Energy consumption performance calculation system

Abstract

To provide an energy consumption performance calculation system that can alleviate a calculation work load of an energy consumption performance of a building.SOLUTION: An energy consumption performance calculation system comprises: a database in which specification information including [specification information] of [standard] and [high performance] is registered; an energy consumption performance calculation unit that calculates an amount of energy consumption of a building, using information including at least one selected from the [standard] one and the [high performance] one; a target value registration unit in which a target value of the amount of energy consumption of the building is registered; a first performance difference calculation unit that calculates a first performance difference indicative of a difference between a calculation value of the amount of energy consumption and the target value; an extraction unit that extracts a facility instrument capable of changing a selection result of the [standard] one and the [high performance ] one so as to reduce the first performance difference on the basis of an amount of energy consumption regarding the [specification information] of [standard] and [high performance] for each of a plurality of facility instruments; and a visualization unit that visualizes information on the facility instrument extracted by the extraction unit.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an energy consumption performance calculation system. [Background technology]

[0002] Conventionally, techniques for calculating the energy consumption performance of a building have been publicly known, as described in Patent Document 1, for example.

[0003] Patent Document 1 describes a system that calculates the energy consumption performance of a building based on input information. The input information includes equipment diagram information, which is information on the equipment in each room of the building. If the calculated value of energy consumption performance does not reach a target value as a result of calculating the energy consumption performance using the system described in Patent Document 1, the user can change the equipment diagram information, for example, to make the equipment in a certain room have high energy consumption performance, thereby bringing the calculated value of energy consumption performance closer to the target value.

[0004] However, in the above system, the user changes the equipment diagram information without knowing which equipment in which room needs to be changed in order to reach the target value for the calculated energy consumption performance. Therefore, it is expected that the user will have to repeatedly change the equipment diagram information until the calculated value for the energy consumption performance reaches the target value. In such a case, the burden of the work required to calculate the energy consumption performance becomes large. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6804019 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in consideration of the above-mentioned situation, and the problem it aims to solve is to provide an energy consumption performance calculation system that can reduce the burden of the work of calculating the energy consumption performance of a building. [Means for solving the problem]

[0007] The problem to be solved by the present invention has been described above, and the means for solving this problem will now be described.

[0008] That is, in claim 1, the system includes: a specification information registration unit in which specification information set for each of a plurality of equipment devices installed in each room of a building, the specification information including first specification information indicating a class of the equipment device with a predetermined energy consumption and second specification information indicating a class of the equipment device with a lower energy consumption than the first specification information; an energy consumption performance calculation unit which calculates the energy consumption of the building using information including at least one selected from the first specification information and the second specification information; a target value registration unit in which a target value of the energy consumption of the building is registered; a first performance difference calculation unit which calculates a first performance difference indicating the difference between the calculated value of the energy consumption by the energy consumption performance calculation unit and the target value; an extraction unit which extracts the equipment devices that are capable of changing the selection result of the first specification information and the second specification information so as to reduce the first performance difference, based on the energy consumption related to the first specification information and the energy consumption related to the second specification information for each of the plurality of equipment devices; and a visualization unit which visualizes information of the equipment devices extracted by the extraction unit.

[0009] In claim 2, the system includes a second performance difference calculation unit that calculates, for each of the plurality of equipment devices, a second performance difference indicating a difference between an energy consumption related to the first specification information and an energy consumption related to the second specification information, and a subtraction unit that subtracts the second performance difference selected from the plurality of second performance differences from the first performance difference so that the first performance difference becomes a predetermined value, and the extraction unit extracts the equipment device corresponding to the second performance difference that is the subject of subtraction by the subtraction unit.

[0010] In claim 3, the subtraction unit selects the second performance differences from the plurality of second performance differences in descending order of value and performs subtraction.

[0011] In claim 4, the present invention further comprises a cost information registration unit in which information indicating a cost set for each piece of specification information of the facility equipment is registered, and the extraction unit extracts the facility equipment having a low cost from among the facility equipment for which a selection result of the first specification information and the second specification information can be changed.

[0012] In claim 5, the system further comprises a specification information changing unit capable of changing a selection result of the first specification information and the second specification information used in the calculation of the energy consumption amount of the building by the energy consumption performance calculation unit in response to an operation by a user. Effect of the Invention

[0013] The present invention has the following advantages.

[0014] In the present invention, the burden of calculating the energy consumption performance of a building can be reduced. [Brief description of the drawings]

[0015] [Figure 1] 1 is a block diagram showing an energy consumption performance calculation system according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram showing a process executed by the energy consumption performance calculation system. [Diagram 3] 10 is a flowchart showing the process of calculating energy consumption performance using the energy consumption performance calculation system. [Figure 4] FIG. 4 is a schematic diagram showing an example of an input sheet. [Diagram 5] 1 is a table showing an example of specification information. [Figure 6] 1 is a table showing an example of a specification selection sheet. [Figure 7]FIG. 2 is a diagram showing a method for extracting equipment in the energy consumption performance calculation system according to the first embodiment. [Figure 8] FIG. 11 is a schematic diagram showing a process executed by the energy consumption performance calculation system according to the second embodiment. [Figure 9] FIG. 13 is a diagram showing a method for extracting equipment in the energy consumption performance calculation system according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] In the following, an energy consumption performance calculation system 1 according to a first embodiment of the present invention will be described. The energy consumption performance calculation system 1 calculates a predicted value of the energy consumption performance of a building.

