JP2012007868A - Air conditioning control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the total energy cost of a building covered by a demand contract.SOLUTION: An air conditioning control device premises a controller 70 for controlling GHP10 and EHP 40. GHP10 has a compressor 111 with a gas engine 111a as a power source for air-conditioning of an air-conditioned space S in the building for which a gas demand contract and an electric power demand contract are made. EHP40 has a compressor 411 with an electric motor 411a as a power source for air-conditioning of the air-conditioned space S together with GHP10. The controller 70 has a storing part determined by the gas demand contract and the electric power demand contract and storing a contract gas amount at a first demand time limit and a contract electric energy at a second demand time limit, and a control part for performing control of GHP10 and EHP40 on the basis of the contract gas amount and the contract electric energy so that the total energy cost of gas charge of GHP10 and power rates of EHP40 is suppressed.

Description

  The present invention relates to an air conditioning control device.

  Conventionally, for example, a gas heat pump air conditioner (hereinafter referred to as GHP) that uses a gas engine as a drive source of a compressor, such as an air conditioning control system disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2007-187342), and a compressor An electric heat pump air conditioner (hereinafter referred to as EHP) that uses an electric motor as a drive source is mixedly arranged in an air-conditioned space such as a floor space of a building, and the two are controlled in conjunction with each other. An air conditioning control system that performs air conditioning of an air conditioned space has been proposed. In this air conditioning control system, EHP-based control is disclosed in which the energy cost of EHP is reduced by taking into consideration the demand for power and reducing the power consumption of EHP.

  In an air conditioning control system in which GHP and EHP are mixed and controlled in an air-conditioned space, it is conceivable that the operation time of GHP increases by suppressing the power consumption of EHP.

  However, in buildings where GHP and EHP exist in the air-conditioned space, it is assumed that not only electric power companies but also gas companies have signed demand contracts. There is a risk of increasing energy costs. That is, even if the energy cost of EHP can be suppressed, there is a concern that the total energy cost will rise.

  Accordingly, an object of the present invention is an air-conditioning control apparatus for controlling GHP and EHP that performs air-conditioning of an air-conditioned space in a building for which a demand contract is made, and is capable of suppressing total energy cost. To provide an apparatus.

  The air conditioning control device according to the first aspect of the present invention is premised on an air conditioning control device that controls a gas heat pump air conditioner and an electric heat pump air conditioner. The gas heat pump air conditioner has a first compressor that uses a gas engine as a power source in a building for which a gas demand contract and a power demand contract are made, and air-conditions the air-conditioned space. The electric heat pump air conditioner has a second compressor that uses an electric motor as a power source, and air-conditions the air-conditioned space together with the gas heat pump air conditioner. The air conditioning control device includes a storage unit and a control unit. The storage unit stores the contract gas amount in the first demand time period and the contract power amount in the second demand time period. The contract gas amount in the first demand time period is determined by the gas demand contract. The contract power amount in the second demand time period is determined by the power demand contract. The control unit controls the gas heat pump air conditioner and the electric heat pump air conditioner based on the contract gas amount and the contract power amount. The control unit performs control so that the total energy cost of the gas charge of the gas heat pump air conditioner and the electric charge of the electric heat pump air conditioner is suppressed.

  In the air conditioning control device according to the first aspect of the present invention, the total energy cost can be suppressed.

  An air conditioning control device according to a second aspect of the present invention is the air conditioning control device according to the first aspect, wherein the control unit contracts the gas consumption of the gas-type equipment including the gas heat pump air conditioner in the first demand period. Control is performed so as not to exceed the amount of gas, and in the second demand period, the power consumption of the electric equipment including the electric heat pump air conditioner does not exceed the contracted power amount.

  In the air conditioning control device according to the second aspect of the present invention, the gas consumption of the gas type equipment including the gas heat pump air conditioner and the power consumption of the electric type equipment including the electric heat pump air conditioner are the contracted amount ( By controlling so as not to exceed the contract gas amount and the contract power amount, it is possible to suppress an increase in the gas charge and the power charge.

  An air conditioning control device according to a third aspect of the present invention is the air conditioning control device according to the first aspect or the second aspect, wherein the control unit includes a predicted consumption calculation unit, a first driving ability suppression control unit, 2 It has a driving capability suppression control part and a balance determination part. The consumption prediction amount calculation unit is configured to calculate a total gas consumption prediction amount that is a gas consumption prediction amount of the first demand time period at the end of the first demand time period, and a power consumption prediction amount of the second demand time period at the time of the end of the second demand time period. And a predicted total power consumption amount. A 1st driving capability suppression control part suppresses the driving capability of a gas heat pump air conditioner, when it determines with the total gas consumption estimated amount exceeding contract gas amount. The second operating capacity suppression control unit suppresses the operating capacity of the electric heat pump air conditioner when determining that the total power consumption prediction amount exceeds the contracted power amount. The balance determination unit determines the operation balance of the gas heat pump air conditioner and the electric heat pump air conditioner.

  In the air conditioning control device according to the third aspect of the present invention, first, the total gas consumption predicted amount and the total power consumption predicted amount are respectively controlled by the control by the first driving capability suppression control unit and the control by the second driving capability suppression control unit. The contract gas amount and the contract power amount can be prevented from exceeding. In addition, the balance determination unit determines the operation balance of the gas heat pump air conditioner and the electric heat pump air conditioner, so that the air conditioning by the air conditioner whose operation capability is suppressed by the first operation capability suppression control and the second operation capability suppression control. The minutes can be supplemented by the other air conditioner. Therefore, it is possible to suppress a decrease in user comfort while suppressing the total energy cost.

  The air conditioning control device according to the fourth aspect of the present invention is the air conditioning control device according to the first aspect to the third aspect, and even when one of the gas heat pump air conditioner and the electric heat pump air conditioner can be stopped, Both the gas heat pump air conditioner and the electric heat pump air conditioner are operated.

  In the air conditioning control device according to the fourth aspect of the present invention, for example, even if the air conditioning load in the air-conditioned space is low and one of the gas heat pump air conditioner and the electric heat pump air conditioner can be stopped, drive. Thereby, the temperature nonuniformity of an air-conditioned space can be suppressed. In addition, by operating the air conditioner that can be stopped with, for example, a weak operation or a driving ability close to a weak operation, temperature unevenness can be suppressed while considering suppression of the total energy cost.

  An air conditioning control device according to a fifth aspect of the present invention is the air conditioning control device according to the first aspect, wherein the storage unit further stores a first excess cost and a second excess cost, and the control unit A prediction amount calculation unit; and a control command generation unit. The first excess cost is an energy cost when the gas consumption amount of the gas type equipment including the gas heat pump air conditioner exceeds the contract gas amount. The second excess cost is an energy cost when the electric power consumption of the electric equipment including the electric heat pump air conditioner exceeds the contract electric power. The consumption prediction amount calculation unit is configured to calculate a total gas consumption prediction amount that is a gas consumption prediction amount of the first demand time period at the end of the first demand time period, and a power consumption prediction amount of the second demand time period at the time of the end of the second demand time period. And a predicted total power consumption amount. The control command generation unit operates the lower one of the first excess cost and the second excess cost when the total gas consumption prediction amount exceeds the contract gas amount and the total power consumption prediction amount exceeds the contract power amount. A control command is generated.

  In the air conditioning control device according to the fifth aspect of the present invention, even when the gas consumption and the power consumption exceed the contract gas amount and the contract power amount, respectively, the energy when the consumption exceeds the contract amount By driving the one with the cheaper excess cost, the total energy cost can be suppressed.

  The air conditioning control device according to the sixth aspect of the present invention is the air conditioning control device according to the first aspect to the fifth aspect, and the first demand time period and the second demand time period are different and partly overlap.

  In the air-conditioning control apparatus according to the sixth aspect of the present invention, the first demand time period and the second demand time period are different, and a part of them overlaps, so that the time difference can be used effectively and the total energy cost can be suppressed. The gas heat pump air conditioner and the electric heat pump air conditioner can be controlled.

  In the air conditioning control device according to the first aspect of the present invention, the total energy cost can be suppressed.

  In the air conditioning control device according to the second aspect of the present invention, it is possible to suppress an increase in gas charges and power charges.

  In the air conditioning control device according to the third aspect of the present invention, it is possible to suppress a decrease in user comfort while suppressing the total energy cost.

  In the air conditioning control device according to the fourth aspect of the present invention, the air conditioner that can be stopped is operated with, for example, a weak operation or an operation capability close to a weak operation, thereby reducing temperature unevenness while considering suppression of the total energy cost. Can be suppressed.

  In the air conditioning control device according to the fifth aspect of the present invention, even when the gas consumption and the power consumption exceed the contract gas amount and the contract power amount, respectively, the energy when the consumption exceeds the contract amount By driving the one with the cheaper excess cost, the total energy cost can be suppressed.

