JP6509064B2 - Air conditioning equipment selection support system - Google Patents

Description

  The present invention relates to an air conditioning system selection support system for selecting an air conditioning system suitable for a room.

  The technique of patent document 1 is proposed as an air conditioning apparatus selection assistance system which can support selection of an air conditioning apparatus.

  In patent document 1, the environmental condition of the building which installs an air conditioning apparatus, the magnitude | size of a room, and the information regarding the floor plan including the scale of the at least an attached room of a room are received. Also, based on information on room layout, a correction value is obtained from the correction information data for correcting the necessary capacity of the air conditioning and related information, and based on the size of the room and the correction value, it is related to the required capacity of the air conditioning. Correct the number of tatami as information. Then, the necessary capacity of the air conditioning and heating is acquired from the capacity data by environment based on the number of tatami after the correction, the model information of the optimum equipment is acquired from the equipment information data based on the acquired necessary capacity, and output as a selection result Has been proposed.

Patent No. 5480607

  However, in the technique of Patent Document 1, since the correction value of the number of tatami mats is determined in advance by the room arrangement information, there is a prediction of improvement in order to determine the cooling / heating equipment of the load suitable for the actual room.

  The present invention has been made in consideration of the above-mentioned facts, and an object thereof is to select an air-conditioning apparatus suitable for the characteristics of a room.

  In order to achieve the above object, an air conditioning and heating equipment selection support system according to a first aspect stores information on results of usage of the air conditioning and heating equipment and room information related to heat in and out of each room in which the heating and cooling equipment is installed. And a calculating unit that calculates the amount of heat necessary for air conditioning in each room based on the actual performance information and the room information stored in the storage unit, and a plurality of commercially available cooling and heating systems based on the calculation results of the calculating unit. And a selection unit for selecting an air conditioning device suitable for each room from among the devices.

  According to the first aspect, the storage unit stores information related to the use of the air conditioning and heating equipment and room information related to heat in and out of each room in which the air conditioning and heating equipment is installed. For example, the performance information may be cooling / heating operation performance information, and may be information including the heating / cooling operation performance information and the environmental performance information. As the cooling and heating operation result information, at least one of the power consumption per unit time of the cooling and heating device, the operation time, the operation mode, and the set temperature can be applied. As environmental performance information, at least one information of an average temperature per unit time, an average room temperature of each room, and an average amount of solar radiation can be applied. Moreover, room information can apply the information which specifies the heating / cooling apparatus of a room, the heat insulation performance and area for each predetermined site | part of each room, and the information regarding at least 1 room of the ventilation amount and the presence or absence of auxiliary heating.

  The calculation unit calculates the amount of heat necessary for cooling and heating in each room based on the record information and the room information stored in the storage unit. For example, the calculation unit calculates a heat removal amount obtained by adding at least a total through heat amount, a total ventilation heat, and a total solar radiation amount as a heat amount necessary for cooling, adds the total through flow heat amount and the total ventilation heat, The amount of heat inflow minus the amount of heat due to heating is calculated as the amount of heat necessary for heating.

  And in a selection part, the air conditioning apparatus suitable for each room is selected out of several commercially available air conditioning apparatus based on the calculation result of a calculation part. That is, since an air conditioning apparatus is selected based on the actual condition of a room, the air conditioning apparatus according to the characteristic of the room can be selected.

  In addition, you may further provide the presentation part which derives | leads-out and presents the difference of the initial cost at the time of using the air conditioning apparatus selected by the selection part, and the present air conditioning apparatus. In this way, it is possible to present the resident with a judgment material as to whether or not to introduce the selected air conditioning and heating device.

  In addition, a detection unit installed in a building for detecting performance information, a collection unit collecting performance information detected by the detection unit and storing the result information in a storage unit, installed in a building and displaying the setting result of the selection unit And a display unit.

