Air conditioning performance presentation system, presentation method, and server

Abstract

To improve accuracy of capacity of an air conditioner presented as necessary capacity.SOLUTION: The present disclosure is an air conditioning capacity presentation system that presents a capacity of an air conditioner, the air conditioning capacity presentation system including a control unit, wherein the control unit acquires power consumption of an outdoor unit of the air conditioner and an outside air temperature that is a temperature of air around the outdoor unit, determines an operation mode of the air conditioner based on the outside air temperature, and calculates the capacity of the air conditioner based on the power consumption, the outside air temperature, and the operation mode.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to an air conditioning capability presentation system, a presentation method, and a server. [Background technology]

[0002] In many cases, existing air conditioners installed in buildings have capacities greater than the actual required capacity, resulting in unnecessary power consumption. To address this issue, a technology is known that calculates and displays the required capacity for the air conditioner.

[0003] Patent Document 1 discloses a technology that detects the operating state of an air conditioner on a Mollier diagram, calculates the enthalpy difference in the indoor unit, and calculates the performance efficiency (COP) of the operating state using the cooling or heating determination result and the enthalpy difference.

[0004] Patent Document 2 discloses a technology for calculating air conditioning capacity based on outdoor unit capacity information of an air conditioner, power consumption, and outdoor temperature. One model is selected from multiple capacity calculation models based on the outdoor unit capacity information. The capacity calculation models include multiple cooling capacity calculation models and multiple heating capacity calculation models, and heating and cooling are determined based on the operating time or season. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-76041 [Patent Document 2] JP 2020-165649 A, Patent No. 6816838 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in Patent Document 2, there is a risk that the accuracy of the air conditioner capacity calculated as the required capacity may decrease. That is, although the calculation process for the air conditioner capacity differs between cooling and heating, Patent Document 2 determines whether the air conditioner is operating in cooling or heating mode based on the time of year or season, and if the switching period between cooling and heating is uniformly determined based on a calendar date, there may be a discrepancy with the actual operating mode.

[0007] Furthermore, in Patent Document 1, sensors are attached to each part of the air conditioner, making it possible to determine whether it is heating or cooling. Alternatively, if a measuring device that acquires operating data from the air conditioner is connected via a communication line, the operating mode can be acquired. However, attaching temperature sensors to existing air conditioners to determine whether they are heating or cooling, or measuring devices that require connection to a communication line, is costly and time-consuming and not easy.

[0008] The present disclosure provides a technique for improving the accuracy of the air conditioner capacity presented as the required capacity. [Means for solving the problem]

[0009] A first aspect of the present disclosure is An air conditioning capacity display system that displays the capacity of an air conditioner, A control unit is provided. The control unit The power consumption of the outdoor unit of the air conditioner and the outdoor air temperature, which is the temperature of the air around the outdoor unit, are acquired; determining an operation mode of the air conditioner based on the outside air temperature; The capacity of the air conditioner is calculated based on the power consumption, the outside air temperature, and the operation mode.

[0010] According to the first aspect of the present disclosure, it is possible to improve the accuracy of the air conditioner capacity presented as the required capacity.

[0011] A second aspect of the present disclosure is an air conditioning capability presentation system according to the first aspect, comprising: The control unit The power consumption and the outdoor temperature are applied to the operation mode determined based on the outdoor temperature and the calculation method determined according to outdoor unit capacity information to calculate the capacity of the air conditioner.

[0012] A third aspect of the present disclosure is an air conditioning capability presentation system according to the first or second aspect, the control unit determines that the operation mode is cooling when the outside air temperature exceeds a predetermined outside air temperature threshold; When the outside air temperature is equal to or lower than the outside air temperature threshold, it is determined that the operation mode is heating.

[0013] A fourth aspect of the present disclosure is an air conditioning capability presentation system according to the first or second aspect, The control unit When the operation mode is determined to be heating, If the outside air temperature is above a first outside air temperature threshold for a period of time equal to or less than a predetermined threshold, the determination of heating is continued; If the outside air temperature exceeds the first outside air temperature threshold for a period of time longer than a predetermined threshold, the operating mode is determined to be cooling at the time the outside air temperature exceeds the first outside air temperature threshold.

[0014] A fifth aspect of the present disclosure is an air conditioning capability presentation system according to the fourth aspect, The control unit Even if the outside air temperature does not exceed the first outside air temperature threshold for a period of time longer than the predetermined threshold, If the outside air temperature exceeds a second outside air temperature threshold that is greater than the first outside air temperature threshold, the operation mode is determined to be cooling.

[0015] A sixth aspect of the present disclosure is an air conditioning capability presentation system according to the first or second aspect, The control unit When the operation mode is determined to be cooling, If the outside air temperature is below a second outside air temperature threshold for a period of time equal to or less than a predetermined threshold, the determination of cooling is continued; If the outside air temperature remains below the second outside air temperature threshold for a period of time longer than a predetermined threshold, the operation mode is determined to be heating at the time the outside air temperature falls below the second outside air temperature threshold.

[0016] A seventh aspect of the present disclosure is an air conditioning capability presentation system according to the sixth aspect, The control unit Even if the outside air temperature does not fall below the second outside air temperature threshold for a period of time longer than the predetermined threshold, When the outside air temperature falls below a first outside air temperature threshold that is lower than the second outside air temperature threshold, it is determined that the operation mode is heating.

[0017] An eighth aspect of the present disclosure is an air conditioning capability presentation system according to the first or second aspect, The control unit acquires information about the installation location of the outdoor unit of the air conditioner, The outside air temperature threshold is set in association with information about the installation location, The control unit determines the operation mode based on the outside air temperature threshold associated with the information about the installation location and the outside air temperature.

[0018] A ninth aspect of the present disclosure is an air conditioning capability presentation system according to the first or second aspect, The control unit acquires the age of the building in which the indoor unit of the air conditioner is installed, A model that has learned the correspondence between the outside temperature, the age of the building, and the operation mode, The operating mode is determined by inputting the acquired outside temperature and building age.

[0019] A tenth aspect of the present disclosure is A presentation method performed by an air conditioning capacity presentation system that presents the capacity of an air conditioner, The air conditioning capability presentation system includes: A control unit is provided. The control unit A process of acquiring the power consumption of an outdoor unit of an air conditioner and the outdoor air temperature, which is the temperature of the air around the outdoor unit; A process of determining an operation mode of the air conditioner based on the outside air temperature; and calculating the capacity of the air conditioner based on the power consumption, the outside air temperature, and the operation mode.

[0020] According to the tenth aspect of the present disclosure, it is possible to improve the accuracy of the air conditioner capacity presented as the required capacity.

[0021] An eleventh aspect of the present disclosure is A server capable of communicating via a network with a terminal device that displays the capabilities of an air conditioner having one or more outdoor units and one or more indoor units, A control unit is provided. The control unit The power consumption of the outdoor unit and the outside air temperature, which is the temperature of the air around the outdoor unit, are acquired; determining an operation mode of the air conditioner based on the outside air temperature; The capacity of the air conditioner is calculated based on the power consumption, the outside air temperature, and the operation mode.

