Building insulation renovation plan generation system, generation method, and program

Abstract

To allow for easily planning thermal insulation renovation.SOLUTION: A system 11 is provided for making a thermal insulation renovation plan for a building. This system 11 includes: a first input unit 20a for inputting a present first thermal insulation performance of an object space to be subjected to thermal insulation renovation; a second input unit 20b for inputting a second thermal insulation performance obtained after thermal insulation renovation of the object space; a calculation unit 20d which calculates a target amount of thermal loss reduction on the basis of difference between the first thermal insulation performance and the second thermal insulation performance; a specification storage unit 19f for storing data regarding a plurality of thermal insulation renovation specifications, costs of the plurality of thermal insulation renovation specifications, and amounts of thermal loss reduction; a selection unit 20e which selects, from in the specification storage unit 19f, at least one thermal insulation renovation specification which achieves the target amount of thermal loss reduction and satisfies a preliminarily determined cost condition; and an output unit 20f which outputs, to a display device 14, the selected thermal insulation renovation specification, a total amount of thermal loss reduction, and a total cost.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] This invention relates to a system for generating building insulation renovation plans, etc. [Background technology]

[0002] In recent years, various insulation renovations have been carried out to improve the insulation performance of all or part of the spaces in existing buildings (see, for example, Patent Document 1 below). [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-166483 [Overview of the project] [Problems that the invention aims to solve]

[0004] Generally, insulation renovations require a renovation plan. This plan involves, for example, provisionally determining the insulation renovation specifications, such as building materials, based on the user's budget, and then evaluating whether the insulation performance after the renovation meets predetermined standards. However, since the provisional determination of insulation renovation specifications and the evaluation of insulation performance are repeated until certain standards are met, generating an insulation renovation plan is a time-consuming process.

[0005] This invention was devised in view of the above-mentioned circumstances, and its main purpose is to provide a system that can easily generate insulation renovation plans. [Means for solving the problem]

[0006] The present invention is a system for generating an insulation renovation plan for a building having one or more spaces, comprising: a first input unit that selects at least one space to be insulated from the spaces of the building and inputs a first insulation performance, which is the current insulation performance of the space; a second input unit that inputs a second insulation performance, which is the target insulation performance of the space after the insulation renovation; a calculation unit that calculates a target heat loss reduction amount, which is the amount of heat loss reduction that the space should achieve through the insulation renovation, based on the difference between the first and second insulation performance; and a predetermined multiple of the building materials that constitute the space, including at least one of the ceiling, exterior wall, floor, and opening. The building insulation renovation plan generation system includes: a specification storage unit that stores data relating to a number of insulation renovation specifications, the cost of each of the multiple insulation renovation specifications, and the amount of heat loss reduction for each of the multiple insulation renovation specifications; a selection unit that selects from the specification storage unit at least one insulation renovation specification that achieves the target amount of heat loss reduction and satisfies predetermined cost conditions; and an output unit that outputs at least one of the selected insulation renovation specifications, the total amount of heat loss reduction obtained by summing the heat loss reduction amounts of the selected insulation renovation specifications, and the total cost of the selected insulation renovation specifications to a display device. [Effects of the Invention]

[0007] By adopting the above configuration, the building insulation renovation plan generation system of the present invention makes it possible to easily generate insulation renovation plans. [Brief explanation of the drawing]

[0008] [Figure 1] This is a cross-sectional view showing the building of this embodiment. [Figure 2] This is a block diagram of the building insulation renovation plan generation system of this embodiment. [Figure 3] This figure shows data related to the specifications for thermal insulation renovations in this embodiment. [Figure 4] This figure shows the data regarding the height of the space in this embodiment. [Figure 5] This is a flowchart showing the processing procedure of the building insulation reform plan generation method according to this embodiment. [Figure 6] This is a flowchart showing the processing procedure of the first insulation performance input step according to this embodiment. [Figure 7] This is a diagram showing the screen for inputting the basic information of the building according to this embodiment. [Figure 8] This is a flowchart showing the processing procedure of the selection step according to this embodiment. [Figure 9] This is data showing the cost and heat loss reduction amount of each insulation reform specification. [Figure 10] This is a diagram showing the screen of the display device according to this embodiment. [Figure 11] This is a flowchart showing an example of the processing procedure of the selection step in another embodiment of the present invention. [Figure 12] This is data showing the cost and the increase in the operating temperature of each insulation reform specification in another embodiment of the present invention.

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present invention will be described based on the drawings. It should be understood that the drawings include exaggerated expressions and expressions different from the actual structural dimensional ratios in order to assist in understanding the content of the invention. Also, throughout each embodiment, the same or common elements are denoted by the same reference numerals, and duplicate explanations are omitted. Furthermore, the specific configurations shown in the embodiments and the drawings are for understanding the content of the present invention, and the present invention is not limited to the specific configurations shown.

[0010] In the building insulation reform plan generation system according to this embodiment (hereinafter, sometimes simply referred to as "generation system"), a building insulation reform plan is generated.

[0011] [Building] FIG. 1 is a cross-sectional view showing the building 1 of the present embodiment. Although the building 1 of the present embodiment is exemplified as a house, it may be a building or the like. Further, the building 1 of the present embodiment is configured as an industrialized house. Note that the building 1 is not necessarily limited to an industrialized house as in the present embodiment.

[0012] The building 1 of the present embodiment has one or more spaces 2. The building 1 of the present embodiment has a plurality of spaces 2, including the space 2A on the first floor, the space 2B on the second floor, and the intermediate space 2C. These spaces 2 are configured (partitioned) by building materials 3 including at least one of, for example, a ceiling 4, an outer wall 5, a floor (first floor) 6, and an opening 7. These building materials 3 are configured as an outer skin 8 that forms the thermal boundary of the building 1.

[0013] As in the present embodiment, the building materials 3 used in industrialized houses are mainly produced in factories based on predetermined specifications. Therefore, for the building 1 of the present embodiment, the heights H1 to H3 (vertical modules) of the spaces 2 and the initial heat insulation specifications of the building materials 3 are predetermined. Further, in the present embodiment, the horizontal dimensions of the spaces 2 and the distance (span) between a pair of columns adjacent in the horizontal direction (not shown) are set (designed) for the building 1 and the building materials 3 based on a predetermined horizontal module (architectural module).

[0014] The heights H1 to H3 (vertical modules) of the spaces and the initial heat insulation specifications of the building materials 3 are set for each specification (product) of the industrialized house. The specifications of the present embodiment include, for example, three products (Product A, Product B, and Product C), but are not limited to such a mode. The building 1 (industrialized house) of the present embodiment is configured as Product A.

[0015] [Building Heat Insulation Reform Plan Generation System (First Embodiment)] FIG. 2 is a block diagram of the building heat insulation reform plan generation system 11 of the present embodiment. The generation system 11 of the present embodiment is used to execute the building heat insulation reform plan generation method described below (hereinafter, sometimes simply referred to as the "generation method").

[0016] The generation system 11 of this embodiment is composed of, for example, a computer 12. Examples of the computer 12 include a desktop computer, a notebook computer, a tablet computer, a smartphone, and a cloud server. In this embodiment, for example, a tablet computer or a notebook computer is used as the computer 12.

[0017] The generation system 11 of this embodiment is configured to include, for example, an input device 13, a display device 14, and a processing unit 15.

[0018] [Input devices and display devices] The input device 13 may include, for example, a touch panel, a keyboard, and a mouse. The display device 14 may include, for example, a display. This display may be a touch panel display integrated with the touch panel of the input device 13.

[0019] [Arithmetic Processing Unit] The arithmetic processing unit 15 of this embodiment is configured to include, for example, an arithmetic unit (CPU) 16 that performs various calculations, a storage unit 17 that stores data, programs, etc., and a working memory 18.

[0020] [Storage] The storage unit 17 is a non-volatile information storage device, such as a magnetic disk, optical disk, or SSD. The storage unit 17 in this embodiment includes a data unit 19 and a program unit 20.

[0021] [Data Section] The data unit 19 is for storing data (information) necessary for analyzing the motion of an object, as well as analysis results. In this embodiment, the data unit 19 includes a basic information storage unit 19a, a first adiabatic performance storage unit 19b, a second adiabatic performance storage unit 19c, a reduction amount storage unit 19d, a selection storage unit 19e, and a specification storage unit 19f. However, the data unit 19 is not limited to this configuration, and some of these may be omitted, or it may include, for example, a storage unit (not shown) capable of storing other data. Details of the data input to these data units 19 will be described later, with the exception of the specification storage unit 19f.

[0022] The specification storage unit 19f stores data related to a predetermined number of insulation renovation specifications for the building material 3 (shown in Figure 1). Figure 3 is a diagram showing the data related to insulation renovation specifications in this embodiment. In Figure 3, the insulation renovation specifications for product A of the multiple specifications for industrialized housing (in this example, products A to C) are shown as representative. In this embodiment, different insulation renovation specifications are set for products A to C, but they may be common to products A to C.

[0023] The specification storage unit 19f (shown in Figure 2) of this embodiment stores data for multiple insulation renovation specifications 21 for each building material 3 (in this example, the ceiling 4, exterior wall 5, floor 6, and opening 7). The data for the multiple insulation renovation specifications 21 includes data for the first insulation renovation specification 21a, data for the second insulation renovation specification 21b, and data for the third insulation renovation specification 21c. Note that the insulation renovation specifications 21 are not limited to these forms, and some of them may be omitted, or other insulation renovation specifications (not shown) may be included.