  As described above, according to the present invention, there is an effect that it is possible to select an air conditioning device suitable for the characteristics of the room.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows schematic structure of the air conditioning apparatus selection assistance system which concerns on this embodiment. It is a functional block diagram showing each function of HEMS and HEMS center of a heating and cooling system selection support system concerning this embodiment. It is a flowchart which shows an example of the information collection process performed by HEMS of the air conditioning apparatus selection assistance system which concerns on this embodiment. It is a flowchart which shows an example of the room information input process performed in the HEMS center of the air conditioning apparatus selection assistance system which concerns on this embodiment. It is a flowchart which shows an example of the information acquisition process performed by the HEMS center of the air conditioning apparatus selection assistance system which concerns on this embodiment. It is a flowchart which shows an example of the air conditioning load calculation process performed by the HEMS center of the air conditioning apparatus selection assistance system which concerns on this embodiment. (A) is a figure for demonstrating calculation of the air conditioning load at the time of air conditioning, (B) is a figure for demonstrating calculation of the air conditioning load at the time of heating. It is a flowchart which shows an example of the driving | running efficiency evaluation process performed by the HEMS center of the air conditioning apparatus selection assistance system which concerns on this embodiment. It is a flowchart which shows an example of the apparatus selection assistance process performed by the HEMS center of the air conditioning apparatus selection assistance system which concerns on this embodiment. It is a figure for demonstrating an example of the calculation method of air conditioning load conditions.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a cooling and heating device selection support system according to the present embodiment.

  The air conditioning device selection support system 10 according to the present embodiment is configured to include a home energy management system (HEMS) 12 and an HEMS center 14.

  The HEMS 12 includes an operation unit and a display unit, and also has a function of managing, for example, the use state of power as energy used in a building. Specifically, it has a function of monitoring and displaying the power consumption and the like of each room.

  The HEMS 12 is basically configured as a general computer. That is, although not shown, a CPU, a ROM, a RAM, an input / output port and the like are provided, and they are respectively connected to buses such as a system bus and a data bus. The HEMS display terminal 16 including an operation unit and a display unit, a memory, and the like are connected to the input / output port. The HEMS display terminal 16 may apply a touch panel in which the operation unit and the display unit are integrated, or may be provided with a mechanical switch or the like separately from the display unit. Both mechanical switches may be provided. Also, a touch switch may be applied instead of the mechanical switch. In addition, the HEMS 12 and the HEMS center 14 may be provided with a web server function and displayed on a browser of a general-purpose terminal such as a personal computer, a tablet terminal, or a smartphone.

  Further, the HEMS 12 is connected to the distribution board 18, the heating and cooling equipment 20 installed in each room, the indoor environment sensor 22, the outdoor environment sensor 24, etc., and the HEMS 12 can acquire various information output from each of them. It is done.

  The distribution board 18 supplies the power received from the system power or the like to various loads such as the air conditioning apparatus 20 provided in each room. Moreover, the distribution board 18 is comprised including the sensor which detects the power consumption of loads, such as air conditioning equipment 20 grade | etc., Of each room, detects the power consumption of air conditioning apparatus 20 grade | etc., And outputs the detection result to HEMS12. Have.

  The heating and cooling device 20 is configured to include a configuration controllable by the HEMS 12. For example, the air conditioning device 20 measures the air conditioning operation result information including at least one of the operation mode, the set temperature, the operation time, and the power consumption, and outputs the measurement result to the HEMS 12. The power consumption may output information measured by the distribution board 18.

  The indoor environment sensor 22 is provided indoors, detects a physical quantity related to the indoor environment, and outputs a detection result to the HEMS 12. As the indoor environment sensor 22, for example, at least one of a humidity sensor, a temperature sensor, and a solar radiation amount sensor can be applied. In addition, when room temperature, humidity, etc. can be acquired by an ECHONET Lite (trademark) corresponding | compatible air-conditioner etc., you may substitute the information.

