JP6687043B2 - Air conditioning equipment selection system - Google Patents

Description

  Air conditioning equipment selection system for selecting an air conditioning equipment having an indoor unit and an outdoor unit

  Patent Document 1 (Japanese Patent Laid-Open No. 2002-115886) discloses that a heat load of a building is calculated and a device that constitutes an air conditioning facility installed in the building is selected based on the calculation result. There is.

  However, when the equipment is selected only based on the guidelines of the Ministry of Land, Infrastructure, Transport and Tourism regarding the capacity correction of the equipment due to the outside air temperature and the like, a situation may occur in which equipment with excessive specifications is selected.

The air conditioner selection system according to the first aspect is a system that has an indoor unit and an outdoor unit and selects an air conditioner that air-conditions each target space. This system includes an acquisition unit, a selection unit, and a storage unit. The acquisition unit acquires the calculation result of the heat load in each target space. The selection unit selects an air conditioner capable of processing the heat load in each target space based on the calculation result acquired by the acquisition unit. The storage unit stores unique information of the air conditioning equipment. The selection unit selects the air conditioner using the unique information stored in the storage unit. The selection unit selects an indoor unit having the ability to handle the heat load in each target space, and selects an outdoor unit having a capacity equal to or greater than the total capacity of the selected indoor units in each target space. The selection unit calculates correction values for the capacity of the indoor unit and the capacity of the outdoor unit using the unique information, and selects the indoor unit and the outdoor unit based on the correction values.

  The air conditioning equipment selection system according to the first aspect suppresses a situation in which an air conditioning equipment having an excessive specification is selected.

  The air conditioner selection system according to the second aspect is the system according to the first aspect, and the storage unit stores unique information that differs depending on the type of the air conditioner.

  The air conditioner selection system according to the third aspect is the system according to the first aspect or the second aspect, and the storage unit stores different unique information according to the horsepower of the compressor of the outdoor unit.

  The air conditioner selection system according to the fourth aspect is the system according to any one of the first aspect to the third aspect, and the storage unit stores different unique information depending on the capacity of the heat exchanger of the indoor unit.

  The air conditioner selection system according to the fifth aspect is the system according to any one of the first to fourth aspects, further including an input unit that receives an input of the type of the air conditioner. Further, the selection unit selects the air conditioner by using the unique information corresponding to the type of the air conditioner received by the input unit.

  The air conditioner selection system of the fifth aspect simplifies the work of selecting air conditioners.

Air conditioning equipment selection system according to the sixth aspect, the first aspect the system of any of the fifth aspect, the selection unit, the temperature of the space where the outdoor unit is installed, and, at least one of the temperature of the target space The correction value is calculated using the unique information by

Conditioning equipment selection system of the seventh aspect, the first aspect the system of any of the sixth aspect, the selection unit, the length of the refrigerant pipe connecting the indoor unit and the outdoor unit, and an indoor unit and an outdoor The correction value is calculated using the unique information based on at least one of the height difference from the unit.

Conditioning equipment selection system of the eighth aspect, the first aspect the system of any of the seventh aspect, obtaining unit, selects a ventilator for ventilating the respective target space, the ability of the selected ventilator Use to obtain the calculation result.

It is a schematic diagram showing an example of composition of building 90 in which air-conditioning equipment 10 is installed. It is a block diagram of the air conditioning equipment selection system 100. 4 is a flowchart showing a process in which a designer selects an air conditioner 10 using the air conditioner selection system 100. 6 is an example of a screen for selecting types of the indoor unit 20 and the outdoor unit 30. 5 is a display example when the system selection unit 81 in FIG. 4 is clicked. It is a display example when the frequency selection part 82 of FIG. 4 is clicked. It is a display example when the outdoor unit model selection unit 83 in FIG. 4 is clicked. It is a display example when the indoor unit type selection unit 85 of FIG. 4 is clicked. 6 is a flowchart showing detailed processing of step S3 of FIG. 4. It is a graph which shows an example of amendment of the capacity (cooling capacity) of outdoor unit 30 by outside temperature. 7 is a graph showing an example of correction of the capacity (cooling capacity) of the indoor unit 20 and the outdoor unit 30 according to the indoor suction temperature. It is a graph which shows an example of correction | amendment of the capacity | capacitance (cooling capacity) of the outdoor unit 30 by a refrigerant | coolant equivalent piping length and unit height difference. 8 is a table showing an example of a selection process of the indoor unit 20 and the outdoor unit 30. 4 is a table showing an example of information regarding the selection result of the air conditioning equipment 10.

(1) Overall Configuration The air conditioning equipment selection system 100 is used to select the air conditioning equipment 10 having the indoor unit 20 and the outdoor unit 30. The air conditioner 10 to be selected is a so-called multi air conditioning system for buildings. FIG. 1 is a schematic diagram showing an example of the configuration of a building 90 in which the air conditioner 10 is installed. The building 90 is a relatively large facility such as an office building, a school and a hospital. The air conditioner 10 is mainly composed of a plurality of indoor units 20 installed in each room of the building 90 and an outdoor unit 30 installed on the roof of the building 90 or the like. The outdoor unit 30 is connected to the plurality of indoor units 20 via a refrigerant pipe 40. Hereinafter, the space in which the indoor unit 20 is installed and which is the target of air conditioning by the air conditioner 10 is referred to as a target space 92. One indoor unit 20 may be installed in each target space 92 of the building 90, or a plurality of indoor units 20 may be installed. In addition, one air conditioning device 10 is installed in the building 90 for each air conditioning system. When a plurality of air conditioners 10 are installed in the building 90, the plurality of indoor units 20 belonging to different air conditioners 10 do not air-condition the same target space 92.