[0024] The first insulation renovation specification 21a, the second insulation renovation specification 21b, and the third insulation renovation specification 21c differ from each other in the specifications of the insulation material used in each building material 3 (ceiling 4, exterior wall 5, floor 6) and the specifications of the double-glazed glass used in the openings 7. Therefore, the insulation performance after renovation differs for each of the first insulation renovation specification 21a, the second insulation renovation specification 21b, and the third insulation renovation specification 21c.

[0025] The specification storage unit 19f (shown in Figure 2) of this embodiment further stores data on heat loss reduction and cost for each of the multiple insulation renovation specifications 21a to 21c.

[0026] As data relating to the reduction in heat loss in this embodiment, the thermal transmittance (U-value) 23a is shown. Thermal transmittance 23a (W / m 2 ·K) is an index of how easily heat is transferred, and the smaller the value, the higher the thermal insulation performance. In this embodiment, among the multiple thermal insulation renovation specifications 21a to 21c, the thermal transmittance 23a of the first thermal insulation renovation specification 21a is set to be the largest, and the thermal transmittance 23a of the third thermal insulation renovation specification 21c is set to be the smallest. In other words, the thermal insulation performance of the first thermal insulation renovation specification 21a is set to be the lowest, and the thermal insulation performance of the third thermal insulation renovation specification 21c is set to be the highest. When the area of ​​each building material 3 is multiplied by the thermal transmittance 23a of these thermal insulation renovation specifications 21a to 21c, the amount of heat loss reduction (W / K) when the thermal insulation renovation specification 21 is applied to each building material 3 can be determined.

[0027] The cost data for this embodiment is the cost required for insulation renovation per unit area of ​​building material 3 (yen / m²). 2This shows 23b. The cost per unit area 23b in this embodiment includes the cost of materials (including the cost of insulation materials) and construction costs (including labor costs) necessary for the insulation renovation. In this embodiment, for each building material 3, the cost per unit area 23b of the first insulation renovation specification 21a is set to be the lowest, and the cost per unit area 23b of the third insulation renovation specification 21c is set to be the highest. By multiplying the cost per unit area 23b of these insulation renovation specifications 21a to 21c by the area of ​​each building material 3, the cost when the insulation renovation specification 21 is applied to each building material 3 can be determined.

[0028] In this embodiment, the specification storage unit 19f (shown in Figure 2) further stores data regarding the initial insulation specifications 22 for the building materials 3 (in this example, the ceiling 4, exterior wall 5, floor 6, and opening 7). In this embodiment, data regarding the amount of heat loss reduction of the initial insulation specifications 22 and data regarding the cost of the initial insulation specifications are further stored. The data regarding the amount of heat loss reduction includes the thermal transmittance (U-value) 23a of each building material 3 before (currently) insulation renovation. On the other hand, the data regarding cost includes the cost per unit area 23b, which is 0 (yen / m²). 2 ) are set accordingly.

[0029] The specification storage unit 19f (shown in Figure 2) of this embodiment stores data relating to the heights H1 to H3 of space 2. Figure 4 shows the data relating to the heights H1 to H3 of space 2 in this embodiment. In this embodiment, the heights of space 2 shown in Figure 1 are stored as: height H1 of space 2A on the first floor, height H2 of space 2B on the second floor, and height H3 of the space between floors 2C. These heights H1 to H3 are stored for each specification of the industrialized housing (in this example, product A to product C). Note that the data relating to the heights H1 to H3 of space 2 is not limited to this configuration and is set according to the number of floors and specifications of building 1 shown in Figure 1.

[0030] [Programming Department] As shown in Figure 2, the program unit 20 is a program (computer program) necessary for analyzing the motion of an object. The program unit (program) 20 is executed by the calculation unit 16, thereby enabling the computer 12 to function as a specific means.

[0031] The program unit 20 of this embodiment includes a first input unit 20a, a second input unit 20b, a third input unit 20c, a calculation unit 20d, a selection unit 20e, and an output unit 20f. However, the program unit 20 is not limited to this configuration; some of these components may be omitted, or other program units with different functions may be included. Details of the functions of these program units 20 will be described later.

[0032] [Method for generating a building insulation renovation plan (First embodiment)] Next, the generation method of this embodiment will be described. Figure 5 is a flowchart showing the processing steps of the generation method of this embodiment. Each step of the generation method of this embodiment is performed by the generation system (computer 12) shown in Figure 2.

[0033] [Input the current first insulation performance (first insulation performance input process)] In the generation method of this embodiment, first, at least one target space 25 for insulation renovation is selected from the spaces 2 of the building 1 shown in Figure 1, and the first insulation performance, which is the current insulation performance of the target space 25, is input (first insulation performance input step S1). The first insulation performance is not particularly limited as long as it represents the current insulation performance of the target space 25. In this embodiment, the current average heat transfer coefficient (UA value) of the building envelope of the target space 25 is calculated as the first insulation performance.

[0034] In the first thermal insulation performance input step S1 of this embodiment, first, data related to thermal insulation renovation specifications etc. (shown in Figure 3) stored in the specification storage unit 19f shown in Figure 2, and data related to the height of the space 2 (shown in Figure 4) are loaded into the working memory 18. Furthermore, the first input unit 20a and the third input unit 20c included in the program unit 20 are loaded into the working memory 18.

[0035] The first input unit 20a is a program for inputting the first thermal insulation performance, which is the current thermal insulation performance of the target space 25. When this first input unit 20a is executed by the calculation unit 16, the computer 12 can be made to function as a means for inputting the first thermal insulation performance.

[0036] The third input unit 20c is a program for inputting the perimeter length and opening area of ​​the target space 25. By executing this third input unit 20c by the calculation unit 16, the computer 12 can be made to function as a means for inputting the perimeter length and opening area. Figure 6 is a flowchart showing the processing procedure of the first thermal insulation performance input step S1 of this embodiment.

[0037] [Enter data related to the basic information of the building] In the first thermal insulation performance input step S1 of this embodiment, data relating to the basic information of building 1 (shown in Figure 1) is first input (step S11). In this embodiment, the third input unit 20c (shown in Figure 2) enables the input of data relating to the basic information of building 1 (shown in Figure 1) (including the outer perimeter length and opening area of ​​the target space 25). Figure 7 shows the screen 30 for inputting the basic information of building 1 in this embodiment.

[0038] In this embodiment, basic information for building 1 (shown in Figure 1) is input, such as the building location 26, product name 27, number of floors 28, and direction of the entrance 29. The building location 26 includes the prefecture name 26a, the city / town name 26b, and the regional classification 26c. The regional classification 26c in this embodiment divides cities and towns nationwide into multiple regions, with outside air conditions as the evaluation axis. In this embodiment, the regional classification 26c is selected from eight regions (regional classifications 1 to 8) divided according to the energy conservation standards for housing (for example, the 2016 energy conservation standards). The product name 27 is selected from the specifications of industrialized housing (in this example, products A to C). Data related to this basic information is stored in the basic information storage unit 19a (shown in Figure 2).

[0039] [Select the space to be insulated for renovation] Next, in the first thermal insulation performance input step S1 of this embodiment, at least one target space 25 for thermal insulation renovation is selected from the spaces 2 of the building 1 shown in Figure 1 (step S12). In this embodiment, the input of the target space 25 for thermal insulation renovation is made possible by executing the third input unit 20c shown in Figure 2.

[0040] The target space 25 for insulation renovation is appropriately selected from the spaces 2 of building 1 shown in Figure 1. In this embodiment, all spaces 2 of building 1 are selected and entered into the screen 30 shown in Figure 7. The selected target space 25 is stored in the basic information storage unit 19a (shown in Figure 2).

[0041] [Enter the perimeter length and opening area] Next, in the first thermal insulation performance input step S1 of this embodiment, the outer perimeter length and opening area of ​​the target space 25 for thermal insulation renovation shown in Figure 1 are input (step S13). In this embodiment, the input of the outer perimeter length and opening area is made possible by executing the third input unit 20c shown in Figure 2.

[0042] The perimeter length of the target space 25 shown in Figure 1 is entered as appropriate. For example, the perimeter length may be a value obtained by actually measuring the target space 25. As described above, in the building 1 of this embodiment, the distance (span) between a pair of adjacent columns in the horizontal direction (not shown) is determined based on the horizontal module. Therefore, by inputting the number of spans in the target space 25, the perimeter length can be automatically calculated without actually measuring the target space 25.

[0043] In the screen 30 of Figure 7, the number of spans 33 of the target space 25 is entered. In this embodiment, the number of spans 33 is entered as the number of east-west spans 33a and the number of north-south spans 33b. The perimeter length can be calculated by multiplying the sum of these span numbers by the distance per span. In this embodiment, if the target space 25 is all the spaces 2 of building 1, the total number of spans of building 1 is entered separately for east-west and north-south. This allows the total perimeter length of building 1 to be calculated.

[0044] The opening area is entered as appropriate. For example, the opening area may be the measured value of the opening 7 provided in the target space 25 shown in Figure 1. In the case of an industrialized house, such as building 1 in this embodiment, the openings 7 to be installed in building 1 are selected from predetermined types (specifications). Each type has a defined opening area. Therefore, by entering the number 34 of the types of openings 7 provided in the target space 25 on screen 30 in Figure 7, the total opening area (total opening area) obtained by summing the opening areas of each opening 7 provided in the target space 25 can be automatically calculated. In this embodiment, the number 34 of the types of openings 7 is entered as the number of types 34a for the first floor and the number 34b for the second floor, but it is not limited to this configuration, and the number of types for all floors may be entered at once. The outer perimeter length and opening area of ​​the target space 25 are stored in the basic information storage unit 19a (shown in Figure 2).