  The outdoor environment sensor 24 is provided outdoors, detects a physical quantity related to the outdoor environment, and outputs a detection result to the HEMS 12. As the outdoor environment sensor, for example, as with the indoor environment sensor, at least one of a humidity sensor, a temperature sensor, and a solar radiation amount sensor can be applied.

  In addition, a network 26 such as the Internet is connected to the HEMS 12 so that exchange of information with the HEMS center 14 connected to the network 26 is enabled.

  The HEMS center 14 receives information from the HEMS 12, accumulates the information, and performs processing for selecting an air conditioner. Moreover, the HEMS center 14 performs the process etc. which selects the air conditioning apparatus 20 suitable for a room based on the information which the HEMS 12 collected.

  Subsequently, the functions of the HEMS 12 and the HEMS center 14 will be described. FIG. 2 is a functional block diagram showing the functions of the HEMS 12 and the HEMS center 14 of the cooling and heating device selection support system 10 according to the present embodiment.

  The HEMS 12 has a heating and cooling operation information collection unit 28 as a function of collecting operation information of the heating and cooling device 20 and an environment information collection unit 30 as a function of collecting environment information. Then, the information collected by the heating / cooling operation information collection unit 28 and the environment information collection unit 30 is transmitted to the HEMS center 14 via the network 26.

  In addition, the HEMS display terminal 16 exchanges information with the HEMS center 14 via the HEMS 12 and displays information transmitted from the HEMS center 14 or the like.

  On the other hand, the HEMS center 14 has, as functions, a processing unit 32 that performs various processes and a data storage unit 46 that stores various data.

  The processing unit 32 includes an air conditioning and heating operation results acquiring unit 34, an environment results acquiring unit 36, an air conditioning and heating load calculating unit 38, a room information input unit 40, an operating efficiency evaluating unit 42, and a device selection support processing unit 44 as functions.

  The cooling and heating operation results acquisition unit 34 acquires the cooling and heating operation information collected by the cooling and heating operation information collection unit 28 of the HEMS 12 from the HEMS 12 as cooling and heating operation results information. The cooling and heating operation result information includes at least one piece of information such as the power consumption per unit time of each cooling and heating device, the operation time, the operation mode, and the set temperature.

  The environmental performance acquisition unit 36 acquires environmental information collected by the environmental information collection unit 30 of the HEMS 12 from the HEMS 12 as environmental performance information. The environmental performance information includes at least one piece of information such as an average temperature per unit time, an average room temperature of each room, and an average amount of solar radiation.

  The cooling and heating load calculation unit 38 calculates the amount of heat necessary for cooling and heating based on the information on each room, the environmental performance information, and the like. Specifically, the cooling and heating load calculation unit 38 calculates the amount of heat removed from the room at the time of cooling by the cooling and heating device 20 (cooling load) and the amount of heat at the heating stage when heated (heating load) as cooling and heating load result information.

  The room information input unit 40 is information specifying the room heating and cooling equipment 20, heat insulation performance and area of each predetermined part of each room (a roof, a ceiling, an outer wall, an inner wall, a floor, an opening, etc.), and a ventilation amount. And room information etc. related to heat in / out of the room including at least one of presence / absence of auxiliary heating. For example, the room information is input by operating the keyboard or the like. The input room information is used in calculation of the heating and cooling load and the like.

  The operation efficiency evaluation unit 42 calculates the rated operation rate, the operation efficiency, the cumulative operation time, and the like of the air conditioning and heating device 20, and evaluates whether it is necessary to select the air conditioning and heating device 20.

  The device selection support processing unit 44 performs processing to support the selection of the air conditioning and heating device 20 when the operation efficiency evaluation unit 42 evaluates that the device selection support is necessary. In the present embodiment, the air conditioning and heating load result information is statistically processed to calculate the air conditioning and heating load condition required in the room, and the air conditioning device 20 meeting the calculated air conditioning and heating load condition is selected. Perform simulations using environmental performance information. Then, the simulation result is transmitted to the HEMS 12, and processing for displaying the result on the HEMS display terminal 16 is performed. As a simulation, for example, the initial cost in the case of using the selected air conditioning and heating device 20, the difference in the running cost with the current air conditioning and heating device 20, and the like are derived.