[0017] In this embodiment, the building for which the energy consumption performance is calculated is assumed to be a non-residential building. Examples of uses of the building include offices and stores (retail stores).

[0018] In this embodiment, the Building Energy Efficiency Index (BEI) is used as an index of energy saving performance calculated by the energy consumption performance calculation system 1. The BEI is calculated by dividing the energy consumption (primary energy consumption) of a target building by a standard energy consumption (standard primary energy consumption). The smaller the BEI value, the higher the energy saving performance of the building.

[0019] Methods for predicting the BEI mentioned above include the "standard input method," which calculates the BEI value using information on all rooms to be evaluated (the use and area of ​​each room, etc.), and the "model building method," which calculates the BEI value by reflecting the specifications of equipment actually installed in a model building that assumes the shape and room use for each building use. With the standard input method, the BEI value is calculated based on the actual information of each room, allowing for a more precise evaluation than the model building method.

[0020] When calculating the BEI value using the standard input method, it is possible to carry out a calculation (such as a simulation) using a calculation program (such as an "energy consumption performance calculation program (non-residential version)") for calculating energy consumption performance in accordance with, for example, the "Act on Improvement of Energy Consumption Performance of Buildings (Building Energy Conservation Act)". The calculation program calculates a predicted value of the BEI based on information about each room in the building (such as information about the purpose, area, and equipment of each room in the building).

[0021] However, to perform calculations using the above-mentioned calculation program using the standard input method, it is necessary to input information for many items (e.g., 180 or more), which is time-consuming. In addition, it is expected that all the information required for calculations using the above-mentioned calculation program using the standard input method will be available only in the final design stage, when the building drawings (floor plans, elevations, etc.) have been created and the insulation performance and specifications of facility equipment have been largely determined. For this reason, it has been difficult to predict the BEI in the early design stages of a building (e.g., the planning stage when only floor plans have been created).

[0022] The energy consumption performance calculation system 1 shown in Fig. 1 can calculate the energy consumption of a building, and therefore its energy consumption performance (predicted value of BEI), using information (drawing information described below) that can be read from a design drawing (e.g., a floor plan or the like) of a building. The energy consumption performance calculation system 1 is composed of a control device 10 that can process various types of information. A general personal computer, server, or the like can be used as the control device 10. The control device 10 includes a memory unit 11, a control unit 12, a communication unit 13, an input unit 14, and a display unit 15.

[0023] The storage unit 11 stores various programs and various acquired information, and is configured with a HDD, a RAM, a ROM, and the like.

[0024] The control unit 12 executes the programs stored in the storage unit 11. The control unit 12 is configured with a CPU.

[0025] The communication unit 13 is capable of communicating with external devices. The communication unit 13 can exchange information with external devices via various communication means such as the Internet. By performing communication using the communication unit 13, it becomes possible to access, for example, a database of an external server.

[0026] The input unit 14 is used to input various information and is composed of a keyboard, a mouse, and the like.

[0027] The display unit 15 displays various information and is configured, for example, by a liquid crystal display.

[0028] The energy consumption performance calculation system 1 (control device 10) configured as described above is managed by, for example, a business entity that designs buildings.

[0029] As shown in FIG. 2, the energy consumption performance calculation system 1 creates calculation information, which is information necessary to calculate the energy consumption performance (predicted value of BEI) using a calculation program of the standard input method, and calculates the energy consumption performance using the calculation program based on the calculation information.

[0030] The energy consumption performance calculation system 1 according to this embodiment creates calculation information by collecting "drawing information," "specification information," and "automatically generated information." Each item of "drawing information," "specification information," and "automatically generated information" will be explained below with reference to Figs. 4 to 6. Fig. 4 is a table (input sheet) showing an example of input for each item of "drawing information." Fig. 5 is a table showing an example of "specification information." Also, Fig. 6 is a table (specification selection sheet) showing the selection results of "specification information" with different grades, which will be described later.

[0031] The "drawing information" shown in Fig. 4 is information that can be read from the architectural design of the building. The drawing information includes information on each room in the building that is to be evaluated for energy consumption performance. The drawing information is input into the energy consumption performance calculation system 1 (control device 10) by the user performing an input operation using the input unit 14. The user can input the drawing information into each item of the input sheet (see Fig. 4) displayed on the display unit 15.

[0032] The drawing information includes the following items: "floor," "room name," "building use," "room use," "room area," "floor height," "ceiling height," "equipment to be calculated," "exterior wall length," and "window type."

[0033] "Floor" is an item in which information indicating the specifications of the floor of the room that is the subject of the calculation is input. In "Floor", the floor number of the room that is the subject of the calculation is input. Note that instead of inputting the floor number, information selected from pre-registered options (for example, the lowest floor, the top floor, the middle floor, and the single-story building) may be input.

[0034] "Room name" is an item where the name of the room to be calculated is input. Any name can be input into "Room name". Examples of "room name" include an office, a conference room, a stairwell, a corridor, an elevator hall, a meeting room, etc.