  In the air conditioning control device according to the sixth aspect of the present invention, it is possible to control the gas heat pump air conditioner and the electric heat pump air conditioner so as to suppress the total energy cost by effectively using the time difference.

1 is a schematic application diagram of an air conditioning control system according to an embodiment of the present invention. The schematic block diagram of an air-conditioning control system. The schematic block diagram of the controller which concerns on 1st Embodiment. The flowchart which shows the process of the controller which concerns on 1st Embodiment. The graph which showed an example of the air-conditioning control of GHP and EHP by the controller in 1st Embodiment using the cumulative gas consumption and the cumulative power consumption. The graph which shows the driving | running state of GHP and EHP according to the air-conditioning load of an air-conditioned space in 1st Embodiment (when performing control like 2nd Embodiment). The graph which shows the driving | running state of GHP and EHP according to the air-conditioning load of the to-be-conditioned space in 2nd Embodiment. The schematic block diagram of the controller which concerns on 2nd Embodiment. The flowchart which shows the process of the controller which concerns on 2nd Embodiment. The schematic block diagram of the controller which concerns on 3rd Embodiment. The graph which shows the driving | running state of GHP and EHP according to the air-conditioning load of the to-be-conditioned space in 3rd Embodiment. The flowchart which shows the process of the controller which concerns on 3rd Embodiment. The schematic block diagram of the controller which concerns on 4th Embodiment. The flowchart which shows the process of the controller which concerns on 4th Embodiment.

  Hereinafter, an air conditioning control system 100 according to an embodiment of the present invention will be described with reference to the drawings. The following embodiments are specific examples of the present invention and do not limit the technical scope of the present invention.

<First Embodiment>
(1) Overall Schematic Configuration of Air Conditioning Control System 100 FIG. 1 is a schematic application diagram of an air conditioning control system 100 according to an embodiment of the present invention.

  As shown in FIG. 1, the air conditioning control system 100 is a control system for air conditioning the air-conditioned space S with each room of the building B as the air-conditioned space S. The number of floors of building B is not limited to that shown in FIG.

  The air conditioning control system 100 mainly includes a gas heat pump air conditioner (hereinafter referred to as GHP) 10, an electric heat pump air conditioner (hereinafter referred to as EHP) 40, and a controller 70 that monitors and controls the GHP 10 and the EHP 40. ing.

  The indoor unit 12 of the GHP 10 and the indoor unit 42 of the EHP 40 are installed on the ceiling or wall of the air-conditioned space S. That is, the indoor unit 12 of the GHP 10 and the indoor unit 42 of the EHP 40 are mixed in the air-conditioned space S, and these air-conditioning the air-conditioned space S in cooperation with each other. The outdoor unit 11 of the GHP 10 and the outdoor unit 41 of the EHP 40 are installed outdoors in the building B. The controller 70 is disposed in the control room C of the building B. The number and arrangement of the indoor units 12 of the GHP 10 and the indoor units 42 of the EHP 40 are not limited to those shown in FIG. 1, and various changes may be made depending on the size of the air-conditioned space S and the number of air-conditioned spaces S. Is possible.

  The GHP 10 and the controller 70 are connected via a dedicated communication line 5, and bidirectional communication is possible. The EHP 40 and the controller 70 are connected via a dedicated communication line 5, and bidirectional communication is possible.

  In the air conditioning control system 100, the controller 70 monitors and controls the GHP 10 and the EHP 40 under the above configuration, thereby air-conditioning the air-conditioned space S, that is, air-conditioning the air-conditioned space S.

  Here, in the air conditioning control system 100, although specific control will be described later, control is performed such that the total energy cost of the GHP 10 and the EHP 40 is suppressed. Therefore, the energy cost of GHP10 and EHP40 is demonstrated easily.

(1-1) Generation of charges related to energy consumption of GHP10 and EHP40 When an air conditioner using a gas engine 111a (described later) as a drive source such as GHP10 is used, a gas charge is charged as its energy cost, When an air conditioner that uses an electric motor 411a (corresponding to an electric motor, which will be described later) as a drive source such as EHP is used, a power charge is charged as its energy cost.

  Both the gas charge and the power charge are usually calculated by the sum of the basic charge and the metered charge. These calculation methods will be described below.

(1-2) Gas Demand Contract and Electricity Demand Contract In the air conditioning control system 100, the manager of the building B, etc., with the gas company and the sales person of the electric power company, respectively, the gas demand contract and the electric power demand, respectively. I have a contract.

  The gas demand contract simply means that the gas consumption of the gas-type equipment including GHP10 (such as floor heating etc. as gas-type equipment other than GHP10) is between building B and the gas company. As long as it does not exceed a certain amount of contract gas (described below), the contract can be held at a certain basic charge.

Specifically, first, the basic price of gas charges can be used at the maximum in the gas demand time limit ((in this embodiment, 1 hour) (corresponding to the first demand time limit)) defined in the gas demand contract. It is calculated by multiplying the contract gas amount by the unit price. Therefore, in the gas demand contract, the basic charge of the gas charge is determined by the maximum gas consumption in the gas demand time unit for the past one year. The unit price here is a charge of gas consumption per 1 m ³ that varies depending on the gas consumption. The metered charge of the gas charge is calculated by multiplying the unit price by the gas consumption.

  In simple terms, the power demand contract means that the power consumption of electrical equipment including EHP 40 (such as lighting equipment and the like as electrical equipment other than EHP 40) is between building B and the power company. It does not exceed the fixed contract power amount (maximum amount of power that can be used in the power demand time limit (30 minutes in this embodiment) (corresponding to the second demand time limit) defined in the power demand contract). As far as the contract is concerned, it can be reduced to a fixed basic charge.

  Specifically, the basic charge of the power charge is determined by the maximum power consumption amount in the power demand time unit for the past year.

  More specifically, for each power demand period, a total power consumption (described later) for each power demand period of the electrical equipment including the EHP 40 installed in the building B is calculated, and this total power consumption Of these, the basic charge of the power charge is determined based on the maximum power consumption that is the largest in the past year. Therefore, if the total power consumption exceeds the contracted power consumption even once in a certain month, the total power consumption exceeding this contracted power consumption becomes the maximum power consumption. In one year, the basic charge based on the maximum power consumption will be paid to the power company (of course, if the maximum power consumption is newly updated during the year, the basic charge based on this will be Calculated, and for the next year, another basic fee will be paid). The metered charge of the power charge is calculated by multiplying the unit price per unit and the power consumption.

  In any demand contract, when returning the increased basic charge, the contract gas amount initially determined between the building B, the gas company, and the power company throughout the year from the month when the basic charge increased. It is necessary not to exceed the contracted power consumption.

  Hereinafter, the structure of each part which mainly comprises the air-conditioning control system 100 is demonstrated, referring drawings suitably.

(2) Configuration of Each Part (2-1) Configuration of GHP 10 FIG. 2 is a schematic configuration diagram of the air conditioning control system 100. Hereinafter, the configuration of the GHP 10 will be described with reference to FIG.

  As shown in FIG. 2, the GHP 10 mainly includes an outdoor unit 11, a plurality of indoor units 12, and a refrigerant pipe 13 that connects the outdoor unit 11 and the indoor unit 12. The outdoor unit 11 and the indoor unit 12 have an outdoor refrigerant circuit 140a and an indoor refrigerant circuit 140b, respectively, and are connected by a refrigerant pipe 13 to form one refrigerant circuit 14. . In the outdoor unit 11, devices constituting the outdoor refrigerant circuit 140 a such as the compressor 111, the outdoor heat exchanger 112, and the four-way switching valve 113 and the outdoor fan 114 are accommodated, and in the indoor unit 12, The apparatus which comprises the indoor side refrigerant circuit 140b, such as the indoor heat exchanger 121 and the expansion valve 122, and the indoor fan 123 are accommodated. Here, the compressor 111 uses the gas engine 111a adjacent to the compressor body 111b as a power source. The compressor 111 is operated by driving the gas engine 111a with fuel gas supplied from outside. The compressor 111 is an open type compressor, and the compressor body 111b and the gas engine 111a are directly connected or connected via a belt.

  The air that has been air-conditioned and cooled or warmed by the GHP 10 is sent to the air-conditioned space S via the air outlet 124 formed in the indoor unit 12. As a result, the GHP 10 cools or heats the air-conditioned space S. In addition, the hollow arrow shown in FIG. 2 has shown the airflow blown off through the blower outlets 124 and 424 (it mentions later).

  The control unit (not shown) of the GHP 10 is an aggregate of a control unit (not shown) of the outdoor unit 11 and a control unit (not shown) of the indoor unit 12. That is, the control unit of the outdoor unit 11 and the control unit of the indoor unit 12 are connected via a dedicated communication line and can exchange control signals with each other.