[0022] According to the eleventh aspect of the present disclosure, it is possible to improve the accuracy of the air conditioner capacity presented as the required capacity. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a diagram illustrating an example of the overall configuration of an air conditioning capacity presentation system. [Figure 2] FIG. 2 illustrates an example of a hardware configuration of a server. [Figure 3] FIG. 2 is a schematic diagram of a control unit that is responsible for calculations in the air conditioning capacity presentation system. [Figure 4] FIG. 2 is a diagram illustrating a configuration example of a calculation model for air conditioning capacity according to configuration example 1. [Figure 5] FIG. 10 is a diagram illustrating a method for determining an operation mode using two outside air temperature thresholds. [Figure 6] FIG. 10 is a diagram showing outside air temperature thresholds set for each region. [Figure 7]FIG. 10 is a diagram showing an example of intermediate seasons (spring), summer, intermediate seasons (autumn), and winter seasons set for each region. [Figure 8] FIG. 10 is a diagram showing outdoor temperature thresholds set for each building age. [Figure 9] FIG. 10 is a diagram illustrating an example of a driving mode determination model created by a neural network. [Figure 10] FIG. 10 is a diagram illustrating an example of an operation mode setting screen displayed on the operation terminal. [Figure 11] FIG. 10 is a diagram illustrating an example of a setting prompt screen displayed on the operation terminal. [Figure 12] FIG. 10 is a diagram showing a configuration example of a calculation model for an air conditioner according to configuration example 2. [Figure 13] FIG. 10 is a diagram showing a configuration example of a calculation model for an air conditioner according to configuration example 3. [Figure 14] FIG. 10 is a flowchart illustrating an example of a procedure in which the server presents the capacity of an air conditioner. DETAILED DESCRIPTION OF THE INVENTION

[0024] An air conditioning capacity presentation system and a presentation method performed by the air conditioning capacity presentation system will be described below as an example of an embodiment of the present disclosure.

[0025] (1) Overall structure 2 shows the overall configuration of the air conditioning capacity presentation system 10. The air conditioning capacity presentation system 10 includes an air conditioner 20, a power sensor 61, a temperature sensor 62, an operation terminal 63, a weather information providing service 150, a network N, and a server 100. The air conditioning capacity presentation system 10 does not necessarily have to include the weather information providing service 150. Furthermore, the air conditioning capacity presentation system 10 does not necessarily have to include the air conditioner 20. In other words, it is sufficient for the air conditioning capacity presentation system 10 to be able to present the air conditioning capacity of the air conditioner 20.

[0026] (2) Detailed configuration (2-1) Air conditioner 20 The air conditioner 20 is a multi-type air conditioner having a plurality of indoor units 21-24 for one outdoor unit 40. The air conditioner 20 has indoor units 21-24, the outdoor unit 40, and refrigerant communication pipes 31 and 32. There may be one or more indoor units 21-24 and one or more outdoor units 40. outdoor unit and one or more indoor units The indoor units 21-24 are installed inside building B. The indoor units 21-24 adjust the temperature of the environment in which the user is located by providing cool or warm air to the user. An indoor unit power supply line 33 is connected to the indoor units 21-24. The indoor unit power supply line 33 transmits power from a commercial power supply 52 to the indoor units 21-24.

[0027] The outdoor unit 40 is installed outside the building B. The outdoor unit 40 obtains cold or hot heat from the outside air, which is a heat source. The outdoor unit 40 has an outdoor unit power supply line 41. The outdoor unit power supply line 41 transmits power from a commercial power supply 51 to the outdoor unit 40. The outdoor unit 40 has an outdoor heat exchanger 42 and an outdoor fan 43.

[0028] The refrigerant communication pipes 31, 32 move the refrigerant between the indoor units 21-24 and the outdoor unit 40. The refrigerant communication pipes 31, 32, together with the indoor units 21-24 and the outdoor unit 40, form a refrigerant circuit.

[0029] (2-2) Power sensor 61 The power sensor 61 acquires measured values ​​of power consumption by the outdoor unit 40 of the air conditioner 20. The power sensor 61 is attached to the outdoor unit power line 41. The power sensor 61 can connect to the network N via wireless communication and transmit power consumption data to the server 100.

[0030] (2-3) Temperature sensor 62 The temperature sensor 62 acquires a measured value of the outside air temperature. The temperature sensor 62 is attached, for example, near the outdoor unit 40. In this case, the outside air temperature is the temperature of the air surrounding the outdoor unit 40. The temperature sensor 62 can connect to the network N by wireless communication and transmit outside air temperature data to the server 100. Note that instead of the temperature sensor 62, the outside air temperature may also be acquired from the weather information providing service 150 based on property information.

[0031] The temperature sensor 62 does not measure the air blown out from the outdoor unit 40 after heat exchange in the outdoor heat exchanger 42.

[0032] (2-4) Operation terminal 63 The operation terminal 63 is operated by an operator of the air conditioner 20, etc. The operation terminal 63 may be a terminal device such as a PC, tablet terminal, or smartphone. The operator inputs outdoor unit capacity information into the operation terminal 63. The outdoor unit capacity information is, for example, the rated capacity of the outdoor unit 40. Alternatively, the outdoor unit capacity information may be information other than the rated capacity of the outdoor unit 40 and related to that rated capacity. The operation terminal 63 can connect to the network N via wireless communication and transmit the outdoor unit capacity information to the server 100. Note that the operator is a manufacturer representative who proposes an appropriate air conditioner based on the capacity of the air conditioner, but the operator may also be a person who uses the building B in which the air conditioner is installed, i.e., a user of the air conditioner.

[0033] Furthermore, the operator inputs information relating to the pressure loss of the refrigerant in the refrigerant communication pipes 31, 32 into the operation terminal 63. The information relating to the pressure loss is, for example, one or both of the following quantities:

[0034] The length of the refrigerant communication pipes 31, 32 connecting the indoor unit 24 farthest from the outdoor unit 40 to the outdoor unit 40.

[0035] Height difference between outdoor unit 40 and indoor units 21 to 24.

[0036] The operation terminal 63 can transmit information related to the pressure loss via the network N.

[0037] The worker also inputs information related to the rated output of the outdoor fan 43 into the operation terminal 63. The worker also inputs at least one of the installation location of the air conditioner 20, the age of building B, and the daily operation mode into the operation terminal 63. The operation terminal 63 can transmit the information related to the rated output of the outdoor fan 43, the installation location, the age of building B, and the daily operation mode to the server 100 via the network N.

[0038] (2-5) Network N The network N is configured as a collection of public switched telephone networks (PSTN), mobile phone networks, wireless LANs, and other known networks.

[0039] (2-6) Server 100 The server 100 is connected to a network N. The server 100 can receive data transmitted from a power sensor 61, a temperature sensor 62, and an operation terminal 63.

[0040] Fig. 2 is a diagram showing an example of the hardware configuration of the server 100. As shown in Fig. 2, the server 100 includes a processor 221, a memory 222, an auxiliary storage device 223, an I / F (Interface) device 224, a communication device 225, and a drive device 226. The hardware components of the server 100 are connected to each other via a bus 227.