[0035] "Building use" is an item in which information indicating the use of the building is input. Information selected from pre-registered options is input into "Building use". Examples of "Building use" include offices, hotels, hospitals, stores, schools, restaurants, meeting halls, factories, and apartment buildings.

[0036] "Room use" is an item in which information indicating the use of the room to be calculated is input. Information selected from pre-registered options (e.g., office, conference room, hallway, etc.) is input into "Room use".

[0037] "Room area" is an item in which information indicating the area of ​​the room to be calculated is input. "Room use" is an item in which a numerical value indicating the area of ​​the room is input.

[0038] "Floor height" is an item in which information indicating the floor height of the room to be calculated is input. A numerical value indicating the floor height of the room is input in "Floor height".

[0039] "Ceiling height" is an item in which information indicating the ceiling height of the room to be calculated is input. A numerical value indicating the ceiling height of the room is input in "ceiling height".

[0040] "Equipment to be calculated" is an item where information is entered indicating whether or not there is equipment that is the subject of each calculation (air conditioning calculation, ventilation calculation, lighting calculation, and hot water calculation) for calculating energy consumption performance. "Equipment to be calculated" includes "air conditioning," "ventilation," "lighting," and "hot water supply." When a room is the subject of the above calculations (e.g., air conditioning calculation), the user checks the item that corresponds to the calculation (e.g., "air conditioning")

[0041] "Exterior wall length" is an item in which information indicating the length of the exterior wall according to the orientation (e.g. south, west, north, east) of the room to be calculated is input. As shown in Figure 4, "exterior wall length" includes sub-items for each orientation (e.g. south, west, north, east). When the room to be calculated includes an exterior wall (a wall facing the outside of the building), the user inputs a numerical value indicating the length of the exterior wall in the sub-item that corresponds to the orientation in which the exterior wall faces (e.g. south and west) (see Figure 4).

[0042] "Window type" is an item into which information indicating the specifications of the window in the room that is the subject of the calculation is input. Like "exterior wall length," "window type" includes subitems for each direction (e.g. south, west, north, east). "Window type" is input with information selected from pre-registered window size options (e.g. waist-high window, small window, full height, etc.). When a window is included in the exterior wall of the room that is the subject of the calculation, the user inputs the selected information into the subitem that corresponds to the direction the window faces (e.g. south and west). In addition, the above "window type" information (waist-high window, etc.) includes information on the window area ratio (the ratio of the window area to the exterior wall area) according to the size.

[0043] The above describes an example of items included in the "drawing information." Note that the "drawing information" is not limited to the above items, and may include information that can be read from various drawings.

[0044] The "specification information" shown in FIG. 5 is information indicating specifications of the equipment installed in each room of the building, the building's insulation performance, etc. "Specification information" is set for each room (room use) of the building. The "specification information" is registered, for example, in an external server or in the database of the control device 10. The "specification information" includes information indicating the specifications of the building's air conditioning, ventilation, lighting, and hot water equipment. Although not shown in the figure, the "specification information" also includes the above information, as well as information indicating the building's insulation performance specifications (exterior structure and window specifications) and the specifications of elevators, solar power generation, and other equipment.

[0045] The "specification information" used is information that is difficult to read from the building's design drawings and that can be set according to the "building use." The "specification information" is registered in the database for each of a number of "building uses," such as offices, hotels, etc. The control unit 12 selects from the multiple "specification information" pre-registered in the database that corresponds to the "building use" ("drawing information") input by the user, and inputs it as information for calculation. In the example shown below, the "specification information" when an office, etc. is input as the "building use" is explained. Note that the information used to select the "specification information" is not limited to the "building use," and various information included in the "drawing information" can be used.

[0046] In the following, "air conditioning", "ventilation", "lighting" and "hot water supply" will be described as examples of items of "specification information". As shown in FIG. 5, in this embodiment, for one item (e.g., "air conditioning"), multiple pieces of "specification information" corresponding to the grade of specifications of facility equipment and the like are registered. Specifically, the database registers "specification information" for two grades: "standard" and "high performance" that has higher energy consumption performance (lower energy consumption) than "standard". Note that in the following, as examples, "air conditioning", "ventilation", "lighting" and "hot water supply" of facility equipment installed in the "office" shown in FIG. 5 will be described.

[0047] "Air conditioning" is an item in which information indicating the specifications of the heat source COP (energy consumption efficiency) of the room to be calculated is input. The heat source COP value is input for "air conditioning". In this embodiment, the values ​​"3.2" for "standard" and "3.6" for "high performance" are input as the "specification information" for "air conditioning".

[0048] "Ventilation" is an item in which information indicating the specifications of the ventilation equipment for the room being calculated is input. The rated output (kW) value of the ventilation equipment is input for "Ventilation." In this embodiment, the values ​​"0.2" for "Standard" and "0.15" for "High Performance" are input as the "Specification Information" for "Ventilation."

[0049] "Lighting" is an item (group of items) into which information indicating the specifications of the lighting equipment in the room to be calculated is input. "Lighting" includes the subitems "occupancy detection control," "brightness detection control," "time schedule function," and "initial illuminance correction function."