[0045] [Calculate the surface area of ​​the target space] Next, in the first thermal insulation performance input step S1 of this embodiment, the envelope area of ​​the target space 25 is calculated (step S14). In this embodiment, step S14 is made possible by the execution of the first input unit 20a shown in Figure 2, which enables the calculation of the envelope area.

[0046] The outer surface area can be calculated as appropriate. In this embodiment, the outer surface area is calculated based on the height H of the target space 25 shown in Figure 1, the outer perimeter length, and the opening area. The outer perimeter length and opening area are obtained from data input to the basic information storage unit 19a (shown in Figure 2) in step S13.

[0047] In step S14 of this embodiment, the height H of the target space 25 is obtained from the data relating to the height of the space shown in Figure 4. In the case of an industrialized house of product A, such as building 1 of this embodiment, the data relating to the heights H1 to H3 of the space of product A is identified from the data relating to the heights H1 to H3 of the space shown in Figure 4.

[0048] In this embodiment, when the target space 25 is all the spaces 2 of building 1, the following data regarding the height of the space of product A are obtained: the height of the first floor H1 (2.4m in this example), the height of the second floor H2 (2.4m in this example), and the height between floors H3 (0.2m in this example). Then, by adding these heights H1, H2, and H3 together, the height H of the target space 25 (all the spaces of building 1) shown in Figure 1 is obtained.

[0049] Next, in step S14 of this embodiment, for the space 25 to be insulated, the height H is multiplied by the perimeter length, and the opening area is further reduced. This calculates the area of ​​the exterior wall 5 of the space 25. The areas of the ceiling 4 and floor 6 of the space 25 can be calculated, for example, from the number of east-west spans 33a and the number of north-south spans 33b shown in Figure 7.

[0050] Next, in step S14 of this embodiment, the areas of the ceiling 4, exterior wall 5, and floor 6 of the target space 25 are added together with the opening area of ​​the opening 7. This determines the exterior area of ​​the target space 25 (250 m2 in this example). In the screen 30 shown in Figure 7, the exterior area 40 is displayed as a representative. The exterior area 40 and the areas of the ceiling 4, exterior wall 5, and floor 6 are stored in the basic information storage unit 19a (shown in Figure 2).

[0051] [Calculate the first level of thermal insulation performance] Next, in the first thermal insulation performance input step S1 of this embodiment, the first thermal insulation performance, which is the current thermal insulation performance of the target space 25, is calculated based on the envelope area 40 of the target space 25 (shown in Figure 7) and the initial thermal insulation specifications 22 (shown in Figure 3) (step S15). In this embodiment, step S15 is made possible by the execution of the first input unit 20a shown in Figure 2, which enables the calculation of the first thermal insulation performance.

[0052] As described above, the first thermal insulation performance of this embodiment is calculated by determining the current average heat transfer coefficient (UA value) of the building envelope of the target space 25. The average heat transfer coefficient (UA value) is obtained by dividing the total amount of heat lost by the target space 25 by the area of ​​the building envelope of the target space 25.

[0053] The total amount of heat lost by the target space 25 is obtained as appropriate. In this embodiment, when the target space 25 is composed of building materials 3 including the ceiling 4, exterior wall 5, floor 6, and opening 7, the heat loss from the ceiling 4, the heat loss from the exterior wall 5, the heat loss from the floor 6, and the heat loss from the opening 7 are added together. This allows the total amount of heat lost by the target space 25 to be obtained.

[0054] The amount of heat loss in the ceiling 4 is obtained by multiplying the heat transfer coefficient (U-value) of the ceiling 4 by the area of ​​the ceiling 4. The heat transfer coefficient (U-value) of the ceiling 4 used is the ceiling heat transfer coefficient (U-value) 23a included in the data related to the initial insulation specification 22 shown in Figure 3. The area of ​​the ceiling 4 used is the area of ​​the ceiling 4 that was input into the basic information storage unit 19a (shown in Figure 2) in process S14.

[0055] The amount of heat loss in the exterior wall 5 is obtained by multiplying the thermal transmittance (U-value) of the exterior wall 5 by the area of ​​the exterior wall 5. The thermal transmittance (U-value) of the exterior wall 5 is the thermal transmittance (U-value) 23a of the exterior wall included in the data related to the initial insulation specification 22 shown in Figure 3. The area of ​​the exterior wall 5 is the area of ​​the exterior wall 5 that is input into the basic information storage unit 19a (shown in Figure 2) in process S14.

[0056] The heat loss of floor 6 is obtained by multiplying the thermal transmittance (U-value) of floor 6, the area of ​​floor 6, and a coefficient. For the thermal transmittance (U-value) of floor 6, the floor's thermal transmittance (U-value) 23a included in the data related to the initial insulation specification 22 shown in Figure 3 is used. For the area of ​​floor 6, the area of ​​floor 6 input into the basic information storage unit 19a (shown in Figure 2) in process S14 is used. The coefficient is set as appropriate. In this embodiment, when the thermal transmittance of floor 6 and the area of ​​floor 6 are used to calculate the heat loss of floor 6, a coefficient of 0.7 is used. On the other hand, when the thermal transmittance of the foundation 9 and the area of ​​foundation 9 shown in Figure 1 are used instead of the thermal transmittance of floor 6 and the area of ​​floor 6, a coefficient of 1.0 is used.

[0057] The amount of heat loss through the opening 7 is obtained by multiplying the thermal transmittance (U-value) of the opening 7 by the opening area. The thermal transmittance (U-value) of the opening 7 is the thermal transmittance (U-value) 23a of the opening included in the data related to the initial insulation specification 22 shown in Figure 3. The opening area is the opening area entered into the basic information storage unit 19a (shown in Figure 2) in process S14.

[0058] In step S15 of this embodiment, the total amount of heat lost by the target space 25 is obtained by summing the heat loss from the ceiling 4, the heat loss from the outer wall 5, the heat loss from the floor 6, and the heat loss from the opening 7. This total amount of heat lost by the target space 25 is divided by the envelope area 40 (shown in Figure 7) of the target space 25, which was input into the basic information storage unit 19a (shown in Figure 2) in step S14. This gives the current average heat transfer coefficient of the envelope of the target space 25 (in this example, 1.27 W / m²). 2 The value of (K) is calculated. The current average thermal transmittance (UA value) of the target space 25 is stored as the first thermal insulation performance in the first thermal insulation performance storage unit 19b (shown in Figure 2). The first thermal insulation performance 41 is displayed on screen 30 shown in Figure 7.

[0059] [Enter the second level of insulation performance after the insulation renovation] Next, in the generation method of this embodiment, the second thermal insulation performance, which is the target thermal insulation performance after thermal insulation renovation of the target space 25 shown in Figure 1, is input (step S2).

[0060] In step S2 of this embodiment, the second input unit 20b shown in Figure 2 is loaded into the working memory 18. The second input unit 20b is a program for inputting the second thermal insulation performance. By executing this second input unit 20b by the calculation unit 16, the computer 12 can be made to function as a means for inputting the second thermal insulation performance.

[0061] The second thermal insulation performance is set as appropriate, as long as it is the thermal insulation performance that is desired to be achieved after the thermal insulation renovation of the target space 25. In this embodiment, the second thermal insulation performance is set, for example, by the average heat transfer coefficient (UA value) that the target space 25 should achieve, based on energy conservation standards. If, for example, the 2016 energy conservation standards are applied, the standard value of the average heat transfer coefficient of the building envelope set for each regional classification (regional classifications 1 to 8) is set as the second thermal insulation performance. The relationship between these regional classifications and standard values ​​may be stored in advance in the data unit 19 shown in Figure 2.

[0062] As in this embodiment, if "6" is entered in the regional classification 26c of the screen 30 shown in Figure 7, the second thermal insulation performance (average heat transfer coefficient of the building envelope) will be "0.87 (W / m 2 ·K) is set. In this embodiment, the second thermal insulation performance 42 is displayed on the screen 30 shown in Figure 7. The second thermal insulation performance is stored in the second thermal insulation performance storage unit 19c (shown in Figure 2).

[0063] [Calculate target heat loss reduction] Next, in the generation method of this embodiment, the target heat loss reduction amount, which is the amount of heat loss reduction that the target space 25 should achieve through insulation renovation, is calculated based on the difference between the first insulation performance and the second insulation performance (step S3).

[0064] In step S3 of this embodiment, the first thermal insulation performance 41 (shown in Figure 7) input to the first thermal insulation performance storage unit 19b shown in Figure 2, and the second thermal insulation performance 42 (shown in Figure 7) input to the second thermal insulation performance storage unit 19c, are loaded into the working memory 18. Furthermore, in step S3, the calculation unit 20d included in the program unit 20 is loaded into the working memory 18. The calculation unit 20d is a program for calculating the target heat loss reduction amount. By executing this calculation unit 20d by the arithmetic unit 16, the computer 12 can be made to function as a means for calculating the target heat loss reduction amount.