  The air conditioning equipment selection system 100 is used in the design work of air conditioning equipment installed in the building 90. The air-conditioning facility design work mainly includes a system selection stage, a device selection stage, and an air conditioning pipe selection stage. At the system selection stage, the air conditioning system of the building 90 is selected. At the device selection stage, the indoor unit 20, the outdoor unit 300, and the ventilation device installed in the building 90 are selected, and the arrangement of these devices is determined. In the air conditioning pipe selection stage, the refrigerant pipe 40 installed in the building 90 is selected, and the refrigerant filling amount of the air conditioning equipment 10 is calculated. The air conditioning equipment selection system 100 is used to select an appropriate air conditioning equipment 10 according to the heat load of each target space 92 in the equipment selection stage.

  The air conditioning equipment selection system 100 is mainly used by a person in charge at the equipment selection stage in the design work of air conditioning equipment (hereinafter, simply referred to as “designer”). The air conditioning equipment selection system 100 is mainly composed of a terminal used by a designer and a server connected to the terminal via a network. The server stores a program for selecting the air conditioner 10 according to the heat load of each target space 92, and data necessary for executing the program. The designer can select the air conditioner 10 by operating his / her terminal to log in to the server and executing the program stored in the server.

(2) Detailed Configuration FIG. 2 is a block diagram of the air conditioning equipment selection system 100. The air conditioning equipment selection system 100 mainly includes an air conditioning equipment information storage unit 101, a heat load information input unit 102, a heat load acquisition unit 103, an air conditioning equipment selection unit 104, a unique information storage unit 105, and an air conditioning equipment information input. And a unit 106. These are programs or data stored in the storage device of the server or the like.

  The air conditioning equipment information storage unit 101 stores information (specifications) about the air conditioning equipment 10 that is the selection target. Specifically, the air conditioner information storage unit 101 stores the capacity (capacity) of the heat exchanger, the power consumption, the partial load characteristics, the price, the service life, etc. for the plurality of types of indoor units 20, Compressor horsepower (capacity), power consumption, partial load characteristics, price, service life, etc. are stored for each type of outdoor unit 30. The air conditioner information storage unit 101 may be able to input new information at any time.

  The heat load information input unit 102 receives input of information necessary for calculating the heat load of each target space 92 of the building 90. Specifically, the heat load information input unit 102 receives information about the building 90, weather conditions, and the like. The information about the building 90 is the structure, such as the wall, the window, the ceiling, and the floor of the target space 92 that is the target of heat load calculation, the thermal characteristics, and the area. Further, the solar radiation load, the internal heat generation amount, the number of people in the room, the ventilation amount, the indoor temperature condition, the outdoor temperature condition, and the like of the target space 92 are input as the information regarding the building 90. The meteorological condition refers to the area where the air conditioner 10 is installed, and is, for example, annual meteorological data such as temperature, humidity, and the amount of solar radiation in an hour unit.

  The heat load acquisition unit 103 calculates the heat load (maximum heat load) of each target space 92 of the building 90 based on the information received by the heat load information input unit 102, and acquires the calculation result. Details of the heat load calculation process by the heat load acquisition unit 103 will be described later.

  The air conditioner selection unit 104, based on the calculation result of the heat load of each target space 92 acquired by the heat load acquisition unit 103 from the air conditioner 10 that is the selection target stored in the air conditioner information storage unit 101. The air conditioner 10 that can handle the heat load in each target space 92 is selected. Specifically, the air conditioning equipment selection unit 104 selects the indoor unit 20 and the outdoor unit 30 having the capacity equal to or higher than the heat load calculated by the heat load acquisition unit 103. Details of the process of selecting the air conditioner 10 by the air conditioner selecting unit 104 will be described later.

  The unique information storage unit 105 stores unique information of the air conditioner 10 that is the selection target. The unique information of the air conditioner 10 is information that differs depending on the type of the air conditioner 10, specifically, the models of the indoor unit 20 and the outdoor unit 30, and when the air conditioner selecting unit 104 selects the air conditioner 10. Information used for. More specifically, the unique information of the air conditioner 10 is information that differs according to the horsepower of the compressor of the outdoor unit 30 and information that differs according to the capacity of the heat exchanger of the indoor unit 20. Details of the unique information of the air conditioner 10 will be described later.

  The air conditioning equipment information input unit 106 receives an input of the type of the air conditioning equipment 10 to be selected. The type of the air conditioner 10 is the type of the indoor unit 20 and the outdoor unit 30 that form the air conditioner 10. When the designer inputs the models of the indoor unit 20 and the outdoor unit 30 to his / her terminal, the air conditioner selection unit 104 combines the indoor unit 20 and the outdoor unit 30 that form the air conditioner 10 based on the input models. Is automatically selected. Details of the model input operation by the air conditioner information input unit 106 will be described later.

(3) Overall Operation FIG. 3 is a flowchart showing a process in which the designer selects the air conditioner 10 using the air conditioner selection system 100. In this process, first, the heat load is calculated in step S1. Specifically, in step S1, the heat load acquisition unit 103 calculates the heat load of each target space 92 of the building 90 and acquires the calculation result. The data used to calculate the heat load is input in advance by the designer or the like using the heat load information input unit 102 and stored in the server or the like. The heat load acquisition unit 103 acquires the final calculation result of the heat load for each target space 92 based on the total of the indoor load (wall load) and the outside air load. The heat load acquisition unit 103 calculates the cooling load, which is the heat load during the cooling operation, and the heating load, which is the heat load during the heating operation.