[0050] In each of the above sub-items, information is input indicating the presence or absence of a control or function applied to the lighting device, or the content (method) of the control or function. In this embodiment, as the "specification information" for "brightness detection control", "none" is input for "standard" and "dimming method" is input for "high performance". In this embodiment, as the "specification information" for "occupancy detection control", "time schedule function", and "initial illuminance correction function", "none" is input for both "standard" and "high performance".

[0051] "Hot water supply" is an item in which information indicating the specifications of the hot water supply equipment for the room being calculated is input. "Hot water supply" is input with information indicating the heat source model of the hot water supply equipment. In this embodiment, as the "specification information" for "hot water supply", "storage type electric water heater" is input for "standard" and "commercial heat pump water heater" is input for "high performance".

[0052] An example of the "specification information" item has been described above. The user can select "standard" or "high performance" by operating the input unit 14 on the specification selection sheet (see FIG. 6) displayed on the display unit 15. The specification selection sheet will be described below.

[0053] The specification selection sheet shown in Figure 6 shows the "specification information" ("standard" and "high performance") of the equipment in each room ("air conditioning," "ventilation," "lighting," and "hot water"), as well as the performance (energy consumption) of the equipment based on the above "specification information." The specification selection sheet includes items for "primary energy consumption results" and "performance adjustment." The example shows the contents of each item for an office.

[0054] "Primary energy consumption results" is an item that shows the primary energy consumption of each piece of equipment in each room. In the example shown, "Primary energy consumption results" includes items "Design" and "Standard." The "Design" item shows the primary energy consumption of each piece of equipment ("Air conditioning," "Ventilation," "Lighting," and "Hot water") based on the selected "Specification Information" (either "Standard" or "High performance"). The "Standard" item shows the standard primary energy consumption of each piece of equipment.

[0055] "Performance adjustment" is an item that shows the selected "specification information" ("standard" and "high performance") for each piece of equipment in each room ("air conditioning," "ventilation," "lighting," and "hot water"). The example shows an example in which "standard" has been selected as the "specification information" for both "air conditioning" and "lighting," which are equipment that are the subject of calculations of the office's energy consumption. The example shows an example in which the presence or absence of "heat exchange" can be selected as an "air conditioning" specification. Furthermore, the example shows an example in which, in addition to the equipment specifications, the building's insulation performance specifications (a choice between "standard" and "high performance," and the presence or absence of blinds) can also be selected.

[0056] Instead of selecting "standard" or "high performance" by operating the input unit 14, the control unit 12 can automatically select "standard" or "high performance". In this case, for example, a configuration can be adopted in which the "specification information" of all the equipment in each room is set to either "standard" or "high performance". In addition, the "specification information" is not limited to the above items, and can include information on the specifications of various equipment and thermal insulation performance.

[0057] "Automatically generated information" is information related to facility equipment, and is automatically generated (converted) by the control unit 12 based on drawing information and specification information (see FIG. 2). "Automatically generated information" includes "air conditioning zone name," "room load processing," "outdoor air load processing," "direction," "exterior surface area," "window area," "cold heat generation," "hot heat generation," and "fan rated power," etc.

[0058] "Air conditioning zone name" is an item where a unique name is entered to indicate each air conditioned room in order to distinguish between multiple air conditioned rooms (air conditioning zones). "Air conditioning zone name" is generated by adding an arbitrary symbol (for example, "AC") to the "room name" of the drawing information.

[0059] "Room load processing" is the item where the name of each air conditioner that processes the room load of each air conditioning zone (load due to internal heat generation in the room, heat gained through the room from outside, and heat gained from solar radiation) is entered. "Outdoor air load processing" is the item where the name of each air conditioner that processes the outdoor air load of each air conditioning zone (load due to the introduction of fresh outdoor air) is entered. "Room load processing" and "outdoor air load processing" are generated, like "air conditioning zone name," by adding any symbol to the "room name" of the drawing information.

[0060] "Orientation" is an item in which information indicating the orientation of the exterior skin (exterior walls and roof) is input. The "orientation" of the exterior wall is generated based on the "exterior wall length" information in the drawing information. Specifically, in the drawing information shown in FIG. 4, when a numerical value for "exterior wall length" is input in a subitem indicating a certain orientation (e.g. south, etc.), it is presumed that there is an exterior wall facing that orientation. For this reason, the control unit 12 sets (generates) the orientation in which a numerical value for "exterior wall length" is input in the room that is the subject of the calculation as the "orientation" of the exterior wall.

[0061] The "orientation" of the roof is generated based on the "floor" information of the drawing information. Specifically, the control unit 12 sets (generates) the "orientation" of the roof to "horizontal" when the "floor" information is the "top floor", to "shade" when the "floor" information is the "bottom floor", and to "horizontal" and "shade" when the "floor" information is a "single-story building".

[0062] "Exterior skin area" is an item in which information indicating the exterior skin area of ​​each room is input. Here, the exterior skin area is the combination of the exterior wall area (area of ​​the exterior wall including the windows) by orientation of the room, the roof area, and the floor area. The control unit 12 calculates the exterior wall area by orientation by multiplying the "story height" value in the drawing information by the "exterior wall length" value by orientation. The control unit 12 also uses the "room area" value in the drawing information as the roof area and floor area. The control unit 12 generates the "exterior skin area" by adding up the values ​​of the exterior wall area, roof area, and floor area by orientation.