[0065] The target heat loss reduction is calculated as appropriate. In this embodiment, the first thermal insulation performance 41 shown in Figure 7 is reduced by the second thermal insulation performance 42. That is, for the space 25 to be insulated, the current average thermal transmittance of the building envelope (1.27 (W / m in this example)) is used. 2 ·K)) and the target average heat transfer coefficient of the building envelope to be achieved in the energy conservation standards (in this example, 0.87 (W / m) 2 The difference from the (K) is calculated. This difference in the heat transfer coefficient of the building envelope (in this example, 0.40 (W / m)) is calculated. 2 The target heat loss reduction amount (100 (W / K) in this example) is calculated by multiplying the surface area of ​​the target space 25 (40, 250 m2) by the surface area of ​​the outer shell of the target space 25.

[0066] The target heat loss reduction amount in this embodiment is the amount of heat loss reduction that should be achieved by applying one of the insulation renovation specifications 21a to 21c shown in Figure 3 to at least one building material 3 that constitutes the target space 25 shown in Figure 1. The target heat loss reduction amount is stored in the reduction amount storage unit 19d (shown in Figure 2). The target heat loss reduction amount 46 is displayed on the screen 30 shown in Figure 7.

[0067] [Select insulation renovation specifications (selection process)] Next, in the generation method of this embodiment, at least one insulation renovation specification 21a to 21c is selected from the specification storage unit 19f shown in Figure 2 that achieves the target heat loss reduction amount 46 (shown in Figure 7) and satisfies predetermined cost conditions (selection step S4). The cost conditions are set as appropriate, for example, according to the requests of the homeowner of the insulation renovation. In this embodiment, the cost conditions are set to the condition that minimizes the total cost of the selected insulation renovation specifications 21. In this embodiment, the selection step S4 is started by pressing the button 47 shown in Figure 7, but the embodiment is not limited to this configuration.

[0068] In the selection step S4 of the present embodiment, first, data on a plurality of heat insulation reform specifications 21 input to the specification storage unit 19f shown in FIG. 2 (shown in FIG. 3), and the target heat loss reduction amount 46 input to the reduction amount storage unit 19d (shown in FIG. 7) are read into the working memory 18. Further, the selection unit 20e included in the program unit 20 is read into the working memory 18. The selection unit 20e is a program for selecting a heat insulation reform specification. By the selection unit 20e being executed by the arithmetic unit 16, the computer 12 can be made to function as means for selecting a heat insulation reform specification. FIG. 8 is a flowchart showing the processing procedure of the selection step S4 of the present embodiment.

[0069] [Calculate the cost and heat loss reduction amount of heat insulation reform] In the selection step S4 of the present embodiment, first, for each building material 3 constituting the target space 25 for heat insulation reform shown in FIG. 1, the cost and heat loss reduction amount when each of the plurality of heat insulation reform specifications (in this example, the first heat insulation reform specification 21a to the third heat insulation reform specification 21c) shown in FIG. 3 is applied are calculated (step S41). FIG. 9 is data showing the cost and heat loss reduction amount of each heat insulation reform specification 21a to 21c.

[0070] FIG. 9 shows the area 45 of each building material 3. These areas 45 use the areas (not shown) of the ceiling 4, outer wall 5, floor 6, and opening 7 input to the basic information storage unit 19a (shown in FIG. 2) in step S14. Further, FIG. 9 shows the cost 43a, heat loss reduction amount 43b, 1W / K reduction cost 43c, cost increment value 43d, and heat loss reduction amount increment value 43e when those specifications are applied in the heat insulation reform specification 21 (in this example, the first heat insulation reform specification 21a to the third heat insulation reform specification 21c).

[0071] In FIG. 9, the cost 43a when the first heat insulation reform specification 21a is applied is, for each building material 3, the cost 23b per unit area of the first heat insulation reform specification shown in FIG. 3 (yen / m 2) is obtained by multiplying by the area 45 shown in Figure 9. On the other hand, the heat loss reduction amount 43b when the first insulation renovation specification 21a is applied is obtained for each building material 3 by multiplying the difference between the heat transfer coefficient (U value) 23a of the initial insulation specification 22 shown in Figure 3 and the heat transfer coefficient (U value) 23a of the first insulation renovation specification 21a by the area 45 of the building material 3 shown in Figure 9.

[0072] In Figure 9, the cost increment 43d for the second insulation renovation specification 21b represents the increment from the cost 43a of the first insulation renovation specification 21a. This increment 43d is obtained for each building material 3 by subtracting the cost per unit area of ​​the first insulation renovation specification 21a from the cost per unit area of ​​the second insulation renovation specification 21b shown in Figure 3, and then multiplying this result by the area 45 shown in Figure 9. By adding the cost 43a of the first insulation renovation specification 21a to this increment 43d, the cost when the second insulation renovation specification 21b is applied can be determined.

[0073] In Figure 9, the increment value 43e of the heat loss reduction for the second insulation renovation specification 21b represents the increment value from the heat loss reduction 43b of the first insulation renovation specification 21a. This increment value 43e is obtained by multiplying the difference between the thermal transmittance (U-value) 23a of the first insulation renovation specification 21a and the thermal transmittance (U-value) 23a of the second insulation renovation specification 21b, as shown in Figure 3, by the area 45 shown in Figure 9 for each building material 3. By adding the heat loss reduction 43b of the first insulation renovation specification 21a to this increment value 43e, the heat loss reduction when the second insulation renovation specification 21b is applied can be determined.

[0074] In Figure 9, the cost increment 43d for the third insulation renovation specification 21c represents the increment from the cost of the second insulation renovation specification 21b. This increment 43d is obtained for each building material 3 by subtracting the cost per unit area of ​​the second insulation renovation specification 21b from the cost per unit area of ​​the third insulation renovation specification 21c shown in Figure 3, and multiplying this result by the area 45 shown in Figure 9. The cost when the third insulation renovation specification 21c is applied is determined by adding the cost 43a of the first insulation renovation specification 21a and the cost increment 43d of the second insulation renovation specification 21b to this increment 43d.

[0075] In Figure 9, the increment value 43e of the heat loss reduction for the third insulation renovation specification 21c represents the increment from the heat loss reduction for the second insulation renovation specification 21b. This increment value is obtained by multiplying the difference between the thermal transmittance (U-value) 23a of the second insulation renovation specification 21b shown in Figure 3 and the thermal transmittance (U-value) 23a of the third insulation renovation specification 21c for each building material 3 by the area 45 shown in Figure 9. The heat loss reduction when the third insulation renovation specification 21c is applied is obtained by adding the heat loss reduction amount 43b of the first insulation renovation specification 21a and the increment value 43d of the heat loss reduction amount for the second insulation renovation specification 21b to this increment value 43e.

[0076] In Figure 9, the 1W / K reduction cost 43c represents the cost required per unit heat loss reduction (1W / K). In the first insulation renovation specification 21a, the 1W / K reduction cost 43c is obtained by dividing the cost 43a by the heat loss reduction amount 43b. This 1W / K reduction cost 43c for the first insulation renovation specification 21a represents the increase in cost-effectiveness compared to the initial insulation specification 22.

[0077] In the second insulation renovation specification 21b, the cost increment value 43d is divided by the heat loss reduction increment value 43e to obtain a 1W / K reduction cost of 43c. This 1W / K reduction cost of 43c in the second insulation renovation specification 21b represents the increase in cost-effectiveness compared to the first insulation renovation specification 21a.

[0078] In the third insulation renovation specification 21c, the cost increment value 43d is divided by the heat loss reduction increment value 43e to obtain a 1W / K reduction cost of 43c. This 1W / K reduction cost of 43c in the third insulation renovation specification 21c represents the increase in cost-effectiveness compared to the second insulation renovation specification 21b.

[0079] [Select insulation renovation specifications] Next, in the selection step S4 of this embodiment, at least one insulation renovation specification 21 is selected that achieves the target heat loss reduction amount 46 (shown in Figure 7) and satisfies predetermined cost conditions (step S42). In this embodiment, one of the first insulation renovation specification 21a to the third insulation renovation specification 21c is selected for at least one building material 3 that constitutes the target space 25 for insulation renovation. At this time, the insulation renovation specifications are selected such that the total heat loss reduction amount is 46 or more (100 (W / K) in this example) and the total cost satisfies the cost condition (in this example, the condition for the lowest cost).

[0080] In step S42 of this embodiment, first, among the multiple first insulation renovation specifications 21a of the building materials 3 (ceiling 4, exterior wall 5, floor 6, and opening 7) shown in Figure 9, the first insulation renovation specification 21a that is most cost-effective (i.e., the one with the smallest 1W / K reduction cost 43c) is selected.

[0081] Regarding the 1W / K reduction cost 43c in this embodiment, the first insulation renovation specification 21a for the ceiling 4 costs 20,000 yen, and the first insulation renovation specification 21a for the exterior wall 5 costs 30,000 yen. In addition, the first insulation renovation specification 21a for the floor 6 costs 15,000 yen, and the first insulation renovation specification 21a for the opening 7 costs 8,100 yen. Of these insulation renovation specifications 21, the first insulation renovation specification 21a for the opening 7 has the smallest 1W / K reduction cost 43c. Therefore, the first insulation renovation specification 21a for the opening 7 is selected.

[0082] In the first insulation renovation specification 21a for the selected opening 7, the heat loss reduction 43b is 37.2 W / K, which does not achieve the target heat loss reduction 46 (100 W / K) shown in Figure 7. Therefore, in order to achieve the target heat loss reduction 46, it is possible to either upgrade the first insulation renovation specification 21a for the opening 7 to the second insulation renovation specification 21b, or to newly select the first insulation renovation specification 21a for the building materials 3 other than the opening 7 (ceiling 4, exterior wall 5, and floor 6) along with the first insulation renovation specification 21a for the opening 7.

