JP2001256263A - Designing method for construction exterior - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform optimal construction design improved in economicity when designing various buildings such as office building or shop building. SOLUTION: When plural allowable conditions are inputted concerning eight kinds of thermal load elements of a construction crust (step S2), for each of combination of allowable conditions, an initial facility cost and an initial construction exterior cost are calculated (steps S6 and S13). Further, a total initial cost totalizing both the costs is calculated (step S7). An air conditioning facility running cost and a construction exterior running cost are calculated (steps S11 and S14) and a total running cost totalizing both the costs is calculated (step S12). Finally, a total life cycle cost adding the total running costs for set years to the total initial cost is calculated and displayed in the order from the lowest cost to easily watch in the form of list (step S16).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for designing a building envelope (outer wall, roof, etc.) suitable for designing various buildings such as office buildings and store buildings.

[0002]

2. Description of the Related Art Conventionally, when designing such a building,
Considering the purpose (for example, office building, store building, etc.), several plans for the building envelope are selected, and for each plan, the building cost and design concept (for example, design image, energy saving, maintenance, etc.) Is determined in consideration of Then, the heat load elements (building orientation, core arrangement,
The outer wall material and the like are calculated, and an optimal air conditioning system (for example, a central heat source system, an individual air conditioning system, etc.) is determined.

[0003]

However, in this case, as the number of plans to be selected increases, the estimation of the construction cost becomes more troublesome. Therefore, in reality, a small number of plans are selected. Since the building costs fluctuate intricately due to the influence of each heat load element and the exact building costs cannot be known without actually calculating, the plan that does not necessarily minimize the building costs is decided as the final plan In many cases, this was uneconomical.

[0004] In view of such circumstances, the present invention provides a design of a building envelope capable of always minimizing building costs by quantitatively grasping the cost effect of the contents of the plan on equipment design. The aim is to provide a method.

[0005]

The present invention according to claim 1 is a method for designing a building envelope by a computer having an arithmetic processing unit, a display unit, and an input unit, wherein at least one kind of heat of the building envelope is provided. When a plurality of allowable conditions for the load element are input via the input device, the arithmetic processing device calculates the equipment initial cost based on the maximum air-conditioning load for each combination of these allowable conditions, and After calculating the initial costs, respectively, the total initial costs are calculated by summing up the facility initial costs and the building envelope initial costs, and the total initial costs are displayed on the display device in the descending order of the total initial costs. .

By adopting such a configuration, the total initial cost is instantaneously obtained for all combinations of allowable conditions relating to the heat load element of the building envelope, so that it is easily displayed.

According to a second aspect of the present invention, there is provided a method for designing an architectural envelope using a computer having an arithmetic processing unit, a display device, and an input device. When the allowable condition is input via the input device, for each combination of these allowable conditions, the arithmetic processing device calculates the air-conditioning equipment running cost based on the air-conditioning annual load,
After calculating the building envelope running costs, respectively, these air conditioning equipment running costs and the building envelope running costs are summed to calculate the total running costs, respectively, and the total running costs are displayed on the display device in the descending order of their height. Be composed.

[0008] With this configuration, the total running cost is instantaneously obtained for all combinations of allowable conditions relating to the heat load element of the building outer skin, and acts so as to be easily displayed.

According to a third aspect of the present invention, there is provided a method of designing an architectural envelope using a computer having an arithmetic processing unit, a display device, and an input device. When the allowable condition is input via the input device, for each combination of these allowable conditions, the arithmetic processing unit calculates the facility initial cost based on the air-conditioning maximum load, and reduces the building outer initial cost, respectively. After the calculation, the initial cost of the equipment and the initial cost of the building outer skin were summed to calculate the total initial cost, respectively, while the running cost of the air conditioning equipment was calculated based on the annual load of the air conditioning, and the running cost of the building outer skin was calculated. Later, these air conditioning equipment running costs and building envelope The total running cost is calculated by summing the total running costs, and the total running cost is calculated by adding the total running cost for the set number of years to the total initial cost, and the total life cycle cost is calculated in the descending order. It is configured to display on the display device.

With such a configuration, the total life cycle cost is instantaneously obtained for all combinations of allowable conditions relating to the heat load element of the building envelope, so that it is displayed in an easily viewable manner.

[0011] Here, the “high-low order” is a concept including both low-order and high-order.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a flowchart showing an example of a building cost calculation program used when applying an embodiment of a building skin designing method according to the present invention, and FIG. 2 is a drawing showing a building within a range of allowable conditions of a heat load element. It is a figure showing an example of a list which displayed cost.