[0063] "Window area" is an item in which information indicating the area of ​​the window of each room is input. The control unit 12 generates the value of "window area" by multiplying the value of the exterior wall area by the value of the window area ratio of the "window type" in the drawing information.

[0064] "Cold heat generation" is an item group in which information regarding the generation of cold heat in the heat source of each room is input. "Cold heat generation" includes the subitems "number of units" and "rated cooling capacity".

[0065] "Number of units" is an item in which information indicating the number of devices that generate cold heat is input. The control unit 12 sets (generates) the value of "1" as the "number of units", for example.

[0066] "Rated cooling capacity" is an item in which the rated cooling capacity of equipment that generates cold heat is input. The control unit 12 multiplies a value based on the insulation performance of the exterior walls and windows, the outdoor air / indoor temperature and humidity conditions, and the heat load generated in the room (heat load of equipment, lighting, people, ventilation, etc. per unit floor area) by the "exterior surface area" or "room area (floor area)" to generate the "rated cooling capacity" value. Note that information on the insulation performance of the exterior walls and windows, the outdoor air / indoor temperature and humidity conditions, and the heat load generated in the room is set as "specification information."

[0067] "Heat generation" is a group of items in which information regarding the generation of heat in the heat source of each room is entered. "Heat generation" includes the subitems "Number of units" and "Rated heating capacity." The "Number of units" and "Rated heating capacity" of "Heat generation" are calculated in the same way as the "Number of units" and "Rated cooling capacity" of "Cold heat generation" described above.

[0068] "Blower rated power" is an item in which information indicating the power of the blower used in the air conditioner of the building is input. The control unit 12 generates the value of "Blower rated power" by dividing the larger of "Rated cooling capacity" and "Rated cooling capacity" by a predetermined coefficient (for example, an index such as ATF (Air Transport Factor)).

[0069] The above describes an example of items included in the "automatically generated information." Note that the "automatically generated information" is not limited to the above items, and may include information about various equipment and devices that can be generated based on drawing information.

[0070] The information ("drawing information", "specification information" and "automatically generated information") used to calculate the energy consumption of a building (energy consumption performance of a building) has been described above. In the energy consumption performance calculation system 1 according to this embodiment, a "target value" that is a target value for the energy consumption of a building is registered (see FIG. 1). In this embodiment, a value that is the standard for ZEB (Net Zero Energy Building) is adopted as the "target value". Here, "ZEB" refers to a building whose annual primary energy consumption is net zero or negative. A user can register the "target value" by, for example, inputting values ​​into the items of an input sheet (see FIG. 4) displayed on the display unit 15.

[0071] Hereinafter, the process of calculating the energy consumption performance of a building using the energy consumption performance calculation system 1 will be described with reference to the flowchart of FIG.

[0072] In step S101, the control unit 12, in response to a user's operation (for example, an operation using the input unit 14), causes the display unit 15 to display an input sheet (see FIG. 4). The user inputs "drawing information" and "target values" into the input sheet by operating the input unit 14.

[0073] Furthermore, in step S102, the control unit 12, in response to an operation by the user, causes the display unit 15 to display a specification selection sheet (see FIG. 6). The user operates the input unit 14 to select, on the specification selection sheet, "specification information" ("standard" or "high performance") for the facility equipment (air conditioning and lighting in the illustrated example) that is the subject of calculation for each room.

[0074] In step S103, the control unit 12 acquires the selected "specification information" from among the multiple "specification information" registered in the database based on the selection result of step S102 (see FIG. 2). In addition, the control unit 12 can calculate "automatically generated information" based on the selected "specification information" and "drawing information".

[0075] In step S104, the control unit 12 calculates the capacity of each facility device based on the "specification information" acquired in step S103. At this time, the user can select the facility device (select the "specification information") so as to satisfy the information on the facility device included in the "automatically generated information" (the facility capacity required for air conditioning, lighting, ventilation, and hot water supply).

[0076] In step S105, the control unit 12 creates calculation information using the "drawing information," "specification information," and "automatically generated information." In step S106, the control unit 12 uses a calculation program to calculate the energy consumption of the building based on the calculation information (see FIG. 2). This provides a calculated value of the energy consumption of the building.

[0077] In step S107, the control unit 12 outputs the calculated value of the energy consumption obtained in step S106 by displaying it on the display unit 15, and calculates the difference between the calculated value and the "target value" (hereinafter referred to as the "first performance difference"). If the first performance difference is equal to or less than zero, this indicates that the calculated value of the energy consumption of the building satisfies the ZEB standard.

[0078] Furthermore, after executing the process of step S106, in step S108, the control unit 12 calculates the energy consumption of the "standard" "specification information" and the energy consumption of the "high performance" "specification information" for each piece of equipment in each room. At this time, the control unit 12 acquires the "standard" and "high performance" "specification information" from the database. In addition, in step S109, the control unit 12 calculates the difference (hereinafter referred to as the "second performance difference") between the energy consumption of the "standard" "specification information" calculated in step S108 and the energy consumption of the "high performance" "specification information" for each piece of equipment in each room.

[0079] In step S110, the control unit 12 visualizes the selected results of "specification information" ("standard" and "high performance") as equipment devices whose specifications can be changed (improved) to optimal specifications. The process performed by the control unit 12 in step S110 will be described in detail below.