  Next, in step S2, the types of the indoor unit 20 and the outdoor unit 30 are selected. Specifically, in step S2, the designer operates his / her terminal to use the air conditioning equipment information input unit 106, for each air conditioning system of the building 90, the model of the outdoor unit 30 and each target space. The model of the indoor unit 20 installed in 92 is selected. FIG. 4 is an example of a selection screen 80 displayed on the display of the terminal operated by the designer and used to select the types of the indoor unit 20 and the outdoor unit 30. The selection screen 80 shown in FIG. 4 mainly includes a system selection unit 81, a frequency selection unit 82, an outdoor unit model selection unit 83, a target space information display unit 84, an indoor unit model selection unit 85, and piping. A length input section 86 and a height difference input section 87 are displayed. The functions of these interfaces will be described later.

  Next, in step S3, the air conditioning equipment 10 is selected. Specifically, in step S3, the air conditioning equipment selection unit 104 calculates the heat load of each target space 92 acquired in step S1, and the indoor unit 20 and the outdoor unit selected by the designer in step S2. Based on the model of 30, the combination of the indoor unit 20 and the outdoor unit 30 forming the air conditioner 10 is automatically selected. Detailed processing of step S3 will be described later.

  Finally, in step S4, the selection result of the air conditioning equipment 10 is displayed. Specifically, in step S4, the information regarding the indoor unit 20 and the outdoor unit 30 selected in step S3 is displayed on the display of the designer's terminal. Based on the displayed selection result of the indoor unit 20 and the outdoor unit 30, the designer makes a final decision of the air conditioner 10 installed in the building 90, and plans the arrangement of the indoor unit 20 and the outdoor unit 30. .

  Here, the function of each interface of the selection screen 80 shown in FIG. 4 will be described. The system selection unit 81 is a pull-down menu for selecting the air conditioning system of the building 90. FIG. 5 is a display example when the designer clicks on the system selection unit 81 in FIG. As shown in FIG. 5, the air conditioning system to be selected is displayed as a character string representing the name of the air conditioning system. In step S2, the designer selects one air conditioning system from the list of air conditioning systems as shown in FIG.

  The frequency selection unit 82 is a pull-down menu for selecting an AC power supply frequency in the area where the building 90 is installed. FIG. 6 is a display example when the designer clicks the frequency selection unit 82 in FIG. As shown in FIG. 6, the frequency to be selected is 50 Hz or 60 Hz in Japan. In step S2, the designer selects one frequency from the list of frequencies as shown in FIG.

  The outdoor unit model selection unit 83 is a pull-down menu for selecting the model of the outdoor unit 30 installed in the building 90 in the air conditioning system selected by the system selection unit 81. FIG. 7 is a display example when the designer clicks on the outdoor unit type selection unit 83 in FIG. As shown in FIG. 7, the outdoor unit 30 to be selected is displayed in a character string representing the model. In step S2, the designer selects one type from the type list of the outdoor unit 30 as shown in FIG.

  The target space information display unit 84 is an area in which information about all target spaces 92 in the air conditioning system selected by the system selection unit 81 is displayed. Specifically, as shown in FIG. 4, the target space information display unit 84 displays a “room symbol”, a “room name”, a “model”, and a “number” for each target space 92. The room symbol is a symbol (ID) for uniquely identifying the target space 92. The room name is the name of the target space 92. The room name is displayed as, for example, a character string indicating a specific usage method of the target space 92 so that the designer can easily distinguish it. The model is a character string representing the model of the indoor unit 20 installed in the target space 92. The number of units is the number of indoor units 20 installed in the target space 92. “Model” and “number” are items that can be changed by the designer.

  The indoor unit type selection unit 85 is a pull-down menu for selecting the type of the indoor unit 20 installed in each target space 92 of the building 90 in the air conditioning system selected by the system selection unit 81. The indoor unit model selection unit 85 is an area in the target space information display unit 84 where the “model” of each target space 92 is displayed. FIG. 8 is a display example when the designer clicks the indoor unit type selection unit 85 in FIG. As shown in FIG. 8, the indoor unit 20 that is the selection target is displayed as a character string representing the model. In step S2, the designer selects one type for each target space 92 from the type list of the indoor unit 20 as shown in FIG.

  The pipe length input unit 86 is an area for inputting the length of the refrigerant pipe 40 of the air conditioner 10 in the air conditioning system selected by the system selection unit 81.

  The height difference input unit 87 is an area for inputting a height difference between the indoor unit 20 and the outdoor unit 30 in the air conditioning system selected by the system selection unit 81.

  In step S2, after the designer inputs necessary data on the selection screen 80 and then clicks the "start selection" button at the bottom of the screen, the air conditioner selection unit 104 starts selection of the air conditioner 10 in step S3. .

(4) Detailed Operation Next, details of the selection process of the air conditioning equipment 10 (combination of the indoor unit 20 and the outdoor unit 30) by the air conditioning equipment selection unit 104 will be described. FIG. 9 is a flowchart showing the detailed processing of step S3 of FIG. First, in step S31, provisional selection of the indoor unit 20 installed in each target space 92 is performed. Specifically, the air conditioning equipment selection unit 104 provisionally selects the indoor unit 20 that matches the heat load of each target space 92 based on the calculation result of the heat load acquired in step S1. The tentative selection of the indoor unit 20 is performed from the indoor units 20 that match the model selected by the designer in step S2. At the time of temporary selection, the information about the air conditioner 10 stored in the air conditioner information storage unit 101 is referred to.

