Control apparatus, control method, and storage medium

Abstract

To provide a control device or the like of a heating medium system capable of easily reducing energy consumption cost.SOLUTION: A table creation unit that creates first and second tables in which respective energy consumption change amounts of the heat source machine and the heat transfer facility in a case where a set temperature of the heat source machine is increased / decreased by a predetermined value by changing the set temperature of the heat source machine by the predetermined value are recorded in association with each operating state; A heat source unit controller that controls the setting temperature of the heat source unit so as to reduce the energy cost of the heat medium system based on a first / second energy cost change amount of the heat medium system when the setting temperature of the heat source unit is increased / decreased by a predetermined value.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a control device, a control method, and a program. [Background technology]

[0002] In buildings such as office buildings, the heating and cooling systems in the target spaces such as rooms are used. For example, Patent Document 1 describes a method for regulating the temperature by driving a heat transfer device such as a pump. The heat medium is supplied through a heat medium circulation circuit from a heat source device that provides heat to the heat medium. The present invention discloses a heat medium system in which a load-side device heats or cools a target space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-112557 Summary of the Invention [Problem to be solved by the invention]

[0004] In many heat transfer systems, the components of the heat source, heat transport equipment, and load side equipment are For example, the temperature setting of the heat source equipment may increase or decrease due to PID control of the equipment, and the heat transfer equipment may In other words, in this heat medium system, the heat source unit When the set temperature of the heat source increases, the flow rate of the heat medium from the heat transport equipment decreases. When the temperature decreases, the flow rate of the heat transfer medium through the heat transfer equipment may be controlled to increase. In such a heat transfer medium system, the heat transfer medium system can be operated while maintaining the function of the load side device. In order to reduce the energy consumption costs of the entire system, it is necessary to balance the output of the heat source equipment and heat transport equipment. However, the energy consumption of the heat source equipment and heat transport equipment is The behavior of consumption varies greatly depending on the system configuration, installation environment, operating status, etc. However, it is difficult to control the heat transfer medium system so that the energy consumption cost of the entire system decreases. It was.

[0005] Therefore, the present invention provides a heat transfer medium system that can easily reduce energy consumption costs. The present invention aims to provide a control device for a system. [Means for solving the problem]

[0006] A control device according to one aspect of the present invention includes a heat source unit for applying heat to a heat medium, and a load control unit for controlling the heat medium. The heat medium is circulated between the heat consuming equipment that exchanges heat with the load, the heat source equipment and the heat consuming equipment. and a heat transfer facility for transferring a heat medium. The first table and the second table are then adjusted by changing the set temperature of the heat source device by a predetermined value. The first table is a table that is generated when the set temperature of the heat source machine is increased by a predetermined value. The change in the energy consumption of the heat source unit when the temperature is increased is the first heat source unit energy consumption The amount of change and the energy consumption of the heat source machine when the set temperature of the heat source machine is decreased by a specified value The amount of change in the second heat source unit energy consumption, which is the amount of change in the second heat source unit energy consumption, is associated with each operating state of the heat source unit. The first table is a table in which the set temperature of the heat source machine is increased by a predetermined value. The first heat transport equipment energy consumption is the change in the energy consumption of the heat transport equipment when The change in the energy consumption of the heat transport equipment when the set temperature of the heat source equipment is decreased by a predetermined value. - The change in the second heat transport equipment energy consumption, which is the change in the consumption, is calculated based on the change in the second heat transport equipment energy consumption during each operation of the heat transport equipment. a table creating unit that creates a table in which the state is associated with the state and the first table is recorded; The amount of change in energy consumption of the first heat source machine and the second heat source machine associated with the current operating state of the heat source machine The change in the energy consumption of the equipment is correlated with the current operating status of the heat transfer equipment in the second table. The amount of change in energy consumption of the first heat transport equipment and the second heat transport equipment an energy consumption change amount acquisition unit that acquires the acquired first heat source machine energy consumption change amount; The set temperature of the heat source machine is adjusted by a predetermined value based on the amount of heat and the change in the energy consumption of the first heat transport equipment. The first energy, which is the change in the energy cost of the heat transfer medium system when The cost change amount is calculated, and the acquired second heat source unit energy consumption change amount and second heat transport equipment When the set temperature of the heat source machine is decreased by a predetermined value based on the change in energy consumption Calculate the second energy cost change amount, which is the change amount of the energy cost of the heat medium system. an energy cost change amount calculation unit, a first energy cost change amount and a second energy cost change amount calculation unit, Based on the cost change amount, the heat source equipment is adjusted so that the energy cost of the heat medium system decreases. and a heat source machine control unit that controls the set temperature.

[0007] According to this aspect, a heat source device for imparting heat to the heat medium and a heat exchange device for exchanging heat between the heat medium and the load are provided. The heat medium is transported so that it circulates between the heat consuming equipment and the heat source equipment and the heat consuming equipment. In a heat medium system including a heat transfer facility, the set temperature of the heat source device is changed by a predetermined value. By doing so, the energy consumption of the heat source machine when the set temperature of the heat source machine is increased / decreased by a predetermined value can be calculated. A first table in which the amount of change in energy consumption is recorded in association with the operating state of the heat source machine, and a second table in which the amount of change in energy consumption is recorded in association with the operating state of the heat source machine The change in energy consumption of the heat transport equipment when the set temperature increases / decreases by a specified value is A second table is created in which the data is recorded in association with the operating status of the transport equipment. Based on the change in energy consumption, the set temperature of the heat source machine is increased by a predetermined value in the current operating state. The first energy, which is the change in the energy cost of the heat transfer medium system when The cost change amount / second energy cost change amount is calculated, and these energy cost change amounts Based on this, the set temperature of the heat source machine is set to reduce the energy cost of the heat medium system. This makes it easy to reduce the energy consumption cost of the heat transfer medium system. This becomes possible. [Effects of the Invention]

[0008] According to the present invention, a heat transfer medium system that can easily reduce energy consumption costs is provided. It is possible to provide a control device for the system. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a diagram showing the configuration of a hot and cold water system 1 according to an embodiment. [Figure 2] 1 is a schematic diagram illustrating an example of a functional configuration of a control device 100 according to an embodiment. [Figure 3] 3 is a schematic diagram showing an example of the data structure of a heat source machine operating state table 111. FIG. [Figure 4] 3 is a schematic diagram showing an example of the data structure of a pump operation status table 112. FIG. [Figure 5] 10 is a schematic diagram showing an example of the data structure of a heat source machine energy consumption change amount table 113. FIG. [Figure 6] 10 is a schematic diagram showing an example of the data structure of a pump energy consumption change amount table 114. FIG. [Figure 7]4 is an operational flow diagram showing an example of operational processing relating to the creation of various tables by a table creation unit 130 of the control device 100 according to the embodiment. FIG. [Figure 8] 10 is an operational flow diagram showing an example of an operational process related to operation balance control by an operation balance control unit 140 of the control device 100 according to the embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] A preferred embodiment of the present invention will be described with reference to the accompanying drawings. Therefore, components with the same reference numerals have the same or similar configurations.)

[0011] FIG. 1 is a diagram showing the configuration of a chilled / hot water system 1 according to an embodiment. The configuration of the hot water system 1 will be described.

[0012] The hot and cold water system 1 is a system for supplying a target water to a target object by a heat medium cooled or heated in a heat source machine. This is a system that supplies heat to the heat load. The heat medium is, for example, brine (antifreeze), water, The mixture may be a mixture of water and a line, or a mixture of water and an additive with a high anticorrosion effect. As an example, water (hot or cold water) is used as the heat medium.

[0013] The hot and cold water system 1 includes, for example, a heat source machine 10, an energy consumption sensor 11, and a hot and cold water An outlet temperature sensor 12, a cold / hot water inlet temperature sensor 13, a forward temperature sensor 14, and a pump 20 a bypass valve 23, a forward primary header 24a, a forward secondary header 24b, and a return header 25; , a bypass pipe 26, a bypass valve 27, an air conditioner 30, a flow control valve 31, and a control device and a device 100.

[0014] These components of the hot and cold water system 1 form a hot and cold water circulation system as an example of a heat medium circulation circuit. The cold and hot water flows from the heat source unit 10 through the cold and hot water circulation circuit as the outgoing cold and hot water. The hot water flows from the air conditioner 30 to the hot water circulation circuit as return hot water. The hot and cold water flows from the hot water circulating circuit to the heat source unit 10. The required cold and hot water transport capacity varies depending on the installation location, etc. A water circulation system may also be included.

[0015] The hot and cold water system 1 may include, for example, one or more heat source units 10. For example, under the control of a heat source device control device (not shown), fuel (gas, etc.) and electricity are used. It consumes heat to generate heat or obtains heat from the outside air using an auxiliary heat source (not shown). The heat generated by the condenser is transferred to the cold or hot water, thereby cooling or heating the cold or hot water. The heat obtained is cold heat obtained from the outside air by utilizing the thermal properties of a substance due to a change in state. or produced by converting chemical energy into thermal energy through the combustion of fuel The heat source device 10 may be, for example, an unillustrated device that configures a refrigerant circuit that circulates a refrigerant. The refrigeration cycle device shown in FIG. 1 is used to cool or heat water. good.

[0016] The heat source unit 10 has, for example, a set temperature S for cold and hot water. The set value SPC [°C] and the hot water temperature set value SPH [°C] may be included. The set temperature S may be stored in a predetermined storage unit or may be displayed externally so that it can be seen. For example, the machine 10 may set the set temperature S by a predetermined amount within a range from a predetermined minimum value to a predetermined maximum value. In this embodiment, the hot and cold water system 1 is configured to be able to adjust the temperature step by step. All of the at least one heat source unit 10 are controlled by a common set temperature. However, at least one heat source unit 10 included in the hot and cold water system 1 is The other heat source units 10 may be controlled at a different set temperature from the other heat source units 10.