  Further, the data storage unit 46 stores the cooling and heating operation record information acquired by the cooling and heating operation record acquiring unit 34, the environmental record information acquired by the environmental record acquiring unit 36, and the cooling and heating load record information calculated by the cooling and heating load calculation unit 38. Ru. Furthermore, in the data storage unit 46, information on the room inputted by the room information input unit 40 is stored, and at the same time, a plurality of types of commercially available air conditioning equipment information are stored. In addition, commercially available air conditioning equipment information may be collected from, for example, an electric maker or the like via the network 26, or may be input in advance using a keyboard or the like.

  Subsequently, a specific processing example performed by the cooling and heating device selection support system 10 according to the present embodiment configured as described above will be described.

  First, specific processing performed by the HEMS 12 will be described. FIG. 3 is a flowchart showing an example of the information collection process performed by the HEMS 12 of the cooling and heating device selection support system 10 according to the present embodiment. The process in FIG. 3 starts, for example, at predetermined time intervals.

  In step 100, the heating and cooling operation information collection unit 28 measures the power consumption of each of the air conditioning and heating devices 20 during a unit time to collect information, and the process proceeds to step 102. For example, the cooling and heating operation information collection unit 28 measures the power consumption of each of the cooling and heating devices 20 using the function of measuring the power consumption of the distribution board 18.

  In step 102, the heating and cooling operation information collection unit 28 measures the operation time of each of the air conditioning and heating devices 20 during the unit time to collect information, and the process proceeds to step 104. For example, when the cooling and heating operation information collection unit 28 measures the power consumption of each cooling and heating device 20 using the measurement function of the power consumption of the distribution board 18, the operating time is also measured simultaneously.

  In step 104, the heating and cooling operation information collection unit 28 learns information from the heating and cooling equipment 20 to record the operation mode and the set temperature of each heating and cooling equipment 20 in a unit time, and proceeds to step 106.

  In step 106, the environment information collection unit 30 calculates the average outdoor air temperature during the operation time of each of the air conditioning and heating devices 20, and proceeds to step 108. That is, based on the information acquired by the environmental information collection unit 30 from the outdoor environment sensor 24, the average outdoor air temperature during the operation time of each of the air conditioning and heating devices 20 is calculated.

  In step 108, the environment information collection unit 30 calculates the average room air temperature during the operation time of each of the air conditioning and heating devices 20, and proceeds to step 110. That is, based on the information acquired by the environment information collection unit 30 from the indoor environment sensor 22, the average indoor air temperature during the operation time of each of the air conditioning and heating devices 20 is calculated.

  In step 110, the environmental information collection unit 30 calculates the average amount of solar radiation during the operation time of each of the air conditioning and heating devices 20, and proceeds to step 112. That is, based on the information acquired from the indoor environment sensor 22 by the environment information collecting unit 30, the average amount of solar radiation during the operation time of each of the air conditioning and heating devices 20 is calculated.

  In step 112, the HEMS 12 transmits the cooling and heating operation information collected by the heating and cooling operation information collection unit 28 and the environment information collected by the environment information collection unit 30 to the HEMS center 14, and the series of information collection processing ends.

  Next, specific processing performed by the HEMS center 14 will be described. FIG. 4 is a flowchart showing an example of a room information input process performed by the HEMS center 14 of the cooling and heating device selection support system 10 according to the present embodiment. The process in FIG. 4 starts, for example, when an instruction to input room information is issued by the room information input unit 40 of the HEMS center 14.

  In step 150, a screen for inputting materials and areas of the roof, ceiling, outer wall, and inner wall is displayed on a monitor or the like of the HEMS center 14, and the process proceeds to step 152.