[0080] The control unit 12 extracts equipment for which the selection result of "specification information" ("standard" and "high performance") can be changed based on the first performance difference and the second performance difference. Specifically, the control unit 12 compares multiple second performance difference values ​​calculated for each equipment in each room. Next, the control unit 12 subtracts the selected second performance difference from the first performance difference in descending order of value. The subtraction is performed until the first performance difference becomes equal to or less than zero.

[0081] An example of a method for extracting equipment based on the first and second performance differences will be described below with reference to FIG. 7. In the following description, the first performance difference is indicated by a variable "α", and the second performance difference of an equipment in a certain room is indicated by a variable "β". The above β includes β1 to β8 indicating the equipment (air conditioning, ventilation, lighting, hot water equipment) in each room (Room A and Room B). The magnitude relationship of the second performance difference of each equipment is β1>β5>β3>β7>β4>β8>β2>β6.

[0082] As shown in the specific examples (1) to (4) of FIG. 7, the control unit 12 subtracts β (second performance difference) from α (first performance difference) in order from the largest value of β until the condition of "α-β≦0" is satisfied. Specifically, as shown in (1), the control unit 12 first subtracts β1, which has the largest value, from α. As shown in the above (1), α-β1>0, and the above condition is not satisfied. Therefore, the control unit 12 further subtracts β5, which has the next largest value, from α, as shown in (2). As shown in the above (2), α-β1-β5>0, and the above condition is not satisfied. Therefore, the control unit 12 further subtracts β3, which has the next largest value, from α, as shown in (3). As shown in the above (3), α-β1-β5-β3=0, and the condition of α-β≦0 is satisfied. In this case, the control unit 12 extracts the above β1, β3, and β5 as facility devices that can change the selection result of the "specification information" as shown in (4).

[0083] By carrying out the above process, it is possible to determine the optimal specification improvement points. Here, the "optimal specification improvement points" refer to the specification change (improvement) points that can efficiently (with fewer change points) reduce the first performance difference to zero or less. By determining the specification improvement points as described above, it is possible to prevent the selection of "specification information" from resulting in specification changes that are over-specified with respect to the target value, an excessive increase in the number of specification change points, and the like.

[0084] Next, the control unit 12 visualizes the facility equipment corresponding to the second performance difference that was the subject of the subtraction as the optimal specification improvement area. FIG. 6 shows an example in which "lighting" and "air conditioning" in the office are visualized as the specification improvement areas from among the items of "primary energy consumption result". The illustrated example shows an example in which the specification improvement areas are visualized by changing the color of the squares of the specification improvement areas in the specification selection sheet (table). It is also possible to adopt a mode in which the color of the characters indicating the "specification information" of the specification improvement areas is changed. In addition to visualizing the specification improvement areas, the order in which the second performance differences were subtracted (the order in which the second performance difference value is largest) may be displayed.

[0085] As shown in steps S111 to S113, the user can change the "specification information" of the visualized specification improvement part ("specification information" in the "performance investigation" item) to make the calculated value of the energy consumption of the building satisfy the ZEB standard (achieve the target). Specifically, the "specification information" of the specification improvement part ("lighting" and "air conditioning" in the office) shown in FIG. 6 is changed from "standard" to "high performance" (step S111). Accordingly, the energy consumption value of the "design" of "lighting" and "air conditioning" in the office decreases. The control unit 12 recalculates the energy consumption of the building based on the changed "specification information" in a manner generally similar to step S106 (step S112). As a result, the calculated value of the energy consumption of the building can be made to satisfy the ZEB standard (achieve the target) (step S113). The control unit 12 can display on the display unit 15 that the calculated value has become a value that satisfies the ZEB standard. It should be noted that, if the recalculation in step S112 results in the calculated value not satisfying the ZEB standard, the control unit 12 can proceed to the process of step S106 and visualize the specification improvement points again.

[0086] In addition, the control unit 12 can use a calculation program to calculate the building's energy consumption performance (predicted BEI value) based on the energy consumption that meets the above-mentioned ZEB standards, and output the calculated energy consumption performance by displaying it on the display unit 15 (see Figure 2).

[0087] As described above, the energy consumption performance calculation system 1 according to this embodiment can show the user which "specification information" of which equipment in which room should be changed in order to make the calculated value of the building's energy consumption the target value (ZEB standard value) by visualizing the specification improvement points. This makes it possible to avoid the user having to repeatedly input specification changes by trial and error until the calculated value reaches the target value, thereby reducing the user's workload.

[0088] In the example shown in Fig. 6, the number of combinations (patterns) of changeable facility devices is one, but the present invention is not limited to this. For example, in step S110, if multiple patterns of facility devices that can change the selection results can be extracted, the specification improvement points of the multiple patterns may be visualized. In this case, a configuration in which the color of the squares or the like is changed for each pattern can be adopted.

[0089] In the above example, the user operates the facility equipment to select "specification information" in step S102, but the present invention is not limited to this. For example, a configuration can be adopted in which the control unit 12 automatically selects "standard" specifications for all facility equipment in each room. In this case, a configuration can be adopted in which the energy consumption is first calculated (step S106) based on the "specification information" in which "standard" has been selected for all facility equipment, and if the calculation result does not reach the target value, the user operates the facility equipment to select "specification information" (step S102).