[0041] The processor 221 has various arithmetic devices such as a CPU (Central Processing Unit), etc. The processor 221 reads and executes various programs onto the memory 222. The processor 221 corresponds to the control unit 70 that controls the entire server 100.

[0042] The memory 222 has a main storage device such as a ROM (Read Only Memory), a RAM (Random Access Memory), etc. The processor 221 and the memory 222 form a so-called computer, and the processor 221 executes various programs read onto the memory 222.

[0043] The auxiliary storage device 223 stores various programs and various data used when the processor 221 executes the various programs.

[0044] The I / F device 224 is a connection device that connects a display device 230 and an operation device 240, which are examples of external devices, to the server 100. The display device 230 displays the internal state of the server 100. The operation device 240 is used when an administrator of the server 100 inputs various instructions to the server 100.

[0045] The communication device 225 is a communication device for communicating with the operation terminal 63, the power sensor 61, and the temperature sensor 62 via the network N.

[0046] The drive device 226 is a device for loading a recording medium 250. The recording medium 250 here includes media that record information optically, electrically, or magnetically, such as a CD-ROM, a flexible disk, or a magneto-optical disk. The recording medium 250 may also include semiconductor memory that records information electrically, such as a ROM or flash memory.

[0047] The various programs to be installed in the auxiliary storage device 223 are installed, for example, by setting the distributed recording medium 250 in the drive device 226 and reading out the various programs recorded on the recording medium 250 by the drive device 226. Alternatively, the various programs to be installed in the auxiliary storage device 223 may be installed by being downloaded from the network N via the communication device 225.

[0048] (3) Control unit 70 3 is a schematic diagram of the control unit 70, which is responsible for the calculations of the air conditioning capacity presentation system 10. The control unit 70 is physically located in the server 100. The control unit 70 has an outdoor unit capacity information receiving unit 71, a power consumption receiving unit 72, an outdoor air temperature receiving unit 73, an operation mode determining unit 74, a correction unit 75, a proposal creating unit 76, an installation location receiving unit 77, an age receiving unit 78, an operation mode receiving unit 79, a setting promoting unit 80, and a capacity calculating unit 81. Each of these functions of the server 100 is realized by the server 100 executing dedicated software.

[0049] The outdoor unit capacity information receiving section 71 receives the outdoor unit capacity information from the operation terminal 63 via the network N.

[0050] The power consumption receiving unit 72 receives power consumption data from the power sensor 61 via the network N.

[0051] The outside air temperature receiving unit 73 receives outside air temperature data from the temperature sensor 62 via the network N.

[0052] The operation mode determination unit 74 determines the operation mode of the air conditioner based on the outside air temperature data received by the outside air temperature receiving unit 73. The operation mode is a distinction between cooling operation and heating operation. If humidity information is available, dry operation may be distinguished based on the temperature and humidity.

[0053] The correction unit 75 obtains a corrected calculated value by correcting the calculated value related to the capacity of the air conditioner calculated by the capacity calculation unit 81. The correction unit 75 receives "information related to the pressure loss of the refrigerant in the refrigerant communication pipes 31, 32" and "information related to the rated output of the outdoor fan 43" from the network N. The correction unit 75 uses this information when obtaining the corrected calculated value from the calculated value.

[0054] The proposal creation unit 76 creates a proposal for new units to be introduced to replace the outdoor unit 40 and at least some of the indoor units 21 to 24, based on the maximum value of the calculated values ​​or corrected calculated values ​​over a predetermined period.

[0055] The installation location receiving unit 77 receives the installation location where the outdoor unit is installed from the operation terminal 63 via the network N. The installation location may be any information that can identify the approximate installation location (region described below), such as an address, postal code, or telephone number.

[0056] The age receiving unit 78 receives the age of the building B in which the indoor unit is installed from the operation terminal 63 via the network N. The age receiving unit 78 may receive the year of completion instead of the age of the building.

[0057] The operation mode receiving unit 79 receives the operation mode set by the operator on a daily basis from the operation terminal 63 via the network N. In this case, the operation mode determining unit 74 does not determine the operation mode based on the outside air temperature data TO, but rather gives priority to and adopts the operation mode set by the operator.

[0058] The setting prompting unit 80 prompts the worker to set the operation mode on a daily basis when the operation mode determined by the operation mode determining unit 74 satisfies certain conditions.

[0059] The capacity calculation unit 81 obtains a calculated value of the capacity of the air conditioner 20 based on the outdoor unit capacity information, power consumption, and outside temperature. The capacity calculation unit 81 includes multiple models. The multiple models M include multiple cooling capacity calculation models M1 to M4 and multiple heating capacity calculation models M5 to M8. The capacity calculation unit 81 selects one of the cooling capacity calculation models M1 to M4 or the multiple heating capacity calculation models M5 to M8 depending on the operation mode determined by the operation mode determination unit 74. Furthermore, the capacity calculation unit 81 selects one capacity calculation model from the multiple cooling capacity calculation models M1 to M4 or the multiple heating capacity calculation models M5 to M8 based on the outdoor unit capacity information.

[0060] The cooling capacity calculation models M1 to M4 and the heating capacity calculation models M5 to M8 are, for example, characteristic equations. Alternatively, the cooling capacity calculation models M1 to M4 and the heating capacity calculation models M5 to M8 may be tables, learned models, or the like. The cooling capacity calculation models M1 to M4 and the heating capacity calculation models M5 to M8 are examples of calculation methods for calculating the capacity of an air conditioner using power consumption and outside air temperature.

[0061] (4) Detailed configuration of the capacity calculation unit 81 Various configurations are possible for the capacity calculation unit 81. Possible configuration examples will be described below.

[0062] (4-1) Configuration example 1 (4-1-1) Details of the configuration 4 shows the configurations of cooling capacity calculation models M1 to M4 and heating capacity calculation models M5 to M8 according to configuration example 1. Each of the cooling capacity calculation models M1 to M4 and heating capacity calculation models M5 to M8 has a calculation processing unit 741, air conditioner performance parameters 742 that represent the performance of the air conditioner 20, and a final calculation unit 749.

[0063] The air conditioner performance parameters 742 may include a compressor performance parameter 743 related to the performance of the compressor of the air conditioner 20 .

[0064] The air conditioner performance parameters 742 may include an outdoor heat exchanger performance parameter 744 related to the performance of the outdoor heat exchanger 42 of the air conditioner 20 .

[0065] The air conditioner performance parameters 742 may include an outdoor fan performance parameter 745 related to the performance of the outdoor fan 43 of the air conditioner 20 .

[0066] The calculation processing unit 741 performs a simulation of the refrigeration cycle 746 described later, and calculates the enthalpy difference Δh and the refrigerant circulation amount G of the refrigeration cycle 746 (hereinafter, the enthalpy difference Δh and the refrigerant circulation amount G may be referred to as "intermediate calculated values").

[0067] The final calculation unit 749 calculates the cooling or heating capacity C of the air conditioner 20.

[0068] (4-1-2) Operation (4-1-2-1) Model Selection First, the operation mode determination unit 74 determines the operation mode based on the outside air temperature data TO output by the outside air temperature receiving unit 73. The method for determining the operation mode will be explained in (5). This determines which of the cooling capacity calculation models M1 to M4 and the heating capacity calculation models M5 to M8 should be selected. Next, based on the outdoor unit capacity information SEL output by the outdoor unit capacity information receiving unit 71, the capacity calculation unit 81 selects one capacity calculation model from the multiple cooling capacity calculation models M1 to M4 or the heating capacity calculation models M5 to M8.