  Next, in step S32, it is determined whether or not the capacities of all the indoor units 20 provisionally selected in step S31 are greater than or equal to the heat load of the target space 92 in which the indoor unit 20 is installed. If the capacity of the at least one provisionally selected indoor unit 20 is not greater than or equal to the heat load of the target space 92 in which the indoor unit 20 is installed, it means that the indoor unit 20 cannot properly air-condition the target space 92. In this case, since the indoor unit 20 that can handle the heat load of the target space 92 does not exist among the indoor units 20 that match the type selected by the designer in step S2, the process of step S3 ends, and the step In step S2, the designer is made to reselect the model of the indoor unit 20. If the tentatively selected capabilities of all the indoor units 20 are equal to or higher than the heat load of the target space 92 in which the indoor unit 20 is installed, the process proceeds to step S33. In step S32, the cooling capacity and the heating capacity of the indoor unit 20 are determined. That is, when the cooling capacity of the indoor unit 20 is equal to or higher than the cooling load of the target space 92 and the heating capacity of the indoor unit 20 is equal to or higher than the heating load of the target space 92, the capacity of the indoor unit 20 is the target. It is determined that the heat load on the space 92 is not less than the heat load.

  Next, in step S33, the total capacity of all the indoor units 20 provisionally selected in step S31 is calculated. Specifically, in step S33, the total cooling capacity of all the indoor units 20 and the total heating capacity of all the indoor units 20 are calculated.

  Next, in step S34, the temporary selection of the outdoor unit 30 is performed. Specifically, the air conditioning equipment selection unit 104 provisionally selects the outdoor unit 30 having a capacity equal to or greater than the total capacity of all the indoor units 20 calculated in step S33. In step S34, the outdoor unit 30 having the cooling capacity equal to or higher than the total cooling capacity of all the indoor units 20 and having the heating capacity equal to or higher than the total heating capacity of all the indoor units 20 is selected.

  Next, in step S35, the correction values of the capacities of all the indoor units 20 provisionally selected in step S31 and the correction values of the capacities of the outdoor units 30 provisionally selected in step S34 are calculated. The air conditioner selection unit 104 uses the unique information of the air conditioner 10 stored in the unique information storage unit 105 to calculate the correction value of the capacity of the indoor unit 20 and the outdoor unit 30. The correction values of the capacities of the indoor unit 20 and the outdoor unit 30 are calculated by the correction by the outside air temperature, the correction by the indoor suction temperature, and the correction by the refrigerant piping parameter. The correction values for the capabilities of the indoor unit 20 and the outdoor unit 30 may be calculated by a part of these three corrections. Details of the correction of the capabilities of the indoor unit 20 and the outdoor unit 30 will be described later. In step S35, a correction value is calculated for each of the cooling capacity and the heating capacity of the indoor unit 20 and the outdoor unit 30.

  Next, in step S36, it is determined whether or not the correction value of the capacity of the outdoor unit 30 calculated in step S35 is greater than or equal to the sum of the correction values of the capacities of all the indoor units 20. If the correction value of the capacity of the outdoor unit 30 is greater than or equal to the total correction value of the capacity of the indoor unit 20, the process proceeds to step S37, and if not, the process proceeds to step S34 and the temporary selection of the outdoor unit 30 is performed again. Be seen. In step S36, the correction value of the cooling capacity of the outdoor unit 30 is greater than or equal to the sum of the correction values of the cooling capacity of all the indoor units 20, and the correction value of the heating capacity of the outdoor unit 30 is all indoors. When it is equal to or more than the total correction value of the heating capacity of the unit 20, it is determined that the correction value of the capacity of the outdoor unit 30 is equal to or more than the total correction value of the capacity of the indoor unit 20.

  Finally, in step S37, it is determined whether or not the correction values of the capacities of all the indoor units 20 calculated in step S35 are equal to or higher than the heat load of the target space 92 in which the indoor unit 20 is installed. If the correction value of the capacity of at least one indoor unit 20 is not greater than or equal to the thermal load of the target space 92 in which the indoor unit 20 is installed, it means that the indoor unit 20 cannot properly air-condition the target space 92. In this case, since the indoor unit 20 that can handle the heat load of the target space 92 does not exist among the indoor units 20 that match the type selected by the designer in step S2, the process of step S3 ends, and the step In step S2, the designer is made to reselect the model of the indoor unit 20. If the correction values of the capacities of all the indoor units 20 are equal to or higher than the heat load of the target space 92 in which the indoor unit 20 is installed, the selection process of step S3 ends normally, and the process proceeds to step S4. That is, all the indoor units 20 provisionally selected in step S31 and the outdoor units 30 provisionally selected in step S34 become the final selection result by the air conditioning equipment selection unit 104. In step S37, the respective correction values of the cooling capacity and the heating capacity of the indoor unit 20 are determined. That is, when the correction value of the cooling capacity of the indoor unit 20 is equal to or higher than the cooling load of the target space 92 and the correction value of the heating capacity of the indoor unit 20 is equal to or higher than the heating load of the target space 92, the indoor unit It is determined that the correction value of the capacity of 20 is greater than or equal to the heat load of the target space 92.

  Here, the details of the correction of the capabilities of the indoor unit 20 and the outdoor unit 30 in step S35 of FIG. 9 will be described with reference to FIGS. In the following, the correction of the capacities of the indoor unit 20 and the outdoor unit 30 means both the correction of the cooling capacity and the correction of the heating capacity.