[0083] Next, in step S42 of this embodiment, as shown in Figure 9, either an upgrade of the insulation renovation specification 21 of the selected building material 3, or a new selection of the first insulation renovation specification 21a for the building material 3 that has not yet been selected, is carried out. In this embodiment, among the second insulation renovation specification 21b for the opening 7 and the first insulation renovation specification 21a for the building materials 3 other than the opening 7 (ceiling 4, exterior wall 5, and floor 6), the insulation renovation specification 21 that is most cost-effective (i.e., the one with the smallest 1W / K reduction cost 43c) is selected.

[0084] In this embodiment, the cost reduction of 1 W / K, 43c, for the second insulation renovation specification 21b for the opening 7 is 0.86 million yen. On the other hand, the first insulation renovation specification 21a for the ceiling 4 is 2.0 million yen, the first insulation renovation specification 21a for the exterior wall 5 is 3.0 million yen, and the first insulation renovation specification 21a for the floor 6 is 1.5 million yen. Of these insulation renovation specifications 21, the cost reduction of 1 W / K, 43c, for the second insulation renovation specification 21b for the opening 7 is the smallest. For this reason, the first insulation renovation specification 21a for the opening 7 is upgraded to the second insulation renovation specification 21b.

[0085] The heat loss reduction for the second insulation renovation specification 21b of opening 7 is obtained by adding the incremental value of the heat loss reduction of the second insulation renovation specification 21b, 43e (23.2 W / K), to the heat loss reduction of the first insulation renovation specification 21a, 43b (37.2 W / K). This heat loss reduction (60.4 W / K) does not meet the target heat loss reduction of 46 (100 W / K) shown in Figure 7. Therefore, it is possible to either upgrade the second insulation renovation specification 21b of opening 7 to the third insulation renovation specification 21c, or to newly select the first insulation renovation specification 21a for building materials 3 other than opening 7 (ceiling 4, exterior wall 5, and floor 6).

[0086] Next, in step S42 of this embodiment, as shown in Figure 9, either an upgrade of the insulation renovation specification 21 of the selected building material 3, or a new selection of the first insulation renovation specification 21a for the building material 3 that has not yet been selected, is carried out. In this embodiment, among the third insulation renovation specification 21c for the opening 7 and the first insulation renovation specification 21a for the building materials 3 other than the opening 7 (ceiling 4, exterior wall 5, and floor 6), the insulation renovation specification that is most cost-effective (i.e., the one with the smallest 1W / K reduction cost 43c) is selected.

[0087] In this embodiment, the cost reduction of 1 W / K, 43c, for the third insulation renovation specification 21c of the opening 7 is 0.86 million yen. On the other hand, the first insulation renovation specification 21a of the ceiling 4 is 2.0 million yen, the first insulation renovation specification 21a of the exterior wall 5 is 3.0 million yen, and the first insulation renovation specification 21a of the floor 6 is 1.5 million yen. Of these insulation renovation specifications 21, the cost reduction of 1 W / K, 43c, for the third insulation renovation specification 21c of the opening 7 is the smallest. For this reason, the second insulation renovation specification 21b of the opening 7 is upgraded to the third insulation renovation specification 21c.

[0088] The heat loss reduction for the third insulation renovation specification 21c of opening 7 is obtained by adding the heat loss reduction of the second insulation renovation specification (60.4 W / K) and the incremental value of the heat loss reduction of the third insulation renovation specification 43e (23.2 W / K). This heat loss reduction (83.6 W / K) does not meet the target heat loss reduction 46 (100 W / K) shown in Figure 7. Furthermore, since the insulation renovation specification 21 applicable to opening 7 is limited to the third insulation renovation specification 21c, an upgrade from the third insulation renovation specification 21c is not possible. For this reason, it is conceivable to newly select the first renovation specification 41a for building materials 3 other than opening 7 (ceiling 4, exterior wall 5, and floor 6).

[0089] Next, in step S42 of this embodiment, the first renovation specification 41a for the ceiling 4, exterior wall 5, or floor 6 is selected in Figure 9. In this embodiment, among the first insulation renovation specifications 21a for the ceiling 4, exterior wall 5, and floor 6, the insulation renovation specification 21 that is most cost-effective (has the smallest 1W / K reduction cost) is selected.

[0090] Regarding the 1W / K reduction cost 43c in this embodiment, the first insulation renovation specification 21a for the ceiling 4 costs 20,000 yen, the first insulation renovation specification 21a for the exterior wall 5 costs 30,000 yen, and the first insulation renovation specification 21a for the floor 6 costs 15,000 yen. Of these insulation renovation specifications, the first insulation renovation specification 21a for the floor 6 has the smallest 1W / K reduction cost. Therefore, the first insulation renovation specification 21a for the floor 6 is newly selected (added).

[0091] As mentioned above, the heat loss reduction from the third insulation renovation specification 21c for opening 7 is 83.6 W / K. The heat loss reduction from the first insulation renovation specification 21a for floor 6 is 12.0 W / K (43b). The total heat loss reduction, calculated by adding these amounts together, is 95.6 W / K, which falls short of the target heat loss reduction of 46 (100 W / K) shown in Figure 7. Therefore, to achieve the target heat loss reduction of 46, it is advisable to either upgrade the first insulation renovation specification 21a for floor 6 to the second insulation renovation specification 21b, or to newly select the first insulation renovation specification 21a for ceiling 4 or exterior wall 5.

[0092] Next, in step S42 of this embodiment, as shown in Figure 9, either an upgrade of the insulation renovation specification 21 of the selected building material 3, or a new selection of the first insulation renovation specification 21a for the building material 3 that has not yet been selected, is carried out. In this embodiment, among the second insulation renovation specification 21b for the floor 6 and the first insulation renovation specification 21a for the ceiling 4 and exterior wall 5, the insulation renovation specification 21 that is most cost-effective (has the smallest 1W / K reduction cost) is selected.

[0093] Regarding the 1W / K reduction cost 43c in this embodiment, the second insulation renovation specification 21b for the floor 6 costs 25,000 yen, the first insulation renovation specification 21a for the ceiling 4 costs 20,000 yen, and the first insulation renovation specification 21a for the exterior wall 5 costs 30,000 yen. Of these insulation renovation specifications, the first insulation renovation specification 21a for the ceiling 4 has the smallest 1W / K reduction cost. Therefore, the first insulation renovation specification 21a for the ceiling 4 is newly selected (added).

[0094] As described above, the heat loss reduction amount for the third insulation renovation specification 21c of the opening 7 is 83.6 W / K, and the heat loss reduction amount 43b for the first insulation renovation specification 21a of the floor 6 is 12.0 W / K. In addition, the heat loss reduction amount 43b for the first insulation renovation specification 21a of the ceiling 4 is 6.0 W / K. The total heat loss reduction amount, which is the sum of these heat loss reduction amounts, is 101.6 W / K, achieving the target heat loss reduction amount (100 W / K) shown in Figure 7. Therefore, in step S42 of this embodiment, the third insulation renovation specification 21c of the opening 7, the first insulation renovation specification 21a of the floor 6, and the first insulation renovation specification 21a of the ceiling 4 are selected as the insulation renovation specifications 21 to be applied to the target space 25 for insulation renovation.

[0095] In this embodiment, among the selectable insulation renovation specifications 21, the insulation renovation specification 21 with the highest cost-effectiveness (i.e., the lowest 1W / K reduction cost 43c) is sequentially selected. This makes it possible to select an insulation renovation specification 21 that can achieve the target heat loss reduction amount 46 (shown in Figure 7) while satisfying the cost condition that the total cost of the selected insulation renovation specifications 21 is the lowest.

[0096] The cost of the third insulation renovation specification 21c for opening 7 is obtained by adding the cost of the first insulation renovation specification 21a for opening 7 (43a, 300,000 yen), the increment value of the second insulation renovation specification 21b (43d, 200,000 yen), and the increment value of the third insulation renovation specification 21c (43d, 200,000 yen) (700,000 yen). The cost of the first insulation renovation specification 21a for floor 6 (43a) is 180,000 yen. The cost of the first insulation renovation specification 21a for ceiling 4 (43a) is 120,000 yen. By adding these costs together, a total cost of 1,000,000 yen is obtained for the selected insulation renovation specification 21.

[0097] In step S42, the selected insulation renovation specifications 21 (in this example, the third insulation renovation specification 21c for the opening 7, the first insulation renovation specification 21a for the floor 6, and the first insulation renovation specification 21a for the ceiling 4) are stored in the selection storage unit 19e shown in Figure 2. Furthermore, the total heat loss reduction (101.6 W / K) and the total cost (1 million yen) are also stored in the selection storage unit 19e (shown in Figure 2).

[0098] [Output selected insulation renovation specifications to the display device] Next, in the generation method of this embodiment, at least one of the selected insulation renovation specifications 21, the total heat loss reduction amount obtained by summing the heat loss reduction amounts of the selected insulation renovation specifications 21, and the total cost of the selected insulation renovation specifications 21 is output to the display device 14 (shown in Figure 2) (step S5).

[0099] In step S5 of this embodiment, the insulation renovation specifications 21 (in this example, the third insulation renovation specification 21c for the opening 7, the first insulation renovation specification 21a for the floor 6, and the first insulation renovation specification 21a for the ceiling 4) input into the selection memory unit 19e shown in Figure 2 are loaded into the working memory 18. Furthermore, the total heat loss reduction amount and the total cost input into the selection memory unit 19e are loaded into the working memory 18.