  In step 152, it is determined whether or not the material and area displayed on the screen have been input by the room information input unit 40, and the process waits until the determination is affirmative, and the process moves to step 154.

  In step 154, a screen for inputting the material, area, orientation, and heat insulation information of the opening is displayed on a monitor or the like of the HEMS center 14, and the process proceeds to step 156.

  In step 156, it is determined whether or not each piece of information on the opening displayed on the screen has been input by the room information input unit 40, and the process waits until the determination is affirmed and proceeds to step 158.

  In step 158, a screen for inputting ventilation volume and ventilation performance per unit time is displayed on the monitor of the HEMS center 14 or the like, and the process proceeds to step 160.

  In step 160, it is determined whether or not the ventilation information displayed on the screen has been input by the room information input unit 40, and the process waits until the determination is affirmed and shifts to step 162.

  In step 162, a screen for inputting the presence or absence of auxiliary cooling and heating, the operation frequency, and the capacity is displayed on a monitor or the like of the HEMS center 14, and the process proceeds to step 164.

  In step 164, it is determined whether or not the auxiliary cooling and heating information displayed on the screen is input by the room information input unit 40, and the process waits until the determination is affirmed and shifts to step 166.

  In step 166, a screen for inputting information on the adjacent room is displayed on a monitor or the like of the HEMS center 14, and the process moves to step 168.

  In step 168, it is determined whether the adjacent room information displayed on the screen is input by the room information input unit 40, and the process waits until the determination is affirmed and shifts to step 170.

  In step 170, the room information input unit 40 stores the information input in each of the above-described steps as room information in the data storage unit 46, and the series of room information input processing ends.

  FIG. 5 is a flowchart showing an example of the information acquisition process performed by the HEMS center 14 of the cooling and heating device selection support system 10 according to the present embodiment. In addition, the process of FIG. 5 starts, when heating / cooling operation information and environmental information are transmitted from HEMS12.

  In step 200, the power consumption of each air conditioning device during unit time, the operation time, the operation mode, and the set temperature, which are transmitted from the HEMS 12, are stored in the data storage unit 46 as air conditioning operation result information, and the process proceeds to step 202.

  In step 202, the average outdoor air temperature, the average amount of solar radiation, and the average indoor air temperature during the operation time of each air conditioner 20 transmitted from the HEMS 12 are stored in the data storage unit 46 as environmental performance information, and a series of information acquisition processing finish.

  FIG. 6 is a flowchart showing an example of the heating and cooling load calculation process performed by the HEMS center 14 of the cooling and heating device selection support system 10 according to the present embodiment. The process of FIG. 6 may be started, for example, each time the above-described information acquisition process is performed, or may be started when a predetermined time has come.

  In step 250, the cooling and heating load calculation unit 38 extracts environmental performance information during the operation time of the cooling and heating device 20 in unit time from the environmental performance information stored in the data storage unit 46, and proceeds to step 252.

  In step 252, the heating and cooling load calculation unit 38 extracts room information of the room in which the heating and cooling device 20 is installed from the room information stored in the data storage unit 46 and shifts to step 254.

  In step 254, the heating and cooling load calculation unit 38 calculates the heating and cooling load during the operation time of the heating and cooling device 20 in unit time, and shifts to step 256. In addition, calculation of an air conditioning load may be calculated only using air-conditioning operation performance information, and you may calculate using air-conditioning operation performance information and environmental performance information like the following calculation methods.

  In step 256, the cooling and heating load calculation unit 38 stores the calculation result of the cooling and heating load in the data storage unit 46 as the cooling and heating load result information, and ends the series of cooling and heating load calculation processing.

  Here, the calculation method of the heating and cooling load by the heating and cooling load calculation unit 38 will be specifically described. FIG. 7A is a diagram for explaining the calculation of the heating and cooling load at the time of cooling, and FIG. 7B is a diagram for explaining the calculation of the heating and cooling load at the time of heating.