[0069] (4-1-2-2) Entering measurement values The power consumption data P output by the power consumption receiving unit 72 and the outside air temperature data TO output by the outside air temperature receiving unit 73 are input to the selected capacity calculation model.

[0070] (4-1-2-3) Simulation of Refrigeration Cycle 746 The cooling capacity calculation models M1 to M4 derive the condensation pressure Pc or its equivalent temperature in the refrigeration cycle, and the evaporation pressure Pe or its equivalent temperature based on the power consumption data P, the outdoor temperature data TO, and the air conditioner performance parameters 742.

[0071] In deriving the refrigerant condensation pressure Pc or its equivalent temperature, and the evaporation pressure Pe or its equivalent temperature, the refrigerant evaporation pressure Pe or its equivalent temperature and the condensation pressure Pc or its equivalent temperature are set. Specifically, the setting is performed in the following procedure.

[0072] [If the selected model is cooling capacity calculation model M1 to M4] (i) In the simulated refrigeration cycle 746, the evaporation pressure Pe of the refrigerant or its corresponding temperature is set to a predetermined constant. Instead of the evaporation pressure Pe, the evaporation temperature may be set to a predetermined constant.

[0073] (ii) In deriving the condensation pressure Pc of the refrigerant or the equivalent temperature corresponding thereto, the condensation pressure Pc of the refrigerant or the equivalent temperature corresponding thereto is obtained by calculation.

[0074] In the calculation to obtain the refrigerant condensation pressure Pc or its equivalent temperature, the outdoor air heat exchange amount and the refrigerant heat exchange amount may be calculated. Here, the "outdoor air heat exchange amount" refers to the amount of heat received by the outdoor air in the outdoor heat exchanger. The "refrigerant heat exchange amount" refers to the amount of heat lost by the refrigerant in the outdoor heat exchanger. The outdoor air heat exchange amount is calculated based on at least the outdoor temperature data TO and is a function of the condensation pressure Pc or its equivalent temperature. The refrigerant heat exchange amount is calculated based on at least the power consumption data P and is a function of the condensation pressure Pc or its equivalent temperature. The condensation pressure Pc or its equivalent temperature is used as a variable repeatedly to obtain the condensation pressure Pc or its equivalent temperature at which the outdoor air heat exchange amount and the refrigerant heat exchange amount match.

[0075] [If the selected model is a heating capacity calculation model M5 to M8] (i) In deriving the evaporation pressure Pe of the refrigerant or the equivalent temperature corresponding thereto, the condensation pressure Pc of the refrigerant or the equivalent temperature corresponding thereto is set to a predetermined constant.

[0076] (ii) In deriving the evaporation pressure Pe of the refrigerant or the equivalent temperature corresponding thereto, the evaporation pressure Pe of the refrigerant or the equivalent temperature corresponding thereto is obtained by calculation.

[0077] The calculation procedure is the same as in the cooling capacity calculation models M1 to M4, and involves calculating the outdoor air heat exchange amount and the refrigerant heat exchange amount. However, in the case of heating, the outdoor air heat exchange amount refers to the amount of heat lost by the outdoor air in the outdoor heat exchanger, and the refrigerant heat exchange amount refers to the amount of heat received by the refrigerant in the outdoor heat exchanger.

[0078] [For all cooling capacity calculation models M1 to M4 and heating capacity calculation models M5 to M8] The degree of subcooling and the degree of superheat may be assumed to be predetermined constants.

[0079] (4-1-2-4) Obtaining intermediate calculation values The selected cooling capacity calculation models M1 to M4 and heating capacity calculation models M5 to M8 use the set refrigerant evaporation pressure Pe or its equivalent temperature, or the condensation pressure Pc or its equivalent temperature, and the derived refrigerant condensation pressure Pc or its equivalent temperature, or the evaporation pressure Pe or its equivalent temperature to obtain a refrigeration cycle 746. The selected cooling capacity calculation models M1 to M4 and heating capacity calculation models M5 to M8 use the refrigeration cycle 746 and air conditioner performance parameters 742 to obtain intermediate calculation values ​​(the enthalpy difference Δh of the refrigeration cycle 746 and the refrigerant circulation amount G).

[0080] (4-1-2-5) Calculation of Ability C The final calculation unit 749 calculates the capacity C of the air conditioner 20 based on the intermediate calculation values.

[0081] (5) How to determine the operating mode (5-1) Determining the driving mode based on the outside temperature and the outside temperature threshold (5-1-1) Determining the driving mode based on one threshold The operation mode determination unit 74 compares one preset outside air temperature threshold value with the outside air temperature data TO. When the outside air temperature data TO > the outside air temperature threshold value (when the outside air temperature data TO exceeds the outside air temperature threshold value), the operation mode determination unit 74 determines that it is cooling, and when the outside air temperature data TO ≤ the outside air temperature threshold value (when the outside air temperature data TO is below the outside air temperature threshold value), it determines that it is heating. By doing so, the operation mode determination unit 74 can accurately determine the operation mode based on the outside air temperature and improve the accuracy of the capacity of the air conditioner presented.

[0082] (5-1-2) Determination of operation mode by two threshold values The operation mode determination unit 74 may determine the operation mode using two outside air temperature threshold values T1 and T2.

[0083] FIG. 5 is a diagram for explaining a method of determining an operation mode using two outside air temperature threshold values T1 and T2. It is assumed that the outside air temperature threshold value T1 < T2. When the outside air temperature data TO exceeds the outside air temperature threshold value T2, the operation mode determination unit 74 determines that it is cooling, and when the outside air temperature data TO is below the outside air temperature threshold value T1, it determines that it is heating. Between the outside air temperature threshold values T1 and T2, it is determined to be cooling or heating as follows.

[0084] First, an explanation will be given assuming an intermediate period such as spring when switching from heating to cooling. (i) Assume that currently, the operation mode determination unit 74 has determined that the operation mode is heating. In the state where it is determined to be heating, if the outside air temperature data TO exceeds the outside air temperature threshold value T1 for a time less than the threshold value, the operation mode determination unit 74 determines that it remains heating. (ii) When the outside air temperature data TO exceeds the outside air temperature threshold value T1 for a time exceeding the threshold value, the operation mode determination unit 74 determines that it is cooling at the moment when the outside air temperature data TO exceeds the outside air temperature threshold value T1 for a time exceeding the threshold value. The operation mode determination unit 74 can accurately determine the operation mode based on the outside air temperature even during an intermediate period such as spring and improve the accuracy of the capacity of the air conditioner presented. (iii) The operation mode determination unit 74 determines that it is cooling at the moment when the outside air temperature data TO exceeds the outside air temperature threshold value T2. (iv) When the outside air temperature data TO falls below the outside air temperature threshold T1, it is determined that heating is in progress.