[0014] The design method of the building envelope includes an arithmetic processing unit (microprocessor, CPU, etc.), a display device (liquid crystal display, CRT display, etc.), an input device (keyboard, mouse, etc.) and a storage device (ROM, ROM, etc.).
Using a computer (not shown) such as a personal computer provided with a hard disk, a magneto-optical disk, etc.), the arithmetic processing unit executes the program based on a building cost calculation program PRG1 shown in FIG. 1 as described below. The storage device of the computer includes a maximum air conditioning load data file for each building envelope, a maximum air conditioning load data file for each application, a data file for initial cost / air conditioning load capacity for each system, an initial cost data file for each building envelope, Air-conditioning annual load data file for each skin, air-conditioning annual equipment load data file for each application, running cost data file for each system / use, maintenance for each building
An updated cost data file is stored in a readable manner.

First, a construction cost calculation program P
In step S1 of RG1, a message prompting input of building data such as the purpose, area, number of floors, and outer wall area of the building is displayed on the display device, and the operator inputs these building data via the input device.

Next, a construction cost calculation program PRG1
Step S2, the eight types of heat load elements (building orientation, core arrangement, outer wall material, outer wall insulation, roof insulation,
A message prompting the user to enter allowable conditions for the glass type, window area ratio, and solar shading is displayed on the display device, and the operator inputs these allowable conditions via the input device.
For example, the building orientation may be either “0 °” or “45 °”, and only “E” and “W” of “N”, “E” and “W” are possible for the core arrangement, and the outer wall material is Only "PC", "ALC" and "decorative steel sheet insulation sandwich panel" among "regular concrete", "PC", "ALC", "curtain wall" and "decorative steel sheet insulation sandwich panel" are possible, and "0mm" for outer wall insulation.
“0m” out of “15mm”, “25mm” and “50mm”
m ”,“ 15 mm ”, and“ 25 mm ”are possible, and the roof insulation is“ 25 mm inward ”and“ 50 mm inward ”.
"Internal 100mm""Outer50mm""Outer 100m
m ", the glass type may be any of" normal glass 8 mm "," heat ray absorbing glass 8 mm "," heat ray reflecting glass 8 mm ", and" pair glass (registered trademark) 8 + 8 mm ", and the window area ratio is" 5% "20%"
Only “35%” and “60%” of “35%” and “60%” are possible.
If either "0" or "BOX 1.0" is acceptable, the user inputs that fact.

When a plurality of allowable conditions are input for each of the eight types of heat load elements, the number of combinations of these allowable conditions becomes a huge number (for example, 28,800) in total.
For one of the combinations, the facility initial cost is calculated in steps S3 to S6 of the construction cost calculation program PRG1. That is, first, in step S3 of the construction cost calculation program PRG1, the maximum air-conditioning load related to the disturbance load is calculated based on the building-skin-specific air-conditioning maximum load data file stored in the storage device, and in step S4 of the construction cost calculation program PRG1. The maximum air-conditioning load related to the internal heat load and the external air load is calculated based on the application-specific air-conditioning maximum load data file stored in the storage device. Next, the construction cost calculation program PR
In step S5 of G1, the total air-conditioning maximum load obtained by adding these two types of air-conditioning maximum loads is calculated, and the air-conditioning system (system and equipment capacity) is determined. The equipment initial cost is calculated based on the stored system-specific initial cost / air-conditioning load capacity data file.

On the other hand, a construction cost calculation program PRG1
In step S13, the building exterior initial cost is calculated based on the building exterior initial cost data file stored in the storage device.

After the facility initial cost and the building envelope initial cost have been calculated for this combination of allowable conditions, the building cost calculation program PR
In step S7 of G1, the total initial cost of the two is calculated.

Further, regarding the combination of the allowable conditions, steps S8 to S1 of the construction cost calculation program PRG1 are performed.
In step 1, the air-conditioning equipment running cost is calculated. That is, first, in step S8 of the building cost calculation program PRG1, the annual air-conditioning load is calculated based on the building exterior air-conditioning annual load data file stored in the storage device, and in step S9 of the building cost calculation program PRG1, the data is stored in the storage device. The total air conditioning equipment annual load is calculated based on the stored use-specific air conditioning annual equipment load data file. Next, step S1 of the construction cost calculation program PRG1
0, and after the annual air-conditioning primary energy consumption is calculated, step S1 of the building cost calculation program PRG1
In step 1, the air-conditioning equipment running cost is calculated based on the system-specific / application-specific running cost data file stored in the storage device.

On the other hand, a construction cost calculation program PRG1
In step S14, the building skin running cost is calculated based on the building skin maintenance / update cost data file stored in the storage device.

After the air-conditioning equipment running cost and the building envelope running cost have been calculated for this combination of allowable conditions, the program enters step S12 of the building cost calculation program PRG1 to calculate the total running cost of the two.