[0090] In the above example, the recalculation in step S112 is executed by changing only the "specification information", but the present invention is not limited to such an embodiment. For example, the recalculation may be executed after each item of the calculation information used for the recalculation in step S112 is changed to more accurate information by the user.

[0091] Although the first embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

[0092] A second embodiment of the present invention will be described below with reference to Fig. 8. In the following description of the second embodiment, differences from the first embodiment will be described, and descriptions of common configurations will be omitted as appropriate.

[0093] The energy consumption performance calculation system 1A according to the second embodiment differs from the energy consumption performance calculation system 1 according to the first embodiment in that it visualizes areas for specification improvement by taking into account the costs set for each "specification information" of the equipment.

[0094] As shown in FIG. 8, the database of the energy consumption performance calculation system 1A contains the cost (cost per unit area (yen / m2)) set for each “specification information” (“standard” and “high performance”) of each facility device. 2 The cost may include the cost of the device itself as well as the cost of installation work.

[0095] In the processing of step S110 shown in FIG. 3, the control unit 12 of the energy consumption performance calculation system 1A extracts multiple patterns of equipment for which the selection results can be changed, and visualizes equipment in a pattern in which the cost of the equipment after the change is low, as areas for specification improvement.

[0096] An example of a method for extracting equipment and devices that takes the above-mentioned costs into consideration will be described below with reference to FIG. 9. In the following description, the same variables α and β (β1 to β8) as in the description of FIG. 7 will be used. In the following description, the sum of β (for example, β1, β3, β5) that satisfies the condition "α-β≦0" will be indicated by a variable "γ". The above γ includes γ1 to γ3 that indicate the sum of multiple patterns of β. The magnitude relationship of each γ is γ2<γ1<γ3.

[0097] As shown in specific example (1), the control unit 12 extracts multiple calculation formulas (combinations of β to be subtracted) that satisfy the condition "α-β≦0". Three conditions are shown in FIG. 9: condition 1 (α-β1-β2-β3), condition 2 (α-β1-β5-β6), and condition 3 (α-β2-β3-β5). Next, as shown in (2), the control unit 12 extracts the condition (γ1 to γ3) that is the smallest (for example, γ2 (β1+β5+β6)) from among the above conditions 1 to 3. The control unit 12 visualizes the facility equipment with the extracted conditions as areas requiring specification improvement.

[0098] According to the above configuration, the conditions under which the energy consumption of a building reaches the target value and costs can be reduced can be visualized as areas for specification improvement.

[0099] As described above, the energy consumption performance calculation system 1, 1A according to one embodiment of the present invention is a specification information registration unit (database) in which specification information is registered, the specification information being set for each of a plurality of pieces of equipment installed in each room of a building, the specification information including "standard" "specification information" (first specification information) indicating the grade of the equipment with a predetermined energy consumption and "high performance" "specification information" (second specification information) indicating the grade of the equipment with a lower energy consumption than the "standard" "specification information"; An energy consumption performance calculation unit (control unit 12) calculates the energy consumption of the building using information including at least one selected from the "specification information" of "standard" and "high performance" (step S106); A target value registration unit (control unit 12) in which a target value of the energy consumption of the building is registered; A first performance difference calculation unit (control unit 12) that calculates a first performance difference indicating the difference between the calculated value of the energy consumption by the energy consumption performance calculation unit and the target value (step S107); an extraction unit (control unit 12) that extracts facility devices for which a selection result of the "standard" and "high performance" "specification information" can be changed so as to reduce the first performance difference based on the energy consumption related to the "standard" "specification information" for each of the plurality of facility devices and the energy consumption related to the "high performance" "specification information" (steps S108 to S110); A visualization unit (control unit 12) that visualizes (step S110) the information on the facility equipment extracted by the extraction unit (control unit 12); It is equipped with the following.

[0100] This configuration can reduce the burden of calculating the energy consumption performance of a building. In other words, it is possible to visualize which equipment specifications should be changed when determining the specifications ("standard" or "high quality") of the equipment (air conditioning, ventilation, lighting, and hot water supply) to be installed in each room so that the building's energy consumption reaches the target value (ZEB standard value). This reduces the burden on users who calculate the energy consumption performance of a building.

[0101] In addition, the energy consumption performance calculation system 1, 1A, A second performance difference calculation unit (control unit 12) that calculates a second performance difference indicating a difference between an energy consumption related to the "standard" "specification information" and an energy consumption related to the "high performance" "specification information" for each of the plurality of facility devices (step S109); a subtraction unit (control unit 12) that subtracts the second performance difference selected from the plurality of second performance differences from the first performance difference (step S110) so that the first performance difference becomes a predetermined value; Equipped with The extraction unit (control unit 12) The facility device corresponding to the second performance difference that is the subject of the subtraction by the subtraction unit is extracted.

[0102] With this configuration, it is possible to preferably extract facility devices whose specifications require change.

[0103] In addition, the subtraction unit (control unit 12) Among the plurality of second performance differences, the second performance differences are selected in descending order of value and subtracted (step S108).