[0085] Similarly, the following description will be given assuming an intermediate period such as autumn when cooling is switched to heating. (i) Assume that the operation mode is currently determined to be cooling by the operation mode determination unit 74. If the outside air temperature data TO falls below the outside air temperature threshold T2 for a period of time that is shorter than the threshold while the operation mode is determined to be cooling, it is determined that the operation mode will remain cooling. (ii) If the outdoor temperature data TO falls below the outdoor temperature threshold T2 for a period of time equal to or longer than the threshold, the operation mode determination unit 74 determines that heating is enabled at the time the outdoor temperature data TO falls below the outdoor temperature threshold T2 for a period of time equal to or longer than the threshold. The operation mode determination unit 74 can accurately determine the operation mode based on the outdoor temperature, even in intermediate seasons such as autumn, and can improve the accuracy of the presented air conditioner capacity. (iii) When the outside air temperature data TO exceeds the outside air temperature threshold T2, it is determined that cooling is in progress. (iv) When the outside air temperature data TO falls below the outside air temperature threshold T1, it is determined that heating is in progress.

[0086] (5-1-3) Determine the driving mode based on the threshold set for each region The driving mode determination unit 74 may determine the driving mode by comparing the outside air temperature data TO with an outside air temperature threshold value that is set in advance for each region.

[0087] FIG. 6 shows the outdoor temperature thresholds Ta to Ti set for each region. When one outdoor temperature threshold is set for one region as in FIG. 6, the operation mode determination unit 74 determines the operation mode as explained in (5-1-1). When outdoor temperature thresholds T1 and T2 are set for one region, the operation mode determination unit 74 determines the operation mode as explained in (5-1-2). The installation location of the air conditioner is received by the installation location receiving unit 77 from the operation terminal 63. The operation mode determination unit 74 determines the region based on the installation location. Even if air conditioners are installed in various installation locations, the operation mode can be accurately determined based on the outdoor temperature, improving the accuracy of the presented air conditioner capacity.

[0088] (5-1-4) Determine the intermediate period by region The summer, intermediate, and winter seasons are defined in advance for each region, and the operation mode determination unit 74 uniformly determines the operation mode as cooling or heating in both summer and winter, and determines the operation mode using method (5-1-1) or (5-1-2) only in the intermediate season.

[0089] FIG. 7 shows an example of intermediate seasons (spring), summer, intermediate seasons (autumn), and winter set for each region. The operation mode determination unit 74 determines the region based on the installation location received by the installation location receiving unit 77. The operation mode determination unit 74 then determines whether the current time falls into the intermediate season set for that region. If the current time is an intermediate season, the operation mode is determined by method (5-1-1) or (5-1-2). Because the operation mode determination unit 74 determines the intermediate season based on the region, it can accurately determine the operation mode during the intermediate season, improving the accuracy of the presented air conditioner capacity.

[0090] (5-1-5) Determine the operating mode based on the outside temperature and building age An outdoor temperature threshold corresponding to the age of the building is set in advance. The operation mode determination unit 74 compares the outdoor temperature threshold corresponding to the age of the building B in which the air conditioner is installed with the outdoor temperature data TO to determine the operation mode.

[0091] Fig. 8 shows the outside temperature thresholds Tj to Tr that are set for each building age. In Fig. 8, the outside temperature thresholds are registered for each building age, divided into five-year intervals. When one outside temperature threshold is set as in Fig. 8, the operation mode determination unit 74 determines the operation mode as shown in (5-1-1). When two outside temperature thresholds T1 and T2 are set for the building age, the operation mode determination unit 74 determines the operation mode as shown in (5-1-2).

[0092] The age of building B is received by the age receiving unit 78 from the operation terminal 63. As the age of building increases, the temperature of the air-conditioned space in building B becomes more susceptible to the influence of the outside temperature. In other words, the insulation performance decreases. For example, in spring, the indoor temperature tends to rise due to the influence of the outside temperature, and the user may start cooling operation earlier. In autumn, the indoor temperature tends to fall due to the influence of the outside temperature, and the user may start heating operation earlier. Therefore, by setting the outside temperature threshold according to the age of building, the operation mode determination unit 74 can more easily estimate the operation mode that the user will set depending on the age of building, thereby improving the accuracy of determining the operation mode.

[0093] (5-1-6) Driving mode determination using a driving mode determination model created by machine learning The operation mode determination unit 74 may input the outside temperature data TO and the age of building B into an operation mode determination model created by machine learning, and determine that the operation mode is the one output by the operation mode determination model.

[0094] 9 is an example of a driving mode determination model 170 created by a neural network. The inputs and outputs of the driving mode determination model in FIG. Input: Outside temperature data TO, building age y Output: Operation mode (cooling / heating) The driving mode determination model 170 has an input layer 171, an intermediate layer 172, and an output layer 173. In the neural network of FIG. 9, L layers are fully connected from the nodes in the input layer 171 to the nodes in the output layer 173. A neural network with a deep hierarchy is called a DNN (Deep Neural Network). The layer between the input layer 171 and the output layer 173 is called an intermediate layer 172. The number of intermediate layers 172, the number of nodes, etc. are merely examples.

[0095] Weights are set for the connections between nodes, and the output from a node multiplied by the weight is transmitted to the node in the next layer. The node in the next layer receives the output of all nodes in the previous layer, so the node in the next layer sums the output of all nodes in the previous layer. The node in the next layer activates the summed output using an activation function and transmits it to the next node. This process is repeated until the value is transmitted to the output layer.

[0096] In this embodiment, since it is desired to determine whether the operation mode is cooling or heating, the operation mode determination model 170 is a classification model (another model is a regression model). For this reason, two nodes 178 and 179 corresponding to the cooling and heating modes to be determined are provided in the output layer 173. In a classification model, it is common for each node in the output layer 173 to output the probability of being classified into that node. Therefore, in Figure 9, the output layer 173 outputs the probability of cooling or heating, with node 178 being the "probability of cooling" and node 179 being the "probability of heating."

[0097] It is assumed that the learning phase of the operation mode determination model 170 is performed using an existing method. In the inference phase using the operation mode determination model 170, for example, when outdoor temperature data TO = 5°C and the building age of 50 years are input, it is expected that node 179 corresponding to heating will output a probability close to "1," and node 178 corresponding to cooling will output a probability close to "0." The operation mode determination unit 74 selects the operation mode with the higher probability. If the difference in probability between heating and cooling is less than a threshold, the operation mode determination unit 74 may continue the current operation mode (continue determining cooling even if the probability of heating is higher, or continue determining heating even if the probability of cooling is higher). Even if the building B in which the air conditioner is installed is of a different age, the operation mode can be accurately determined based on the outdoor temperature and building age, improving the accuracy of the presented air conditioner capacity.

[0098] If the input to the operation mode determination model 170 includes a value representing the internal heat generation of the building B (heat generation from lighting, PCs, human bodies, etc.), the accuracy of the determination of the operation mode by the operation mode determination model 170 will be further improved.

[0099] Furthermore, classification models include, in addition to neural networks, support vector machines, logistic regression, decision trees, random forests, and the like, and any model may be used.

[0100] (5-1-7) Workers set the operation mode for each system on a daily basis If an operator inputs the operation mode on a daily basis for each air conditioner system (identification information), it is not necessary to determine the operation mode based on the outside air temperature data TO as in this embodiment.