  The cooling and heating load at the time of cooling is obtained by calculating the amount of heat removed from the room at the time of cooling.

  The heat removal amount is the sum of the total through-flow heat amount, the total ventilation heat amount, the total solar radiation amount, and the heat amounts of other heat sources (total through-flow heat amount = total ventilation heat amount + total solar radiation amount + other heat source heat amount). The other heat source heat quantity is added only when it exists.

  The total through-flow heat quantity at the time of cooling is obtained from the through-flow heat quantity of each of the window (opening), the outer wall, the roof and ceiling, the inner wall, and the floor shown in FIG.

Specifically, the amount of through-flow heat of the window (opening) is the amount of through-flow heat (W) = window area of the corresponding room (m ² ) × heat transmissivity (window) (W / m ² K) × indoor / outdoor temperature difference Calculated by (K).

The amount of solar radiation heat of the window (opening) is determined by the following equation: solar radiation heat amount (W) = window area of the room (m ² ) × solar radiation amount (W / m ² ) × cutoff coefficient × azimuth coefficient.

The amount of through-flow heat of the outer wall is determined by the amount of through-flow heat (W) = area of the portion in contact with the outer wall (m ² ) × heat transmissivity (outer wall) (W / m ² K) × temperature difference inside and outside the room (K).

The amount of through-flow heat of the roof and the ceiling is determined by the amount of through-flow heat (W) = area in contact with the roof (m ² ) × heat transmissivity (roof) (W / m ² K) × indoor / outdoor temperature difference (K).

The amount of through-flow heat of the inner wall is determined by the amount of through-flow heat (W) = the area of the inner wall (m ² ) × the heat transmission coefficient (inner wall) (W / m ² K) × the temperature difference with the adjacent chamber (K).

The amount of through-flow heat of the bed is determined by the amount of through-flow heat (W) = the area of the bed (m ² ) × the heat transmission coefficient (bed) (W / m ² K) × the temperature difference with the adjacent chamber (K).

The amount of heat of ventilation is obtained from the amount of heat of ventilation (W) = C _p × Y × the amount of ventilation (m ³ ) × the temperature difference inside and outside the room (K). Here, C _p = constant pressure specific heat of air (W / kg K), Y = weight of air specific weight (kg / m ³ ).

  Other heat sources may be added as needed. Other heat sources include, for example, lighting load, human body load, house equipment load, heat storage load, heat flow between rooms, and heat transfer due to door opening and closing. Moreover, the physical quantity regarding environment, such as a temperature difference and the amount of solar radiation used at the time of heat removal calculation, uses the average value per unit time, such as 1 hour, for example.

  On the other hand, the heating and cooling load at the time of heating is obtained by calculating the amount of heat inflowing at the time of heating.

  The amount of heat inflow is the sum of the amount of total heat of throughflow and the total amount of heat of ventilation, minus the total amount of solar radiation, the amount of heat from auxiliary heating, and the amount of heat from other heat sources Amount-heat from auxiliary heating-other heat source heat). In addition, other heat source heat quantity is deducted only when it exists.

  The total through-flow heat quantity at the time of heating is determined from the through-flow heat quantity of each of the window (opening), the outer wall, the roof and ceiling, the inner wall, and the floor shown in FIG. 7 (B).

Specifically, the amount of through-flow heat of the window (opening) is the amount of through-flow heat (W) = window area of the corresponding room (m ² ) × heat transmissivity (window) (W / m ² K) × indoor / outdoor temperature difference Calculated by (K).

The amount of solar radiation heat of the window (opening) is determined by the following equation: solar radiation heat amount (W) = window area of the room (m ² ) × solar radiation amount (W / m ² ) × cutoff coefficient × azimuth coefficient.

The amount of through-flow heat of the outer wall is determined by the amount of through-flow heat (W) = area of the portion in contact with the outer wall (m ² ) × heat transmissivity (outer wall) (W / m ² K) × temperature difference inside and outside the room (K).