Next, a construction cost calculation program PRG1
Is entered, and it is determined whether or not the calculation of the total initial cost and the total running cost has been completed for all the combinations of the allowable conditions, and until the calculation for all the combinations of the allowable conditions is completed, the building cost calculation program is executed. Steps S3, S13, S8 of PRG1,
Returning to S14, the calculation of the total initial cost and the total running cost is repeatedly executed in the same procedure for each combination of allowable conditions.

When the calculation of the total initial cost and the total running cost is completed for all combinations of allowable conditions, the construction cost calculation program P
In step S16 of RG1, the total life cycle cost is calculated by adding the total running cost for the set number of years to the total initial cost.

Thereafter, as shown in FIG. 2, a list T in which construction costs (total initial cost, total running cost or total life cycle cost) for all combinations of allowable conditions are arranged in ascending order.
It is displayed on the display device in the form of BL. Further, in order to make the list TBL visually easy to understand, these data are visualized and displayed on a display device as a graph (not shown).
Will be displayed as

Finally, a construction cost calculation program PRG
In step S17 of FIG. 1, a message prompting the user to determine the building skin is displayed on the display device, and the worker determines the building skin by referring to the list TBL and the graph. Here, the design method of the building envelope based on the building cost calculation program PRG1 ends.

As described above, when the worker inputs the building data and the allowable conditions for the heat load element of the building skin, the building cost when all the allowable conditions are combined is instantaneously obtained, and the list TBL and the graph form are used. Is displayed as
The operator can easily perform an optimal architectural design in the architectural envelope plan and the facility plan.

In the above-described embodiment, a case has been described in which the allowable conditions are input for the eight types of heat load elements of the building envelope. However, the number of heat load elements is not limited to eight, and one or more types may be used. I do not care.

In the above embodiment, the case where the construction costs are displayed in ascending order is described. However, the construction costs may be displayed in descending order.

[0030]

As described above, according to the first aspect of the present invention, the total initial cost can be instantaneously determined and displayed in an easy-to-view manner for all combinations of allowable conditions relating to the heat load element of the building envelope. Therefore, it is possible to easily perform an optimal architectural design that is excellent in economic efficiency when emphasizing the total initial cost.

According to the second aspect of the present invention,
The total running cost is instantaneously determined and displayed in an easy-to-read manner for all combinations of allowable conditions related to the heat load elements of the building envelope, making it easy to optimally design the most economical building design when emphasizing the total running cost. be able to.

According to the third aspect of the present invention, the total life cycle cost is instantaneously determined and displayed for all combinations of the allowable conditions relating to the heat load element of the building envelope, so that the total life cycle cost is displayed. It is possible to easily perform an optimal architectural design that is economically efficient when cost is important.

[Brief description of the drawings]

FIG. 1 is a flowchart showing an example of a building cost calculation program used when applying an embodiment of a building skin designing method according to the present invention.

FIG. 2 is a diagram showing an example of a list displaying construction costs within a range of allowable conditions of a heat load element.

Claims (3)

[Claims] An architectural envelope design method using a computer having an arithmetic processing unit, a display device, and an input device, wherein a plurality of allowable conditions for one or more types of heat load elements of the architectural envelope are set via the input device. When input, for each combination of these permissible conditions, the arithmetic processing unit:
After calculating the facility initial cost based on the maximum air-conditioning load and calculating the building initial cost, respectively, the total initial cost is calculated by summing up the facility initial cost and the building initial cost, and calculating the total initial cost. A design method of a building envelope, wherein costs are displayed on the display device in the order of the height. 2. A design method of a building envelope by a computer having an arithmetic processing unit, a display device, and an input device, wherein a plurality of allowable conditions for one or more types of heat load elements of the building envelope are set via the input device. When input, for each combination of these permissible conditions, the arithmetic processing unit:
After calculating the air-conditioning equipment running costs based on the annual load of the air-conditioning equipment, and calculating the building exterior running costs, respectively, the air-conditioning equipment running costs and the building exterior running costs are totaled to calculate the total running costs, respectively. A design method for an architectural skin, wherein the total running cost is displayed on the display device in the order of height. 3. A design method of a building envelope by a computer having an arithmetic processing unit, a display device, and an input device, wherein a plurality of allowable conditions for one or more types of heat load elements of the building envelope are set via the input device. When input, for each combination of these permissible conditions, the arithmetic processing unit:
After calculating the equipment initial cost based on the maximum air-conditioning load and calculating the building initial cost, respectively, the equipment initial cost and the building initial cost are totaled to calculate the total initial cost. Air-conditioning equipment running costs based on
After calculating the building envelope running costs, respectively, these air conditioning equipment running costs and the building envelope running costs are summed to calculate a total running cost, and the total initial cost is added to the total running cost for a set number of years to obtain a total. A method of designing a building envelope, wherein life cycle costs are calculated respectively, and the total life cycle costs are displayed on the display device in the order of height.