  First, correction of the capacity of the outdoor unit 30 based on the outside air temperature will be described. The outside air temperature is the temperature of the space (outdoor) in which the outdoor unit 30 is installed. FIG. 10 is a graph showing an example of correction of the capacity (cooling capacity) of the outdoor unit 30 according to the outside air temperature. The horizontal axis of the graph in FIG. 10 represents the outside air temperature (dry-bulb temperature), and the vertical axis represents the correction coefficient of the capacity. A value obtained by multiplying the original capacity of the outdoor unit 30 by the correction coefficient becomes the capacity correction value. FIG. 10 shows that the correction coefficient tends to decrease as the outside air temperature rises. The data on the change in the correction coefficient with respect to the outside air temperature shown in FIG. 10 is unique information of the air conditioning equipment 10, which differs depending on the type of the air conditioning equipment 10. That is, the method of changing the correction coefficient with respect to the outside air temperature differs depending on the type of the air conditioner 10. In step S35, when the correction value of the capacity of the outdoor unit 30 based on the outside air temperature is calculated, the correction coefficient included in the unique information that differs depending on the type of the air conditioner 10 is used. Since the correction coefficient may differ depending on the type of the air conditioner 10, the correction value of the capacity of the outdoor unit 30 may differ depending on the type of the air conditioner 10. Note that the unique information that differs depending on the horsepower of the compressor of the outdoor unit 30 is used to correct the capacity of the outdoor unit 30 based on the outside air temperature. In this case, the correction value of the capacity of the outdoor unit 30 may differ depending on the horsepower of the compressor of the outdoor unit 30. What is described as "may be different" does not necessarily mean that the unique information (correction coefficient of capacity) is also different if the type of the air conditioner 10 or the horsepower of the compressor of the outdoor unit 30 is different. It means that. The same applies to other corrections.

  Here, the reason why the correction coefficient differs depending on the type of the air conditioner 10 will be described. Normally, the outdoor unit 30 has a lineup of products corresponding to several types of horsepower (horsepower of a compressor). However, even if the horsepower is different, the mounted heat exchanger may have the same or different capacity, and / or the mounted compressor may have the same or different cylinder capacity. For example, it is assumed that the outdoor unit 30 corresponding to six types of horsepower is lined up. At this time, there are three types of capacities of the heat exchangers mounted in the outdoor unit 30, and the capacities are referred to as a heat exchanger A, a heat exchanger B, and a heat exchanger C in ascending order. Further, there are three types of cylinder capacities of the compressors installed in the outdoor unit 30, and they are referred to as a compressor X, a compressor Y, and a compressor Z in ascending order of cylinder capacity. In this case, the heat exchanger A is mounted on the outdoor unit 30 having the smallest horsepower and the second smallest horsepower, and the heat exchanger B has the third smallest horsepower, the fourth smallest horsepower and the second largest horsepower. It is assumed that the heat exchanger C is mounted on the outdoor unit 30, and the heat exchanger C is mounted on the outdoor unit 30 having the largest horsepower. The compressor X is mounted on the outdoor unit 30 having the smallest horsepower and the second smallest horsepower, and the compressor Y is mounted on the outdoor unit 30 having the third smallest horsepower and the fourth smallest horsepower. It is assumed that Z is mounted on the outdoor unit 30 having the second largest horsepower and the largest horsepower. Such an example of the combination of the heat exchanger and the compressor mounted in the outdoor unit 30 is common in the air conditioning equipment 10 that is commercially available as a general-purpose product. Thus, depending on the horsepower of the compressor of the outdoor unit 30, the mounted heat exchanger may have the same or different capacity, and / or the mounted compressor may have the same or different cylinder capacity. Therefore, even if the outside air temperature is the same, the operating condition for the most energy-saving operation of the outdoor unit 30 may differ for each horsepower of the compressor. As a result, the correction coefficient (or the correction value of the capacity of the outdoor unit 30) varies depending on the type of the air conditioner 10. In other words, the outdoor unit 30 has a heat exchanger and a compressor, and the unique information that differs depending on the combination of the capacity of the heat exchanger and the cylinder capacity of the compressor that corresponds to the horsepower of the compressor of the outdoor unit 30. It is stored in the unique information storage unit 105.

  Next, correction of the capacity of the indoor unit 20 based on the indoor suction temperature will be described. The indoor suction temperature is the temperature of the target space 92 in which the indoor unit 20 is installed. The indoor suction temperature is the temperature (wet bulb temperature) of the air-conditioned target space 92 set by the user or the like of the target space 92. FIG. 11 is a graph showing an example of correction of the capacity (cooling capacity) of the indoor unit 20 according to the indoor suction temperature. The horizontal axis of the graph in FIG. 11 represents the indoor suction temperature, and the vertical axis represents the capacity correction coefficient. The data on the change in the correction coefficient with respect to the indoor intake temperature shown in FIG. 11 is unique information of the air conditioning equipment 10, which differs depending on the type of the air conditioning equipment 10. That is, the method of changing the correction coefficient with respect to the indoor intake temperature differs depending on the type of the air conditioner 10. In step S35, when the correction value of the capacity of the indoor unit 20 based on the indoor suction temperature is calculated, the correction coefficient included in the unique information that differs depending on the type of the air conditioner 10 is used. Since the correction coefficient may differ depending on the type of the air conditioner 10, the correction value of the capacity of the indoor unit 20 may differ depending on the type of the air conditioner 10. Note that, for correcting the capacity of the indoor unit 20 based on the indoor suction temperature, unique information that differs depending on the capacity of the heat exchanger of the indoor unit 20 is used, for example. In this case, the correction value of the capacity of the indoor unit 20 may differ depending on the capacity of the heat exchanger of the indoor unit 20. Similar to the outdoor unit 30, the indoor unit 20 has a lineup of products corresponding to several types of horsepower. Since the type of heat exchanger installed in the indoor unit 20 may be smaller than the type of lineup of the indoor unit 20, the installed heat exchanger has the same capacity depending on the type of the indoor unit 20. Or it may be different. Therefore, even if the indoor suction temperature is the same, the operating condition for the most energy-saving operation of the indoor unit 20 may differ for each type. As a result, the correction coefficient (or the correction value of the capacity of the indoor unit 20) varies depending on the type of the air conditioner 10.