  Further, since the control unit of the GHP 10 and the control unit 75 (described later) of the controller 70 are connected via the dedicated communication line 5, the control unit of the GHP 10 is based on a control command from the controller 70. Operations of various devices arranged in the outdoor unit 11 and the indoor unit 12 are controlled. Here, the control command includes an operation / stop command for the indoor unit 12, a command for changing the operation mode of the indoor unit 12, and the like. The control of the operation of various devices refers to adjustment of the rotation speed of the compressor 111, the outdoor fan 114, and the indoor fan 123, adjustment of the opening degree of the expansion valve 122, and the like. In addition, the control unit of the GHP 10 transmits data related to the operation performance of the GHP 10 (hereinafter referred to as operation data) to the controller 70 in response to a control command from the controller 70.

  The operation data of the GHP 10 includes the operation parameters of the outdoor unit 11 (normal mode, etc.), the operation parameters of the indoor unit 12 (start / stop state, set temperature, cooling / heating / dehumidification operation mode, etc.), outdoor temperature, The room temperature, state values of various devices in the outdoor unit 11 and the indoor unit 12 (such as the rotation speeds of the fans 114 and 123 and the compressor 111), detection values of the various sensors 15 to 18 and the like are included.

  The various sensors 15 to 18 are installed in the vicinity of the suction port of the indoor unit 12 and detect the temperature of the air-conditioned space S (hereinafter referred to as the indoor temperature) and the vicinity of the suction port of the outdoor unit 11. An outdoor temperature sensor 16 that detects an outdoor temperature near the outdoor unit 11, a refrigerant temperature sensor 17 that is installed at a predetermined position of the refrigerant circuit 14 and detects a refrigerant temperature, and a predetermined position of the refrigerant circuit 14. The refrigerant pressure sensor 18 is installed and detects the refrigerant pressure.

(2-2) Configuration of EHP 40 The configuration of the EHP 40 will be described below with reference to FIG.

  The EHP 40 mainly includes an outdoor unit 41, an indoor unit 42, and a refrigerant pipe 43 that connects the outdoor unit 41 and the indoor unit 42. The outdoor unit 41 and the indoor unit 42 have an outdoor refrigerant circuit 440a and an indoor refrigerant circuit 440b, respectively, and are connected by a refrigerant pipe 43 to form one refrigerant circuit 44. . In the outdoor unit 41, devices constituting the outdoor refrigerant circuit 440 a such as the compressor 411, the outdoor heat exchanger 412, and the four-way switching valve 413 and the outdoor fan 414 are accommodated. The apparatus which comprises the indoor side refrigerant circuit 440b, such as the indoor heat exchanger 421 and the expansion valve 422, and the indoor fan 423 are accommodated. Here, the compressor 411 uses the electric motor 411a as a power source. The electric motor 411a is driven by power supplied from the outside, and the compressor 411 is thereby operated.

  The air that has been air-conditioned and cooled or warmed by the EHP 40 is sent to the air-conditioned space S through the air outlet 424 formed in the indoor unit 42. As a result, the EHP 40 cools or heats the air-conditioned space S.

  The control unit (not shown) of the EHP 40, which is an assembly of the control unit (not shown) of the outdoor unit 41 and the control unit (not shown) of the indoor unit 42, has substantially the same configuration as the control unit of the GHP 10. The operation is almost the same. Therefore, the description is omitted. In FIG. 2, various sensors related to the EHP 40 are not shown, but are provided in the same manner as the GHP 10 and receive detection signals from the various sensors.

(2-3) Configuration of Controller 70 FIG. 3 is a schematic configuration diagram of the controller 70. Hereinafter, the configuration of the controller 70 will be described with reference to FIG.

  As shown in FIG. 3, the controller 70 mainly includes a communication unit 71, a storage unit 72, an input unit 73, an output unit 74, and a control unit 75.

  The communication unit 71 is a network interface that enables the controller 70 to be connected to a network (dedicated communication line 5).

  The storage unit 72 includes a hard disk or the like, and mainly holds a gas consumption database 72a, a power consumption database 72b, a contract value database 72c, a control command database 72d, and an operation database 72e. .

(2-3-1) Gas consumption database 72a
In the gas consumption database 72a, data of the unit gas consumption, which is the gas consumption of the GHP 10 in units of demand calculation time (in this embodiment, 30 seconds), is accumulated, or the accumulated amount of unit gas consumption (elapsed) Cumulative gas consumption data, including cumulative gas consumption over time (hereinafter referred to as GHP cumulative consumption), and the total gas consumption data for the gas equipment. Data of the total gas consumption, which is the cumulative gas consumption for each gas demand period at the end, is accumulated.

(2-3-2) Power consumption database 72b
In the power consumption database 72b, unit power consumption data that is the power consumption of the EHP 40 in units of demand calculation time (in this embodiment, 30 seconds) is accumulated, or the accumulated amount of unit power consumption (elapsed) Cumulative power consumption data, which is the cumulative power consumption of the entire electrical equipment, including the cumulative amount of power consumption over time (hereinafter referred to as EHP cumulative consumption). Data on the total power consumption, which is the cumulative power consumption for each power demand period at the end, is accumulated.

(2-3-3) Contract value database 72c
The contract value database 72c stores a contract gas amount and a contract power amount.

(2-3-4) Control command database 72d
The control command database 72d stores data of control commands (operation / stop command, operation mode change command, etc.) for the GHP 10 and the EHP 40.

(2-3-5) Driving database 72e
The operation database 72e stores operation data of the GHP 10 and the EHP 40.

  The input unit 73 and the output unit 74 are integrally configured as a touch panel display. When the administrator or the like touches a button or the like having a function of receiving an input from the administrator or the like displayed on the display, the control process corresponding to the button is executed by the control unit 75.

  The input unit 73 and the output unit 74 are not integrally configured as described above, and may be separate bodies. For example, the input unit 73 may be configured with a mouse or a keyboard, and the output unit 74 may be configured with a display or a speaker.

  The control unit 75 includes a CPU, a ROM, a RAM, and the like, and reads out and executes a program stored in the storage unit 72 to thereby execute a data collection unit 75a, a gas consumption management unit 75b, and a power consumption management. 75c, predicted consumption calculation unit 75d, GHP driving capability suppression control unit 75e, EHP driving capability suppression control unit 75f, balance determination unit 75g, control command generation unit 75h, command transmission unit 75i, air conditioning load calculation unit 75j, etc. To do.

(2-3-6) Data collection unit 75a
The data collection unit 75a collects GHP10 and EHP40 operation data (detection values of various sensors) and the like at predetermined time intervals (in this embodiment, every minute). These data are stored in the operation database 72e by the data collection unit 75a.

(2-3-7) Gas consumption management unit 75b
The gas consumption management unit 75b manages the gas consumption of the gas type equipment including the GHP10. Specifically, unit gas consumption, GHP cumulative consumption, cumulative gas consumption, total gas consumption, and the like are calculated from operation data of the GHP 10 and the like. These calculated data are stored in the gas consumption database 72a by the gas consumption management unit 75b.

  When the gas demand time period ends, the gas consumption amount management unit 75b resets the calculated cumulative gas consumption amount, and uses the end time of the gas demand time period as a new starting point. Start the calculation.

(2-3-8) Power consumption management unit 75c
The power consumption management unit 75c manages the power consumption of the electrical equipment including the EHP 40. Specifically, unit power consumption, EHP cumulative consumption, cumulative power consumption, total power consumption, and the like are calculated from the operation data of the EHP 40 and the like. These calculated data are stored in the power consumption database 72b by the power consumption management unit 75c.

  When the power demand time period ends, the power consumption management unit 75c resets the calculated cumulative power consumption and newly sets the accumulated power consumption as the new start point. Start the calculation.

(2-3-9) Consumption prediction amount calculation unit 75d
The predicted consumption amount calculation unit 75d calculates a predicted total gas consumption amount that is a predicted amount of gas consumption amount in the gas demand period at the end of the gas demand period in the entire building B. Further, the predicted consumption amount calculation unit 75d calculates a predicted total power consumption amount that is a predicted amount of the power consumption amount for the power demand period at the end of the power demand period for the entire building B.

(2-3-10) GHP driving capability suppression control unit 75e (corresponding to the first driving capability suppression control unit)
The GHP driving capability suppression control unit 75e performs GHP driving capability suppression control that suppresses the driving capability of the GHP 10.

(2-3-11) EHP driving capability suppression control unit 75f (corresponding to the second driving capability suppression control unit)
The EHP driving capability suppression control unit 75f performs EHP driving capability suppression control that suppresses the driving capability of the EHP 40.

