JP2009020640A - Selection method, selection device and selection program, for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To select an air conditioner of which energy consumption becomes minimum. <P>SOLUTION: The maximum thermal load of a building installed in an air conditioner is calculated, and an air conditioner having a capacity for storing the maximum thermal load is temporarily selected. The energy consumption of the temporarily selected air conditioner is calculated based on the partial load generation frequency of the building. The life cycle costs of the air conditioner are calculated based on the energy consumption or initial costs or the like, and the air conditioner whose life cycle costs are the minimum is selected from the temporarily selected air conditioner. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

    The present invention relates to an air conditioner selection method, a selection device, and a selection program, and particularly relates to measures for reducing the life cycle cost of an air conditioner.

For example, Patent Literature 1 discloses a method for selecting the capacity and type of an air conditioner installed in a building or the like. In the automatic air conditioning design apparatus disclosed in Patent Document 1, first, the maximum heat load of a building is calculated. Specifically, in the automatic air-conditioning design apparatus, data such as weather conditions prepared in advance, building structure, and room usage are displayed on the display unit. When the user selects each displayed data, the maximum heat load is calculated. Next, when the maximum heat load is calculated, among the air conditioner data prepared in advance, air conditioner data having a capacity corresponding to the maximum heat load is displayed. And an appropriate air conditioner is selected by a user selecting while confirming the display content.
JP-A-8-94150

    By the way, in recent years, from the viewpoint of protection of the global environment and efficient use of energy, there is an increasing need to design buildings by evaluating energy costs and life cycle costs including air conditioning equipment. Along with this, the implementation of energy calculations for the entire building in accordance with laws and standards, performance regulations for members and facilities, etc. are being developed.

    However, the above-described method for selecting an air conditioner disclosed in Patent Document 1 has a problem that it does not include a viewpoint of reducing energy consumption or life cycle cost related to the air conditioner. That is, since the air conditioner is simply selected based on the thermal load of the building, the energy consumption and life cycle cost of the air conditioning equipment cannot always be reduced.

    The present invention has been made in view of such a point, and the object thereof is to select an air conditioner to be installed in a building or the like so as to satisfy a necessary capacity and minimize energy consumption or life cycle cost. It is to provide a method, a selection device and a selection program.

    In the present invention, in addition to the required capacity (required capacity) that can correspond to the thermal load of the building, the energy consumption or life cycle cost that varies depending on the thermal load characteristics of the building is used as a selection criterion for the air conditioner.

    Specifically, the first invention includes a load calculation step for calculating a thermal load of a building in which the air conditioner is installed, and a temporary selection step for temporarily selecting an air conditioner having a capacity that can cover the design heat load based on the heat load. And a selection step of selecting an air conditioner with the lowest energy consumption among the temporarily selected air conditioners.

    In said invention, the heat load in the information of an object building and several weather conditions is calculated. Next, an air conditioner having a capacity sufficient to cover the design heat load determined based on the calculated maximum heat load is temporarily selected. That is, here, one or more air conditioners having a capacity equal to or greater than the design heat load are selected. Next, among the temporarily selected air conditioners, the one with the lowest energy consumption is selected. In other words, even an air conditioner with a margin for the design heat load is selected with the lowest energy consumption.

    In a second aspect based on the first aspect, the selecting step calculates the energy consumption of the temporarily selected air conditioner based on at least the heat load of the building, and selects the air conditioner having the lowest energy consumption. It is a process to do.

    In the above invention, the energy consumption of the temporarily selected air conditioner is calculated based on the thermal load or the like of the building (for example, the thermal load and weather conditions). That is, for example, the total energy consumption of the air conditioner when operated under a heat load or the like throughout the year is calculated. And the air conditioner with the lowest total energy consumption is selected.

    According to a third invention, in the first invention, the selecting step calculates a frequency of occurrence of the partial heat load of the building based on the heat load of the building. This is a step of selecting an air conditioner having a maximum partial load factor that coincides with or is closest to the peak load factor of the occurrence frequency of the partial heat load of the building.