[0017] Each heat source machine 10 is provided with, for example, an energy consumption sensor 11 for the heat source machine 10. The energy consumption sensor 11 detects, for example, the energy consumption of the heat source device 10. Here, the energy consumption is the energy required to generate heat for adding to the hot and cold water. Energy consumption may be defined as the amount of energy consumed per unit time of a given source. For example, if the heat source device 10 is a fuel combustion type, the amount of fuel (gas) burned per unit time is It may be specified as a volume (unit: [m^3 / s], etc.), or if the heat source machine 10 is an electric type, In this case, it may be specified as power (unit: [kW], etc.).

[0018] On the downstream side of each heat source unit 10, individual pipes extend from each heat source unit 10 to the outgoing primary header 24a. The hot and cold water flowing through each pipe joins together at the primary header 24a. The outlet temperature sensor 12 is provided, for example, on the downstream side of each heat source device 10 in an individual pipe. The hot water outlet temperature TO is measured. The cold hot water outlet temperature TO is, for example, the cold water outlet temperature The water outlet temperature TOC [℃] and the hot water outlet temperature TOH [℃] are included. Good too.

[0019] On the upstream side of each heat source unit 10, individual pipes extend from each heat source unit 10 to a return header 25, The return hot and cold water flowing through each pipe from the return header 25 flows to each heat source unit 10. The temperature sensor 13 is provided, for example, on the upstream side of each heat source device 10 in an individual pipe, and The inlet temperature TI is measured. The inlet temperature TI is, for example, the inlet temperature of the cold water. The hot water inlet temperature TIC [℃] and the hot water inlet temperature TIH [℃] may be included. stomach.

[0020] The supply temperature sensor 14 is provided, for example, in the supply primary header 24a and measures the cold / hot water supply temperature TS. The cold / hot water supply temperature TS is, for example, the cold water supply temperature TCS [℃], which is the supply temperature of the cold water, and The hot water supply temperature THS [°C] may also be included.

[0021] The pump 20 is an example of a heat transfer facility, and consumes electricity or the like to generate power and The cold and hot water is circulated between the heat source unit 10 and the air conditioner 30 in the cold and hot water circulation circuit by power. The pump 20 has a function of circulating the liquid. The pump 20 is controlled by a pump control device (not shown), for example. The cold and hot water in the cold and hot water circulation circuit is sucked in and sent out under pressure. The pump 20 includes, for example, a primary pump 21 and a secondary pump 22. That's fine too.

[0022] The hot and cold water system 1 includes, for example, one or more primary ports provided upstream of the heat source unit 10. The primary pump 21 may be provided downstream of the heat source unit 10. The heat source device 10 has specifications for the flow rate of hot and cold water (rated flow rate) and the allowable flow rate for maintenance. The primary pump 21 controls the flow rate of the hot and cold water in the heat source unit 10. This pump adjusts the flow rate to a range with the minimum value as the lower limit and the rated flow rate as the upper limit. The secondary pump 21, for example, adjusts the outlet temperature of the hot and cold water so as not to cause any problems in the operation of the air conditioner 30. It is controlled based on TO and the hot and cold water inlet temperature TI, etc.

[0023] The control method of the primary pump 21 is, for example, variable control (controlling the motor rotation speed by an inverter) Specifically, the primary pump 21 may be The allowable minimum value is set as the lower limit, and the rated flow rate of the heat source device 10 is set as the upper limit. The control instruction value is calculated from the flow rate of the hot and cold water on the load side, and the inverter frequency is This is controlled by changing the set value of the number of pumps to adjust the flow rate of the hot and cold water on the heat source side (primary pump flow rate). In addition, when the primary pump 21 cannot be variably controlled, is only when the flow rate of the hot and cold water at the rated operation of the primary pump 21 exceeds the rated flow rate of the heat source machine. The opening of a valve (not shown) on the discharge side of the primary pump 21a is changed in advance to physically The flow rate of chilled or hot water may be restricted. In this case, the flow rate of chilled or hot water on the load side may be adjusted to match the fluctuation of the flow rate. The primary pump 21 may be used in a case where a plurality of hot and cold water circulation circuits are provided. When the system is configured to include a chilled / hot water circulation system, each chilled / hot water circulation system shall be controlled by the same frequency. However, if primary pumps 21 with different capacities are mixed in the system, The frequency of the primary pump 21 may be different.

[0024] The hot and cold water system 1 may include, for example, one or more secondary pumps 22. The pump 22 is, for example, a pump provided downstream of the outgoing primary header 24a via individual piping. In order to prevent any disruption to the operation of the air conditioner 30, the hot and cold water in the heat exchanger of the air conditioner 30 is In other words, the flow rate is adjusted to exceed the total flow rate of the hot and cold water of all the secondary pumps 22. The total flow rate of the hot and cold water in the heat exchangers of all the air conditioners 30 is "(amount) > total flow rate of the hot and cold water in the heat exchangers of all the air conditioners 30".

[0025] The secondary pump 22 is configured to measure the heat transfer medium of the heat exchanger, which is determined by calculation of direct or indirect measurement, for example. The control instruction value is calculated from the flow rate of the heat transfer medium on the load side by changing the inverter frequency setting. Control may also be achieved by adjusting the flow rate of the blood (secondary pump flow rate). For example, a preset value can be calculated from the flow rate of the heat medium in the heat exchanger, which is determined by calculation of direct or indirect measurements. Select the combination of pumps to operate and instruct each pump to start and stop. By increasing / decreasing the number of secondary pumps 22, the flow rate of the heat medium on the load side (secondary pump The secondary pump 22 may adjust the flow rate of the cold / hot water. If the system includes a water circulation system, each hot and cold water circulation system shall be controlled by the same frequency. However, if secondary pumps 22 with different capacities are mixed in the system, The frequency of the pump 22 may be different.

[0026] The bypass valves 23 are connected in parallel to the respective secondary pumps 22. The hot and cold water that exceeds the flow rate of the hot and cold water in the heat exchanger of the main pump 30 is bypassed from the outlet side of the secondary pump 22. It passes through the pass valve 23 and returns to the inlet side of the secondary pump 22 .

[0027] The bypass pipe 26 is a pipe that connects the outgoing primary header 24 a and the return header 25 . The bypass pipe 26 allows the cold and hot water that is not sent to the air conditioner 30 to bypass the outflow header 24. The bypass valve 27 is configured to allow the bypass pipe 26 to be fed to the return header 25. It is installed inside and adjusts the flow rate of cold and hot water passing through the bypass pipe 26.

[0028] The air conditioner 30 is an example of a heat consuming facility, and is used for heat exchange between air (an example of a load) and hot and cold water. A heat exchanger (not shown) for heat exchange and a fan (not shown) for sending air to the heat exchanger are provided. The hot and cold water system 1 is a device for heating or cooling air. The air conditioner 30 may be provided with one or more fan coil units. , and air handling units, etc.

[0029] A corresponding flow control valve 31 is provided downstream of each air conditioner 30. The flow control valve 31 may be configured as a two-way valve or a three-way valve, for example. The flow control valve 31 may be provided upstream of the air conditioner 30. The flow control valve 31 is connected to the heat exchanger via a pipe. The flow rate of the hot and cold water in the heat exchanger is adjusted by adjusting the opening of the flow control valve 31. The air conditioner 30 and the flow control valve 31 are configured to be adjustable. The opening degree of the flow control valve 31 may be controlled by, for example, the air conditioner 3 The difference between the temperature of the air (supply air) after heat exchange measured by 0 and the set temperature of the air conditioner 30 Alternatively, the difference between the air flow rate of the heat exchanger and the air flow rate of the heat exchanger may be calculated. The rotation speed of the fan may be controlled to adjust the amount of air. The hot and cold water that has flowed out through the valve 31 flows into the return header 25 as return hot and cold water.

[0030] The control device 100 has a memory that stores data and programs, and controls the data based on the programs. A computer or information processor that performs information processing on data, etc. The memory may be, for example, a random access memory that can temporarily store data. Volatile storage devices such as RAM (random access memory), hard disks, and other devices that store data for long periods of time. The processor may include a non-volatile secondary storage device such as a flash memory. For example, CPU (Central Processing Unit) and MPU (Microprocessor Unit) The program stored in the control device 100 may be a programmable logic unit (PLC), ... The program is transmitted to the control device 10 via a non-transitory computer-readable storage medium. The control device 100 may be provided to a heat source device control device, a pump control device, or the like, which are not shown. A control device capable of executing at least some of the functions of the air conditioner control device and the air conditioner control device It may be configured to be capable of

[0031] FIG. 2 is a schematic diagram showing an example of the functional configuration of the control device 100 according to the embodiment. The device 100 includes, for example, a storage unit 110 and a processing unit 120. The storage unit 110 includes, for example, For example, a heat source machine operating state table 111, a pump operating state table 112, and a heat source machine energy The energy consumption change amount table 113 and the pump energy consumption change amount table 114 are stored. do.

[0032] FIG. 3 is a schematic diagram showing an example of the data structure of the heat source unit operating state table 111. As shown in FIG.

[0033] The heat source machine operating state table 111 records the operating state of the heat source machine 10 (heat source machine operating state). The heat source device operating status table 111 is, for example, as shown in FIG. The heat source machine operation status ID is used to identify the machine operation status. This may include the number of operating machines, the set temperature S, the chilled / hot water outlet temperature TO, and the chilled / hot water inlet temperature TI.

[0034] The number of operating heat source units is the number of operating heat source units 10 among at least one heat source unit 10 provided in the hot and cold water system 1. The number of operating heat source machines is, for example, the number of operating heat source machines 10. The set temperature S can be obtained from the heat source device operating in the hot and cold water system 1. The set temperature S is the cold water set temperature SC [℃] or the hot water set temperature SC [℃]. The set temperature S may be a constant temperature SH [°C]. For example, the set temperature S is input from a heat source device control device (not shown). The chilled / hot water outlet temperature TO is the chilled / hot water temperature detected by the chilled / hot water outlet temperature sensor 12. The hot water outlet temperature [℃]. The cold water outlet temperature TO is the cold water outlet temperature It may be the TOC [℃], or the hot water outlet temperature TOH [℃]. The hot water inlet temperature TI is the inlet temperature [°C] of the cold / hot water detected by the cold / hot water inlet temperature sensor 13. The cold water inlet temperature TI is the cold water inlet temperature TIC [℃], or may be the hot water inlet temperature TIH [°C], which is the inlet temperature of the hot water.