  Next, correction of the capacity of the outdoor unit 30 based on the refrigerant piping parameters will be described. In this correction, both the refrigerant equivalent pipe length that is the length of the refrigerant pipe 40 that connects the indoor unit 20 and the outdoor unit 30 and the unit height difference that is the height difference between the indoor unit 20 and the outdoor unit 30 are used. However, only one may be used. The unit height difference is the height position of the outdoor unit 30 with reference to the height position of the indoor unit 20. That is, when the outdoor unit 30 is at a position higher than the indoor unit 20, the unit height difference has a positive value, and when it is at a lower position, the unit height difference has a negative value. As the refrigerant equivalent pipe length data, the numerical value input to the pipe length input unit 86 of the selection screen 80 shown in FIG. 4 is used. As the unit height difference data, the numerical value input to the height difference input section 87 of the selection screen 80 shown in FIG. 4 is used.

  FIG. 12 is a graph showing an example of correction of the capacity (cooling capacity) of the outdoor unit 30 based on the refrigerant equivalent pipe length and the unit height difference. The horizontal axis of the graph in FIG. 12 represents the refrigerant equivalent pipe length, and the vertical axis represents the unit height difference. In FIG. 12, the correction coefficient of the capability is discretely represented by a plurality of straight lines. For example, at a place where a straight line of 0.90 passes, the ability correction coefficient is 0.90. The data regarding the change in the correction coefficient for the refrigerant equivalent pipe length and the unit height difference shown in FIG. 12 is unique information of the air conditioner 10, which differs depending on the type of the air conditioner 10. That is, the method of changing the correction coefficient for the refrigerant equivalent pipe length and the unit height difference differs depending on the type of the air conditioner 10. In step S35, when the correction value of the capacity of the outdoor unit 30 based on the refrigerant equivalent pipe length and the unit height difference is calculated, the correction coefficient included in the unique information that differs depending on the type of the air conditioner 10 is used. Since the correction coefficient may differ depending on the type of the air conditioner 10, the correction value of the capacity of the outdoor unit 30 may differ depending on the type of the air conditioner 10. For correcting the capacity of the outdoor unit 30 based on the refrigerant equivalent pipe length and the unit height difference, for example, different unique information is used depending on the horsepower of the compressor of the outdoor unit 30. In this case, the correction value of the capacity of the outdoor unit 30 may differ depending on the horsepower of the compressor of the outdoor unit 30. As described above, in the outdoor unit 30, depending on the horsepower of the compressor, the mounted heat exchanger may have the same or different capacity, and / or the mounted compressor may have the same or different cylinder capacity. is there. Therefore, for example, even if the number of rotations of the compressor is the same, the capacity of the heat exchanger is different, so that the pressure loss at the outlet of the heat exchanger may differ for each horsepower of the compressor. As a result, the correction coefficient based on the refrigerant equivalent pipe length and the unit height difference (or the correction value of the capacity of the outdoor unit 30) varies depending on the horsepower of the compressor of the outdoor unit 30.

  The flowchart shown in FIG. 9 is an example of an algorithm for selecting the indoor unit 20 and the outdoor unit 30, and other algorithms are included as long as they include at least the processes corresponding to step S36 and step S37 of FIG. The indoor unit 20 and the outdoor unit 30 may be selected according to.

  FIG. 13 is a table showing an example of selection processing of the indoor unit 20 and the outdoor unit 30. FIG. 13 is based on three heat correction coefficients used to calculate the heat load (cooling load and heating load) of the target space and the correction values of the abilities (cooling ability and heating ability) of the indoor unit 20 and the outdoor unit 30. A process of selecting the indoor unit 20 and the outdoor unit 30 is shown. The three correction coefficients are a correction coefficient K1 for correcting the capacity by the outside air temperature, a correction coefficient K2 for correcting the capacity by the indoor suction temperature, and a correction coefficient K3 for correcting the capacity by the refrigerant piping parameter. is there. The correction coefficients K1, K2, K3 are set for each of the cooling time and the heating time as described below the table of FIG. In FIG. 13, the models and capacities of the indoor unit 20 and the outdoor unit 30 selected by the air conditioning equipment selecting unit 104 are described in the columns of “selected indoor unit” and “selected outdoor unit”, respectively. .

  In FIG. 13, in the column of "capacity required for indoor unit", the minimum capacity required for the indoor unit 20 to appropriately air-condition the target space 92, which is calculated from the heat load of the target space 92, is described. ing. This capability is calculated by dividing the heat load (cooling load L1 and heating load L2) of the target space 92 by the correction coefficient K1. This is because the value obtained by multiplying the capacity of the indoor unit 20 (cooling capacity C1 and heating capacity C2) by the correction coefficient K1 is the correction value of the capacity of the indoor unit 20, and this correction value is the heat load L1, L2 of the target space 92. This is because the above is required. The air conditioning equipment selection unit 104 selects, for each target space 92, the indoor unit 20 having a capacity that is at least the minimum capacity required for the indoor unit 20. This process corresponds to step S37 in FIG.

  In FIG. 13, in the column of “capacity required for outdoor unit”, the minimum required capacity of the outdoor unit 30 calculated from the capacity of the indoor unit 20 selected previously is described. This capacity is calculated by dividing the total capacity (cooling capacity C1 and heating capacity C2) of the selected indoor unit 20 by the correction coefficient K2 and the correction coefficient K3. This is because the value obtained by multiplying the capacity of the outdoor unit 30 by the correction coefficient K2 and the correction coefficient K3 is the correction value of the capacity of the outdoor unit 30, and this correction value is greater than or equal to the total capacity of the selected indoor units 20. It is necessary. The air conditioner selection unit 104 selects the outdoor unit 30 having a capacity equal to or higher than the minimum required capacity of the outdoor unit 30. This process corresponds to step S36 in FIG.