    In the above invention, the occurrence frequency of the partial heat load is calculated based on the heat load of the building. As shown in FIG. 7, this partial load occurrence frequency is the occurrence frequency of, for example, an annual partial heat load (a load factor with the maximum heat load being 100%) in the building. Among the temporarily selected air conditioners, the partial load factor (point a in FIG. 6) that maximizes the COP in the partial load characteristics of the air conditioner is the peak load factor of the building partial load occurrence frequency (point b in FIG. 7). The closest air conditioner is selected. That is, an air conditioner with the optimum COP in the range with the highest operation frequency is selected.

    According to a fourth aspect of the present invention, there is provided a load calculation step of calculating a thermal load of a building in which an air conditioner is installed, a temporary selection step of temporarily selecting an air conditioner having a capacity that can cover a design heat load based on the thermal load, and the temporary An energy calculation step for calculating the energy consumption of the selected air conditioner based on at least the thermal load of the building; a cost calculation step for calculating the life cycle cost of the temporarily selected air conditioner based on at least the energy consumption; and Among the temporarily selected air conditioners, a selection step of selecting an air conditioner with the lowest life cycle cost is provided.

    In said invention, the heat load in the information of an object building and several weather conditions is calculated. Next, an air conditioner having a capacity sufficient to cover the design heat load determined based on the calculated maximum heat load is temporarily selected. That is, here, one or more air conditioners having a capacity equal to or greater than the design heat load are selected. Next, the energy consumption of the temporarily selected air conditioner is calculated based on the thermal load or the like of the building (for example, the thermal load and weather conditions). Next, the life cycle cost of the air conditioner is calculated based on at least the consumed energy. And the air conditioner with the lowest life cycle cost is selected.

    5th invention is the load calculation which calculates the thermal load of the said building based on the information of the building information input part (12) which inputs the information of the building in which an air conditioner is installed, and the said building information input part (12) Temporary selection unit (14) for temporarily selecting an air conditioner having a capacity that can cover the design thermal load based on the thermal load of the unit (13) and the load calculation unit (13), and provisional selection by the temporary selection unit (14) The air conditioner includes a selection unit (18) that selects an air conditioner with the lowest energy consumption.

    In said invention, the load calculation part (13) calculates the information of a building information input part (12), and the thermal load in several weather conditions. Next, in the temporary selection unit (14), an air conditioner having a capacity sufficient to cover the design heat load determined based on the maximum heat load of the heat load is temporarily selected. That is, here, one or more air conditioners having a capacity equal to or greater than the design heat load are selected. Next, in the selection unit (18), one having the lowest energy consumption is selected from the temporarily selected air conditioners. In other words, even an air conditioner with a margin for the design heat load is selected with the lowest energy consumption.

    According to a sixth aspect of the present invention, in the fifth aspect of the present invention, an energy consumption calculation unit that calculates energy consumption of the air conditioner temporarily selected by the temporary selection unit (14) based on at least the thermal load of the load calculation unit (13). (15) is provided. And the said selection part (18) selects the air conditioner with the lowest energy consumption computed by the said energy consumption calculation part (15).

    In the above-described invention, the energy consumption calculation unit (15) calculates the energy consumption of the air conditioner based on the thermal load of the building or the like (for example, the thermal load and weather conditions). That is, for example, the total energy consumption of the air conditioner when operated under a thermal load throughout the year is calculated. In the selection unit (18), the air conditioner having the lowest total energy consumption is selected.

    7th invention is provided with the load occurrence frequency calculation part (19) which calculates the occurrence frequency of the partial thermal load of the said building based on the thermal load of the said load calculation part (13) in the said 5th invention. . Then, the selection unit (18) has the partial load factor at which the COP is maximum among the air conditioners temporarily selected by the temporary selection unit (14) matches the peak load factor of the occurrence frequency of the partial thermal load of the building. Or the closest air conditioner is selected.