[0035] FIG. 4 is a schematic diagram showing an example of the data structure of the pump operation status table 112. The pump operation status table 112 shows the operation status of the pump 20 (the primary pump 21 and the secondary pump 22). The pump operation status table 112 is a table that records the status (pump operation status). For example, as shown in Figure 4, the pump operation status is used as identification information to identify the pump operation status. The number of pumps in operation, pump operating frequency F, and chilled / hot water supply temperature T associated with the status ID May contain S.

[0036] The number of pumps in operation is the number of pumps in operation out of at least one pump 20 provided in the chilled / hot water system 1. The number of pumps in operation is, for example, the number of pumps 20 in operation. The pump operating frequency F can be obtained from the device. The pump operating frequency F is the operating frequency F [Hz] of the pump 20. The value may be different for each pump 20, or the same value may be used for multiple pumps 20 in operation. In particular, the pumps 20 (primary pumps 20) belonging to the same hot and cold water circulation system may have the same value. The pump operating frequency F of the first and second pumps 22 may be the same. F can be obtained from, for example, a pump control device (not shown). The temperature [°C] of the outgoing cold / hot water detected by the temperature sensor 14. The outgoing cold / hot water temperature TS is , the temperature of the cold water supply, TSC [℃], or the temperature of the hot water supply, TSC [℃] The temperature may be TSH [°C].

[0037] FIG. 5 is a schematic diagram showing an example of the data structure of the heat source machine energy consumption change amount table 113. The heat source machine energy consumption change amount table 113 is an example of a first table, and is The heat source machine energy of the heat source machine 10 when the set temperature S of the heat source machine 10 changes by a predetermined value - Changes in consumption (changes in energy consumption of heat source equipment) are recorded in association with the operating status of the heat source equipment The heat source machine energy consumption change amount table 113 is, for example, a table shown in FIG. As shown, the energy consumption of the heat source machine before the change, ER, is associated with the heat source machine operating status ID. , the post-change energy consumption E of the heat source machine when the set temperature S of the heat source machine 10 is increased by a predetermined value UR, the amount of change in energy consumption of the heat source machine ΔEUR, and the set temperature S of the heat source machine 10 The energy consumption of the heat source machine after the change when the fixed value is decreased, and the energy consumption of the heat source machine after the change The change in the consumption electric energy may include the change in the consumption electric energy ΔEDR.

[0038] The heat source machine operating state ID included in the heat source machine energy consumption change amount table 113 is This corresponds to the heat source machine operation state ID included in the operation state table 111. The energy consumption amount ER is the energy consumption of the heat source unit 10 in the heat source unit operating state indicated by the heat source unit operating state ID. The energy consumption of the heat source machine before the change ER is, for example, the energy consumption of the heat source machine 10. When the ghee source is gas, the volume of gas consumed per unit time (unit: [m ^3 / s], or when the energy source of the heat source device 10 is electricity, power (unit :[kW], etc.

[0039] The post-change energy consumption of the heat source unit EUR is calculated by increasing the set temperature S of the heat source unit 10 by a predetermined value. The energy consumption of the heat source machine 10 after the change is shown in FIG. The energy consumption EUR is the same as the energy consumption ER of the heat source unit before the change, for example, When the energy source of 10 is gas, the volume of gas consumed per unit time (Unit: [m^3 / s], etc.), or when the energy source of the heat source device 10 is electricity , may be specified as power (unit: [kW] etc.). Heat source energy consumption change ΔE UR (an example of the first energy consumption change amount) is the energy consumption amount of the heat source unit before the change ER. This is the difference with the energy consumption of the subsequent heating unit EUR, i.e., EUR-ER.

[0040] The post-change energy consumption of the heat source device EDR is calculated by decreasing the set temperature S of the heat source device 10 by a predetermined value. The energy consumption of the heat source machine 10 after the change is shown in FIG. The energy consumption EDR is the same as the energy consumption ER of the heat source machine before the change, for example, When the energy source of 10 is gas, the volume of gas consumed per unit time (Unit: [m^3 / s], etc.), or when the energy source of the heat source device 10 is electricity , may be specified as power (unit: [kW] etc.). Heat source energy consumption change ΔE DR (an example of the first energy consumption change amount) is the energy consumption amount of the heat source unit before the change ER and the change amount This is the difference between the energy consumption of the post-heat source machine EDR, i.e., EDR-ER.

[0041] FIG. 6 is a schematic diagram showing an example of the data structure of the pump energy consumption change amount table 114. The pump energy consumption change amount table 114 is an example of the second table, and is When the set temperature S of the heat source device 10 changes by a predetermined value, the pump 20 (primary pump 21 and the secondary pump 22) pump energy consumption change (pump energy consumption change ) is a table in which the pump energy consumption is recorded in association with the pump operation state. The reduction amount table 114 is, for example, as shown in FIG. 6, associated with the pump operation state ID. In addition, the pump operating frequency FP before the change, the pump energy consumption EP before the change, and the setting of the heat source unit 10 When the constant temperature S increases by a predetermined value, the pump operating frequency FUP after the change, the pump energy Energy consumption EUP, pump energy consumption change ΔEUP, and When the set temperature S is decreased by a predetermined value, the pump operating frequency FDP after the change, The energy consumption EDP and the pump energy consumption change ΔEDP may be included.

[0042] The pump operating state ID included in the pump energy consumption change amount table 114 is This corresponds to the pump operation status ID included in the operation status table 112. The operating frequency FP is the operating frequency of the pump 20 in the pump operating state indicated by the pump operating state ID. The pump energy consumption before change EP is the pump operating state indicated by the pump operating state ID. In particular, the pump 20 is used for each hot and cold water system in the same manner. When the pump is controlled at a single operating frequency F, the pump energy consumption before the change EP is The pre-change pump energy consumption may be defined as the sum of the energy consumptions of the pumps 20. The energy consumption EP may be specified as power (unit: [kW], etc.).

[0043] The post-change pump operating frequency FUP is the frequency after the set temperature S of the heat source device 10 increases by a predetermined value. This is the operating frequency of each pump 20 when the pump is in operation. The consumption EUP is the amount of heat generated when the pump is operating after the set temperature S of the heat source device 10 has increased by a predetermined value. In particular, the pump 20 is the sum of the energy consumption amounts for each hot and cold water system. When controlled at the same operating frequency F, the pump energy consumption EUP after the change is The post-change pump energy The pump energy consumption EUP may be specified as power (unit: [kW], etc.). - Consumption change amount ΔEUP (an example of the second energy consumption change amount) is the pump energy before change The difference between the consumption EP and the pump energy consumption EUP after the change, i.e., EUP-EP. be.

[0044] The post-change pump operating frequency FDP is the frequency after the set temperature S of the heat source device 10 is reduced by a predetermined value. This is the operating frequency of each pump 20 when the pump is in operation. The consumption amount EDP is the amount of heat generated when the pump is operating after the set temperature S of the heat source device 10 has decreased by a predetermined value. In particular, the pump 20 is the sum of the energy consumption amounts for each hot and cold water system. When controlled at the same operating frequency F, the pump energy consumption EDP after the change is The post-change pump energy The pump energy consumption EDP may be specified as power (unit: [kW], etc.). - Consumption change ΔEDP (an example of the second energy consumption change) is the pump energy before change The difference between the consumption EP and the pump energy consumption EDP after the change, i.e., EDP-EP. be.

[0045] 2 again, the processing unit 120 included in the control device 100 will be described. The system 120 includes a table creation unit 130 and an operation balance control unit 140.

[0046] The table creating unit 130 creates, for example, a heat source machine operation status table 111, a pump operation status table 112, and Table 112, heat source machine energy consumption change amount table 113, and pump energy consumption The table creating unit 130 creates tables such as the change amount table 114. A state information acquisition unit 131, an energy consumption acquisition unit 132, a heat source machine control unit 133, and an energy and an energy consumption change calculation unit 134.

[0047] The operating state information acquisition unit 131 acquires, for example, information indicating the operating state of the heat source machine 10 (heat source machine operating state The operation status information acquisition unit 1 acquires the operation status information and records it in the heat source machine operation status table 111. 31 indicates whether the heat source machine 10 is operating or not, for example, from a heat source machine control device (not shown). The operation status information acquisition unit 131 may collect the information and By calculating the number of operating heat source machines 10 in the system 1, the number of operating machines is obtained. The operating state information acquisition unit 131 may acquire information about the operating state of the heat source machine from a heat source machine control device (not shown), for example. The operating state information acquisition unit 131 may acquire the set temperature S of the hot and cold water outlet 10. The temperature sensor 12 detects the chilled / hot water outlet temperature TO (the chilled water outlet temperature TOC [ ℃], or the hot water outlet temperature TOH [℃]) may be acquired. The state information acquisition unit 131 acquires, for example, the cold / hot water inlet temperature TI( The cold water inlet temperature TIC [℃] or the hot water inlet temperature TIC [℃] The operation status information acquisition unit 131 may acquire, for example, the temperature of the pump 20 and obtains information indicating the operation status of the pump (pump operation status information) and stores it in the pump operation status table 112. The operation status information acquisition unit 131 receives, for example, the pump status information from a pump control device (not shown). The operating status information acquisition unit 131 may acquire information indicating whether the pump 20 is operating. The information is collected to calculate the number of pumps 20 in operation in the hot and cold water system 1. The operation status information acquisition unit 131 may acquire the number of operating units by, for example, The pump control device shown in FIG. 1 outputs the operating period of the pump 20 operating in the chilled / hot water system 1. The operating frequency F may be obtained for each pump 20 in operation. The values ​​may be different or may be the same for multiple pumps 20 in operation. In particular, the pumps 20 (primary pump 21 and secondary pump 22) belonging to the same hot and cold water circulation system 22) The pump operating frequency F may be the same.