(2-3-12) Balance determining unit 75g
The balance determination unit 75g determines the operation balance of the GHP 10 and the EHP 40 so that the energy cost of the entire air conditioning control system 100 is suppressed.

  Here, the operation balance is such that the ratio between the air conditioning by the GHP 10 and the air conditioning by the EHP 40 is determined, such as the ratio of the operating capacity to the air conditioning load of the air-conditioned space S. In determining the operation balance, the mechanical characteristics of the GHP 10 and the EHP 40 are taken into consideration.

(2-3-13) Control command generator 75h
The control command generation unit 75h generates control commands for the GHP 10 and the EHP 40. The control command generated by the control command generation unit 75h is stored as data in the control command database 72d.

(2-3-14) Command transmitter 75i
The command transmission unit 75i transmits control command data for the GHP 10 and the EHP 40 stored in the control command database 72d to the control unit of the GHP 10 and the control unit of the EHP 40, respectively. Thereby, the controller 70 performs air conditioning control of the GHP 10 and the EHP 40.

(2-3-15) Air conditioning load calculation unit 75j
The air conditioning load calculator 75j calculates the air conditioning load of the air-conditioned space S.

  The operation of each unit constituting the control unit 75 has been briefly described above, but specific operations thereof will be described in the following (3) Control of the controller 70.

(3) Control of Controller 70 Hereinafter, control of the controller 70 in the air conditioning control system 100 will be described.

  FIG. 4 is a flowchart showing processing of the controller 70 according to the first embodiment.

  As shown in FIG. 4, in step S1, the balance determination unit 75g determines the operation balance of the GHP 10 and the EHP 40. Specifically, the air conditioning load calculation unit 75j calculates the air conditioning load of the air-conditioned space S from the difference between the target set temperature and the room temperature. And the balance determination part 75g determines the driving | running balance of GHP10 and EHP40 from the air-conditioning load of the to-be-conditioned space S.

  In step S2, the gas consumption management unit 75b calculates the cumulative gas consumption during the elapsed time. In addition, the power consumption management unit 75c calculates the accumulated power consumption for the elapsed time.

  Specifically, the gas consumption management unit 75b and the power consumption management unit 75c are respectively the operation state values of the outdoor unit 11 of the GHP 10 and the outdoor unit 41 of the EHP 40 (specifically, the compressor 111 and the compressor 411). , And the input current to the compressor 111 and the compressor 411), the GHP cumulative consumption and the EHP cumulative consumption, and the cumulative gas consumption and cumulative power consumption consumed by the entire building B are calculated. ing. The operation state values of the outdoor unit 11 of the GHP 10 and the outdoor unit 41 of the EHP 40 are stored in the operation database 72e as the data collection unit 75a collects the operation data of the GHP 10 and the EHP 40 at predetermined time intervals.

  In step S3, the predicted consumption amount calculation unit 75d calculates a predicted total gas consumption amount and a predicted total power consumption amount.

  Specifically, the predicted consumption amount calculation unit 75d calculates the total gas consumption from the accumulated gas consumption, the accumulated power consumption, the remaining time until the end of the gas demand time period, and the remaining time until the end of the power demand time period. A predicted consumption amount and a predicted total power consumption amount are calculated. More specifically, for example, when a function equation can be derived from the relationship between the accumulated gas consumption amount, the accumulated power consumption amount, and the elapsed time, the total gas consumption prediction amount and the total power consumption prediction amount are based on the function equations. Calculate the amount.

  In step S4, the EHP driving capability suppression control unit 75f determines whether or not the total power consumption prediction amount exceeds the contract power amount. When it determines with exceeding, it transfers to step S5, and on the other hand, when determining with not exceeding, it transfers to step S6.

  In step S5, the EHP driving capability suppression control unit 75f performs the EHP driving capability suppression control, and the balance determination unit 75g determines the driving capability of the GHP 10 based on the driving capability of the EHP 40.

  Specifically, the EHP driving capability suppression control unit 75f first determines the total power consumption prediction amount based on the contract power amount, the accumulated power consumption amount of the EHP 40, and the remaining time until the power demand time limit. The ratio (slope) of the accumulated power consumption in the remaining time until the power demand time limit is calculated so as not to exceed the power amount. Then, based on the ratio of the accumulated power consumption, the driving ability of the EHP 40 is determined. And the balance determination part 75g has determined the driving capacity of GHP10 based on the air-conditioning load of the to-be-aired space S and the driving capacity of EHP40 at that time. For example, when 80% of the air conditioning load of the air-conditioned space S can be air-conditioned by the EHP 40, the operating capacity of the GHP 10 is determined so that 20% of the air conditioning load of the air-conditioned space S can be air-conditioned by the GHP 10.

  Here, suppression of the operating capacity of the EHP 40 in the EHP operating capacity suppression control includes suppression of the rotational speed of the compressor 411. Further, the operating capacity of the EHP 40 can be indirectly suppressed by raising the target set temperature during the cooling operation and lowering it during the heating operation.

  In step S6, the GHP driving capability suppression control unit 75e determines whether or not the total gas consumption predicted amount exceeds the contract gas amount. When it determines with exceeding, it transfers to step S7, and on the other hand, when determining with not exceeding, it returns to step S1 and repeats a process.

  In step S7, the GHP driving capability suppression control unit 75e performs GHP driving capability suppression control, and the balance determination unit 75g determines the driving capability of the EHP 40 based on the driving capability of the GHP 10.

  Specifically, the GHP operation capacity suppression control unit 75e first contracts the total gas consumption predicted amount based on the contract gas amount, the accumulated gas consumption amount of the GHP 10, and the remaining time until the gas demand time limit. The ratio (slope) of the cumulative gas consumption during the remaining time until the gas demand time limit is calculated so as not to exceed the gas amount. Based on this cumulative gas consumption rate, the driving capacity of the GHP 10 is determined. And the balance determination part 75g determines the driving capacity of EHP40 based on the air-conditioning load of the to-be-aired space S at that time and the driving capacity of GHP10.

  Here, suppression of the driving capability of the GHP 10 in the GHP driving capability suppression control includes suppression of the rotational speed of the compressor 111. Moreover, the driving capability of GHP10 can be indirectly suppressed by raising the target set temperature during cooling operation and lowering it during heating operation.

  Here, based on the operation balance of GHP10 and EHP40, control command generator 75h generates a control command for GHP10 and EHP40, and the data of this control command is controlled by control transmitter 75i and control of EHP40 by command transmitter 75i. Sent to the department. As a result, the controller 70 controls the GHP 10 and the EHP 40.

  Here, the graph which showed an example of the air conditioning control of GHP10 and EHP40 by the controller 70 as mentioned above is shown in FIG.

  Hereinafter, FIG. 5 will be briefly described. The upper graph shown in FIG. 5 represents the accumulated power consumption for each power demand period of the electric equipment including the EHP 40, and the lower graph shows the gas demand of the gas equipment including the GHP 10. It represents the cumulative gas consumption for each time period. In addition, 0, 30, 60, 90, and 120 (min: minutes) indicate the elapsed time since the start of air conditioning control.

  First, at the time when air conditioning control as shown in the graph of FIG. 5 is started (at time 0 (min)), the operation balance of GHP 10 and EHP 40 is determined so that air conditioning by EHP 40 is mainly performed. Air conditioning is performed by.

  Then, at the time of A (min), the EHP driving capability suppression control unit 75f determines that the total power consumption prediction amount exceeds the contracted power amount, and suppresses the EHP driving capability suppression so that the power consumption amount of the EHP 40 is suppressed. Control has started. At this time, as described above, the balance determination unit 75g determines the operation balance between the GHP 10 and the EHP 40. And the control command based on this driving | running balance is transmitted to GHP10 and EHP40.

  Therefore, during the period from A (min) to 30 (min), the slope of the cumulative power consumption of the electrical equipment including the EHP 40 is reduced from 0 (min) to A (min) by suppressing the operation capacity of the EHP 40. The slope of the cumulative gas consumption of the gas-type equipment including GHP10 is compared with the slope between 0 (min) and A (min) due to the increase in the operating capacity of GHP10. Sometimes it comes.

  Then, the accumulated power consumption is reset at 30 (min). At the time of 30 (min), since the predicted total gas consumption amount of the GHP 10 is not predicted to exceed the contract gas amount, the GHP 10 and the EHP 40 maintain the current operation state. Here, the air conditioning load calculation unit 75j may again calculate the air conditioning load of the air-conditioned space S, and the balance determination unit 75g may determine the operation balance of the GHP 10 and the EHP 40 based on the air conditioning load or the like.