    In the above invention, the load occurrence frequency calculation unit (19) calculates the occurrence frequency of the partial heat load of the building. Then, the partial load factor (point a in FIG. 6) at which the COP is maximized in the partial load characteristics of the air conditioner among the temporarily selected air conditioners in the selection unit (18) is the peak of the partial load occurrence frequency of the building. The closest air conditioner that matches or is closest to the load factor (point b in FIG. 7) is selected. That is, an air conditioner that has an optimum COP (coefficient of performance) in the range where the operation frequency is the highest is selected.

    The eighth invention relates to a building information input unit (12) for inputting information of a building in which an air conditioner is installed, and a load calculation for calculating the thermal load of the building based on the information of the building information input unit (12). Temporary selection unit (14) for temporarily selecting an air conditioner having a capacity that can cover the design thermal load based on the thermal load of the unit (13) and the load calculation unit (13), and provisional selection by the temporary selection unit (14) The energy consumption calculation unit (15) that calculates the energy consumption of the air conditioner at least based on the thermal load of the load calculation unit (13), and the life cycle cost of the temporarily selected air conditioner is at least the energy consumption calculation unit ( Of the air conditioner temporarily selected by the cost calculation unit (16) calculated based on the energy consumption calculated in 15) and the temporary selection unit (14), the life cycle calculated by the cost calculation unit (16) Selecting the air conditioner with the lowest cost (18) and in which is provided with a.

    In said invention, the load calculation part (13) calculates the information of a building information input part (12) and the thermal load in several weather conditions. Next, in the temporary selection unit (14), an air conditioner having a capacity sufficient to cover the design heat load determined based on the maximum heat load of the heat load is temporarily selected. That is, here, one or more air conditioners having a capacity equal to or greater than the design heat load are selected. Next, the energy consumption calculation unit (15) calculates the energy consumption of the temporarily selected air conditioner based on the thermal load of the building (for example, the thermal load and weather conditions). Next, in the cost calculation unit (16), the life cycle cost of the air conditioner is calculated based on at least the consumed energy. In the selection unit (18), an air conditioner having the lowest life cycle cost is selected.

    According to a ninth aspect of the present invention, there is provided a load calculating means for calculating a thermal load of the building based on information on the building in which the air conditioner is installed, and an air conditioner having a capacity capable of covering the design heat load based on the thermal load. Temporary selection means for selecting, the energy consumption of the temporarily selected air conditioner is calculated based on at least the thermal load of the building, and functions as a selection means for selecting the air conditioner with the lowest energy consumption.

    In the above invention, the computer calculates the heat load of the building, and temporarily selects an air conditioner having a capacity sufficient to cover the design heat load determined based on the maximum heat load of the heat load. That is, here, one or more air conditioners having a capacity equal to or greater than the design heat load are selected. Next, the computer calculates the energy consumption of the temporarily selected air conditioner based on the thermal load of the building (for example, the heat load and weather conditions), and the lowest energy consumption among the temporarily selected air conditioners. Select one. That is, even if the air conditioner has a margin for the design heat load, the one with the lowest energy consumption is selected.

    According to a tenth aspect of the present invention, there is provided a computer that includes a load calculating means for calculating a thermal load of the building based on information on the building in which the air conditioner is installed, and an air conditioner having a capacity capable of covering the design heat load based on the thermal load. Temporary selection means for selecting, load occurrence frequency calculating means for calculating the occurrence frequency of the partial thermal load of the building based on the thermal load of the building, and among the temporarily selected air conditioners, the partial load factor that maximizes the COP is It functions as a selection means for selecting an air conditioner that matches or is closest to the peak load factor of the occurrence frequency of the partial heat load of the building.

    In the above invention, the computer calculates the heat load of the building, and temporarily selects an air conditioner having a capacity sufficient to cover the design heat load determined based on the maximum heat load of the heat load. That is, here, one or more air conditioners having a capacity equal to or greater than the design heat load are selected. Next, the computer calculates the occurrence frequency of the partial heat load of the building. The partial load factor (point a in FIG. 6) at which the COP is maximized in the partial load characteristics of the air conditioner among the temporarily selected air conditioners is the peak load factor of the partial load occurrence frequency of the building (see FIG. 6). The air conditioner closest to or closest to point b) is selected. That is, an air conditioner that has an optimum COP (coefficient of performance) in the range where the operation frequency is the highest is selected.