[0048] The energy consumption acquisition unit 132 acquires, for example, the heat source machine energy consumption ER (chilled / hot water system Generate heat to be added to hot and cold water in all heat source machines 10 operating in the system 1. The total amount of energy consumed per unit time for the heat source equipment is acquired, and the operating status of the heat source equipment is The amount of change in energy consumption by the heat source machine is recorded in association with the ID in the table 113. For example, when the heat source machine 10 is a fuel combustion type, the cost acquisition unit 132 is provided in the heat source machine 10. The heat source machine energy consumption ER may be acquired from the installed energy consumption sensor 11. Furthermore, for example, when the heat source unit 10 is an electric type, the energy consumption acquisition unit 132 By calculating the heat source equipment energy consumption ER based on the formula, - Consumption amount ER may be obtained. Heat source machine energy consumption ER [kW] = Heat source machine rated power consumption [kW] * (heat source machine operating period Wave number [Hz] / heat source equipment rated frequency [Hz])^3

[0049] The energy consumption acquisition unit 132 acquires, for example, the pump energy consumption EP (heated / cold water system The energy consumption per unit time of all pumps 20 operating in system 1 The pump energy consumption change amount is calculated by matching it with the pump operation status ID. The energy consumption acquisition unit 132 records the energy consumption in the table 114. After acquiring various parameters from the control device, the pump engine is controlled based on the parameters. The pump energy consumption EP is obtained by calculating the energy consumption EP. The energy consumption acquisition unit 132 may calculate the pump energy consumption based on the following formula, for example: - Consumption EP may be calculated. Pump energy consumption EP [kW] = Pump rated power consumption [kW] * (Pump operating cycle Wave number [Hz] / Rated pump frequency [Hz]^3

[0050] For example, the heat source machine control unit 133 may set the set temperature of the heat source machine 10 when creating various tables. The heat source machine control unit 133 controls the set temperature S of the heat source machine 10 to a predetermined value. The predetermined value may be changed (increased or decreased) by, for example, The temperature setting value S of the heat source unit 10 may be the smallest unit for changing the temperature setting value S of the heat source unit 10.

[0051] In addition, the predetermined value is the temperature when the set temperature S of the heat source device 10 is increased by the predetermined value. The change in the first variable that defines the energy consumption ER of the heat source machine and the set temperature S of the heat source machine 10 The first variable that defines the heat source machine energy consumption ER when the The first variable may be small enough to be equated with the amount of change in the number. It may be the consumption amount, or the operating frequency of the heat source machine 10 when the heat source machine 10 is an electric type. It's okay to have one.

[0052] In addition, the predetermined value is the temperature when the set temperature S of the heat source device 10 is increased by the predetermined value. The change in the second variable that determines the energy consumption EP of the pump 20 and the setting of the heat source machine 10 The energy consumption EP of the pump 20 when the temperature S is reduced by the predetermined value is defined. The second variable may be small enough to be equated with the amount of change in the second variable. The energy consumption change amount calculation unit 134 may be configured to calculate the operating frequency of the heat source unit 10. When the constant temperature S is changed, the amount of change in energy consumption of the heat source device 10 and the pump 20 is The energy consumption change calculation unit 134 calculates the calculated energy consumption change. are recorded in various tables.

[0053] The energy consumption change amount calculation unit 134 may calculate, for example, "When the set temperature S is reduced by a predetermined value" and "When the set temperature S is reduced by a predetermined value" Calculate the "change in energy consumption of the heat source equipment ΔEDR" when The energy consumption change amount calculation unit 134 records the change amount in the change amount table 113. "When the constant temperature S is increased by a predetermined value," "the amount of change in pump energy consumption ΔEUP" and "Change in pump energy consumption ΔEDP" when "Set temperature S is decreased by a specified value" is calculated and recorded in the pump energy consumption change amount table 114.

[0054] For example, when creating various tables, the determination unit 135 determines whether the heat source unit 10 and the pump 20 The determining unit 135 determines the operating state of the heat source unit 10, for example, by increasing the set temperature S of the heat source unit 10. In order to check whether or not control to increase the temperature is possible, the set temperature S of the heat source device 10 is set to the maximum value. For example, the determination unit 135 may determine whether or not the set temperature S of the heat source unit 10 is decreased. In order to check whether or not it is possible to control the temperature so that the set temperature S of the heat source device 10 is the minimum value, For example, the determination unit 135 may determine whether the set temperature S of the heat source unit 10 is decreased. By controlling the pump 20 to increase the output, it is possible to confirm whether the output of the pump 20 can be increased. To do this, the determining unit 135 may determine whether the pump 20 is not in a maximum operating state. For example, by controlling the heat source device 10 to increase the set temperature S, the output of the pump 20 The pump 20 is at minimum operating condition to see if power can be reduced. It may be determined whether or not the

[0055] The operation balance control unit 140 calculates, for example, the energy consumption cost of the entire hot and cold water system 1. The operation balance control unit 140 controls the set temperature S of the heat source unit 10 so that For example, the operation state determination unit 141, the energy cost change amount calculation unit 142, and the heat source machine control unit The device includes a processing unit 143 and a determination unit 144.

[0056] The operating state determination unit 141, for example, acquires various parameters of the heat source unit 10 and then determines the operating state of the heat source unit 10. The current operating state of the heat source unit 10 is determined by referring to the heat source unit operating state table 111. Specifically, for example, the operation state determination unit 141 receives the heat source machine operation status from a heat source machine control device (not shown). The number and set temperature S are acquired, and the cold / hot water outlet temperature TO is acquired from the cold / hot water outlet temperature sensor 12. The chilled / hot water inlet temperature TI is acquired from the chilled / hot water inlet temperature sensor 13. The operating state determination unit 141 refers to the heat source machine operation status table 111 and calculates the acquired information (number of heat source machines in operation, Set temperature S, cold / hot water outlet temperature TO, cold / hot water inlet temperature TI) (error is within a specified range) The operating state in which the heat source unit 10 is in a non-operating state (including the case where the heat source unit 10 is in a non-operating state) is determined as the current operating state of the heat source unit 10.

[0057] The operating state determination unit 141, for example, acquires various parameters of the pump 20 and then determines the pump The pump operation status table 112 is referenced to determine the current operation status of the pump 20. Specifically, for example, the operation state determination unit 141 acquires information on whether or not each pump 20 is operating, and then determines The number of pumps 20 in operation is calculated as the number of pumps in operation. The operation state determination unit 141 acquires the pump operation frequency F from each pump 20. The pump operation status table 112 is referenced to obtain the acquired information (number of pumps in operation, The operating state corresponding to the pump operating frequency F is determined as the current operating state of the pump 20. .

[0058] The energy cost change calculation unit 142 calculates the amount of change in the energy cost when the set temperature S of the heat source unit 10 is increased by a predetermined value. The energy cost is the change in the energy cost of the hot and cold water system 1 when The change amount ΔCUS (an example of the first energy cost change amount) and the set temperature S of the heat source device 10 are The change in the energy cost of the hot and cold water system 1 when the fixed value is reduced by The energy cost change amount ΔCDS (an example of a second energy cost change amount) is calculated.

[0059] The energy cost change amount ΔCUS is, for example, the heat source machine energy cost change amount ΔCUR and the pump energy cost change amount ΔCUP. The energy cost change amount ΔCUR is calculated by the following formula: This is the change in energy costs equivalent to the change in energy consumption of the heat source equipment ΔEUR. In addition, the pump energy cost change amount ΔCUP is calculated by dividing the set temperature S of the heat source device 10 by the predetermined value. The energy cost equivalent to the pump energy consumption change ΔEUP when the pump In particular, the pump 20 is controlled at the same operating frequency F for each hot and cold water system. In this case, the pump energy cost change amount ΔCUP is the pump energy cost change amount for each system. It may be defined as the sum of the amounts.

[0060] The energy cost change amount ΔCDS is, for example, the heat source energy cost change amount ΔCDR and the pump energy cost change amount ΔCDP. The energy cost change amount ΔCDR is calculated by the following formula: The change in energy cost equivalent to the change in energy consumption of the heat source equipment ΔEDR is In addition, the pump energy cost change amount ΔCDP is calculated by dividing the set temperature S of the heat source unit 10 by the specified value. The energy cost equivalent to the pump energy consumption change ΔEDP when the pump In particular, the pump 20 is controlled at the same operating frequency F for each hot and cold water system. In this case, the pump energy cost change amount ΔCDP is the pump energy cost change amount for each system. It may be defined as the sum of the amounts.

[0061] Changes in each energy cost (heat source energy cost changes ΔCUR, ΔCDR, The change in energy cost (ΔCUP, ΔCDP) is calculated by multiplying the change in energy consumption by the amount of energy consumed. The cost unit of the energy source of the heat source device 10 is calculated by multiplying the cost of the energy source by the cost of the energy source. , the cost unit price of the gas when the energy source of the heat source device 10 is gas (unit: [ yen / m^3, etc.), or when the energy source of the heat source device 10 is electricity, Alternatively, the cost unit of the electricity (unit: yen / kW, etc.) may be used. The cost unit of the energy source is the cost of the electricity when the energy source of the pump 20 is electricity. It may be a cost unit price (unit: [yen / kW], etc.). These cost unit prices are current prices. Alternatively, it may be a value calculated by any method.