[0100] Next, in step S5 of this embodiment, the output unit 20f included in the program unit 20 is loaded into the working memory 18. The output unit 20f is a program for outputting at least one of the selected insulation renovation specifications 21, the total heat loss reduction amount, and the total cost to the display device 14. By executing this output unit 20f by the calculation unit 16, the computer 12 can function as a means for outputting the above-mentioned selected insulation renovation specifications 21, etc., to the display device 14. Figure 10 is a diagram showing the screen 30 of the display device 14 of this embodiment.

[0101] The display device 14 of this embodiment outputs the regional classification 26c, product name 27, and exterior area 40 as basic information. The regional classification 26c, product name 27, and exterior area 40 are obtained from the basic information storage unit 19a shown in Figure 2.

[0102] In this embodiment, the display device 14 outputs the insulation specifications 36 (initial insulation specifications 22) and thermal transmittance 37 for each building material 3 before insulation renovation. The insulation specifications 36 are obtained from the data related to the initial insulation specifications 22 shown in Figure 3. In this embodiment, the insulation specifications 36 output for each building material 3 include the specifications of the insulation material corresponding to the initial insulation specifications 22 (e.g., thickness) and the specifications of the double-glazed glass, but the embodiment is not limited to this. The thermal transmittance 37 is obtained from the data related to the amount of heat loss reduction of the initial insulation specifications 22 (thermal transmittance 23a) shown in Figure 3.

[0103] In this embodiment, the display device 14 outputs the insulation specifications 38 (insulation renovation specifications 21) and thermal transmittance 39 after insulation renovation for each building material 3. The insulation specifications 38 (insulation renovation specifications 21) output is the insulation renovation specifications 21 selected in the selection process S4. In this embodiment, the insulation specifications 38 output for each building material 3 includes specifications of the insulation material (e.g., thickness) corresponding to the first insulation renovation specifications 21a to the third insulation renovation specifications 21c, as well as specifications of double-glazed glass.

[0104] For building materials 3 (exterior wall 5 in this example) for which insulation renovation specification 21 is not selected, "No change" is output, for example, but the output is not limited to this form. Also, the heat transfer coefficient 39 is the heat transfer coefficient 23a of the selected insulation renovation specification 21 from the data (heat transfer coefficient 23a) related to the amount of heat loss reduction of the multiple insulation renovation specifications 21a to 21c shown in Figure 3.

[0105] In this embodiment, the specifications of the insulation material (e.g., thickness) and the specifications of the double-glazed windows are output for the insulation specification 36 before insulation renovation and the insulation specification 38 after insulation renovation, making it easier for salespeople to explain to clients the changes in the insulation material specifications due to the insulation renovation. It should be noted that the output is not limited to the specifications of the insulation material; for example, names indicating the grades of the first insulation renovation specification 21a to the third insulation renovation specification 21c may also be output.

[0106] The display device 14 of this embodiment outputs the total heat loss reduction amount 51, the total cost 52, the average heat transfer coefficient of the building envelope before insulation renovation 53, and the average heat transfer coefficient of the building envelope after insulation renovation 54. The average heat transfer coefficient of the building envelope before insulation renovation 53 is the current average heat transfer coefficient of the building envelope (UA value) input to the first insulation performance storage unit 19b shown in Figure 2. The average heat transfer coefficient of the building envelope after insulation renovation 54 is obtained by subtracting the current average heat transfer coefficient of the building envelope 53 by the value obtained by dividing the total heat loss reduction amount 51 by the building envelope area 40. By outputting these values ​​to the display device 14, it becomes easier for salespeople to explain to homeowners the insulation performance that can be improved by the selected insulation renovation specification 21 (insulation renovation plan) (for example, the total heat loss reduction amount 51), the total cost 52 required for insulation renovation, and whether or not the energy saving performance after insulation renovation is sufficient.

[0107] Thus, in the generation method (generation system 11) of this embodiment, at least one insulation renovation specification 21 is selected from the specification storage unit 19f shown in Figure 2 that achieves the target heat loss reduction amount 46 shown in Figure 7 and satisfies predetermined cost conditions. As a result, it is not necessary to repeatedly perform the provisional determination of the insulation renovation specification 21 or the evaluation of the insulation performance after renovation until a certain standard is met, as in the conventional method. Therefore, the generation method (generation system 11) makes it possible to easily generate insulation renovation plans.

[0108] Furthermore, in the generation method (generation system 11) of this embodiment, the insulation renovation specification 21 is selected under the condition that minimizes the total cost 52, making it possible to create the most cost-effective insulation renovation plan.

[0109] Furthermore, in the generation method (generation system 11) of this embodiment, the current first insulation performance 41 (shown in Figure 7) is calculated by inputting the perimeter length (number of spans 33 shown in Figure 7) and opening area (number of types of openings 7 34 shown in Figure 7) for the target space 25 for insulation renovation. In addition, the target heat loss reduction amount 46 (shown in Figure 7) and the total cost 52 (shown in Figure 10) are calculated based on the area (including opening area) 45 of each building material 3 shown in Figure 9 and the predetermined insulation renovation specifications 21. Therefore, it is possible to create an insulation renovation plan without requiring specialized knowledge.

[0110] In step S5 of this embodiment, data (not shown) relating to utility costs after insulation renovation may be further output. In this case, it is preferable that utility costs before and after insulation renovation are output. This makes it easier, for example, for salespeople to explain the cost benefits of insulation renovation to homeowners. Utility costs can be easily calculated, for example, by converting primary energy consumption that can be obtained by known methods.

[0111] [Assess whether the criteria are met] Next, in the generation method of this embodiment, it is determined whether the total cost 52 (shown in Figure 10) of the selected insulation renovation specifications 21 satisfies a predetermined standard (step S6). In step S6 of this embodiment, if the amount of the total cost 52 is less than a predetermined threshold (amount), it is determined that the total cost 52 satisfies the standard. Such a determination may be made by the computer 12 (generation system 11) shown in Figure 2, or by the client, etc. The threshold is determined, for example, according to the client's budget.

[0112] In process S6, if the total cost 52 satisfies the criteria ("Yes" in process S6), the insulation renovation is carried out based on the selected insulation renovation specifications 21 (process S7). In this embodiment, since the insulation renovation specifications 21 are identified by creating the insulation renovation plan, orders to factories and arrangements for construction contractors can be made smoothly.

[0113] On the other hand, if the total cost 52 in process S6 does not meet the criteria ("No" in process S6), for example, the target heat loss reduction amount 46 shown in Figure 7 is changed (process S8), and the selection processes S4 to S6 are performed again. This makes it possible to select an insulation renovation specification 21 (creation of an insulation renovation plan) that achieves the target heat loss reduction amount 46 and satisfies predetermined cost conditions, according to the client's requests.

[0114] [Building Insulation Renovation Plan Generation System and Generation Method (Second Embodiment)] In the generation system (generation method) of the previous embodiment, the cost condition was set to the condition that minimizes the total cost 52 (shown in Figure 10) of the selected insulation renovation specification 21 (minimum cost), but the system is not limited to this configuration. For example, the cost condition may be set to the condition that the total cost 52 is lower than the allowable cost, which is the sum of the minimum cost required to achieve the target heat loss reduction amount 46 shown in Figure 7 and the allowable incremental cost from the minimum cost. This makes it possible to change from the insulation renovation specification selected under the condition that minimizes the total cost 52 to an insulation renovation specification 21 that can further improve insulation performance within the range of the allowable cost (i.e., total cost 52 + incremental cost). Therefore, it becomes possible to generate an insulation renovation plan that can improve comfort.

[0115] The incremental cost can be set as appropriate. For example, the incremental cost can be set according to the client's budget, and could be set at, for example, 200,000 yen.

[0116] [Building Insulation Renovation Plan Generation System and Generation Method (Third Embodiment)] In the selection step S4 of the previous embodiment, an insulation renovation specification 21 was selected that achieved the target heat loss reduction amount 46 (shown in Figure 7) and satisfied the cost condition, but the embodiment is not limited to this. For example, in the selection step S4, an insulation renovation specification 21 may be selected to satisfy other conditions as well. In this embodiment, the insulation renovation specification 21 is selected so as to achieve the target heat loss reduction amount 46, satisfy the cost condition, and maximize the total increase in the working temperature of the space 25 to be insulated.

[0117] [Select insulation renovation specifications (selection process)] Figure 11 is a flowchart showing an example of the processing procedure for selection step S4 in another embodiment of the present invention. In selection step S4 of this embodiment, the increase in operating temperature is calculated for each building material 3 constituting the target space 25 for insulation renovation when one of the multiple insulation renovation specifications 21 (in this example, the first insulation renovation specification 21a to the third insulation renovation specification 21c) is applied (step S43).

[0118] Figure 12 shows data illustrating the cost 43a and the increase in operating temperature 43f for each insulation renovation specification 21 of other embodiments of the present invention. In Figure 12, in addition to the area 45, cost 43a, cost increment 43d, and 1W / K reduction cost 43c of each building material 3 shown in Figure 9, the increase in operating temperature 43f is included.