    According to an eleventh aspect of the present invention, a computer is provided with load calculation means for calculating a thermal load of the building based on information on the building in which the air conditioner is installed, and an air conditioner having a capacity capable of covering the design heat load based on the thermal load. Temporary selection means for selecting, energy calculation means for calculating the energy consumption of the temporarily selected air conditioner based on at least the thermal load of the building, and calculating the life cycle cost of the temporarily selected air conditioner based on at least the energy consumption The cost calculation means to perform the function as selection means for selecting the air conditioner having the lowest life cycle cost among the temporarily selected air conditioners.

    In the above invention, the computer calculates the heat load of the building, and selects an air conditioner having a capacity sufficient to cover the design heat load determined based on the maximum heat load of the heat load. That is, here, one or more air conditioners having a capacity equal to or greater than the design heat load are selected. Next, the computer calculates the energy consumption of the air conditioner based on the thermal load of the building (for example, the thermal load and weather conditions). Next, the life cycle cost of the air conditioner is calculated based on at least the energy consumption, and the air conditioner with the lowest life cycle cost is selected.

    As described above, according to the present invention, an air conditioner having a capacity that can cover the maximum heat load of a building is temporarily selected, and an air conditioner is selected in consideration of energy consumption of each air conditioner. Therefore, an air conditioner with low energy consumption can be selected while satisfying the required capacity. Thereby, the energy-saving of an air conditioner can be achieved.

    According to the fourth, eighth, or eleventh invention, the air conditioner is selected in consideration of the life cycle cost calculated based on the energy consumption or the like. Therefore, not only energy saving but also life cycle cost can be reduced.

    According to the third, seventh, or tenth invention, among the temporarily selected air conditioners, the peak load factor of the partial load characteristic coincides with or is closest to the peak load factor of the partial load occurrence frequency of the building. Was selected. Therefore, the COP of the air conditioner can be optimized in the range where the usage frequency is the highest. Therefore, the energy consumption of the air conditioner can be reduced. Thereby, the energy-saving of an air conditioner can be achieved. Thus, since it is only necessary to compare the partial load characteristics of the air conditioner and the partial load occurrence frequency of the building, an air conditioner with low energy consumption can be easily selected.

    Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Embodiment 1
A first embodiment of the present invention will be described. The air conditioner selection device (10) of the first embodiment is for selecting an air conditioner installed in a building or the like. In this embodiment, as shown in FIG. 1, an air conditioner (1) that is a so-called multi air conditioner for buildings is selected. This air conditioner (1) consists of multiple indoor units (3) installed in each room in the building (building) and outdoor units (2) installed on the rooftop and connected to each indoor unit (3) It is equipped with.

    The air conditioner (1) includes not only a type in which air is cooled or heated by exchanging heat with the refrigerant in the refrigerant circuit, but also a type having a primary side refrigerant circuit and a secondary side water circuit. It may be.

    As shown in FIG. 2, the air conditioner selection device (10) includes an air conditioner information storage unit (11), a building information input unit (12), a load calculation unit (13), an air conditioner temporary selection unit ( 14), an energy consumption calculation unit (15), a cost calculation unit (16), a related information storage unit (17), and an air conditioner selection unit (18).

    The air conditioner information storage unit (11) stores information (specifications) related to the air conditioner (1). Specifically, the air conditioner information storage unit (11) stores multiple types of capacity (capacity) of the outdoor unit (2) and indoor unit (3), power consumption, partial load characteristics, price, service life, etc. ing. The air conditioner information storage unit (11) can input new information at any time.

