, and costs for each specified period (e.g., 10 years) calculated in step S104, and the integrated values ​​of the primary energy consumption, CO2 emissions, and costs for the entire life cycle of the building, and ends a series of processes by this life cycle assessment program.

[0056] Next, with reference to Figs. 5 to 8, a specific description will be given of a life cycle assessment in which the thermal load is used as a life cycle assessment item, as an example.

[0057] Figure 5 is a graph showing an example of secular changes in maximum temperature, annual average temperature, and minimum temperature in each future scenario. In Figure 5, the vertical axis shows maximum temperature, annual average temperature, and minimum temperature, and the horizontal axis shows the target year.

[0058] "RCP2.6", "RCP4.5", and "RCP8.5" shown in Figure 5 are representative concentration pathway (RCP) scenarios, and are examples of future scenarios. "RCP2.6" is an example of a low emission scenario, "RCP4.5" is an example of a medium emission scenario, and "RCP8.5" is an example of a high emission scenario.

[0059] In Figure 5, the planned site is "City P." Standard year weather data (current weather data) and future weather data up to 2090 for "City P" were obtained. Figure 5 shows future changes in maximum temperature, annual average temperature, and minimum temperature. Temperatures in "City P" will rise over time, and the maximum temperature in particular will rise by about 4.9°C from the present. General values ​​were used for the current conversion coefficients and performance, and it was assumed that these would not change in the future.

[0060] Fig. 6 is a diagram showing an example of a calculation model for a medium-sized office. The numerical values ​​shown in Fig. 6 are merely an example, and the present invention is not limited to these numerical values.

[0061] The calculation model shown in Fig. 6 is assigned values ​​for the use, number of floors, building area, floor height, exterior surface area, exterior performance, and window performance as examples of building information. The building information is, for example, the same as that of a medium-sized office in the Baseline Building of Standard 90.1-2004, which is a standard of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).

[0062] Fig. 7 is a diagram showing an example of usage information of a medium-sized office. The values ​​shown in Fig. 7 are merely examples, and the present invention is not limited to these values. The usage information shown in Fig. 7 is not updated due to deterioration or repairs.

[0063] The usage information shown in Figure 7 is for the case of using Energy Plus, which is an example of a calculation engine. The usage information includes, for example, the calculation period, run-up calculation, operation period, air conditioning operation period, main internal heat generation, internal heat generation schedule, mechanical ventilation, and DOE Climata Zone. DOE Climata Zone is a climate zone defined by DOE (US Department of Energy), which is an area on the earth divided based on commonalities in climate.

[0064] Figure 8 is a graph showing an example of the annual air conditioning heat load and the rate of change in each emission scenario. In Figure 8, the vertical axis shows the heat load [MJ / m 2 ] is shown on the axis, and the target year is shown on the horizontal axis. The values ​​shown in Figure 8 are examples, and the figures are not limited to these. "RCP2.6" shown in Figure 8 is an example of a low emission scenario, "RCP4.5" is an example of a medium emission scenario, and "RCP8.5" is an example of a high emission scenario.

[0065] Using the calculation model (building information) shown in Figure 6 and the usage information shown in Figure 7, the air conditioning heat load [MJ / m 2 ] was calculated.

[0066] Figure 8 shows the changes in air conditioning heat load up to 2090 displayed on monitor 16. The rate of change in air conditioning heat load, that is, the rate of increase in air conditioning heat load, is roughly constant at +0.4 to 6% for "RCP2.6" and "RCP4.5", whereas it increases monotonically by 1 to 3% every 10 years for "RCP8.5". The amount of change in cooling heat load from 2010 to 2090 is +25.8% for "RCP2.6", +41.2% for "RCP4.5", and +77.3% for "RCP8.5". The amount of change in heating heat load is -14.5% for "RCP2.6", -27.3% for "RCP4.5", and -46.6% for "RCP8.5".

[0067] The use of natural ventilation during the heating season is expected to increase due to the rise in temperature from 2050 onwards. Also, in this building, the rate of change in heat load increases relatively rapidly in 2060. It can be seen that the cooling load increases and the heating load decreases, but the increase in cooling load is greater than the decrease in heating load.

[0068] In other words, for this building, the above life cycle assessment suggests that, for example, it would be effective to promote the use of natural ventilation after 2050 and to carry out renovations to improve the building envelope performance in 2060. This would contribute to a reduction in energy consumption.

[0069] As described above, according to this embodiment, it is possible to perform a life cycle assessment of a building design under a plurality of future scenarios, taking into account future weather changes.