  At the time of B (min), the GHP operation capability suppression control unit 75e determines that the total gas consumption predicted amount exceeds the contract gas amount, and starts GHP operation capability suppression control so that the operation capability of GHP10 is suppressed. To do. At this time, the driving capacity of the EHP 40 that matches the driving capacity of the GHP 10 is determined by the balance determining unit 75g. And based on the driving | running balance determined by the balance determination part 75g, the air conditioning by GHP10 and EHP40 from the time of B (min) is performed. Then, at the time of 60 (min), the accumulated power consumption and the accumulated gas consumption are reset.

  The air conditioning control by the controller 70 is also performed after the time of 60 (min) in the same manner as described above. Therefore, the description is omitted.

  In addition, the following are mentioned as an application example of the above air conditioning control systems 100. FIG.

  For example, the air conditioning load in the first air-conditioned space S in winter is considered to be high, and it is desirable to perform rapid heating. In such a case, it is preferable to mainly operate the GHP 10 that is good at rapid heating and low outside air heating, rather than equalizing the ratio of the air conditioning by the GHP 10 and the air conditioning by the EHP 40. Therefore, in such a case, when the air conditioning control is started, the operation of the GHP 10 and the EHP 40 is performed so that the ratio of the air conditioning by the GHP 10 to the air conditioning load of the air-conditioned space S is higher than the ratio of the air conditioning by the EHP 40. And rapid heating. Thereby, a user's comfort improves.

  Even if such an operation is performed, if it is determined that the total gas consumption exceeds the contract gas amount, the GHP operation capability suppression control is started, so that the energy cost can be suppressed.

  In addition, since the power demand time limit is 30 minutes and the accumulated power consumption is reset in 30 minutes, even when the GHP driving capability suppression control is performed, the driving capability of the GHP 10 is suppressed by the EHP 40. Air conditioning can be compensated for. That is, it is possible to perform control taking advantage of the difference between the gas demand time period and the power demand time period. Thereby, the fall of a user's comfort can also be prevented.

  Examples of the control that takes advantage of the gas demand time limit and the power demand time limit include the following.

  For example, when the air conditioning load of the air-conditioned space S is calculated in consideration of the number of people in the air-conditioned space S, it is considered that the air conditioning load in the air-conditioned space S increases after a lunch break. Therefore, it is possible to perform control such that the GHP 10 included in the gas-type equipment whose cumulative gas consumption is reset in one hour is set to a high driving capacity for 30 minutes after the lunch break. it can.

  For example, when 12: 00 to 12: 15 is a break time zone, it is considered that the air conditioning load of the air-conditioned space S is not so high during that time zone. Therefore, when it is considered that the EHP 40 included in the electrical equipment whose cumulative power consumption is reset in 30 minutes is mainly operated and the break time period has passed and the air conditioning load of the air-conditioned space S is increased, the GHP 10 It is also possible to perform control such as driving mainly.

(4) Features Conventionally, there has been proposed an air conditioning control system in which GHP and EHP are arranged in an air-conditioned space and both perform air conditioning in cooperation. Some air conditioning control systems control the accumulated power consumption so as not to exceed the contracted power amount in the demand time period (power demand time period) in consideration of the EHP power consumption.

  However, when the air-conditioned space is air-conditioned not only by the EHP but also by the GHP, it is conceivable that the operation time of the GHP increases by suppressing the power consumption of the EHP. In this case, even if the energy cost of EHP can be suppressed, there is a concern that the total energy cost including the energy cost of GHP will increase.

  Therefore, in the present embodiment, the control unit 75 (specifically, the GHP driving capability suppression control unit 75e and the EHP driving capability suppression control unit 75f) performs the GHP driving capability suppression control and the EHP driving capability suppression control. , So that the cumulative gas consumption (gas consumption) does not exceed the contract gas amount in the gas demand time period, and the cumulative power consumption (gas consumption) does not exceed the contract power amount in the power demand time period I have control.

  Thereby, the total energy cost of the air-conditioning control system 100 can be suppressed.

  Moreover, the control part 75 not only performs GHP driving capability suppression control and EHP driving capability suppression control, but also determines the driving balance of GHP 10 and EHP 40. Further, the control unit 75 controls the GHP 10 and the EHP 40 by taking advantage of the fact that the gas demand time period and the power demand time period are different (partially overlap).

  That is, even if the GHP driving capability suppression control unit 75e or the EHP driving capability suppression control unit 75f performs the GHP driving capability suppression control or the EHP driving capability suppression control, the balance determination unit 75g performs the GHP driving capability suppression control or the EHP driving capability suppression control. In conjunction with the control, by determining the operating capacity of the EHP 40 or GHP 10 from the air conditioning load of the air-conditioned space S, the control of the air conditioning due to the suppression of the operating capacity of the GHP 10 or EHP 40 is operated by the EHP 40 or GHP 10. It supplements with. Therefore, it is possible to prevent a decrease in user comfort.

(5) Modification (5-1) Modification 1A
In the above embodiment, the GHP 10 gas consumption (or GHP cumulative consumption) and the EHP 40 power consumption (or EHP cumulative consumption) are calculated from the operating state values of the GHP 10 and EHP 40. It is not limited.

  For example, by using a gas consumption measuring instrument or a power consumption measuring instrument for measuring gas consumption and power consumption, the cumulative gas consumption of gas-type equipment including GHP10 and electric equipment including EHP40 The accumulated power consumption may be calculated.

  Further, for example, in addition to the operation state values of GHP10 and EHP40, model data of GHP10 and EHP40 (for example, the capacity of compressors 111 and 411 can be known) is stored in storage unit 72, so that GHP10 gas The consumption amount and the power consumption amount of the EHP 40 may be calculated.

(5-2) Modification 1B
In the above embodiment, the air conditioning load in the air-conditioned space S has been described as being calculated from the difference between the set temperature and the room temperature. However, the present invention is not limited to this.

  For example, if it is a factor that seems to affect the air conditioning load of the air-conditioned space S, the air-conditioning load of the air-conditioned space S may be calculated including the factor. Factors include the time zone, the size and layout of the air-conditioned space S, the arrangement of furniture in the air-conditioned space S, the number of people in the air-conditioned space S, the outside environment such as the outside air temperature and the typhoon.

Second Embodiment
Next, the second embodiment will be described. In addition, about the component apparatus etc. similar to 1st Embodiment, a same sign is attached | subjected and description is abbreviate | omitted.

  Here, in the control of the controller 70 as in the first embodiment, processing is performed by operating only one of the GHP 10 and the EHP 40 until the air-conditioning load of the air-conditioned space S becomes a predetermined load. A description will be given by taking as an example a case where control is performed such that the other of the GHP 10 and the EHP 40 is operated when the air conditioning load of S exceeds a predetermined load. Here, the predetermined load is the air conditioning load of the air-conditioned space S corresponding to the contract amount (contract gas amount or contract power amount) of the equipment including the one of the GHP 10 and the EHP 40 that is operated. is there.

  And the controller 70 which concerns on 2nd Embodiment is controlled so that there may be no state which one of GHP10 and EHP40 has stopped or the state which is drive | operating on such a premise. is there. That is, in the second embodiment, control is always performed so that both the GHP 10 and the EHP 40 are in operation.

  In the first embodiment, for example, the balance determination unit 75g supplements 100% of the air conditioning load of the air-conditioned space S with air conditioning by the GHP 10 (air conditioning by the EHP 40). This is done by determining an operation balance such as In addition, the graph which shows the driving | running state of GHP10 and EHP40 according to the air-conditioning load of the to-be-aired space S in an example of control in 1st Embodiment in such a case is shown in FIG. Therefore, in FIG. 6, the predetermined load as described above is L <b> 1 that is an air conditioning load corresponding to the contract gas amount of the gas facility equipment including the GHP 10. L2 in FIG. 6 is obtained by adding the air conditioning load corresponding to the contract power amount to the air conditioning load corresponding to the contract gas amount. That is, the air conditioning load obtained by subtracting L1 from L2 is the air conditioning load corresponding to the contracted power amount. Moreover, in FIG. 6, the fluctuation | variation (air-conditioning load fluctuation | variation) of the air-conditioning load of the to-be-conditioned space S is represented by the wavy line.

  Hereinafter, the configuration and control of the controller 70 in the second embodiment will be described.

  FIG. 7 is a graph showing operating states of the GHP 10 and the EHP 40 according to the air conditioning load of the air-conditioned space S in the second embodiment. In addition, what is shown with L1, L2, and a wavy line in FIG. 7 means the same thing as FIG.

(1) Configuration FIG. 8 is a schematic configuration diagram of a controller 70 according to the second embodiment.

  In the second embodiment, the storage unit 72 of the controller 70 further holds an operation priority rule database 72f and a sub air conditioner operation rule database 72g.