    The building information input unit (12) can input information necessary for calculating the heat load of the building (each room). Specifically, information on buildings and weather conditions are input to the building information input unit (12). The information regarding the building includes the structure, thermal characteristics, area, and the like of walls, windows, ceilings, floors, etc. that constitute the room to be calculated. Further, the internal heat generation amount, the number of people in the room, the ventilation amount, the design temperature condition, and the like of the target room are input as information related to the building. The weather conditions are those of the city where the air conditioner (1) is installed, and are designed weather conditions and annual weather data (for example, temperature, humidity, solar radiation, and the like) used for energy calculation.

    The load calculation unit (13) is configured to calculate the heat load (maximum heat load) of each room of the building based on the information input to the building information input unit (12).

    The air conditioner temporary selection unit (14) is based on the maximum heat load of the heat load calculated by the load calculation unit (13) from the air conditioners (1) stored in the air conditioner information storage unit (11). Thus, the design heat load is calculated, and the air conditioner (1) having a capacity larger than the design heat load is temporarily selected. That is, one or more types of air conditioners (1) having a capacity equal to or greater than the design heat load are temporarily selected.

    The energy consumption calculation unit (15) is an air conditioner (1) temporarily selected by the air conditioner temporary selection unit (14) based on the heat load and the like (for example, heat load and weather conditions) of the load calculation unit (13). ) To calculate the energy consumption every time. That is, the energy consumption calculation unit (15) calculates the energy consumption of the air conditioner (1) when operated under the heat load calculated by the load calculation unit (13).

    The cost calculation unit (16) is configured to calculate a life cycle cost for each temporarily selected air conditioner (1). Specifically, the cost calculation unit (16) calculates the running cost from the energy consumption of the energy consumption calculation unit (15). Then, the cost calculation unit (16) calculates the life cycle cost by adding the initial cost and the maintenance cost determined according to the capacity (type) of the air conditioner (1) to the running cost. The initial cost includes the equipment cost and construction cost of the air conditioner (1), and the maintenance cost includes maintenance cost and disposal cost.

    The related information storage unit (17) stores information necessary for calculating the life cycle cost in the cost calculation unit (16). Specifically, the related information storage unit (17) stores a power charge system, a power charge unit price, an assumed interest rate, and the like.

    The air conditioner selection unit (18) is configured to select the air conditioner (1) having the minimum (minimum) life cycle cost calculated by the cost calculation unit (16).

    Next, a method for selecting the air conditioner (1) (that is, a method for selecting the capacity of the air conditioner (1)) will be described with reference to FIGS.

    When the selection is started, first, in step ST1 of FIG. 3, the air conditioner (1) is temporarily selected. Specifically, the provisional selection method of the air conditioner (1) will be described with reference to FIG. In step ST11, the maximum heat load of each room is calculated in the load calculation unit (13). In step ST12, all indoor units (3) having a capacity equal to or greater than the maximum heat load are selected for each room in the air conditioner temporary selection unit (14). In other words, one or more types of indoor units (3) are selected from the air conditioner information storage unit (11) for each room. In step ST13, the outdoor unit (2) is selected in the air conditioner temporary selection unit (14). Specifically, the selected indoor unit (3) is variously combined, and the sum of the capacities of the indoor units (3) is calculated for each combination. In each combination, one or a plurality of types of outdoor units (2) having a capacity equal to or greater than the sum of the capacities of the indoor units (3) are selected. Thus, one or more combinations of the indoor unit (3) and the outdoor unit (2) are selected, and the provisional selection of the air conditioner (1) is completed.

    When the air conditioner (1) is temporarily selected in step ST1, the process proceeds to step ST2. In step ST2, the energy consumption calculation unit (15) calculates the energy consumption of each temporarily selected air conditioner (1).

    In step ST3, the running cost for the energy consumption of each air conditioner (1) is calculated in the cost calculation unit (16). For example, in the case of the air conditioner (1) driven using electric power, the electric power cost is calculated from the energy consumption according to the contract contents with the electric power company such as using cheap night electric power (midnight electric power).