The amount of through-flow heat of the roof and the ceiling is determined by the amount of through-flow heat (W) = area in contact with the roof (m ² ) × heat transmissivity (roof) (W / m ² K) × indoor / outdoor temperature difference (K).

The amount of through-flow heat of the inner wall is determined by the amount of through-flow heat (W) = the area of the inner wall (m ² ) × the heat transmission coefficient (inner wall) (W / m ² K) × the temperature difference with the adjacent chamber (K).

The amount of through-flow heat of the bed is determined by the amount of through-flow heat (W) = the area of the bed (m ² ) × the heat transmission coefficient (bed) (W / m ² K) × the temperature difference with the adjacent chamber (K).

The amount of heat of ventilation is obtained from the amount of heat of ventilation (W) = C _p × Y × the amount of ventilation (m ³ ) × the temperature difference inside and outside the room (K). Here, C _p = constant pressure specific heat of air (W / kg K), Y = weight of air specific weight (kg / m ³ ).

  The heat amount of the auxiliary heating is determined by the auxiliary heating heat amount (W) = auxiliary heating consumption energy × energy conversion efficiency.

  Other heat sources may be added as needed. Other heat sources include, for example, lighting load, human body load, house equipment load, heat storage load, heat flow between rooms, and heat transfer due to door opening and closing. Moreover, the physical quantity regarding environment, such as a temperature difference and the amount of solar radiation used at the time of inflow heat amount calculation, uses the average value per unit time, such as 1 hour, for example.

  FIG. 8 is a flowchart showing an example of the operation efficiency evaluation process performed by the HEMS center 14 of the cooling and heating device selection support system 10 according to the present embodiment. The process of FIG. 8 starts, for example, every predetermined period (every day, every week, and so on).

  In step 300, the operation efficiency evaluation unit 42 calculates a rated operation rate (rated operation ratio during the operation time of the air conditioning and heating device 20), and shifts to step 302.

  In step 302, it is determined whether the rated operation rate calculated by the operation efficiency evaluation unit 42 is equal to or greater than a predetermined value. If the determination is negative, the process proceeds to step 304, and if the determination is affirmative, the process proceeds to step 312.

  In step 304, the operation efficiency evaluation unit 42 calculates the operation efficiency (heating / cooling load / power consumption), and proceeds to step 306.

  In step 306, it is determined whether the driving efficiency calculated by the driving efficiency evaluation unit 42 has deteriorated by a predetermined value or more. If the determination is negative, the process proceeds to step 308, and if the determination is affirmative, the process proceeds to step 312.

  In step 308, the operating efficiency evaluation unit 42 calculates the accumulated operating time of the air conditioning and heating device 20, and proceeds to step 310.

  In step 310, it is determined whether the accumulated operating time calculated by the operating efficiency evaluation unit 42 is equal to or greater than a predetermined value determined in advance. If the determination is negative, the series of operation efficiency evaluation processing ends, and if the determination is positive, the process proceeds to step 312.

  In step 312, the device selection support processing unit 44 of the HEMS center 14 performs device selection support processing, and the series of operation efficiency evaluation processing ends.

  Here, the device selection support processing by the device selection support processing unit 44 will be described. FIG. 9 is a flowchart showing an example of the device selection support process performed by the HEMS center 14 of the cooling and heating device selection support system 10 according to the present embodiment.

  In step 350, the device selection support processing unit 44 extracts the cooling and heating load record information stored in the data storage unit 46 and shifts to step 352.

  In step 352, the cooling / heating load result information extracted by the device selection support processing unit 44 is statistically processed to calculate the cooling / heating load condition, and the process proceeds to step 354. For example, as shown in FIG. 10, the appearance frequency for each heating and cooling load is determined, and the heating and cooling load covering a predetermined ratio such as 90% of the appearance frequency is calculated as the heating and cooling load condition. In addition, FIG. 10 is a figure for demonstrating an example of the calculation method of heating / cooling load conditions.