  FIG. 14 is a table showing an example of information regarding the selection result of the air conditioner 10. When the selection of the combination of the indoor unit 20 and the outdoor unit 30 by the air conditioning equipment selection unit 104 is completed in step S3 of FIG. 3, the selection result as shown in FIG. 14 is displayed by the designer's terminal in step S4 of FIG. Displayed on the display etc. In FIG. 14, information regarding the selected indoor unit 20 and outdoor unit 30 is shown for each air conditioning system.

(5) Features (5-1)
Conventionally, a method of selecting an air conditioner installed in a building based on the calculation result of the heat load of the building has been used. However, in the conventional selection method, the capacity of the air conditioner is corrected by the outside air temperature or the like only by one method described in the guidelines prescribed by the Ministry of Land, Infrastructure, Transport and Tourism. In this case, the correction value of the capacity of the air conditioner is a value that does not depend on the type of the air conditioner, specifically, the horsepower of the compressor of the outdoor unit and the capacity of the heat exchanger of the indoor unit. Therefore, depending on the type of the air conditioner, the correction value of the capacity of the air conditioner may greatly exceed the heat load of the building, and as a result, a situation may occur in which an air conditioner with excessive specifications is selected.

  When selecting the air conditioning equipment 10 installed in the building 90, the air conditioning equipment selection system 100 performs air conditioning based on the unique information of the air conditioning equipment 10 in addition to the calculation result of the heat load of each target space 92 of the building 90. A combination of the indoor unit 20 and the outdoor unit 30 that form the device 10 is selected. Specifically, the air conditioning equipment selection unit 104 corrects the capacities of the indoor unit 20 and the outdoor unit 30 based on the unique information of the air conditioning equipment 10, and conforms to the model selected by the designer based on the corrected capacity. A combination of the indoor unit 20 and the outdoor unit 30 is selected from the indoor unit 20 and the outdoor unit 30 to be operated. The selected indoor unit 20 can process the heat load of the target space 92 in which the indoor unit 20 is installed. The selected outdoor unit 30 has a capacity equal to or larger than the total capacity of all the selected indoor units 20. Since the air conditioner selection unit 104 selects the indoor unit 20 and the outdoor unit 30 based on the capacity (cooling capacity and heating capacity) that is appropriately corrected using the unique information of the air conditioner 10, for example, the selected room It is suppressed that the correction value of the capacity of the unit 20 greatly exceeds the heat load of the target space 92 in which the indoor unit 20 is installed.

  Therefore, the air conditioning equipment selection system 100 can suppress the occurrence of a situation in which the air conditioning equipment 10 having an excessive specification is selected. As a result, the air conditioning equipment selection system 100 can optimize the selection of the air conditioning equipment 10 and improve the energy saving performance of the building 90 in which the air conditioning equipment 10 is installed.

(5-2)
The air conditioning equipment selection system 100 corrects the capabilities of the indoor unit 20 and the outdoor unit 30 using unique information that differs depending on the type of the air conditioning equipment 10. The unique information is specifically a correction coefficient used to correct the capabilities of the indoor unit 20 and the outdoor unit 30, as shown in FIGS. The correction coefficient differs depending on, for example, the horsepower of the compressor of the outdoor unit 30 and the capacity of the heat exchanger of the indoor unit 20. Therefore, by appropriately setting the unique information (correction coefficient) according to the horsepower of the compressor of the outdoor unit 30 and the capacity of the heat exchanger of the indoor unit 20, the air conditioning equipment selection system 100 becomes excessive. It is possible to effectively suppress the occurrence of the situation where the air conditioner 10 having the specifications is selected.

(5-3)
The air conditioning equipment selection system 100 uses the unique information of the air conditioning equipment 10 only by the designer selecting the model of the indoor unit 20 and the outdoor unit 30 installed in the building 90 on the selection screen 80 shown in FIG. , A combination of the indoor unit 20 and the outdoor unit 30 having appropriate capabilities is selected. Therefore, the air-conditioning equipment selection system 100 can automatically perform the work of selecting the air-conditioning equipment 10 without human intervention, so that the designer can simplify the work of selecting the air-conditioning equipment 10. Further, the designer can complete the selection work of the air conditioning equipment 10 only by checking the selection result as shown in FIG.

(5-4)
The air conditioning equipment selection system 100 uses the unique information of the air conditioning equipment 10 to calculate the correction values of the capacities of the indoor unit 20 and the outdoor unit 30, and corrects the outside air temperature, the indoor suction temperature, and the refrigerant piping parameters. Correction by. Therefore, the air conditioning equipment selection system 100 can appropriately correct the capacities of the indoor unit 20 and the outdoor unit 30 according to the type of the air conditioning equipment 10, so that the air conditioning equipment 10 with excessive specifications is selected. The generation can be effectively suppressed.

(6) Modified Example (6-1) Modified Example A
The air conditioning equipment selection system 100 may further select the ventilation equipment installed in the building 90. Specifically, the heat load acquisition unit 103 may select a ventilation device for ventilating each target space 92 of the building 90 and acquire the calculation result of the heat load using the capacity of the selected ventilation device. . In this case, the heat load acquisition unit 103 calculates the required capacity of the ventilation device based on the ventilation device system selected by the designer and the ventilation volume at the static pressure of the target space 92, and selects the ventilation device. Then, the heat load acquisition unit 103 calculates the outside air load of the target space 92 using the capacity and heat exchange efficiency of the selected ventilation device, and acquires the final calculation result of the heat load of the target space 92.