    In step ST4, the cost calculation unit (16) calculates the life cycle cost of each air conditioner (1). Specifically, an initial cost, a maintenance cost, a disposal cost, a useful life and an assumed interest rate that are determined in advance according to the capacity of the air conditioner (1) are set. Then, the life cycle cost of each air conditioner (1) is calculated by adding the initial cost, the maintenance cost, etc., and the above-described running cost.

    In step ST5, the air conditioner (1) having the lowest life cycle cost is selected in the air conditioner selection unit (18). That is, the combination of the indoor unit (3) and the outdoor unit (2) with the lowest cost is selected. This completes the selection of the air conditioner (1).

-Effect of Embodiment 1-
In this embodiment, an air conditioner (1) having a capacity that can cover the heat load of a building (each room) is temporarily selected, and the air conditioner (1) is selected in consideration of the energy consumption of each air conditioner (1). I did it. Therefore, the air conditioner (1) with low energy consumption can be selected while satisfying the necessary capacity. Thereby, the energy-saving of an air conditioner can be achieved.

    Furthermore, in the present embodiment, the air conditioner (1) is selected in consideration of life cycle costs such as cost for energy consumption, initial cost and maintenance cost. Therefore, in addition to energy saving, the life cycle cost can be reduced.

<< Embodiment 2 >>
A second embodiment of the present invention will be described. The second embodiment is based on the partial load characteristics of the air conditioner (1) and the load occurrence frequency of the building, instead of the first embodiment calculating and selecting the energy consumption and cost of the air conditioner (1). So that they can be selected. That is, the selection method of the present embodiment is to select the air conditioner (1) with low energy consumption by a simple method. Here, the configuration and operation different from the first embodiment will be described.

    As shown in FIG. 5, the air conditioner selection device (10) of the present embodiment is the same as the air conditioner selection device (10) of the first embodiment, in which the energy consumption calculation unit (15), the cost calculation unit (16), and the related information storage are stored. The unit (17) is omitted, and a load occurrence frequency calculation unit (19) is newly provided.

    The partial load characteristics (see FIG. 6) of the air conditioner (1) are stored as information in the air conditioner information storage unit (11) of the air conditioner selection device (10). This partial load characteristic shows the relationship of the COP (coefficient of performance) to the partial load factor (%) and varies depending on the air conditioner (1). That is, in FIG. 6, when the partial load factor is a%, the COP is the highest and the energy efficiency is the highest.

    The load occurrence frequency calculation unit (19) is configured to calculate a partial load occurrence frequency (see FIG. 7) in the building based on the thermal load of the load calculation unit (13). In other words, the load occurrence frequency calculation unit (19) calculates the occurrence frequency for each partial heat load factor with the maximum heat load generated in the building as 100%. FIG. 7 shows that the heat load having the load factor b% is generated most. The partial load factor having the highest occurrence frequency such as b% is the “peak load factor of the occurrence frequency of the partial thermal load of the building” according to the present invention. That's it.

    The air conditioner selection unit (18) includes the partial load characteristics of each air conditioner (1) temporarily selected by the air conditioner temporary selection unit (14) and the partial load generation calculated by the load occurrence frequency calculation unit (19). Contrast with frequency. The air conditioner selection unit (18) is configured to select an air conditioner (1) whose partial load factor at which the COP is maximum in the partial load characteristic matches or is closest to the peak load factor of the partial load occurrence frequency. ing. In this way, by matching peak load factors, the air conditioner (1) is most frequently operated in the highest COP state. Thereby, for example, the energy consumption of the air conditioner (1) is reduced throughout the year.

    Next, a method for selecting the air conditioner (1) will be described with reference to FIG.

    When the selection of the air conditioner (1) is started, the air conditioner (1) is temporarily selected in step ST21. Here, as in step ST1 (FIG. 3) in the first embodiment, one or more combinations of the indoor unit (3) and the outdoor unit (2) are selected by the air conditioner temporary selection unit (14), Air conditioner (1) is temporarily selected.