[0119] The effective temperature is one of the indicators used to evaluate the thermal environment for the human body. A higher effective temperature indicates greater comfort. The effective temperature is obtained using the following formula (1). Working temperature = (indoor temperature + average surface temperature) ÷ 2 … (1)

[0120] In the above equation (1), the operating temperature is obtained by adding the indoor temperature and the average surface temperature and dividing by 2. In this embodiment, the indoor temperature is set to the indoor temperature of the target space 25 for insulation renovation (for example, 20°C). The average surface temperature is set to the average value of the surface temperatures of each building material 3 (ceiling 4, exterior wall 5, floor 6 and opening 7) that make up the target space 25. The average surface temperature is obtained by the following equation (2). Average surface temperature = Σ(Surface temperature of each building material × Exterior surface area) ÷ Total exterior surface area …(2)

[0121] In equation (2) above, first, the surface temperature and the surface area (i.e., the area of ​​each building material 3 shown in Figure 9, 45) are multiplied for each building material 3 (ceiling 4, exterior wall 5, floor 6, and opening 7). Then, these multiplied values ​​are summed up and divided by the total surface area of ​​all building materials (i.e., the surface area shown in Figure 7, 40) to obtain the average surface temperature.

[0122] The surface temperature of each building material 3 (ceiling 4, exterior wall 5, floor 6, and opening 7) is obtained using the following formula (3). Surface temperature = Indoor temperature - (Indoor temperature - Outdoor temperature) × Indoor surface heat transfer resistance × Heat transfer coefficient …(3)

[0123] In equation (3) above, the indoor temperature and outdoor temperature are set as appropriate. In this embodiment, the indoor temperature is set to 20°C and the outdoor temperature is set to 0°C. The thermal transmittance (U-value) used is the data (thermal transmittance (U-value) 23a) related to the amount of heat loss reduction for the multiple insulation renovation specifications 21a to 21c shown in Figure 3. The indoor surface heat transfer resistance is set as appropriate according to the building material 3. In this embodiment, the indoor surface heat transfer resistance is set to the following value. Ceiling: 0.09m 2 ·K / W Exterior wall: 0.11m 2 ·K / W Aperture: 0.11m 2 ·K / W Floor: 0.15m 2 ·K / W

[0124] The above-mentioned indoor surface heat transfer resistance and thermal transmittance 23a are stored in the specification storage unit 19f shown in Figure 2 as data relating to the increase in operating temperature for each of the multiple insulation renovation specifications 21a to 21c.

[0125] In Figure 12, the increase in operating temperature 43f for the first insulation renovation specification 21a represents the increase (increment) in operating temperature from the initial insulation specification 22 (shown in Figure 3) for each building material 3. This increase 43f is obtained for each building material 3 by subtracting the operating temperature of the initial insulation specification 22 from the operating temperature of the first insulation renovation specification 21a.

[0126] In Figure 12, the increase in working temperature 43f for the second insulation renovation specification 21b represents the increase (increment) in working temperature from the first insulation renovation specification 21a for each building material 3. This increase 43f is obtained for each building material 3 by subtracting the working temperature of the first insulation renovation specification 21a from the working temperature of the second insulation renovation specification 21b. By adding the increase in working temperature 43f for the first insulation renovation specification 21a to this increase 43f, the increase in working temperature when the second insulation renovation specification 21b is applied can be determined.

[0127] In Figure 12, the increase in working temperature 43f for the third insulation renovation specification 21c represents the increase in working temperature (incremental value) from the second insulation renovation specification 21b for each building material 3. This increase 43f is obtained for each building material 3 by subtracting the working temperature of the second insulation renovation specification 21b from the working temperature of the third insulation renovation specification 21c. By adding the increase in working temperature 43f for the first insulation renovation specification 21a and the increase in working temperature 43f for the second insulation renovation specification 21b to this increase 43f, the increase in working temperature when the third insulation renovation specification 21c is applied can be determined.

[0128] [Select insulation renovation specifications] Next, in the selection step S4 of this embodiment, at least one insulation renovation specification 21 is selected such that the target heat loss reduction amount 46 shown in Figure 7 is achieved, the predetermined cost conditions are met, and the total value of the rise in operating temperature 43f shown in Figure 12 is maximized (step S44). In step S44 of this embodiment, as in previous embodiments, one of the first insulation renovation specification 21a to the third insulation renovation specification 21c is selected for at least one building material 3 that constitutes the target space 25 for insulation renovation.

[0129] In step S44 of this embodiment, first, as in previous embodiments, the insulation renovation specifications 21 are selected such that the total amount of heat loss reduction is equal to or greater than the target heat loss reduction of 46 (100 (W / K)), and the total cost satisfies the cost condition (the condition for the lowest cost). In this case, the third insulation renovation specification 21c for the opening 7, the first insulation renovation specification 21a for the floor 6, and the first insulation renovation specification 21a for the ceiling 4 are selected, and the total cost (minimum cost) becomes 1 million yen.

[0130] Next, in step S44 of this embodiment, the insulation renovation specification 21 is selected such that the total value of the increase in operating temperature 43f is maximized, under the condition that the total cost is lower than the allowable cost. The allowable cost in this embodiment is set to 1.2 million yen, which is the sum of the minimum cost of 1 million yen and the incremental cost (200,000 yen in this example).

[0131] In this embodiment, the current total cost is 1 million yen. Therefore, under a constraint of 200,000 yen, it is possible to select the first insulation renovation specification 21a for the building material 3 that has not been selected, or to upgrade the insulation renovation specification 21.

[0132] In this embodiment, it is conceivable to select the first insulation renovation specification 21a for the exterior wall 5 to raise the operating temperature by +0.05°C. However, the cost required for this selection (300,000 yen) exceeds the constraint of 200,000 yen, so the first insulation renovation specification 21a for the exterior wall 5 cannot be selected. On the other hand, it is also conceivable to upgrade the ceiling 4 and floor 6 from the first insulation renovation specification to the second insulation renovation specification, but the cost required for these selections also exceeds the constraint. Therefore, in this embodiment, the first insulation renovation specification 21a for the ceiling 4, which was the last to be selected (added), is to be canceled, and then the selection of the first insulation renovation specification 21a for the unselected building material 3, or an upgrade of the insulation renovation specification 21 for the selected building material 3, is to be considered.

[0133] In this embodiment, the cancellation of the first insulation renovation specification 21a for the ceiling 4 results in a total cost of 880,000 yen. Therefore, under the constraint of 320,000 yen, it becomes possible to select a new first insulation renovation specification 21a for building material 3 that has not yet been selected, or to upgrade the insulation renovation specification 21 for building material 3 that has already been selected.

[0134] In this embodiment, either the floor 6 is upgraded from the first insulation renovation specification 21a to the second insulation renovation specification 21b, or a new selection of the first insulation renovation specification 21a for a building material 3 (ceiling 4 or exterior wall 5) that has not yet been selected is carried out. In this embodiment, the increase in operating temperature 43f is "+0.07℃" for the second insulation renovation specification 21b of the floor 6, "+0.02℃" for the first insulation renovation specification 21a of the ceiling 4, and "+0.05℃" for the first insulation renovation specification 21a of the exterior wall 5. Of these insulation renovation specifications 21, the increase in operating temperature 43f for the second insulation renovation specification 21b of the floor 6 is the largest, and the total increase in operating temperature 43f can be made the largest.

[0135] If the second insulation renovation specification 21b for floor 6 is selected, the total increase in operating temperature is +0.53°C. Furthermore, the cost of selecting the second insulation renovation specification 21b for floor 6 is 300,000 yen, which satisfies the aforementioned constraint of 320,000 yen.

[0136] As shown in Figure 9, the heat loss reduction of the second insulation renovation specification 21b for the selected floor 6 is obtained by adding the incremental value 43e (12.0 W / K) of the heat loss reduction of the second insulation renovation specification 21b to the heat loss reduction of the first insulation renovation specification 21a 43b (12.0 W / K). As mentioned above, the heat loss reduction of the third insulation renovation specification 21c for the already selected opening 7 is 83.6 W / K. The total heat loss reduction obtained by summing these heat loss reductions is 107.6 W / K, achieving the target heat loss reduction (100 W / K). Therefore, in the selection step S4 of this embodiment, the first insulation renovation specification 21a for the floor 6 is upgraded to the second insulation renovation specification 21b.

[0137] Thus, in this embodiment, the insulation renovation specification 21 is selected so as to maximize the total value of the increase in operating temperature 43f, making it possible to create an insulation renovation plan that can further enhance comfort. Furthermore, in this embodiment, the insulation renovation specification 21 can be changed to one that can further enhance insulation performance within the allowable cost range, making it possible to create an insulation renovation plan that can further enhance comfort.

[0138] In step S5 of this embodiment, the total value of the rise in operating temperature 43f may be output to the display device 14 shown in Figure 10. This makes it easier for salespeople to explain to clients the comfort improvements that can be achieved through insulation renovations.

[0139] Although particularly preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the illustrated embodiments and can be implemented in various modified forms.

[0140] [Note] The present invention includes the following embodiments.