(6-2) Modification B
The air conditioning equipment selection system 100 may further correct the capacity of the outdoor unit 30 due to frost formation on the heat exchanger of the outdoor unit 30. Specifically, the air conditioning equipment selection unit 104 uses the data regarding the change in the correction coefficient with respect to the suction temperature (outdoor wet bulb temperature) of the outdoor unit 30 as the unique information that differs according to the type of the air conditioning equipment 10, and A correction value for the capacity of the unit 30 may be calculated.

(6-3) Modification C
The air conditioning equipment selection system 100 may be able to set a margin value regarding correction of the capabilities of the indoor unit 20 and the outdoor unit 30. For example, the designer sets the correction coefficient of the capacity of the indoor unit 20 so that the difference between the capacity of the indoor unit 20 and the heat load of the target space 92 in which the indoor unit 20 is installed becomes a predetermined value or more. Thus, the air conditioning equipment selection system 100 may be configured.

(6-4) Modification D
The air conditioning equipment selection system 100 may further correct the capacity of the outdoor unit 30 based on the number of fans of the outdoor unit 30. Specifically, the air conditioner selection unit 104 corrects the capacity of the outdoor unit 30 by using the data regarding the change in the correction coefficient with respect to the number of fans of the outdoor unit 30 as the unique information that differs depending on the type of the air conditioner 10. The value may be calculated.

(6-5) Modification E
When the parameter used for selecting the air conditioner 10 is out of the predetermined range, the air conditioner selection system 100 may notify that effect and set the parameter appropriately. Examples of such parameters include the length of the refrigerant pipe 40 set on the selection screen 80 shown in FIG. 4 and the indoor suction temperature used for correcting the capacity.

(6-6) Modification F
In the air conditioning equipment selection system 100, the air conditioning equipment selection unit 104 temporarily selects the indoor unit 20 and then the outdoor unit 30. However, the air conditioner selection unit 104 may temporarily select the indoor unit 20 after temporarily selecting the outdoor unit 30. Also in this case, the indoor unit 20 and the outdoor unit 30 are selected so that both the determination processes of step S36 and step S37 of FIG. 9 are satisfied.

(6-7) Modification G
The air conditioning equipment selection system 100 includes a terminal used by a designer and a server connected to the terminal via a network. However, the air conditioning equipment selection system 100 may be configured only by a local PC that is not connected to the network. In this case, the air conditioner information storage unit 101, the heat load information input unit 102, the heat load acquisition unit 103, the air conditioner selection unit 104, the unique information storage unit 105, and the air conditioner information input unit 106 are local PCs used by the designer. Remembered in.

  Although the embodiments of the present disclosure have been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the present disclosure described in the claims. .

  The air conditioner selection system can be used to select an air conditioner having an indoor unit and an outdoor unit.

10 Air Conditioning Equipment 20 Indoor Unit 30 Outdoor Unit 40 Refrigerant Pipe 92 Target Space 100 Air Conditioning Equipment Selection System 103 Thermal Load Acquisition Section (Acquisition Section)
104 Air Conditioning Equipment Selection Section (Selection Section)
105 Unique Information Storage Unit (Storage Unit)
106 Air-conditioning equipment information input section (input section)

JP, 2002-115886, A

Claims (8)

An air conditioner selection system for selecting an air conditioner (10) that has an indoor unit (20) and an outdoor unit (30) and air-conditions each target space (92),
An acquisition unit (103) for acquiring the calculation result of the heat load in each of the target spaces,
A selection unit (104) for selecting the air conditioner capable of processing the heat load in each of the target spaces based on the calculation result acquired by the acquisition unit;
A storage unit (105) for storing the unique information of the air conditioner;
Equipped with
The selection unit selects the air conditioner using the unique information stored in the storage unit ,
The selection unit selects the indoor unit having the ability to handle the heat load in each target space, and selects the outdoor unit having a capacity equal to or greater than the total capacity of the selected indoor units in each target space. Then
The selecting unit calculates a correction value of the capacity of the indoor unit and the capacity of the outdoor unit using the unique information, and selects the indoor unit and the outdoor unit based on the correction value.
Air conditioning equipment selection system (100). The storage unit stores the unique information that is different depending on the type of the air conditioner,
The air conditioning equipment selection system according to claim 1. The storage unit stores the unique information that differs according to the horsepower of the compressor of the outdoor unit,
The air conditioning equipment selection system according to claim 1. The storage unit stores the unique information that differs according to the capacity of the heat exchanger of the indoor unit,
The air conditioning equipment selection system according to any one of claims 1 to 3. Further comprising an input unit (106) for receiving an input of the type of the air conditioner
The selecting unit selects the air conditioner using the unique information corresponding to the type of the air conditioner received by the input unit,
The air conditioning equipment selection system according to any one of claims 1 to 4. The selection unit calculates the correction value using the temperature of the space in which the outdoor unit is installed and the unique information based on at least one of the temperatures of the target spaces,
The air conditioning equipment selection system according to any one of claims 1 to 5 . The selection unit uses the unique information based on at least one of the length of the refrigerant pipe (40) connecting the indoor unit and the outdoor unit and the height difference between the indoor unit and the outdoor unit to correct the correction. Calculate the value,
The air conditioning equipment selection system according to any one of claims 1 to 6 . The acquisition unit selects a ventilation device that ventilates each of the target spaces, and acquires the calculation result by using the capacity of the selected ventilation device.
The air conditioning equipment selection system according to any one of claims 1 to 7 .

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