    When the selection of the air conditioner (1) is started, the partial load occurrence frequency of the building is calculated by the load occurrence frequency calculation unit (19) in step ST22.

    When the air conditioner (1) is temporarily selected and the partial load occurrence frequency of the building is calculated, the air conditioner selection unit (18) selects the air conditioner (1) in step ST23. The air conditioner selection unit (18) reads out the partial load characteristics of each temporarily selected air conditioner (1) from the air conditioner information storage unit (11) and compares it with the partial load occurrence frequency of the building. Then, the air conditioner selection unit (18) matches or most recently matches the peak load ratio of the partial load occurrence frequency from among the temporarily selected air conditioners (1). Select the air conditioner (1) to be used. This completes the selection of the air conditioner (1).

-Effect of Embodiment 2-
In the present embodiment, an air conditioner (1) having a capacity that can cover the heat load of a building (each room) is temporarily selected, and the partial load factor at which the COP is maximized in the partial load characteristics from the air conditioner (1). Was selected to match or most closely match the peak load factor of the partial load occurrence frequency of the building. The COP of the air conditioner (1) can be optimized in the most frequently used range. Therefore, energy consumption in the life cycle of the air conditioner (1) can be reduced. Thereby, the energy-saving of an air conditioner can be achieved.

    Moreover, since it is only necessary to compare the partial load characteristics of the air conditioner (1) and the partial load occurrence frequency of the building, the air conditioner (1) with low energy consumption can be easily selected.

<< Other Embodiments >>
The above embodiment may be configured as follows.

    For example, in each of the above embodiments, the air conditioner (1) in which one outdoor unit (2) is connected to the plurality of indoor units (3) has been described. However, the present invention is not limited to this, and the plurality of indoor units is (3) is divided into a plurality of groups, and can be applied to an air conditioner (1) that connects one outdoor unit (2) for each group.

    In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or its use.

    As described above, the present invention is useful as an air conditioner selection method, a selection device, and a selection program.

It is sectional drawing which shows the structure and arrangement | positioning of an air conditioning machine roughly. It is a block diagram which shows the air conditioner selection apparatus which concerns on Embodiment 1. FIG. It is a flowchart which shows the selection method of the air conditioning machine which concerns on Embodiment 1. FIG. It is a flowchart which shows the temporary selection method of the air conditioning machine which concerns on Embodiment 1. FIG. It is a block diagram which shows the air conditioner selection apparatus which concerns on Embodiment 2. It is a graph which shows the partial load characteristic of an air conditioner. It is a graph which shows the partial load occurrence frequency of a building. It is a flowchart which shows the selection method of the air conditioning machine which concerns on Embodiment 2. FIG.

Explanation of symbols

1 Air conditioner
2 Outdoor unit
3 Indoor unit
10 Air conditioner selection device (computer)
12 Building information input section
13 Load calculator
14 Air Conditioner Temporary Selection Department
15 Energy consumption calculator
16 Cost calculator
18 Air conditioner selection department
19 Load occurrence frequency calculator

Claims (11)