[0104] With this configuration, the conditions under which the energy consumption of a building reaches a target value can be efficiently determined.

[0105] In addition, the energy consumption performance calculation system 1A is A cost information registration unit (database) is provided in which information indicating a cost set for each piece of specification information of the facility equipment is registered, The extraction unit (control unit 12) Among the facility devices for which the selection result of the "standard" and "high performance" "specification information" can be changed, the facility devices with the low cost are extracted.

[0106] With this configuration, it is possible to visualize the conditions under which a building's energy consumption reaches a target value and costs can be reduced.

[0107] In addition, the energy consumption performance calculation system 1, 1A, The energy consumption performance calculation unit includes a specification information change unit (control unit 12) that can change the selection result of the "specification information" between "standard" and "high performance" used in calculating the energy consumption of the building by the energy consumption performance calculation unit in response to a user's operation.

[0108] With this configuration, it is possible to change the specification information based on the visualized conditions.

[0109] The control unit 12 in this embodiment is one form of the energy consumption performance calculation unit, target value registration unit, first performance difference calculation unit, second performance difference calculation unit, extraction unit, visualization unit, subtraction unit, and specification information change unit in accordance with the present invention. The database according to this embodiment is an embodiment of the specification information registration section and the cost information registration section according to the present invention. Moreover, the "standard" "specification information" according to this embodiment is one form of the first specification information according to the present invention. Moreover, the "specification information" of "high performance" according to this embodiment is one form of the second specification information according to the present invention.

[0110] Although each embodiment of the present invention has been described above, the present invention is not limited to the above configurations, and various modifications are possible within the scope of the invention described in the claims. Furthermore, the specific numerical values ​​exemplified in the above description are merely examples, and can be modified as desired.

[0111] For example, in this embodiment, an example has been shown in which the grades of "specification information" registered in the database are set to two levels, "standard" and "high performance", but the present invention is not limited to such a configuration. For example, the grades of "specification information" may be set to three or more levels. In this case, a configuration may be adopted in which the difference in energy consumption between a certain grade of "specification information" and the next highest grade of performance after the said "specification information" is calculated as the second performance difference. Specifically, if a grade of "ultra high performance" that has higher performance than "high performance" is set, the difference in energy consumption between "high performance" and "ultra high performance" may be set as the second performance difference.

[0112] In addition, in this embodiment, an example is shown in which a ZEB standard value is adopted as the target value for the building's energy consumption, but this is not limited to such a configuration, and various energy consumption indicators can be adopted as the target value.

[0113] In addition, in this embodiment, an example has been shown in which the BEI is adopted as an index of energy consumption performance predicted by the energy consumption performance calculation system 1, but this is not limited to such a configuration, and various energy consumption performance indexes can be adopted as the index of energy consumption performance.

[0114] In addition, in the present embodiment, the control device 10 is a control device such as a personal computer or a server, but is not limited to such a configuration. For example, the control device 10 may be a terminal such as a tablet or a smartphone. [Explanation of symbols]

[0115] 1. Energy consumption performance calculation system 12 Control section 14 Input section 15 Display

Claims

1. a specification information registration unit in which specification information is registered, the specification information being set for each of a plurality of equipment devices installed in each room of a building, the specification information including first specification information indicating a class of the equipment device having a predetermined energy consumption amount and second specification information indicating a class of the equipment device having a lower energy consumption amount than that of the first specification information; an energy consumption performance calculation unit that calculates an energy consumption amount of the building using information including at least one selected from the first specification information and the second specification information; a target value registration unit in which a target value of the energy consumption of the building is registered; a first performance difference calculation unit that calculates a first performance difference indicating a difference between a calculated value of the energy consumption by the energy consumption performance calculation unit and the target value; an extraction unit that extracts the facility devices for which a selection result of the first specification information and the second specification information can be changed so as to reduce the first performance difference, based on an energy consumption related to the first specification information and an energy consumption related to the second specification information for each of the plurality of facility devices; a visualization unit that visualizes the information of the facility equipment extracted by the extraction unit; and Equipped with Energy consumption performance calculation system.

2. a second performance difference calculation unit that calculates, for each of the plurality of facility devices, a second performance difference indicating a difference between an energy consumption related to the first specification information and an energy consumption related to the second specification information; a subtraction unit that subtracts the second performance difference selected from the plurality of second performance differences from the first performance difference so that the first performance difference becomes a predetermined value; Equipped with The extraction unit is extracting the facility device corresponding to the second performance difference that is the subject of the subtraction by the subtraction unit; The energy consumption performance calculation system according to claim 1 .

3. The subtraction unit is Among the plurality of second performance differences, the second performance differences are selected in descending order of value and subtracted. The energy consumption performance calculation system according to claim 2 .

4. a cost information registration unit in which information indicating a cost set for each piece of specification information of the facility equipment is registered; The extraction unit is extracting, from among the facility devices for which a selection result of the first specification information and the second specification information can be changed, the facility device having a low cost; The energy consumption performance calculation system according to claim 1 .

5. a specification information changing unit that is capable of changing a selection result of the first specification information and the second specification information used in the calculation of the energy consumption amount of the building by the energy consumption performance calculation unit in response to an operation by a user; The energy consumption performance calculation system according to any one of claims 1 to 4.

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