[0062] The heat source machine control unit 143 calculates the cooling amount when the set temperature S of the heat source machine 10 is increased by a predetermined value. The energy cost change amount ΔCUS is the change amount of the energy cost of the hot water system 1, The energy consumption of the hot and cold water system 1 when the set temperature S of the heat source device 10 is reduced by a predetermined value. - Based on the change in energy cost ΔCDS, which is the change in cost, The set temperature S of the heat source device 10 is controlled so that the energy cost of 1 is reduced. For example, when the set temperature S of the heat source unit 10 increases by a predetermined value, the heat source unit control unit 143 The change in energy cost of the hot and cold water system 1 in If CUS is less than zero, the heat source device 10 increases the set temperature S of the heat source device 10 by a predetermined value. In addition, the heat source machine control unit 143 may, for example, The change in the energy cost of the hot and cold water system 1 when the energy consumption is reduced by If the cost change amount ΔCDS is less than zero, the heat source machine 10 sets the set temperature S Alternatively, the heat source machine control unit 143 may reduce the energy cost by a predetermined value. When the change in cost ΔCUS and the change in energy cost ΔCDS are both positive values, The set temperature S of the heat source machine 10 may be maintained. The control of the set temperature S of 10 may be performed according to the determination result of the determining unit 144.

[0063] For example, when the heat source machine control unit 143 controls the heat source machine 10, the determination unit 144 The determination unit 144 determines the operating status of the heat source unit 10 and the pump 20. In order to confirm whether it is possible to control the temperature setting S of the heat source device 10 to increase the temperature setting S of the heat source device 10, The determination unit 144 may determine whether the constant temperature S is not the maximum value. In order to check whether it is possible to control the temperature setting S of the heat source device 10 to decrease the setting temperature S, The determination unit 144 may determine whether the temperature S is not the minimum value. By controlling the set temperature S to decrease, the output of the pump 20 can be increased. To determine whether or not this is the case, it may be determined whether or not the pump 20 is not operating at full capacity. For example, the determination unit 144 may perform control to increase the set temperature S of the heat source unit 10. Therefore, the pump 20 is checked to see if the output of the pump 20 can be reduced. It may be determined whether the minimum operating condition is not met.

[0064] FIG. 7 shows various tables created by the table creating unit 130 of the control device 100 according to the embodiment. 1 is an operational flow diagram showing an example of an operational process related to the creation of a fuel-burning The following description will be given assuming that the method is a baking method.

[0065] (S101) The determination unit 135 determines whether the set temperature S of the heat source unit 10 is the maximum value. 35 determines that the set temperature S of the heat source device 10 is not the maximum value (S101; Yes), The process proceeds to step S102.

[0066] (S102) The determination unit 135 determines whether the pump 20 is not in a minimum operating state. If it is determined that the pump 20 is not in the minimum operating state (S102; Yes), the process returns to step Proceed to step S103.

[0067] (S103) The operating state information acquisition unit 131 acquires heat source machine operating state information indicating the operating state of the heat source machine 10. The heat source unit operation status ID is associated with the heat source unit operation status ID and recorded in the heat source unit operation status table 111. In this case, the operating status information acquisition unit 131 acquires information on the operating status of the heat source machine 10 from a heat source machine control device (not shown). The number is obtained, and the number is recorded in the heat source machine operation status table 111 in association with the heat source machine operation status ID. The operating state information acquisition unit 131 also receives the set temperature S and obtains the chilled / hot water outlet temperature TO from the chilled / hot water outlet temperature sensor 12, and obtains the chilled / hot water inlet temperature After obtaining the cold / hot water inlet temperature TI from sensor 13, it corresponds to the heat source machine operating status ID. The result is recorded in the heat source machine operating status table 111.

[0068] (S104) The energy consumption acquisition unit 132 acquires the heat source machine energy consumption ER and In the energy consumption change amount table 113, the heat source machine operation state ID in step S103 is The energy consumption of the heat source unit before the change is recorded as "ER." The heat consumption acquisition unit 132 acquires the heat consumption amount from the energy consumption sensor 11 provided in the heat source device 10. After obtaining the heat source machine energy consumption ER, the heat source machine energy consumption change amount table 113 In step S103, the "heat source machine energy before change" is associated with the heat source machine operating state ID. - Record the consumption amount as "ER".

[0069] (S105) The operation status information acquisition unit 131 acquires pump operation status information indicating the operation status of the pump 20. The pump operation status ID is then associated with the pump operation status ID and recorded in the pump operation status table 112. In this case, the operation status information acquisition unit 131 acquires the operation status of the pump 20 from a pump control device (not shown). The number is acquired, and the number is recorded in the pump operation status table 112 in association with the pump operation status ID. The operation status information acquisition unit 131 also receives pump operation information from a pump control device (not shown). The frequency F is acquired, and the cold / hot water supply temperature TS is acquired from the supply temperature sensor 14. The pump operation status is recorded in the pump operation status table 112 in association with the pump operation status ID.

[0070] (S106) The energy consumption acquisition unit 132 acquires the pump energy consumption EP and In the energy consumption change amount table 114, the pump operation state ID in step S105 is The amount of pump energy consumption before the change is recorded as "EP." The consumption amount acquisition unit 132 acquires various parameters and then calculates the consumption amount based on the parameters. , by calculating the pump energy consumption EP This is then associated with the pump operating status ID in step 105 to calculate the pump energy consumption. The energy consumption acquisition unit 132 records the change in the energy consumption amount in the energy consumption change amount table 114 based on the following formula: The pump energy consumption EP is calculated based on the calculated values. Pump energy consumption EP [kW] = Pump rated power consumption [kW] * (Pump operating cycle Wave number [Hz] / Rated pump frequency [Hz]^3

[0071] (S107) The heat source machine control unit 133 increases the set temperature S of the heat source machine 10 by a predetermined value. is the smallest unit set in the heat source machine 10 for changing the temperature of the heat source machine 10. In this case, the minimum unit (predetermined value) is the set temperature S of the heat source device 10. Change in heat source energy consumption ER (an example of the first variable) when the value is increased and the heat source machine energy consumption when the set temperature S of the heat source machine 10 is reduced by the predetermined value. It is assumed that the change in the gy consumption ER (an example of the first variable) is small enough to be equated with the change in the gy consumption ER (an example of the first variable). Furthermore, the minimum unit (predetermined value) is the unit that increases the set temperature S of the heat source device 10 by the predetermined value. When the pump operation frequency F (an example of the second variable) is changed, the setting of the heat source device 10 is changed. When the temperature S is decreased by the predetermined value, the pump operating frequency F (an example of the second variable) ) is small enough to be equated with the change in

[0072] (S108) The energy consumption acquisition unit 132 calculates the change in the temperature when the set temperature S is increased by a predetermined value. "Energy consumption of heat source unit after conversion EUR" and "When the set temperature S is reduced by a specified value" Obtain the "post-change heat source machine energy consumption EDR" and create a heat source machine energy consumption change table. In rule 113, the heat source unit operating state ID is recorded in association with the heat source unit operating state ID in step S104. Specifically, the energy consumption acquisition unit 132 acquires the energy consumption data from an energy consumption sensor provided in the heat source device 10. After obtaining the heat source energy consumption ER from sensor 11, The amount table 113 shows the "heat source machine energy after change" when the set temperature S is increased by a predetermined value. As described above, the predetermined value in step S107 is recorded as "amount of energy consumed EUR." is the heat source machine energy consumption when the set temperature S of the heat source machine 10 is increased by the predetermined value. - The change in the consumption amount ER and the set temperature S of the heat source device 10 when the set temperature S is reduced by the predetermined value The change in the energy consumption of the heat source equipment ER (an example of the first variable) can be considered to be equivalent to the change in the energy consumption of the heat source equipment ER (an example of the first variable). Based on this, the energy consumption acquisition unit 132 determines whether the energy consumption sensor 1 The heat source machine energy consumption ER obtained from 1 is stored in the heat source machine energy consumption change amount table 1 13, "When the set temperature S is reduced by a predetermined value," "After the change, the energy consumption of the heat source machine E Record it as "DR".

[0073] (S109) The energy consumption change calculation unit 134 calculates the change in the energy consumption when the set temperature S is increased by a predetermined value. "Change in energy consumption of heat source equipment ΔEUR" and "When the set temperature S is reduced by a specified value" Calculate the "heat source machine energy consumption change amount ΔEDR" of " Specifically, the energy consumption change amount calculation unit 134 records the heat source equipment "Energy consumption amount of heat source machine before change ER" in the energy consumption change amount table 113, "When the set temperature S is increased by a specified value" "Post-change energy consumption EUR of the heat source unit" The difference between the two, that is, EUR-ER, is defined as the "change in energy consumption of the heat source equipment ΔEUR." The calculated energy consumption change amount is recorded in the heat source machine energy consumption change amount table 113. The change amount calculation unit 134 calculates the “heat consumption before change” in the heat source machine energy consumption change amount table 113. "Energy consumption of the power source ER" and "When the set temperature S is reduced by a specified value" The difference between the "heat source energy consumption EDR" and the "heat source energy consumption EDR", i.e., EDR-ER, is The energy consumption change amount ΔEDR is calculated and entered in the heat source equipment energy consumption change amount table 113. Record.