[0101] 10 is an example of an operation mode setting screen 200 displayed by the operation terminal 63. The operation mode setting screen 200 has a system field 201, a start input field 202, an end input field 203, and an operation mode setting field 204. The system field 201 is a field for inputting identification information of an air conditioner. The start input field 202 is a field for inputting, for example, the start of a mid-season period, and the end input field 203 is a field for inputting, for example, the end of a mid-season period. Therefore, an operator can set the operation mode for each system (each air conditioner) on a daily basis from the operation mode setting screen 200. It should be noted that an operator can also set the operation mode to cooling or heating all year round.

[0102] The operation mode setting screen 200 also has an add button 205 and a delete button 206. Pressing the add button 205 additionally displays a start date input field 202, an end date input field 203, and an operation mode setting field 204, and pressing the delete button 206 deletes the start date input field 202, the end date input field 203, and the operation mode setting field 204.

[0103] The daily operation mode set by the operator is transmitted from the operation terminal 63 to the server 100. The operation mode receiving unit 79 receives the operation mode set by the operator. If the current date is within the period set by the operator in the start input field 202 and end input field 203, the operation mode determination unit 74 determines that the operation mode is the one set by the operator. That is, in this case, the operation mode determination unit 74 does not determine the operation mode by comparing the outside temperature threshold with the outside temperature data TO. If the current date is not within the period set by the operator in the start input field 202 and end input field 203, the operation mode determination unit 74 determines the operation mode by comparing the outside temperature data TO with the outside temperature threshold.

[0104] It is preferable that the operator can input the outside air temperature threshold value on the operation mode setting screen 200. It is preferable that two outside air temperature threshold values ​​T1 and T2 can be set to improve the accuracy of determination during the intermediate season.

[0105] (5-1-8) Encourage workers to set the operation mode on a daily basis There may be cases where the calendar indicates summer but the operation mode determination unit 74 of this embodiment determines that heating is the mode. Also, there may be cases where the calendar indicates winter but the operation mode determination unit 74 determines that cooling is the mode. In these cases, it is difficult to determine whether the operation mode determination is correct. Alternatively, it may be difficult to determine the operation mode in intermediate seasons such as spring and autumn. Therefore, when certain conditions are met, the setting prompting unit 80 prompts the operator to set the operation mode on a daily basis.

[0106] The certain conditions will be explained. For example, there is a case where the calendar shows that it is summer but the operation mode determination unit 74 determines that it is heating. Since users rarely set heating in summer, it is difficult to determine whether the determination to heat is correct. Therefore, in this case, it is determined that the certain conditions are met. Similarly, if the calendar shows that it is winter but the operation mode determination unit 74 determines that it is cooling, it is determined that the certain conditions are met. Since users rarely set cooling in winter, it is difficult to determine whether the determination to cool is correct. Therefore, in this case, it is determined that the certain conditions are met.

[0107] During the intermediate season, it may be determined that both cooling and heating are in operation within a single day. Since the user rarely switches between cooling and heating within a single day, it is difficult to determine whether the cooling / heating decision is correct. In this case, the setting prompting unit 80 prompts the operator to set the operation mode on a daily basis, assuming that certain conditions are met.

[0108] Similarly, in an intermediate season, for example, the operation mode determination unit 74 may temporarily determine that the operation mode should be set to heating even though it has determined that the operation mode should be set to cooling for one week before and after the period. Since it is rare for a user to set the operation mode to cooling for one week before and after the period and then set it to heating for just one day, it is difficult to determine whether the determination to heat is correct. Similarly, the operation mode determination unit 74 may temporarily determine that the operation mode should be set to cooling even though it has determined that the operation mode should be set to heating for one week before and after the period. Since it is rare for a user to set the operation mode to heating for one week before and after the period and then set it to cooling for just one day, it is difficult to determine whether the determination to heat or cool is correct. Therefore, in this case, the setting prompting unit 80 prompts the operator to set the operation mode on a daily basis, assuming that certain conditions are met.

[0109] FIG. 11 shows a setting prompt screen 210 displayed on the operation terminal 63. When the operator connects the operation terminal 63 to the server 100, the setting prompt unit 80 displays the setting prompt screen 210 as shown in FIG. 11. The setting prompt screen 210 displays a message 211 saying, "You can set the operation mode on a daily basis to improve the calculation accuracy of the air conditioning capacity," a "Set" button 212, and a "Do not set" button 213. The operator can check the message 211 and press the "Set" button 212 or the "Do not set" button 213. When the "Set" button 212 is pressed, the operation mode setting screen 200 shown in FIG. 10 is displayed.

[0110] The period during which the driving mode is set preferably includes a day on which certain conditions are satisfied. For this reason, message 211 may suggest a week including the day on which certain conditions are satisfied, or one to two weeks before or after the day on which certain conditions are satisfied, as a period during which the driving mode should be set.

[0111] (4-2) Configuration example 2 (4-2-1) Details of the configuration FIG. 12 shows the configurations of the cooling capacity calculation models M1 to M4 and the heating capacity calculation models M5 to M8 according to the second configuration example.

[0112] Each of the cooling capacity calculation models M1 to M4 and the heating capacity calculation models M5 to M8 has a characteristic equation 751. A characteristic equation is a calculation equation used to reproduce the behavior of a certain air conditioner.

[0113] The characteristic equation may express the relationship between the power consumption data P and the capacity C. For example, The characteristic formula may express the capacity C in the form of a linear function of the power consumption data P. The characteristic formula may include the rated power consumption PN, the rated capacity CN, half the rated capacity (1 / 2) CN, etc.

[0114] (4-2-2) Operation (4-2-2-1) Entering measurement values The power consumption data P output by the power consumption receiving unit 72 and the outside air temperature data TO output by the outside air temperature receiving unit 73 are input to a capacity calculating unit 81.

[0115] (4-2-2-2) Model Selection First, the operation mode determination unit 74 determines the operation mode based on the outside air temperature data TO output by the outside air temperature receiving unit 73. The method of determining the operation mode based on the outside air temperature data TO may be the same as in (5-1-1) to (5-1-6). It is determined which of the cooling capacity calculation models M1 to M4 and the heating capacity calculation models M5 to M8 should be selected. Next, based on the outdoor unit capacity information SEL output by the outdoor unit capacity information receiving unit 71, the capacity calculation unit 81 selects one capacity calculation model from the multiple cooling capacity calculation models M1 to M4 or the heating capacity calculation models M5 to M8.

[0116] (4-2-2-3) Calculation of Ability C The final calculation unit 749 calculates the capacity C of the air conditioner 20 based on the power consumption data P.

[0117] (4-3) Configuration example 3 (4-3-1) Details of the configuration 13 shows the configurations of cooling capacity calculation models M1 to M4 and heating capacity calculation models M5 to M8 according to configuration example 3. Each of the cooling capacity calculation models M1 to M4 and heating capacity calculation models M5 to M8 has a characteristic equation 761. The characteristic equation is a calculation equation used to reproduce the behavior of a certain air conditioner.