  The driving priority rule database 72f stores driving priority rule data indicating which of the GHP 10 and the EHP 40 is operated as a main. Here, the main air conditioner is operated as the main air conditioner. The main air conditioner is an air conditioner that operates independently when the air conditioning load of the air-conditioned space S is equal to or less than the air conditioning load corresponding to the contract gas amount or the contract power amount. That is, the main air conditioner is subjected to operation capability suppression control (GHP operation capability suppression control or EHP operation capability suppression control) so as not to exceed a predetermined contract amount (contract gas amount or contract power amount). For example, in the case shown in FIGS. 6 and 7, the GHP 10 is the main air conditioner. Therefore, an operation priority rule is a rule in which a main air conditioner is determined among GHP10 and EHP40.

  Specifically, the operation priority rule is a rule based on the mechanical characteristics of the GHP 10 and the EHP 40, the season, the set temperature, the air conditioning load of the air-conditioned space S, the temperature distribution, and the like. For example, in the winter season, the operation priority rule is good. The rule is that the GHP 10 is a main air conditioner.

  Hereinafter, the GHP 10 or EHP 40 that is not operated in the main is referred to as a sub air conditioner.

  The sub air conditioner is an air conditioner that operates when the air conditioning load of the air-conditioned space S exceeds the air conditioning load corresponding to the contract gas amount or the contract power amount.

  The sub air conditioner operation rule database 72g stores data of sub air conditioner operation rules that are rules indicating how to operate the sub air conditioner.

  The sub air conditioner operation rule is a rule for operating the sub air conditioner at a constant ratio with respect to the air conditioning load of the air-conditioned space S (for example, 20% of the air conditioning load of the air-conditioned space S is air-conditioned by the sub air conditioner. etc). Here, it is desirable that the sub air conditioner is operated so as to correspond to (approach) the operation capacity at the time of the weak operation of the sub air conditioner.

  The controller 75 of the controller 70 further functions as a main air conditioner determination unit 75k, a main air conditioner control unit 75l, a sub air conditioner control unit 75m, and an air conditioning load determination unit 75n. These operations will be described in (2) Control.

(2) Control As shown in FIG. 7, in the second embodiment of the air conditioning control system 100, not only the GHP 10 but also the EHP 40 is operated even when the air conditioning load of the air-conditioned space S is equal to or less than the load L 1. ing. That is, even when the air-conditioning load in the air-conditioned space S is low and one of the GHP 10 and the EHP 40 can be stopped (as shown by C in the dot portion of FIG. 7), the GHP 10 and the EHP 40 (main air conditioning) And sub air conditioners).

  Below, the specific process of the controller 70 which performs such control is demonstrated.

  FIG. 9 is a flowchart showing processing of the controller 70 according to the second embodiment.

  As shown in FIG. 9, first, in step S21, the main air conditioner determination unit 75k determines the main air conditioner based on the data of the operation priority rule stored in the operation priority rule database 72f. Specifically, first, the main air conditioner determination unit 75k reads the operation priority rule, and determines the main air conditioner from the set temperatures of the GHP 10 and the EHP 40 and the temperature distribution of the air-conditioned space S. Since the sub air conditioner is automatically determined when the main air conditioner is determined, the main air conditioner determining unit 75k has a function of determining the sub air conditioner.

  In step S22, the main air conditioner control unit 75l operates the main air conditioner. Specifically, the main air conditioner is operated by transmitting a control command to the main air conditioner generated by the main air conditioner control unit 75l by the command transmitting unit 75i. At this time, the sub air conditioner control unit 75m simultaneously operates the sub air conditioner. Specifically, the sub air conditioner is operated by transmitting a control command to the sub air conditioner generated by the sub air conditioner control unit 75m by the command transmission unit 75i.

  The control command to the main air conditioner is generated based on the air conditioning load of the air-conditioned space S. The control command to the sub air conditioner is generated based on the sub air conditioner operation rule (rule that operates at a constant ratio with respect to the air conditioning load of the air-conditioned space S).

  Therefore, in step S22, the operation capacity of the main air conditioner and the sub air conditioner is changed according to the air conditioning load of the air conditioned space S (for example, 80% of the air conditioning load of the air conditioned space S is the main air conditioner). The main air conditioner control unit 75l and the sub air conditioner control unit 75m are connected to the main air conditioner and the sub air conditioner, respectively. A control command is generated.

  In step S23, the air-conditioning load determination unit 75n determines that the air-conditioning load in the air-conditioned space S is a predetermined load (for example, L1 that is an air-conditioning load corresponding to the contracted gas amount of the GHP 10 that is the main air-conditioner in FIG. 7). It is determined whether or not it exceeds. When it determines with exceeding, it transfers to step S24, and on the other hand, when it determines with not exceeding, step S23 is repeated.

  In step S24, the air conditioning load calculation unit 75j calculates the air conditioning load of the air-conditioned space S that exceeds a predetermined load.

  In step S25, the sub air conditioner control unit 75m operates the sub air conditioner in accordance with the air conditioning load of the air-conditioned space S exceeding the predetermined load calculated in step S24. That is, here, the air conditioning load of the air-conditioned space S exceeding a predetermined load is air-conditioned by the sub air conditioner so that the consumption of the equipment including the main air conditioner does not exceed the contracted amount. I make up for it. When the process of step S25 is completed, the process returns to step S22.

  In addition, regarding the sub air conditioner, when it is determined that the total gas consumption prediction amount or the total power consumption prediction amount exceeds the contract gas amount or the contract power amount, the operation capacity suppression control (GHP operation capacity suppression control or EHP operation) is determined. (Capacity suppression control) is performed. Therefore, the energy cost in the entire air conditioning control system 100 can be suppressed.

(3) Features In the second embodiment, as in the first embodiment, the GHP 10 and the EHP 40 are subjected to the driving capability suppression control (GHP driving capability suppression control, EHP driving capability suppression control). Can reduce the total energy cost. In the second embodiment, both the GHP 10 and the EHP 40 are always operated. Therefore, even when only one of the GHP 10 and the EHP 40 needs to be operated, the temperature unevenness in the air-conditioned space S can be suppressed by always operating the GHP 10 and the EHP 40.

  Therefore, not only the energy cost is suppressed, but also the temperature unevenness of the air-conditioned space S is prevented, and the user's comfort is improved.

  Even if the sub air conditioner is operated when the air conditioning load of the air-conditioned space S is low, the operating capacity of the sub air conditioner is suppressed below the predetermined operating capacity. The energy cost as a whole can be suppressed.

(4) Modification The sub air conditioner operation rules are not limited to those described above.

  For example, the sub air conditioner operation rule may be a rule for operating the sub air conditioner at a certain ratio of the operation capacity of the sub air conditioner (for example, 1 kw is always output in consideration of COP). This contributes to energy saving and cost saving.

<Third Embodiment>
FIG. 10 is a schematic configuration diagram of a controller 70 according to the third embodiment. FIG. 11 is a graph showing operating states of the GHP 10 and the EHP 40 according to the air conditioning load of the air-conditioned space S in the third embodiment. In addition, what is shown with L1, L2, and a wavy line in FIG. 11 means the same thing as FIG.

  Hereinafter, the third embodiment will be described. In addition, about the component apparatus etc. similar to 1st Embodiment and 2nd Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  Briefly describing the differences of the third embodiment from the first embodiment and the second embodiment, in the first embodiment and the second embodiment, the cumulative gas consumption of the gas-type equipment including the GHP 10 is the contract gas amount. Is controlled by the control unit 75 of the controller 70 so that the cumulative power consumption of the electrical equipment including the EHP 40 does not exceed the contracted power amount. In the third embodiment, the GHP 10 is controlled. When the predicted gas consumption of the gas equipment including the gas exceeds the contracted gas and the predicted power consumption of the electric equipment including the EHP 40 exceeds the contracted power (shown in the diagonally shaded portion in FIG. 11) The control is performed assuming that there is a case of D). That is, the third embodiment assumes that the gas consumption and the power consumption may exceed the contract gas amount and the contract power amount depending on the usage method of the GHP 10 and the EHP 40 and the air conditioning load of the air-conditioned space S. Is.

  In the third embodiment, unlike the second embodiment, it is not always assumed that both GHP 10 and EHP 40 are operated, and one air conditioner (main air conditioner) is used until a predetermined load is exceeded. The air-conditioner is controlled in such a manner that the other air conditioner (sub air conditioner) is operated when a predetermined load is exceeded.

  Hereinafter, the configuration and control of the controller 70 different from the first embodiment and the second embodiment of the third embodiment will be described.

(1) Configuration As shown in FIG. 10, the storage unit 72 of the controller 70 further holds a fee database 72h. The charge database 72h stores data on gas charges and power charges. The gas charge and power charge include the gas excess cost (the first excess cost) that is the energy cost of the gas-type equipment including GHP10 when the gas consumption and power consumption exceed the contract gas and contract power, respectively. Equivalent) and an electricity excess cost (corresponding to the second excess cost), which is the energy cost of the electrical equipment including the EHP 40, is stored. The gas excess cost and the electricity excess cost are charges as penalties exceeding the contract amount, and are calculated based on the COP of the GHP 10 and the EHP 40, the basic charge of the gas charge and the power charge, the excess time, and the like.