[0074] (S110) The energy consumption acquisition unit 132 calculates the change in the temperature when the set temperature S is increased by a predetermined value. "Pump energy consumption EUP after conversion" and "When the set temperature S is reduced by a specified value" "Pump energy consumption after change EDP" is acquired and the pump energy consumption change table is displayed. In rule 114, the pump operation status ID is recorded in association with the pump operation status ID in step S106. Specifically, the energy consumption acquisition unit 132 acquires the pump operation frequency F and then calculates the The "pump operating frequency after change FUP" is set as "when the set temperature S is increased by a predetermined value." Based on the following formula, the pump pressure after the change is calculated as follows: The energy consumption EUP is calculated and recorded in the pump energy consumption change table 114. do. Pump energy consumption after change EUP [kW] = Pump rated power consumption [kW] * (change Post pump operating frequency FUP [Hz] / pump rated frequency [Hz]^3

[0075] As described above, the predetermined value in step S107 is set to the set temperature S of the heat source unit 10. The amount of change in the pump operating frequency F (an example of the second variable) when the frequency is increased by a predetermined value. , the pump operation frequency when the set temperature S of the heat source device 10 is reduced by the predetermined value The change in F (an example of a second variable) is small enough to be considered equivalent. The energy consumption acquisition unit 132 determines the set temperature S based on the acquired pump operation frequency F. The "post-change pump operating frequency FDP" is calculated for the case where the pump is reduced by a fixed value. The energy consumption acquisition unit 132 calculates the temperature by "reducing the set temperature S by a predetermined value" based on the following formula: The pump energy consumption after change EDP is calculated for the case where the The change amount is recorded in the change amount table 114. Pump energy consumption after change EDP [kW] = Pump rated power consumption [kW] * (change Post pump operating frequency FDP [Hz] / pump rated frequency [Hz]^3

[0076] (S111) The energy consumption change calculation unit 134 calculates the change in the energy consumption when the set temperature S is increased by a predetermined value. "Pump energy consumption change ΔEUP" and "When the set temperature S is decreased by a specified value" Calculate the "pump energy consumption change amount ΔEDP" of " Specifically, the energy consumption change calculation unit 134 records the pump energy consumption change amount in the table 114. "Pump energy consumption amount EP before change" in the energy consumption change amount table 114, "Pump energy consumption EUP after change when set temperature S is increased by a specified value" The difference between the two, i.e., EUP-EP, is defined as the "pump energy consumption change ΔEUP." The calculated energy consumption change amount is recorded in the pump energy consumption change amount table 114. The change amount calculation unit 134 calculates the "before change" in the pump energy consumption change amount table 114. "Pump energy consumption EP" and "When the set temperature S is decreased by a specified value" The difference between the pump energy consumption EDP and the pump energy consumption EDP, i.e., EDP-EP, is The change in pump energy consumption is calculated as "ΔEDP" and entered into the pump energy consumption change table 114. Then, the process returns to step S101.

[0077] In step S101, if it is determined that the set temperature of the heat source device 10 is the maximum value ( S101; No), or in step S102, the pump 20 is in the minimum operating state. If this is determined (S102; No), the process proceeds to step S112.

[0078] (S112) The determination unit 135 determines whether the set temperature S of the heat source unit 10 is not the minimum value. 35 determines that the set temperature S of the heat source device 10 is not the minimum value (S112; Yes), The process proceeds to step S113.

[0079] (S113) The determination unit 135 determines whether the pump 20 is not in a maximum operating state. If it is determined that the pump is not in the maximum operating state (S113; Yes), the process returns to step S Go to 114.

[0080] (S114) The operating state information acquisition unit 131 acquires heat source machine operating state information indicating the operating state of the heat source machine 10. The heat source unit operation status ID is associated with the heat source unit operation status ID and recorded in the heat source unit operation status table 111. In this case, the operation status information acquisition unit 131 acquires the number of operating units of the heat source machine 10, which is a control device for the heat source machine (not shown). This is recorded in the heat source machine operation status table 111 in association with the heat source machine operation status ID. In addition, the operating state information acquisition unit 131 acquires a set temperature S from a heat source device control device (not shown). The chilled / hot water outlet temperature TO is obtained from the chilled / hot water outlet temperature sensor 12, and the chilled / hot water inlet temperature After obtaining the hot and cold water inlet temperature TI from the sensor 13, it associates it with the heat source machine operation status ID. The result is recorded in the heat source machine operating state table 111.

[0081] (S115) The energy consumption acquisition unit 132 acquires the heat source machine energy consumption ER and In the energy consumption change amount table 113, the heat source machine operation state ID in step S114 is The energy consumption of the heat source unit before the change is recorded as "ER." The heat consumption acquisition unit 132 acquires the heat consumption amount from the energy consumption sensor 11 provided in the heat source device 10. After obtaining the heat source machine energy consumption ER, the heat source machine energy consumption change amount table 113 In step S114, the "heat source machine energy before change" is associated with the heat source machine operating state ID. Record the consumption as "ER".

[0082] (S116) The operation status information acquisition unit 131 acquires pump operation status information indicating the operation status of the pump 20. The pump operation status ID is then associated with the pump operation status ID and recorded in the pump operation status table 112. In this case, the operation status information acquisition unit 131 acquires the operation status of the pump 20 from a pump control device (not shown). The number of pumps is acquired and recorded in the pump operation status table 112. The unit 131 acquires the pump operation frequency F from a pump control device (not shown), and After obtaining the cold / hot water return temperature TS from 14, these are recorded in the pump operation status table 112. Record.

[0083] (S117) The energy consumption acquisition unit 132 acquires the pump energy consumption EP and In the energy consumption change amount table 114, the pump operation state ID in step S116 is The amount of pump energy consumption before the change is recorded as "EP." The consumption amount acquisition unit 132 acquires various parameters and then calculates the consumption amount based on the parameters. , by calculating the pump energy consumption EP This is associated with the pump operating state ID of step S116, and the pump energy The energy consumption change amount is recorded in the consumption change amount table 114. The energy consumption amount acquisition unit 132 is based on the following: The pump energy consumption EP is calculated. Pump energy consumption EP [kW] = Pump rated power consumption [kW] * (Pump operating Frequency [Hz] / Rated pump frequency [Hz])^3

[0084] (S118) The heat source machine control unit 133 decreases the set temperature S of the heat source machine 10 by a predetermined value in step S107. To make.

[0085] (S119) The energy consumption acquisition unit 132 acquires the "change" of "when the set temperature S is decreased by a predetermined value." "When the set temperature S is increased by a specified value" and "When the set temperature S is increased by a specified value" Obtain "post-change energy consumption of heat source equipment EUR" and create a table of changes in energy consumption of heat source equipment. In rule 113, the information is recorded in association with the heat source unit operating state ID in step S115. Specifically, the energy consumption acquisition unit 132 acquires the energy consumption data from an energy consumption sensor provided in the heat source device 10. After obtaining the heat source energy consumption ER from sensor 11, The amount table 113 shows the "heat source machine energy after change when the set temperature S is decreased by a predetermined value" As described above, the set temperature S of the heat source device 10 is recorded as "energy consumption EDR". When the temperature is increased by a predetermined value, the change in the heat source energy consumption ER and the heat source 1 When the set temperature S of 0 is decreased by a predetermined value, the energy consumption of the heat source unit ER ( Therefore, the energy consumption acquisition unit 132 can be considered to be the same as the change in the energy consumption (an example of a variable). The heat source machine energy consumption ER obtained from the energy consumption sensor 11 is The energy consumption change amount table 113 shows the change amount when the set temperature S is increased by a predetermined value. Record this as "post-heat source energy consumption EUR".

[0086] (S120) The energy consumption change calculation unit 134 calculates the change in the energy consumption when the set temperature S is reduced by a predetermined value. "Change in energy consumption of heat source equipment ΔEDR" and "When the set temperature S is increased by a specified value Calculate the "heat source equipment energy consumption change amount ΔEUR" of " Specifically, the energy consumption change amount calculation unit 134 records the heat source equipment "Energy consumption amount of heat source machine before change ER" in the energy consumption change amount table 113, "When the set temperature S is decreased by a specified value" "Post-change heat source energy consumption EDR" The difference between this and the actual energy consumption change rate, i.e., EDR-ER, is defined as the "change in energy consumption of the heat source equipment ΔEDR." The calculated energy consumption change amount is recorded in the heat source machine energy consumption change amount table 113. The change amount calculation unit 134 calculates the “heat consumption before change” in the heat source machine energy consumption change amount table 113. "Energy consumption of the power source ER" and "When the set temperature S is increased by a specified value" The difference between the "energy consumption of heat source equipment EUR" and the "energy consumption of heat source equipment EUR", i.e., EUR-ER, is The change in energy consumption of the heat source equipment is calculated as "ΔEUR" and entered into the heat source equipment energy consumption change table 113. Record.

[0087] (S121) The energy consumption acquisition unit 132 acquires the "change" of "when the set temperature S is decreased by a predetermined value." "Pump energy consumption EDP after conversion" and "When the set temperature S is increased by a specified value" "Pump energy consumption after change EUP" is acquired and the pump energy consumption change table is displayed. In rule 114, the pump operation status ID is recorded in association with the pump operation status ID in step S117. Specifically, the energy consumption acquisition unit 132 acquires the pump operation frequency F and then calculates the is the "pump operating frequency after change FDP" when the set temperature S is decreased by a predetermined value. Based on the following formula, the pump pressure after the change is calculated as follows: The energy consumption EDP is calculated and recorded in the pump energy consumption change table 114. do. Pump energy consumption after change EDP [kW] = Pump rated power consumption [kW] * (change Post pump operating frequency FDP [Hz] / pump rated frequency [Hz])3

[0088] As described above, the predetermined value in step S107 is set to the set temperature S of the heat source unit 10. The amount of change in the pump operating frequency F (an example of the second variable) when the frequency is increased by a predetermined value. , the pump operation frequency when the set temperature S of the heat source device 10 is reduced by the predetermined value The change in F (an example of a second variable) is small enough to be considered equivalent. The energy consumption acquisition unit 132 determines the set temperature S based on the acquired pump operation frequency F. Calculate the "pump operating frequency after change FUP" when the "pump operating frequency after change FUP" is increased by a fixed value. The energy consumption acquisition unit 132 calculates the temperature by "increasing the set temperature S by a predetermined value" based on the following formula: Calculate the "changed pump energy consumption EUP" for "when the pump is The change amount is recorded in the change amount table 114. Pump energy consumption after change EUP [kW] = Pump rated power consumption [kW] * (change Post pump operating frequency FUP [Hz] / pump rated frequency [Hz])3

[0089] (S122) The energy consumption change calculation unit 134 calculates the change in the energy consumption when the set temperature S is reduced by a predetermined value. "Pump energy consumption change ΔEDP" and "When the set temperature S is increased by a predetermined value" Calculate the "pump energy consumption change amount ΔEUP" of " Specifically, the energy consumption change calculation unit 134 records the pump energy consumption change amount in the table 114. "Pump energy consumption amount EP before change" in the energy consumption change amount table 114, "Pump energy consumption EDP after change when set temperature S is decreased by a specified value" The difference between the two, that is, EDP-EP, is defined as the "pump energy consumption change ΔEDP." The calculated energy consumption change amount is recorded in the pump energy consumption change amount table 114. The change amount calculation unit 134 calculates the "before change" in the pump energy consumption change amount table 114. "Pump energy consumption EP" and "When the set temperature S is increased by a certain value" The difference between the pump energy consumption EUP and the pump energy consumption EUP, i.e., EUP-EP, is The change in pump energy consumption is calculated as "ΔEUP" and added to the pump energy consumption change table 114. Then, the process returns to step S112.