[0070] The present invention is not limited to the above-described embodiment, and various modifications and applications are possible without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0071] 10 Life cycle assessment device 11 CPU 12 ROM 13 RAM 14. Storage 15 Input section 16 monitors 17 Communication I / F 18 Bus 101 First acquisition part 102 Second acquisition part 103 Third acquisition part 104 Calculation section 105 Output section

Claims

1. a first acquisition unit that acquires design-related external information, which is external information related to the design of a building, the design-related external information including information on the weather of a region including a site, a conversion factor, and at least one of performance or efficiency of a member, a device, and a facility; a second acquisition unit that acquires design-related external future information, the design-related external information being future information under a plurality of future scenarios; A third acquisition unit that acquires building design information including information on at least one of architecture, equipment, structure, and use at the time of designing the building, and information on future deterioration or renewal of at least one of the architecture, equipment, structure, and use; The design-related external information, the design-related external future information, and the building design information are used to calculate the primary energy consumption, CO ２ A calculation unit that calculates at least one of an emission amount and a cost; an output unit that outputs the calculation results for each future scenario; A life cycle assessment device comprising:

2. The weather-related information includes at least one of temperature, wind speed, relative humidity, precipitation, total solar radiation, downward longwave solar radiation, and an observation point. The life cycle assessment apparatus according to claim 1 .

3. The conversion factor is the primary energy conversion factor, CO ２ at least one of a conversion factor, an inflation rate, a factor based on an exchange rate, a factor based on an electricity price, and a factor based on a gas price; The life cycle assessment apparatus according to claim 1 .

4. The performance or efficiency of at least one of the components, equipment, and facilities includes at least one of the thermal performance of the components and the energy efficiency of the equipment or facilities; The life cycle assessment apparatus according to claim 1 .

5. The plurality of future scenarios are a predetermined low emission scenario, a medium emission scenario, and a high emission scenario, ２ The low emission scenario, which is the scenario with the lowest CO ２ the medium emission scenario, which is a scenario in which the concentration is higher than that of the low emission scenario; and ２ The high emission scenario is a scenario in which the concentration is higher than the medium emission scenario. The life cycle assessment apparatus according to claim 1 .

6. The design-related external future information includes at least one of a forecast of future legal requirements, a forecast of future conversion factors, and a forecast of future changes in performance of the equipment or facility; The life cycle assessment apparatus according to claim 1 .

7. The information about the building includes specification information about the site, use, number of floors, site area, building area, total floor area, standard floor area, standard floor height, standard floor window area, standard floor number, exterior finish, interior finish, exterior structure, elevator equipment, and mechanical parking equipment. The life cycle assessment apparatus according to claim 1 .

8. The information about the equipment includes specification information about air conditioning equipment, sanitary equipment, and electrical equipment. The life cycle assessment apparatus according to claim 1 .

9. The information about the structure includes specification information about at least one of a strength, a shape, and an arrangement of at least one of a column, a beam, a floor, and a roof; The life cycle assessment apparatus according to claim 1 .

10. The information regarding the use includes information regarding the user's usage pattern, usage schedule, and air conditioning setting temperature. The life cycle assessment apparatus according to claim 1 .

11. The information regarding future deterioration or renewal includes future building information regarding at least one of a service life plan, a deterioration prediction or a renovation plan for the information regarding the building, a deterioration prediction or a renovation plan for the information regarding the equipment, a deterioration prediction or a renovation plan for the information regarding the structure, and a change plan for the information regarding the use; The life cycle assessment apparatus according to claim 1 .

12. Primary energy consumption in the life cycle of the building, CO ２ The emissions and costs are calculated based on the primary energy consumption, CO ２ Changes in the values ​​of emissions and costs, and the primary energy consumption, CO ２ including at least one of the emissions and cost estimates; The life cycle assessment apparatus according to claim 1 .

13. The life cycle assessment device Acquire design-related external information, which is external information related to the design of a building, the design-related external information including information on the weather of a region including a site, a conversion factor, and at least one performance or efficiency of a member, an apparatus, or a facility; acquiring design-related external future information, which is future information of the design-related external information under a plurality of future scenarios; Obtaining building design information including information regarding at least one of architecture, equipment, structure, and use at the time of designing the building, and information regarding future deterioration or renewal of at least one of the architecture, equipment, structure, and use; Calculating at least one of a primary energy consumption, a CO2 emission, and a cost in a life cycle of the building using the design-related external information, the design-related external future information, and the building design information; Outputting the calculation results for each future scenario. Life cycle assessment methods.

14. Acquire design-related external information, which is external information related to the design of a building, the design-related external information including information on the weather of a region including a site, a conversion factor, and at least one performance or efficiency of a member, an apparatus, or a facility; acquiring design-related external future information, which is future information of the design-related external information under a plurality of future scenarios; Obtaining building design information including information regarding at least one of architecture, equipment, structure, and use at the time of designing the building, and information regarding future deterioration or renewal of at least one of the architecture, equipment, structure, and use; Calculating at least one of a primary energy consumption, a CO2 emission, and a cost in a life cycle of the building using the design-related external information, the design-related external future information, and the building design information; A process of outputting the calculation results for each future scenario, A computer-implemented life cycle assessment program.

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