  In step 354, the heating / cooling equipment 20 meeting the cooling / heating load condition calculated by the equipment selection support processing unit 44 is extracted from the commercially available cooling / heating equipment information stored in the data storage unit 46, and the process proceeds to step 356. Thereby, the air conditioning apparatus 20 suitable for an actual use condition can be selected.

  In step 356, the cooling and heating equipment 20 extracted by the equipment selection support processing unit 44 is simulated in the actual use situation, and the process proceeds to step 358. For example, running costs such as power consumption and electricity charges are calculated when a simulation of the cooling and heating device 20 extracted using the cooling and heating operation performance information and the environmental performance information stored in the data storage unit 46 is performed.

  In step 358, the device selection support processing unit 44 transmits the result of the simulation to the HEMS 12, and the series of device selection support processing ends. Thus, the HEMS 12 can present the simulation result transmitted from the HEMS center 14 to the HEMS display terminal 16 so that the resident of the building can make a proposal for an air conditioner suitable for the room. In addition, the resident can use the simulation result as a judgment material on whether to introduce the selected air conditioning and heating equipment.

  In the above embodiment, an example in which the information collected by the HEMS 12 is stored in the HEMS center 14 and the HEMS center 14 selects and presents the cooling and heating equipment 20 has been described. However, all the functions illustrated in FIG. May be provided in the HEMS 12. That is, the HEMS 12 installed in each building may perform processing from the collection of information such as the air conditioning operation result information and the environmental performance information to the process of selecting the air conditioning device 20.

  Further, each process performed by the HEMS 12 or the HEMS center 14 in the above embodiment may be stored as a program in a storage medium or the like and distributed.

  Further, the present invention is not limited to the above, and it goes without saying that the present invention can be variously modified and implemented without departing from the scope of the invention other than the above.

10 air conditioning equipment selection support system 12 HEMS
14 HEMS Center 16 HEMS Display Terminal 18 Distribution Board 20 Air Conditioner 22 Indoor Environment Sensor 24 Outdoor Environment Sensor 28 Air Conditioning Operation Information Collection Unit 30 Environment Information Collection Unit 32 Processing Unit 34 Air Conditioning Operation Result Acquisition Unit 36 Environment Result Acquisition Unit 38 Air Conditioning Load Calculation unit 40 Room information input unit 42 Operation efficiency evaluation unit 44 Equipment selection support processing unit 46 Storage unit

Claims (4)

A storage unit for storing record information on the use of the heating and cooling equipment and room information relating to heat in and out of each room in which the heating and cooling equipment is installed;
A calculation unit that calculates the amount of heat necessary for cooling and heating in each room based on the performance information and the room information stored in the storage unit;
A selection unit for selecting an air conditioning device suitable for each room from among a plurality of air conditioning devices commercially available based on the calculation result of the calculation unit;
Air-conditioning equipment selection support system equipped with   The heating and cooling equipment selection support system according to claim 1, further comprising: a presentation unit that derives and presents a difference between the initial cost when using the cooling and heating equipment selected by the selection unit and the running cost with the current heating and cooling equipment. . The calculation unit calculates a heat removal amount obtained by adding at least a total through flow heat amount, a total ventilation heat amount, and a total solar radiation amount as a heat amount necessary for cooling.
The heating and cooling equipment selection support system according to claim 1 or 2, wherein the total inflow heat amount and the total ventilation heat amount are added, and the inflow heat amount obtained by subtracting at least the total solar radiation amount and the heat amount due to auxiliary heating is calculated as heat amount necessary for heating. A detection unit installed in a building for detecting the performance information, a collection unit collecting the performance information detected by the detection unit and storing the result information in the storage unit, and a setting result installed in a building for the selection unit The air-conditioning equipment selection support system according to any one of claims 1 to 3, further comprising: a display unit for displaying

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