A load calculation step for calculating the thermal load of the building where the air conditioner is installed;
A provisional selection step of provisionally selecting an air conditioner having a capacity capable of covering the design heat load based on the heat load;
A method for selecting an air conditioner, comprising: a selecting step for selecting an air conditioner having the lowest energy consumption among the temporarily selected air conditioners. In claim 1,
The selection step is a step of calculating the energy consumption of the temporarily selected air conditioner based on at least the heat load of the building and selecting an air conditioner having the lowest energy consumption. Method. In claim 1,
The selection step calculates the occurrence frequency of the partial thermal load of the building based on the thermal load of the building, and among the temporarily selected air conditioners, the partial load factor at which the COP is maximum is the partial thermal load of the building. A method for selecting an air conditioner, characterized in that it is a step of selecting an air conditioner that coincides with or is closest to the peak load rate of the occurrence frequency. A load calculation step for calculating the thermal load of the building where the air conditioner is installed;
A provisional selection step of provisionally selecting an air conditioner having a capacity capable of covering the design heat load based on the heat load;
An energy calculation step of calculating the energy consumption of the temporarily selected air conditioner based on at least the heat load of the building;
A cost calculating step of calculating a life cycle cost of the temporarily selected air conditioner based on at least the energy consumption;
A method of selecting an air conditioner, comprising: a selection step of selecting an air conditioner having the lowest life cycle cost among the temporarily selected air conditioners. A building information input unit (12) for inputting information of the building where the air conditioner is installed;
A load calculation unit (13) that calculates the thermal load of the building based on the information of the building information input unit (12);
A temporary selection unit (14) for temporarily selecting an air conditioner having a capacity that can cover the design thermal load based on the thermal load of the load calculation unit (13);
An air conditioner selection device comprising: a selection unit (18) for selecting an air conditioner having the lowest energy consumption among the air conditioners temporarily selected by the temporary selection unit (14). In claim 5,
An energy consumption calculation unit (15) for calculating the energy consumption of the air conditioner temporarily selected by the temporary selection unit (14) based on at least the thermal load of the load calculation unit (13);
The selection unit (18) selects an air conditioner having the lowest energy consumption calculated by the energy consumption calculation unit (15). In claim 5,
A load occurrence frequency calculation unit (19) for calculating the occurrence frequency of the partial thermal load of the building based on the heat load of the load calculation unit (13);
In the air conditioner temporarily selected by the temporary selection unit (14), the selection unit (18) has a partial load factor at which the COP is the same as or coincides with the peak load factor of the occurrence frequency of the partial thermal load of the building. An air conditioner selection device characterized by selecting the closest air conditioner. A building information input unit (12) for inputting information of the building where the air conditioner is installed;
A load calculation unit (13) that calculates the thermal load of the building based on the information of the building information input unit (12);
A temporary selection unit (14) for temporarily selecting an air conditioner having a capacity that can cover the design thermal load based on the thermal load of the load calculation unit (13);
An energy consumption calculation unit (15) for calculating energy consumption of the air conditioner temporarily selected by the temporary selection unit (14) based on at least the thermal load of the load calculation unit (13);
A cost calculation unit (16) for calculating the life cycle cost of the temporarily selected air conditioner based on at least the energy consumption calculated by the energy consumption calculation unit (15);
A selection unit (18) for selecting an air conditioner having the lowest life cycle cost calculated by the cost calculation unit (16) among the air conditioners temporarily selected by the temporary selection unit (14); A featured air conditioner selection device. A load calculating means for calculating a thermal load of the building based on information of a building in which the air conditioner is installed, a temporary selecting means for temporarily selecting an air conditioner having a capacity capable of covering a design heat load based on the thermal load; A program for selecting an air conditioner, wherein the energy consumption of the temporarily selected air conditioner is calculated based on at least the heat load of the building and functions as a selection means for selecting an air conditioner with the lowest energy consumption. A load calculating means for calculating a thermal load of the building based on information of a building in which the air conditioner is installed, a temporary selecting means for temporarily selecting an air conditioner having a capacity capable of covering a design heat load based on the thermal load; A load occurrence frequency calculating means for calculating an occurrence frequency of the partial heat load of the building based on the heat load of the building; and the partial load rate at which the COP is maximized among the temporarily selected air conditioners is the partial heat load of the building An air conditioner selection program that functions as a selection means for selecting an air conditioner that coincides with or is closest to the peak load rate of the occurrence frequency. A load calculating means for calculating a thermal load of the building based on information of a building in which the air conditioner is installed, a temporary selecting means for temporarily selecting an air conditioner having a capacity capable of covering a design heat load based on the thermal load; Energy calculating means for calculating the energy consumption of the temporarily selected air conditioner based on at least the thermal load of the building, cost calculating means for calculating the life cycle cost of the temporarily selected air conditioner based on at least the energy consumption, An air conditioner selection program that functions as a selection means for selecting an air conditioner having the lowest life cycle cost among the temporarily selected air conditioners.

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