  The control unit 75 of the controller 70 further functions as an excess cost calculation unit 75o. The operation of the excess cost calculation unit 75o will be described later.

(2) Control FIG. 12 is a flowchart showing processing of the controller 70 according to the third embodiment.

  Hereinafter, control of the controller 70 according to the third embodiment will be described with reference to FIG.

  First, as in the second embodiment, the main air conditioner is determined (step S31), and it is determined whether or not the air conditioning load of the air-conditioned space S exceeds the first load (L1 in FIG. 11) (step 1). S32). If it is determined that the air-conditioning space is exceeded, the air-conditioning load of the air-conditioned space S exceeding the first load is calculated (step S33). If it is determined that the air-conditioning space is not exceeded, only the main air conditioner is operated (step S34).

  In step S35, the main air conditioner and the sub air conditioner are operated. Specifically, the main air conditioner processes the air-conditioning load of the air-conditioned space S corresponding to the first load, and the sub air-conditioner operates to process the air-conditioning load of the air-conditioned space S exceeding the first load. I do.

  In step S36, the air conditioning load determination unit 75n determines whether or not the air conditioning load of the air-conditioned space S exceeds the second load (L2 in FIG. 11). That is, it is determined here whether the total gas consumption prediction amount exceeds the contract gas amount and the total power consumption prediction amount exceeds the contract power amount. When it determines with exceeding, it transfers to step S37, and on the other hand, when determining with not exceeding, it transfers to step S35.

  In step S37, the excess cost calculation unit 75o reads the basic charge data of the gas charge and the power charge stored in the charge database 72h, and calculates the gas excess cost and the electricity excess cost.

  In step S38, the control command generation unit 75h generates a control command for operating the cheaper gas excess cost and electricity excess cost. Then, the command transmission unit 75 i transmits the control command to the GHP and 10EHP 40.

  As a specific process, first, the gas excess cost and the electricity excess cost calculated in step S37 are read and compared. And the control command which cancels | releases the driving capability suppression control of GHP10 or EHP40 with the cheaper cost among them is generated. As a result, the GHP 10 or the EHP 40 for which the driving ability suppression control has been released can be operated beyond the contract gas amount in the gas demand time period and the contract power amount in the power demand time period. At this time, the GHP 10 or EHP 40 for which the driving ability suppression control has been released is subjected to a predetermined operation by generating a control command by the control command generating unit 75h based on the air conditioning load, room temperature, room temperature distribution, etc. of the air-conditioned space S. Driving will be performed under conditions.

(3) Features The control of the controller 70 of the third embodiment is such that, for example, when the air-conditioning load in the air-conditioned space S is high, the consumption of gas-type equipment including GHP 10 and electrical equipment including EHP 40 is This control is effective when the contract amount must be exceeded. That is, even in the above-described case, the GHP 10 or EHP 40 having the lower gas excess cost and electricity excess cost is operated by the air conditioning load corresponding to the excess of the contract amount, and as a result, the air conditioning control system. The energy cost of the entire 100 can be suppressed.

(4) Modification (4-1) Modification 3A
In the above embodiment, the control command generation unit 75h generates a control command that cancels the driving ability suppression control, so that the consumption amount of the gas-type equipment device including the GHP 10 or the electric equipment device including the EHP 40 is the contract amount. For example, although the contract gas amount and the contract power amount are determined by the gas demand contract and the power demand contract, the controller 70 does not seem to perform the above-described operation capability suppression control. Even in such a case, the above-described control can be applied.

(4-2) Modification 3B
In the embodiment described above, the processing configuration is such that the excess cost is calculated in step S37 when it is determined in step S36 that the air conditioning load exceeds the second load, but this is not a limitation.

  For example, a processing configuration in which a determination unit (not shown) determines whether or not to allow an excess cost may be included between step S36 and step S37. At this time, when it is determined that the excess cost is permitted, the process proceeds to step S37. On the other hand, when it is determined that the excess cost is not permitted, the driving ability suppression control of the GHP 10 and the EHP 40 is performed. That is, in this case, the GHP driving capability suppression control and the EHP driving capability suppression control are performed simultaneously.

(4-3) Modification 3C
In the above-described embodiment, it has been described that the cheaper gas excess cost and electricity excess cost are operated by the air conditioning load corresponding to the excess of the contract amount, but the present invention is not limited to this.

  For example, when the gas excess cost and the electricity excess cost are the same cost, the GHP 10 and EHP 40 process the air conditioning load corresponding to the excess of the contract amount by canceling the operation capacity suppression control of the GHP 10 and the EHP 40. May be.

Further, when the gas excess cost and the electricity excess cost are the same cost, the GHP 10 or EHP 40 having a low value may be operated in consideration of the energy cost per capacity and the CO ₂ emission amount per capacity. Good.

<Fourth embodiment>
The first to third embodiments have been described above. Subsequently, a fourth embodiment will be described. In the fourth embodiment, the operating state values (power consumption, gas consumption, total gas consumption prediction) in the operating state of GHP 10 or EHP 40 (a state where suppression control is performed or a normal operating state where suppression control is not performed). Amount, total power consumption forecast amount, etc.), and after setting the air conditioner that can be the target of suppression control based on the basic rate of gas rate and power rate, etc., the control processing in the first to third embodiments is performed. This is an embodiment for executing arbitrarily combined control.

  Hereinafter, the configuration and control of the controller 70 in the fourth embodiment will be described. In addition, about the apparatus similar to 1st Embodiment-3rd Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

(1) Configuration FIG. 13 is a schematic configuration diagram of a controller 70 according to the fourth embodiment. As illustrated in FIG. 13, the control unit 75 of the controller 70 according to the fourth embodiment further includes a determination unit 75p and a setting unit 75q. The operations of the determination unit 75p and the setting unit 75q will be described later.

(2) Control FIG. 14 is a flowchart showing processing of the controller 70 according to the fourth embodiment.

  Hereinafter, the control of the controller 70 in the fourth embodiment will be described with reference to FIG.

  First, in step S41, the cumulative gas consumption of the gas type equipment including the GHP 10 and the cumulative power consumption of the electric equipment including the EHP 40 are calculated. In step S42, a predicted total gas consumption amount and a total power consumption amount are calculated.

  In step S43, the determination unit 75p determines whether the total power consumption prediction amount and the total gas consumption prediction amount exceed the contract power amount and the contract gas amount, respectively. When it determines with exceeding, it transfers to step S44, and when it determines with it not exceeding on the other hand, it transfers to step S47.

  In step S44, the determination unit 75p determines whether or not to allow an excess cost. When it determines with permitting, it transfers to step S45, and on the other hand, when it determines with not permitting, it transfers to step S46.

  In step S45, the excess cost calculation unit 75o calculates the gas excess cost of the gas type equipment including the GHP 10 and the electric excess cost of the electric equipment including the EHP 40. Next, the setting unit 75q sets only the air conditioners included in the higher equipment among the gas excess cost and the electricity excess cost calculated by the excess cost calculation unit 75o as targets for suppression control. That is, the storage unit 72 stores an air conditioner that is a target of suppression control. Here, as a setting method, setting of a flag can be mentioned.

  Here, for example, when the GHP 10 and the EHP 40 are set as targets for suppression control, the setting unit 75q controls the suppression of the air conditioner included in the lower equipment of the gas excess cost and the electricity excess cost. The setting of the target of will be canceled.

  In step S46, the setting unit 75q sets any of the air conditioners GHP10 and EHP40 as the target of suppression control.

  In step S47, the determination unit 75p determines whether the total power consumption prediction amount exceeds the contract power amount. If it is determined that it exceeds, the process proceeds to step S48. On the other hand, if it is determined that it does not exceed, the process proceeds to step S49.

  In step S48, the setting unit 75q sets only the EHP 40 as a target for suppression control. Here, when GHP10 is also set as the target of suppression control, setting unit 75q cancels the setting of the target of suppression control of GHP10.

  In step S49, the determination unit 75p determines whether or not the total gas consumption prediction amount exceeds the contract gas amount. If it is determined that it exceeds, the process proceeds to step S50. On the other hand, if it is determined that it does not exceed, the process proceeds to step S51.

  In step S50, the setting unit 75q sets only GHP10 as a target of suppression control. Here, when EHP 40 is also set as a target of suppression control, setting unit 75q cancels the setting of the target of suppression control of EHP0.