[0090] In step S112, if it is determined that the set temperature S of the heat source machine is the minimum value (S 112; No), or in step S113, it is determined that the pump 20 is in a maximum operating state. If it is determined that the setting is correct (S113; No), the processing ends.

[0091] As described above, the control device 100 according to this embodiment controls the heat source device provided in the hot and cold water system 1. By actually increasing / decreasing the set temperature S of the heat source machine 10 and the pump 20, Change each operating state and acquire and record the change in energy consumption before and after the change. Therefore, the system configuration, installation environment, operating status, etc. of the hot and cold water system 1 will be recorded. The energy calculation is based on various parameters and takes into account the actual behavior of the heat source machine 10 and the pump 20. It is now possible to acquire and record changes in gye consumption.

[0092] FIG. 8 shows the operation balance control performed by the operation balance control unit 140 of the control device 100 according to the embodiment. 1 is an operational flow diagram showing an example of an operational process related to the hot and cold water system control. System 1 is the energy cost of the hot and cold water system 1, whose domain is the set temperature S of the heat source unit 10. Assume that the graph of is constructed to be a downward convex function.

[0093] (S201) The operating state determination unit 141 determines the current operating state of the heat source unit 10. Specifically, The operation state determination unit 141 receives the number of operating heat source machines and the set temperature from a heat source machine control device (not shown). S, obtains the chilled / hot water outlet temperature TO from the chilled / hot water outlet temperature sensor 12, and obtains the chilled / hot water inlet temperature After acquiring the hot and cold water inlet temperature TI from the temperature sensor 13, the heat source machine operation state table 111 is Refer to the acquired parameters (set temperature S, cold / hot water outlet temperature TO, cold / hot water inlet temperature TI ) and determine the operating status of the heat source equipment corresponding to it.

[0094] (S202) The operation state determination unit 141 determines the current pump operation state of the pump 20. Specifically, The operation state determination unit 141 receives the number of pumps in operation and the pump operation status from a pump control device (not shown). The pump operation frequency F is acquired, and the cold / hot water supply temperature TS is acquired from the supply temperature sensor 14. The operation status table 112 is referred to, and the acquired parameters (number of pumps in operation, pump operating period, etc.) are Determine the pump operating status corresponding to the wave number F and the cold / hot water supply temperature TS.

[0095] (S203) The energy cost change calculation unit 142 increases the set temperature S of the heat source unit 10 by a predetermined value. The change in the energy cost of the heat source machine ΔCUR when the temperature is increased and the set temperature S of the heat source machine 10 are Calculate the change in heat source energy cost ΔCDR when the cost is reduced by a specified value Specifically, the energy cost change calculation unit 142 calculates the heat source machine energy consumption change amount table. The "heat source machine operation status" corresponding to the heat source machine operation status determined in step S201 is output from the cable 113. "When the set temperature S is increased by a predetermined value," the "change in energy consumption of the heat source machine ΔEUR" is After obtaining this, it is multiplied by the cost unit of the energy source of the heat source machine 10. The value is the heat source machine energy consumption when the set temperature S of the heat source machine 10 is increased by a predetermined value. The cost change amount ΔCUR is calculated as the energy cost change amount. The heat source machine operation amount determined in step S201 is calculated from the heat source machine energy consumption change amount table 113. The "heat source energy consumption when the set temperature S of the heat source is reduced by a predetermined value" corresponding to the operating state After obtaining the energy consumption change amount ΔEDR, the cost unit of the energy source of the heat source machine 10 is calculated. The value obtained by multiplying the value is calculated by decreasing the set temperature S of the heat source device 10 by a predetermined value. In this case, the change in energy costs for the heat source equipment is calculated as ΔCDR.

[0096] (S204) The energy cost change calculation unit 142 increases the set temperature S of the heat source unit 10 by a predetermined value. The change in pump energy cost ΔCUP when the temperature is increased and the set temperature S of the heat source unit 10 are Calculate the pump energy cost change amount ΔCDP when the pump energy cost is reduced by a predetermined value. Specifically, the energy cost change calculation unit 142 calculates the pump energy consumption change amount. The "heat source machine" corresponding to the pump operation state determined in step S202 is output from the cable 114. When the set temperature S is increased by a predetermined value, the pump energy consumption change amount ΔEUP is calculated. Then, multiply this by the unit cost of the energy source of the pump 20. The value is the pump energy when the set temperature S of the heat source device 10 is increased by a predetermined value. The cost change amount ΔCUP is calculated as the energy cost change amount. The pump energy consumption change amount table 114 is used to determine the pump energy consumption change amount determined in step S202. The pump energy consumption when the set temperature S of the heat source machine is reduced by a predetermined value corresponds to the operating state. The cost of the energy source for the pump 20 is calculated by adding the "change in energy consumption ΔEDP" to the The value obtained by multiplying the unit price is calculated by decreasing the set temperature S of the heat source device 10 by a predetermined value. The pump energy cost change amount in this case is calculated as ΔCDP.

[0097] (S205) The energy cost change calculation unit 142 increases the set temperature S of the heat source unit 10 by a predetermined value. The change in the energy cost of the hot and cold water system 1 when The change amount ΔCUS and the amount of hot and cold water when the set temperature S of the heat source machine 10 is reduced by a predetermined value Calculate the change in energy cost ΔCDS, which is the change in energy cost for System 1. Specifically, the energy cost change amount calculation unit 142 calculates the heat source machine energy cost change amount. The sum of the change in pump energy cost ΔCUR and the change in pump energy cost ΔCUP (ΔCUR + ΔCUP) The energy consumption of the hot and cold water system 1 when the set temperature S of the heat source device 10 is increased by a predetermined value is The energy cost change amount ΔCUS is calculated as the energy cost change amount ΔCUS. 42 is the change in heat source energy cost ΔCDR and the change in pump energy cost ΔC The sum of DP (ΔCDR + ΔCDP) is calculated by decreasing the set temperature S of the heat source unit 10 by a predetermined value. The change in energy cost of the chilled / hot water system 1 in this case is calculated as ΔCDS.

[0098] (S206) The heat source machine control unit 143 is configured to: The energy cost change amount ΔCUS of the hot and cold water system 1 and the set temperature S of the heat source unit 10 are The change in energy cost ΔCDS of the chilled / hot water system 1 when the value is reduced by Compare each with zero. Energy cost change amount ΔCUS and energy cost change amount If both ΔCDS are greater than zero (ΔCUS>0 and ΔCDS>0), The process returns to step S201.

[0099] (S207) The energy consumption of the hot and cold water system 1 when the set temperature S of the heat source device 10 is increased by a predetermined value If the energy cost change amount ΔCUS is smaller than zero (ΔCUS<0), the determination unit 144 It is determined whether the set temperature S of the heat source device 10 is not the maximum value or whether the pump 20 is in the minimum operating state. If the determination result in step S207 is negative (S207; No) (heat source unit 1), If the set temperature S of 0 is at its maximum value or the pump 20 is at its minimum operating state, the process is Return to step S201.

[0100] (S208) If the determination result of step S207 is affirmative (S207; Yes) (the heat source unit 10 When the set temperature is not the maximum value and the pump 20 is not in the minimum operating state, the heat source machine control unit 143 increases the set temperature of the heat source unit 10 by a predetermined value. After step S208, the process returns to step S201. return.

[0101] (S209) The energy consumption of the hot and cold water system 1 when the set temperature S of the heat source device 10 is reduced by a predetermined value If the energy cost change amount ΔCDS is smaller than zero (ΔCDS<0), the determination unit 144 Check whether the set temperature S of the heat source device 10 is not the minimum value or whether the pump 20 is in the maximum operating state. If the determination result in step S209 is negative (S209; No) (heat source (When the set temperature S of the machine 10 is at the minimum value or the pump 20 is operating at maximum capacity), The process returns to step S201.

[0102] (S210) If the determination result in step S209 is affirmative (S209; Yes) (heat source unit 10 the set temperature is not the minimum value and the pump 20 is not in the maximum operating state), the heat source machine control unit 1 43 decreases the set temperature of the heat source device 10 by a predetermined value. After step S210, the process returns to step S201. do.

[0103] As described above, in the hot and cold water system 1 according to this embodiment, the set temperature S of the heat source unit 10 is set to a predetermined value. The change in the energy cost of the hot and cold water system 1 when the fixed value is increased by When the energy cost change amount ΔCUS and the set temperature S of the heat source device 10 decrease by a predetermined value, The change in energy cost for the hot and cold water system 1 is the amount of change in energy cost ΔCD. Based on S, the energy cost of the hot and cold water system 1 will be reduced overall. The set temperature of the water heater 10 is continuously adjusted, so the energy cost of the water heater 1 is continuously reduced. This makes it possible to reduce the noise.