[0118] The characteristic equation may express the relationship between the power consumption data P and the capacity C. For example, the characteristic equation may express the ratio C / CN of the capacity C to the rated capacity CN in the form of a function of the ratio P / PN of the power consumption data P to the rated power consumption PN.

[0119] (4-3-2) Operation (4-3-2-1) Entering measurement values The power consumption data P output by the power consumption receiving unit 72 and the outside air temperature data TO output by the outside air temperature receiving unit 73 are input to a capacity calculating unit 81.

[0120] (4-3-2-2) Model Selection First, the operation mode determination unit 74 determines the operation mode based on the outside air temperature data TO output by the outside air temperature receiving unit 73. The method of determining the operation mode based on the outside air temperature data TO may be the same as in (5-1-1) to (5-1-6). It is determined which of the cooling capacity calculation models M1 to M4 and the heating capacity calculation models M5 to M8 should be selected. Next, based on the outdoor unit capacity information SEL output by the outdoor unit capacity information receiving unit 71, the capacity calculation unit 81 selects one capacity calculation model from the multiple cooling capacity calculation models M1 to M4 or the heating capacity calculation models M5 to M8.

[0121] (4-3-2-3) Calculation of Ability C The final calculation unit 749 calculates the capacity C of the air conditioner 20 based on the power consumption data P.

[0122] (4-4) Configuration example 4 As described above, in the configurations of configuration examples 1 to 3, the cooling capacity calculation models M1 to M4 and the heating capacity calculation models M5 to M8 may have input and output relational expressions in the form of a multi-dimensional table rather than performing calculations.

[0123] (6) Procedures for demonstrating abilities FIG. 14 is a flowchart illustrating the procedure by which the server 100 presents the capacity of the air conditioner.

[0124] First, a worker checks the existing equipment, the air conditioner 20. The worker arrives at building B and checks the indoor units 21-24, the outdoor unit 40, the refrigerant connection pipes 31-32, and the like.

[0125] Next, the worker attaches the power sensor 61 to the outdoor unit power line 41 (S1).

[0126] Next, the worker attaches the temperature sensor 62 near the outdoor unit 40 (S2).

[0127] Next, the worker uses the operation terminal 63 to input the following values ​​(S3). The input information is sent to the server 100.

[0128] - Outdoor unit capacity information (e.g., outdoor unit rated capacity).

[0129] - Information related to the pressure loss of the refrigerant in the refrigerant connection pipes 31, 32.

[0130] - Information related to the rated power of the outdoor fan 43.

[0131] - Installation location - Age of building B, which is air-conditioned by the indoor unit - Daily set driving mode Next, the worker starts the measurement. Over the measurement period (for example, one year), the power sensor 61 and the temperature sensor 62 continue to transmit the measurement value data to the server 100 (S4).

[0132] Next, the data is analyzed. First, the driving mode determination unit 74 compares the outside air temperature with one or more outside air temperature thresholds to determine the driving mode (S5).

[0133] First, the capacity calculation unit 81 of the control unit 70 selects one of the cooling capacity calculation models M1 to M4 and the heating capacity calculation models M5 to M8 (for example, the cooling capacity calculation model M3) based on the operation mode and outdoor unit capacity information (S6).

[0134] Next, the power consumption data P and outside air temperature data TO acquired over the measurement period are input to the selected cooling capacity calculation model M3. The cooling capacity calculation model M3 outputs data on the capacity of the air conditioner 20 required over the measurement period (S7). In this way, the capacity calculation unit 81 outputs a calculated value of the required capacity.

[0135] Next, the calculated value of the ability is corrected. The correction unit 75 corrects the calculated value of the ability based on the following information and outputs the corrected calculated value (S8).

[0136] - Information related to the pressure loss of the refrigerant in the refrigerant connection pipes 31, 32.

[0137] - Information related to the rated power of the outdoor fan 43. In this way, the correction unit 75 presents a corrected calculated value of the ability.

[0138] Next, a proposal is made for updating the air conditioner 20. The proposal creation unit 76 creates a proposal for new installation units to replace at least some of the indoor units 21-24 and the outdoor unit 40, based on the maximum value of the calculated capacity values ​​or corrected calculated capacity values ​​(S9).

[0139] (7) Features (7-1) The calculated value of the air conditioning capacity is obtained based on the outdoor unit capacity information, power consumption, and outdoor temperature. Therefore, fewer types of data need to be acquired to calculate the capacity. In other words, the labor required by the operator to measure the capacity is reduced. In particular, the temperature sensor 62 does not measure the air blown out from the outdoor unit 40 after heat exchange. Furthermore, because the system for measuring the capacity has many sensors, the cost of the system for measuring the capacity is low.

[0140] (7-2) The capacity calculation unit 81 selects one capacity calculation model based on the outdoor air temperature data TO and the outdoor unit capacity information. Therefore, a capacity calculation model appropriate for simulating the capacity of the outdoor unit is used.

[0141] (7-3) The correction unit 75 obtains a corrected calculated value by correcting the calculated value based on information related to the pressure loss of the refrigerant in the refrigerant communication pipe and information related to the rated output of the outdoor fan, thereby improving the accuracy of the required capacity.

[0142] (8) Variations (8-1) Variation 1A In the above-described embodiment, the temperature sensor 62 and the outdoor air temperature receiving unit 73 acquire the outdoor air temperature. Alternatively, a temperature and humidity sensor 62' and an outdoor air temperature and humidity receiving unit 73' may be provided, and the outdoor air temperature and humidity receiving unit 73' may acquire the outdoor air temperature and outdoor humidity. In this case, the operation mode determination unit 74 determines the operation mode based on the outdoor air temperature and outdoor humidity. The capacity calculation unit 81 calculates the capacity of the air conditioner 20 based on the outdoor unit capacity information, power consumption, outdoor air temperature, and outdoor humidity.

[0143] According to this configuration, the outdoor humidity is used in addition to other parameters to obtain the calculated capacity, thereby obtaining a more accurate calculated capacity.

[0144] (7-2) Variation 1B In the above embodiment, the outside temperature data is acquired by the temperature sensor 62. Alternatively, the server 100 may acquire the outside temperature data from a weather information providing service 150 (the Japan Meteorological Agency or a private weather company) connected to the network N.

[0145] <Reasons for the effect> The first aspect of the present disclosure is a method for determining an operation mode of the air conditioner based on the outside air temperature, The capacity of the air conditioner is calculated based on the power consumption, the outside temperature, and the operating mode, so the operating mode can be accurately determined based on the outside temperature, and the capacity of the air conditioner is calculated based on the determined operating mode, outdoor unit capacity information, power consumption, and outside temperature, improving the accuracy of the air conditioner capacity presented as the capacity required for the air conditioner.

[0146] The second aspect of the present disclosure "calculates the capacity of the air conditioner by applying the power consumption and the outdoor temperature to the operation mode determined based on the outdoor temperature and the calculation method determined in accordance with the outdoor unit capacity information," thereby making it possible to identify the calculation method in accordance with the operation mode and the outdoor unit capacity information, thereby improving the accuracy of the air conditioner capacity.