  In step S51, suppression control, driving ability determination control, and the like are executed. Specifically, for an air conditioner set as a target of suppression control, the GHP driving capability suppression control unit 75e and the EHP driving capability suppression control unit 75f perform suppression control and are not set as targets of suppression control. With respect to the air conditioning load calculating unit 75j calculates the air conditioning load of the air-conditioned space S, the balance determining unit 75g determines the air conditioning load of the air-conditioned space S, the operating capacity of the air conditioner set as the target of suppression control, and the like. , Has determined the driving ability. In other words, the air conditioner that can be air-conditioned by the air conditioner whose operation capability is suppressed is controlled so as to be covered by the other air conditioner.

  Here, the processing from step S41 to step S51 is performed at a predetermined time interval (in the present embodiment, at a demand calculation time of 30 seconds or 1 minute intervals).

  Specific control in step S51 includes the following.

  For example, immediately after resetting the cumulative gas consumption and the cumulative power consumption, the cumulative gas consumption and the cumulative power consumption are 0, so that the total gas consumption prediction amount and the total power consumption prediction amount are the contract gas amount and It is considered that the contracted power is not exceeded. Therefore, in this case, NO is determined in step S49, and neither GHP10 nor EHP40 is set as an object of suppression control. Therefore, in step S51, as in the first embodiment, time zone (such as winter morning), GHP10 or EHP40. The balance determining unit 75g determines the operation balance of the GHP 10 and the EHP 40 in consideration of the mechanical characteristics, the air conditioning load of the air-conditioned space S, and the like. And based on this, the driving | running based on this is performed. It should be noted that the same control is performed in step S51 also when the predicted total power consumption and the predicted total gas consumption do not exceed the contracted power amount and the contracted gas amount, respectively.

  Further, for example, when GHP10 and EHP40 are set as the targets of suppression control, when the accumulated power consumption is reset, the accumulated power consumption becomes 0, so that NO is determined in step S47. In this case, if it is determined that the total gas consumption predicted amount exceeds the contract gas amount, only GHP10 is set as the target of suppression control in step S50, but if it is determined that it does not exceed, the GHP10 and EHP40 are similar to the above. Determine the driving balance and drive.

(3) Features In the fourth embodiment, an air conditioner (GHP 10 and / or EHP 40) that is subject to suppression control is set in advance, and control based on this is performed. Therefore, various controls can be selected and performed according to the current GHP10 and EHP40, and eventually the operating status of the gas-type equipment and the electrical equipment including them. That is, since control according to a user's intention can be performed, it contributes to improvement of a user's comfort.

(4) Modified Example When the GHP 10 and the EHP 40 are set as targets for suppression control, in step S51, the process of step S1 shown in FIG. 4 or the processes of steps S4 to S7 may be performed. In this case, as in the control in the first embodiment, the operation balance of the GHP 10 and the EHP 40 (of course, the gas is determined based on the air conditioning load of the air-conditioned space S, the demand time limit of the GHP 10 and the EHP 40, the contract gas amount, the contract power amount, etc. An operation balance in which the consumption amount and the power consumption amount do not exceed the contract gas amount and the contract power amount, respectively, is determined, and control is performed to operate both based on the operation balance. In addition, after performing the process of step S5 or step S7 in step S51, after the process of step S5 or step S7 is complete | finished, after determining NO by step S6 and completing the process of step S1, The process returns to step S41 again and the subsequent processing is repeated. In addition, when GHP10 and EHP40 are set as the object of suppression control, the control shown in FIG. 4 may loop in step S51.

  Moreover, when GHP10 or EHP40 is set as the object of suppression control, you may perform control of step S22-step S25 shown in FIG. 9 as control in step S51. In step S22, the main air conditioner and the sub air conditioner are operated. In this case, the air conditioner set as the target of suppression control is the main air conditioner, and the air conditioner not set as the target of suppression control is the sub air conditioner. It becomes an air conditioner. In this case, when NO is determined in step S23 and after the process of step S25 is completed, the process returns to step S41 again and the subsequent processes are repeated. In addition, when GHP10 or EHP40 is set as the object of suppression control, the control shown in FIG. 9 may loop as the control in step S51.

  In addition, when an air conditioner with a high excess cost is set as a target for suppression control, specifically, the control in step S38 shown in FIG. 12 may be performed as the control in step S51. In this case, since the air conditioner targeted for suppression control is set in step S45, the control is not canceled in step S51. Specifically, as in the control in the third embodiment, the suppression control is performed for the air conditioner included in the equipment with a high excess cost, and the air conditioner included in the equipment with a low excess cost is newly The operating condition of the air conditioner is calculated, and control is performed so as to operate under this operating condition. After step S38 ends, the process returns to step S41 again and the subsequent processing is repeated. Note that when an air conditioner with a high excess cost is set as the target of suppression control, the control starting at step S38 shown in FIG. 12 may be looped as the control at step S51.

  The present invention is applicable to various air conditioning control systems in which GHP and EHP coexist in the air-conditioned space and perform coordinated control.

10 GHP (gas heat pump air conditioner)
40 EHP (electric heat pump air conditioner)
70 Controller (Air conditioning controller)
72 storage unit 75 control unit 75d consumption predicted amount calculation unit 75e GHP driving capability suppression control unit (first driving capability suppression control unit)
75f EHP driving capability suppression control unit (second driving capability suppression control unit)
75g Balance determining unit 75h Control command generating unit 100 Air conditioning control system 111 Compressor (first compressor)
111a Gas engine 411 Compressor (second compressor)
411a Electric motor (electric motor)
B Building
S Air-conditioned space

JP 2007-187342 A

Claims (6)

A gas heat pump air conditioner that has a first compressor (111) that uses a gas engine (111a) as a power source to air-condition an air-conditioned space (S) in a building that has a gas demand contract and a power demand contract (10) and an electric heat pump air conditioner that includes the second compressor (411) using the electric motor (411a) as a power source and performs air conditioning of the air-conditioned space (S) together with the gas heat pump air conditioner (10). 40) and an air conditioning control device (70) for controlling
A storage unit (72) for storing a contract gas amount in a first demand time period and a contract power amount in a second demand time period defined in the gas demand contract and the power demand contract;
Based on the contract gas amount and the contract power amount so that the total energy cost of the gas charge of the gas heat pump air conditioner (10) and the power charge of the electric heat pump air conditioner (40) is suppressed. A control unit (75) for controlling the gas heat pump air conditioner (10) and the electric heat pump air conditioner (40);
An air conditioning control device (70). The control unit (75) is configured so that a gas consumption amount of a gas-type facility device including the gas heat pump air conditioner (10) does not exceed the contract gas amount in the first demand time period and the second demand time period. In order to control the power consumption of the electric equipment including the electric heat pump air conditioner (40) in the contract electric energy,
The air conditioning control device (70) according to claim 1. The control unit (75)
The total gas consumption prediction amount that is the gas consumption prediction amount of the first demand time period at the end of the first demand time period, and the total power consumption prediction amount of the second demand time period at the time of the end of the second demand time period. A predicted consumption calculator (75d) that calculates a predicted power consumption;
A first operating capability suppression control unit (75e) that suppresses the operating capability of the gas heat pump air conditioner (10) when determining that the total gas consumption predicted amount exceeds the contracted gas amount;
A second operating capability suppression control unit (75f) that suppresses the operating capability of the electric heat pump air conditioner (40) when determining that the predicted total power consumption exceeds the contracted power amount;
A balance determination unit (75g) for determining an operation balance of the gas heat pump air conditioner (10) and the electric heat pump air conditioner (40);
Having
The air conditioning control device (70) according to claim 1 or 2. The control unit (75)
Even if one of the gas heat pump air conditioner (10) and the electric heat pump air conditioner (40) can be stopped, both the gas heat pump air conditioner (10) and the electric heat pump air conditioner (40) drive,
The air-conditioning control apparatus (70) according to any one of claims 1 to 3. The storage unit (72)
The first excess cost, which is the energy cost when the gas consumption of the gas-type equipment including the gas heat pump air conditioner (10) exceeds the contract gas amount, and the electricity including the electric heat pump air conditioner (40) A second excess cost, which is an energy cost when the power consumption of the type equipment exceeds the contracted power amount,
The control unit (75)
The total gas consumption prediction amount that is the gas consumption prediction amount of the first demand time period at the end of the first demand time period, and the total power consumption prediction amount of the second demand time period at the time of the end of the second demand time period. A predicted consumption calculator (75d) that calculates a predicted power consumption;
When the total gas consumption prediction amount exceeds the contract gas amount and the total power consumption prediction amount exceeds the contract power amount, the lower one of the first excess cost and the second excess cost is operated. A control command generation unit (75h) for generating a control command;
Having
The air conditioning control device (70) according to claim 1. The first demand time period and the second demand time period are different and partially overlap.
The air conditioning control device (70) according to any one of claims 1 to 5.

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