[0104] The above-described embodiments are intended to facilitate understanding of the present invention and are not intended to limit the present invention. The elements of the embodiment and their arrangement, materials, conditions, etc. The shape and size are not limited to those shown in the examples and can be changed as needed. In addition, the configurations shown in different embodiments may be partially substituted or combined with each other. It is Noh. [Explanation of symbols]

[0105] 1... Chilled / hot water system, 10... Heat source machine, 11... Energy consumption sensor, 12... Chilled / hot water outlet Inlet temperature sensor, 13... cold / hot water inlet temperature sensor, 14... forward temperature sensor, 20... pump, 21 ...primary pump, 22...secondary pump, 23...bypass valve, 24a...forward primary header, and 24b ...Outgoing secondary header, 25...Return header, 26...Bypass pipe, 27...Bypass valve, 30...Air conditioning 31...flow control valve, 100...control device, 110...storage unit, 111...heat source machine operating status Table 112: Pump operation status table; 113: Heat source energy consumption change table 114... pump energy consumption change amount table, 120... processing unit, 130... table a rule generating unit, 131... an operating state information acquiring unit, 132... an energy consumption acquiring unit, 133... a heat Power source control unit, 134... energy consumption change amount calculation unit, 140... operating state determination unit, 142... Energy cost change calculation unit, 143... heat source machine control unit, 144... determination unit

Claims

1. A heat source machine for adding heat to a heat medium, and heat consumption equipment for exchanging heat between the heat medium and a load. and transporting the heat medium so that the heat medium circulates between the heat source machine and the heat consuming equipment. A control device for controlling a heat medium system including a heat transfer facility, The set temperature of the heat source device is changed by a predetermined value, and the first table and the second table are A table creation unit that creates a rule, The first table contains the temperature setting of the heat source unit when the set temperature is increased by the predetermined value. a first heat source unit energy consumption change amount, which is a change amount of the energy consumption of the heat source unit; The amount of energy consumed by the heat source machine when the set temperature of the heat source machine is decreased by the predetermined value. The second heat source unit energy consumption change amount, which is the change amount of the second heat source unit, is associated with each operating state of the heat source unit. This is a table recorded by The second table contains the temperature setting of the heat source unit when the set temperature is increased by the predetermined value. a first heat transport facility energy consumption change amount, which is a change amount of the energy consumption amount of the heat transport facility; and the energy consumption of the heat transport equipment when the set temperature of the heat source machine is reduced by the predetermined value. a second heat transport facility energy consumption change amount, which is a change amount of the heat transport facility energy consumption; This is a table in which the operation statuses are recorded in association with each other. A table creation unit; The first heat source machine element associated with the current operating state of the heat source machine in the first table The amount of change in energy consumption and the amount of change in energy consumption of the second heat source unit, and A first heat transport facility energy consumption change amount associated with the current operating state of the heat transport facility an energy consumption change amount acquisition unit that acquires the energy consumption change amount of the first heat transport equipment and the energy consumption change amount of the second heat transport equipment; The acquired first heat source unit energy consumption change amount and first heat transport equipment energy consumption change amount Based on this, the heat medium when the set temperature of the heat source machine is increased by the predetermined value The first energy cost change amount, which is the change amount of the energy cost of the body system, is calculated and Based on the obtained second heat source unit energy consumption change amount and second heat transport equipment energy consumption change amount, Based on this, the heat medium system when the set temperature of the heat source machine is reduced by the predetermined value Calculate the second energy cost change amount, which is the change amount of the energy cost of the system. an energy cost change calculation unit; Based on the first energy cost change amount and the second energy cost change amount, The set temperature of the heat source device is controlled so that the energy cost of the heat medium system is reduced. a heat source machine control unit; A control device comprising:

2. The predetermined value is the minimum value set in the heat source machine for changing the temperature of the heat source machine. The control device of claim 1 , wherein the control device is a unit.

3. The predetermined value is the value obtained when the set temperature of the heat source machine is increased by the predetermined value. The change amount of the first variable that specifies the energy consumption of the heat source machine and the set temperature of the heat source machine are The change in the first variable when the first variable is decreased by a predetermined value is small enough to be equated with the change in the second variable. The control device according to claim 1.

4. The first variable is the energy consumption of the heat source machine or the operating frequency of the heat source machine. The control device according to claim 3 .

5. The predetermined value is the value obtained when the set temperature of the heat source machine is increased by the predetermined value. The change in the second variable that defines the energy consumption of the heat transport equipment and the set temperature of the heat source machine are The degree to which the change in the second variable can be regarded as the same as the change in the second variable when the second variable is decreased by the predetermined value.

4. The control device of claim 3, wherein the control device is as small as

6. The control device according to claim 5 , wherein the second variable is an operating frequency of the heat transfer equipment.

7. The table creation unit creates the first table by using the set temperature of the heat source machine in advance. The second heat source unit is operated based on the first variable obtained by increasing the first variable by the predetermined value. Calculating the amount of change in energy consumption or decreasing the set temperature of the heat source machine by the predetermined value. and calculating the amount of change in energy consumption of the first heat source machine based on the first variable acquired by The control device according to claim 5 .

8. The table creation unit creates the second table by using the set temperature of the heat source machine in advance. The second heat transfer setting is performed based on the second variable obtained by increasing the second variable by the predetermined value. Calculate the amount of change in the energy consumption of the heat source equipment, or reduce the set temperature of the heat source equipment by the predetermined value. The first heat transport equipment energy consumption variable is calculated based on the second variable obtained by The control device according to claim 5 , further comprising: a control circuit for controlling a power supply voltage;

9. The heat medium system is an element of the heat medium system whose domain is the set temperature of the heat source machine. The graph of energy cost is constructed to be a downward convex function, When the first energy cost change amount is a negative value, the heat source machine control unit The set temperature of the power source is increased by the predetermined value, and the second energy cost change amount is a negative value.

2. The control method according to claim 1, wherein, in a certain case, the set temperature of the heat source unit is decreased by the predetermined value. Device.

10. The heat source machine control unit is configured to: If the amounts of change are all positive values, the set temperature of the heat source machine is maintained. The control device.

11. A heat source machine for adding heat to a heat medium, and heat consumption equipment for exchanging heat between the heat medium and a load. and transporting the heat medium so that the heat medium circulates between the heat source machine and the heat consuming equipment. A control method for controlling a heat medium system including a heat transfer facility, The set temperature of the heat source device is changed by a predetermined value, and the first table and the second table are A table creation step for creating a table, The first table contains the temperature setting of the heat source unit when the set temperature is increased by the predetermined value. a first heat source unit energy consumption change amount, which is a change amount of the energy consumption of the heat source unit; The amount of energy consumed by the heat source machine when the set temperature of the heat source machine is decreased by the predetermined value. The second heat source unit energy consumption change amount, which is the change amount of the second heat source unit, is associated with each operating state of the heat source unit. This is a table recorded by The second table contains the temperature setting of the heat source unit when the set temperature is increased by the predetermined value. a first heat transport facility energy consumption change amount, which is a change amount of the energy consumption amount of the heat transport facility; and the energy consumption of the heat transport equipment when the set temperature of the heat source machine is reduced by the predetermined value. a second heat transport equipment energy consumption change amount, which is a change amount of energy consumption of the heat transport equipment; A table in which the statuses are recorded in association with each other. The table creation step, The first heat source machine element associated with the current operating state of the heat source machine in the first table A change in energy consumption and a change in energy consumption of the second heat source unit, The first heat transfer information associated with the current operating state of the heat transfer equipment in the second table The energy consumption change amount of the heat transfer equipment and the energy consumption change amount of the second heat transfer equipment are acquired. an energy consumption change amount acquisition step; The acquired first heat source unit energy consumption change amount and first heat transport equipment energy consumption change amount When the set temperature of the heat source machine is increased by the predetermined value, Calculating a first energy cost change amount that is a change amount in the energy cost of the media system; The acquired second heat source unit energy consumption change amount and second heat transport equipment energy consumption change amount Based on this, when the set temperature of the heat source machine is reduced by the predetermined value, Calculating a second energy cost change amount, which is a change amount of the energy cost of the body system; an energy cost change calculation step; Based on the first energy cost change amount and the second energy cost change amount, The set temperature of the heat source device is controlled so that the energy cost of the heat medium system is reduced. a heat source machine control step; A control method comprising:

12. A heat source machine for adding heat to a heat medium, and heat consumption equipment for exchanging heat between the heat medium and a load. and transporting the heat medium so that the heat medium circulates between the heat source machine and the heat consuming equipment. a heat transfer facility for transferring heat from the heating medium to the heating medium; and a computer for controlling the heat transfer facility for transferring heat from the heating medium to the heating medium. The set temperature of the heat source device is changed by a predetermined value, and the first table and the second table are A table creation unit that creates a rule, The first table contains the temperature setting of the heat source unit when the set temperature is increased by the predetermined value. a first heat source unit energy consumption change amount, which is a change amount of the energy consumption of the heat source unit; The amount of energy consumed by the heat source machine when the set temperature of the heat source machine is decreased by the predetermined value. The second heat source unit energy consumption change amount, which is the change amount of the second heat source unit, is associated with each operating state of the heat source unit. This is a table recorded by The second table contains the temperature setting of the heat source unit when the set temperature is increased by the predetermined value. a first heat transport facility energy consumption change amount, which is a change amount of the energy consumption amount of the heat transport facility; and the energy consumption of the heat transport equipment when the set temperature of the heat source machine is reduced by the predetermined value. a second heat transport equipment energy consumption change amount, which is a change amount of energy consumption of the heat transport equipment; A table in which the statuses are recorded in association with each other. A table creation unit; The first heat source machine element associated with the current operating state of the heat source machine in the first table The amount of change in energy consumption and the amount of change in energy consumption of the second heat source unit, and A first heat transport facility energy consumption change amount associated with the current operating state of the heat transport facility and an energy consumption change amount acquisition unit that acquires the second heat transport equipment energy consumption change amount. 、 The acquired first heat source unit energy consumption change amount and first heat transport equipment energy consumption change amount Based on When the set temperature of the heat source machine is increased by the predetermined value, The first energy cost change amount, which is the change amount of the energy cost of the system, is calculated, and the obtained Based on the second heat source device energy consumption change amount and the second heat transport equipment energy consumption change amount, When the set temperature of the heat source machine is decreased by the predetermined value, A second energy cost change amount is calculated, which is the change amount of the energy cost of the energy system. a cost change calculation unit; Based on the first energy cost change amount and the second energy cost change amount, The set temperature of the heat source device is controlled so that the energy cost of the heat medium system is reduced. a heat source machine control unit; A program to function as a

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