[0147] In the third aspect of the present disclosure, "the control unit determines that the operation mode is cooling when the outside temperature exceeds a predetermined outside temperature threshold, and determines that the operation mode is heating when the outside temperature is equal to or lower than the outside temperature threshold," so that the operation mode can be accurately determined based on the outside temperature, improving the accuracy of the presented capacity of the air conditioner.

[0148] The fourth aspect of the present disclosure is that "if the outside temperature remains above a first outside temperature threshold for a period of time equal to or less than a predetermined threshold, the determination of heating continues, and if the outside temperature remains above the first outside temperature threshold for a period of time longer than the predetermined threshold, the operation mode is determined to be cooling at the time the temperature exceeds the first outside temperature threshold," so that even in intermediate periods such as spring, the operation mode can be accurately determined based on the outside temperature, improving the accuracy of the presented capacity of the air conditioner.

[0149] The fifth aspect of the present disclosure is that "even if the outside temperature does not exceed the first outside temperature threshold for a period longer than a predetermined threshold, if the outside temperature exceeds a second outside temperature threshold that is greater than the first outside temperature threshold, the operation mode is determined to be cooling." Therefore, if the outside temperature exceeds the second outside temperature threshold, it can be immediately determined to be cooling, the operation mode can be accurately determined based on the outside temperature, and the accuracy of the presented capacity of the air conditioner can be improved.

[0150] The sixth aspect of the present disclosure is that "if the outside temperature is below a second outside temperature threshold for a period of time equal to or less than a predetermined threshold, the determination that cooling is the mode continues, and if the outside temperature is below the second outside temperature threshold for a period of time longer than the predetermined threshold, the operation mode is determined to be heating at the time the outside temperature falls below the second outside temperature threshold," so that even in intermediate periods such as autumn, the operation mode can be accurately determined based on the outside temperature, improving the accuracy of the presented capacity of the air conditioner.

[0151] The seventh aspect of the present disclosure is that "even if the outside temperature does not fall below the second outside temperature threshold for a period longer than a predetermined threshold, if the outside temperature falls below a first outside temperature threshold that is lower than the second outside temperature threshold, the operation mode is determined to be heating." Therefore, if the outside temperature falls below the first outside temperature threshold, it can be immediately determined to be heating, the operation mode can be accurately determined based on the outside temperature, and the accuracy of the presented capacity of the air conditioner can be improved.

[0152] In the eighth aspect of the present disclosure, "the control unit determines the operation mode based on the outdoor temperature threshold value associated with the information related to the installation location and the outdoor temperature," so even if air conditioners are installed in various installation locations, the operation mode can be accurately determined based on the outdoor temperature, improving the accuracy of the presented capacity of the air conditioner.

[0153] The ninth aspect of the present disclosure is to "determine the operation mode by inputting the obtained outside temperature and age of the building into a model that has learned the correspondence between the outside temperature, age of the building, and the operation mode," so even if the age of building B in which the air conditioner is installed varies, the operation mode can be accurately determined based on the outside temperature and age of the building, improving the accuracy of the presented capacity of the air conditioner. [Explanation of symbols]

[0154] 10. Air conditioning capacity display system 20 Air conditioner 21~24 Indoor units 31~32 Refrigerant connection piping 40 Outdoor unit 61 Power Sensor 62 Temperature Sensor 63 Operation terminal 70 Control Unit

Claims

1. An air conditioning capacity display system that displays the capacity of an air conditioner, A control unit is provided. The control unit The power consumption of the outdoor unit of the air conditioner and the outdoor air temperature, which is the temperature of the air around the outdoor unit, are acquired; determining an operation mode of the air conditioner based on the outside air temperature; calculating a capacity of the air conditioner based on the power consumption, the outside air temperature, and the operation mode; Air conditioning capacity display system.

2. The control unit calculating the capacity of the air conditioner by applying the power consumption and the outdoor temperature to the operation mode determined based on the outdoor temperature and a calculation method determined in accordance with outdoor unit capacity information; The air conditioning capacity presentation system according to claim 1 .

3. the control unit determines that the operation mode is cooling when the outside air temperature exceeds a predetermined outside air temperature threshold; When the outside air temperature is equal to or lower than the outside air temperature threshold, the operation mode is determined to be heating. The air conditioning capacity presentation system according to claim 1 or 2.

4. The control unit When the operation mode is determined to be heating, If the outside air temperature is above a first outside air temperature threshold for a period of time equal to or less than a predetermined threshold, the determination of heating is continued; If the outside air temperature exceeds the first outside air temperature threshold for a period of time longer than a predetermined threshold, the operation mode is determined to be cooling at the time the outside air temperature exceeds the first outside air temperature threshold. The air conditioning capacity presentation system according to claim 1 or 2.

5. The control unit Even if the outside air temperature does not exceed the first outside air temperature threshold for a period of time longer than the predetermined threshold, When the outside air temperature exceeds a second outside air temperature threshold that is greater than the first outside air temperature threshold, the operation mode is determined to be cooling. The air conditioning capacity presentation system according to claim 4 .

6. The control unit When the operation mode is determined to be cooling, If the outside air temperature is below a second outside air temperature threshold for a period of time equal to or less than a predetermined threshold, the determination of cooling is continued; If the outside air temperature falls below the second outside air temperature threshold for a period of time longer than a predetermined threshold, the operation mode is determined to be heating at the time the outside air temperature falls below the second outside air temperature threshold. The air conditioning capacity presentation system according to claim 1 or 2.

7. The control unit Even if the outside air temperature does not fall below the second outside air temperature threshold for a period of time longer than the predetermined threshold, When the outside air temperature falls below a first outside air temperature threshold that is lower than the second outside air temperature threshold, it is determined that the operation mode is heating. The air conditioning capacity presentation system according to claim 6 .

8. The control unit acquires information about the installation location of the outdoor unit of the air conditioner, The outside air temperature threshold is set in association with information about the installation location, the control unit determines the operation mode based on the outside air temperature threshold associated with the information about the installation location and the outside air temperature. The air conditioning capacity presentation system according to claim 3 .

9. The control unit acquires the age of the building in which the indoor unit of the air conditioner is installed, A model that has learned the correspondence between the outside temperature, the age of the building, and the operation mode, The operation mode is determined by inputting the acquired outside temperature and the building age. The air conditioning capacity presentation system according to claim 1 or 2.

10. A presentation method performed by an air conditioning capacity presentation system that presents the capacity of an air conditioner, The air conditioning capability presentation system includes: A control unit is provided. The control unit A process of acquiring the power consumption of an outdoor unit of an air conditioner and the outdoor air temperature, which is the temperature of the air around the outdoor unit; A process of determining an operation mode of the air conditioner based on the outside air temperature; A process of calculating the capacity of the air conditioner based on the power consumption, the outside air temperature, and the operation mode; A presentation method for doing this.

11. A server capable of communicating via a network with a terminal device that displays the capabilities of an air conditioner having one or more outdoor units and one or more indoor units, A control unit is provided. The control unit The power consumption of the outdoor unit and the outside air temperature, which is the temperature of the air around the outdoor unit, are acquired; determining an operation mode of the air conditioner based on the outside air temperature; calculating a capacity of the air conditioner based on the power consumption, the outside air temperature, and the operation mode; server.

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