[0141] [Invention 1] A system for generating insulation renovation plans for buildings having one or more spaces, A first input unit selects at least one space to be insulated from the spaces of the building and inputs a first insulation performance, which is the current insulation performance of the space to be insulated. A second input unit inputs the second thermal insulation performance, which is the target thermal insulation performance after the thermal insulation renovation of the aforementioned target space, A calculation unit that calculates a target heat loss reduction amount, which is the amount of heat loss reduction that the target space should achieve through insulation renovation, based on the difference between the first insulation performance and the second insulation performance, A specification storage unit stores data relating to a predetermined number of insulation renovation specifications, the cost of each of the multiple insulation renovation specifications, and the amount of heat loss reduction for each of the multiple insulation renovation specifications, for building materials including at least one of the ceiling, exterior walls, floor, and openings that constitute the target space. A selection unit selects from the specification storage unit at least one insulation renovation specification that achieves the target heat loss reduction and satisfies predetermined cost conditions, The system includes an output unit that outputs to a display device at least one of the selected insulation renovation specifications, the total heat loss reduction obtained by summing the heat loss reduction amounts of the selected insulation renovation specifications, and the total cost of the selected insulation renovation specifications. A system for generating building insulation renovation plans. [2nd Invention] The building insulation renovation plan generation system according to the present invention 1, wherein the specification storage unit stores the data for the ceiling, the exterior wall, the floor, and the openings. [Invention 3] The building insulation renovation plan generation system according to Invention 1 or 2, wherein the cost condition is the condition that minimizes the total cost. [4th Invention] The building insulation renovation plan generation system according to Invention 1 or 2, wherein the cost condition is that the total cost is lower than the allowable cost obtained by adding the minimum cost required to achieve the target heat loss reduction amount and the allowable incremental cost from the minimum cost. [5th ​​Invention] The specification storage unit further stores data relating to the increase in operating temperature for each of the multiple insulation renovation specifications. The building insulation renovation plan generation system according to any one of invention 1 to 4, wherein the selection unit selects at least one insulation renovation specification from the specification storage unit such that the target heat loss reduction amount is achieved, the cost conditions are met, and the total value of the increase in the operating temperature is maximized. [Invention 6] The aforementioned building is an industrialized house in which the height of the space and the initial insulation specifications of the building materials are predetermined. The system further includes a third input unit for inputting the outer perimeter length and opening area of ​​the target space, The building insulation renovation plan generation system according to any one of invention 1 to 5, wherein the first input unit calculates the first insulation performance based on the exterior surface area that can be determined by the height, perimeter length, and opening area of ​​the target space, and the initial insulation specifications. [7th Invention] The aforementioned output unit further outputs data regarding energy costs after insulation renovation, further comprising the building insulation renovation plan generation system according to any one of invention 1 to 6. [8th Invention] A method for generating an insulation renovation plan for a building having one or more spaces, The process of selecting at least one space to be insulated from the space of the building, and inputting the current insulation performance of the space, which is the first insulation performance, into a computer, The process includes inputting the second thermal insulation performance, which is the target thermal insulation performance after thermal insulation renovation of the target space, into the computer. The aforementioned computer, A step of calculating a target heat loss reduction amount, which is the amount of heat loss reduction that the target space should achieve through insulation renovation, based on the difference between the first insulation performance and the second insulation performance, A step of selecting at least one insulation renovation specification that achieves the target heat loss reduction amount and satisfies predetermined cost conditions from a specification storage unit that stores data on a predetermined number of insulation renovation specifications, the cost of each of the predetermined number of insulation renovation specifications, and the amount of heat loss reduction for each of the predetermined number of insulation renovation specifications, for building materials including at least one of the ceiling, exterior wall, floor, and opening that constitute the target space, The process involves outputting to a display device at least one of the selected insulation renovation specifications, the total heat loss reduction obtained by summing the heat loss reduction amounts of the selected insulation renovation specifications, and the total cost of the selected insulation renovation specifications. Method for generating building insulation renovation plans. [Invention 9] A computer program for generating insulation renovation plans for buildings having one or more spaces, Computers, A means for selecting at least one space to be insulated from the spaces of the building and inputting a first insulation performance, which is the current insulation performance of the space to be insulated, A means for inputting the second insulation performance, which is the target insulation performance after the insulation renovation of the aforementioned target space, A means for calculating a target heat loss reduction amount, which is the amount of heat loss reduction that the target space should achieve through insulation renovation, based on the difference between the first insulation performance and the second insulation performance, A means for selecting at least one insulation renovation specification that achieves the target heat loss reduction amount and satisfies predetermined cost conditions from a specification storage unit that stores data on a predetermined number of insulation renovation specifications, the cost of each of the predetermined number of insulation renovation specifications, and the amount of heat loss reduction for each of the predetermined number of insulation renovation specifications, for building materials including at least one of the ceiling, exterior wall, floor, and opening that constitute the target space, The selected insulation renovation specifications, the total heat loss reduction obtained by summing the heat loss reduction amounts of the selected insulation renovation specifications, and the total cost of the selected insulation renovation specifications are to be used as means for outputting at least one of these to a display device. Computer program. [Explanation of Symbols]

[0142] 11. Building Insulation Renovation Plan Generation System 14 Display device 19f Specification Storage Unit 20a First Input Section 20b Second Input Section 20d calculation section 20e Selection Section 20f output section

Claims

1. A system for generating insulation renovation plans for buildings having one or more spaces, A first input unit selects at least one space to be insulated from the spaces of the building and inputs a first insulation performance, which is the current insulation performance of the space to be insulated. A second input unit inputs the second thermal insulation performance, which is the target thermal insulation performance after the thermal insulation renovation of the aforementioned target space, A calculation unit that calculates a target heat loss reduction amount, which is the amount of heat loss reduction that the target space should achieve through insulation renovation, based on the difference between the first insulation performance and the second insulation performance, A specification storage unit stores data relating to a predetermined number of insulation renovation specifications, the cost of each of the multiple insulation renovation specifications, and the amount of heat loss reduction for each of the multiple insulation renovation specifications, for building materials including at least one of the ceiling, exterior walls, floor, and openings that constitute the target space. A selection unit selects one of the multiple insulation renovation specifications for at least one of the building materials from the specification storage unit so as to achieve the target heat loss reduction and satisfy predetermined cost conditions, The system includes an output unit that outputs to a display device at least one of the selected insulation renovation specifications, the total heat loss reduction obtained by summing the heat loss reduction amounts of the selected insulation renovation specifications, and the total cost of the selected insulation renovation specifications. A system for generating building insulation renovation plans.

2. The building insulation renovation plan generation system according to claim 1, wherein the specification storage unit stores the data for the ceiling, the exterior wall, the floor, and the openings.

3. The building insulation renovation plan generation system according to claim 1 or 2, wherein the cost condition is the condition that minimizes the total cost.

4. The building insulation renovation plan generation system according to claim 1 or 2, wherein the cost condition is that the total cost is lower than the allowable cost obtained by adding the minimum cost required to achieve the target heat loss reduction amount and the allowable incremental cost from the minimum cost.

5. The specification storage unit further stores data relating to the increase in operating temperature for each of the multiple insulation renovation specifications. The building insulation renovation plan generation system according to claim 1 or 2, wherein the selection unit selects one of the plurality of insulation renovation specifications from the specification storage unit for at least one of the building materials such that the target heat loss reduction amount is achieved, the cost condition is met, and the total value of the increase in the operating temperature is maximized.

6. The aforementioned building is an industrialized house in which the height of the space and the initial insulation specifications of the building materials are predetermined. The system further includes a third input unit for inputting the outer perimeter length and opening area of ​​the target space, The building insulation renovation plan generation system according to claim 1 or 2, wherein the first input unit calculates the first insulation performance based on the exterior area, which can be determined by the height, perimeter length, and opening area of ​​the target space, and the initial insulation specifications.

7. The building insulation renovation plan generation system according to claim 1 or 2, wherein the output unit further outputs data relating to energy costs after insulation renovation.

8. A method for generating an insulation renovation plan for a building having one or more spaces, The process of selecting at least one space to be insulated from the space of the building, and inputting the current insulation performance of the space, which is the first insulation performance, into a computer, The process includes inputting the second thermal insulation performance, which is the target thermal insulation performance after thermal insulation renovation of the target space, into the computer. The aforementioned computer, A step of calculating a target heat loss reduction amount, which is the amount of heat loss reduction that the target space should achieve through insulation renovation, based on the difference between the first insulation performance and the second insulation performance, A step of selecting one of the multiple insulation renovation specifications for at least one of the building materials, including the ceiling, exterior wall, floor, and openings that constitute the target space, from a specification storage unit that stores data on a predetermined number of insulation renovation specifications, the cost of each of the multiple insulation renovation specifications, and the amount of heat loss reduction for each of the multiple insulation renovation specifications, in order to achieve the target amount of heat loss reduction and satisfy the predetermined cost conditions. The process involves outputting to a display device at least one of the selected insulation renovation specifications, the total heat loss reduction amount obtained by summing the heat loss reduction amounts of the selected insulation renovation specifications, and the total cost of the selected insulation renovation specifications. Method for generating building insulation renovation plans.

9. A computer program for generating insulation renovation plans for buildings having one or more spaces, Computers, A means for selecting at least one space to be insulated from the space of the building and inputting a first insulation performance, which is the current insulation performance of the space to be insulated, A means for inputting the second insulation performance, which is the target insulation performance after the insulation renovation of the aforementioned target space, A means for calculating a target heat loss reduction amount, which is the amount of heat loss reduction that the target space should achieve through insulation renovation, based on the difference between the first insulation performance and the second insulation performance, A means for selecting one of the multiple insulation renovation specifications for at least one of the building materials, including the ceiling, exterior wall, floor, and openings that constitute the target space, from a specification storage unit that stores data on a predetermined number of insulation renovation specifications, the cost of each of the multiple insulation renovation specifications, and the amount of heat loss reduction for each of the multiple insulation renovation specifications, such that the target amount of heat loss reduction is achieved and predetermined cost conditions are met. The selected insulation renovation specifications, the total heat loss reduction obtained by summing the heat loss reduction amounts of the selected insulation renovation specifications, and the total cost of the selected insulation renovation specifications are to be used as means for outputting at least one of these to a display device. Computer program.

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