Temperature control system and temperature control method

Abstract

To suppress fluctuations in supply temperature due to defrost operation of a heat pump chiller. [Solution] The temperature adjustment system comprises a flow path through which a heat medium circulates, at least one heat pump chiller provided in the flow path, a heat source provided in the flow path, and a control device that controls the operation of the heat pump chiller and the heat source. The control device comprises an acquisition unit that acquires weather forecast data, a generation unit that uses the weather forecast data to generate an operation schedule for the heat pump chiller, predicts an implementation schedule for defrosting operation to remove frost from the heat pump chiller based on the generated operation schedule, and adds to the operation schedule a schedule for compensating operation of the heat source to suppress fluctuations in the supply temperature in the flow path due to defrosting operation based on the predicted implementation schedule, and a control unit that controls the operation of the heat pump chiller and the heat source based on the operation schedule.

Description

[Technical Field]

[0001] The present invention relates to a temperature adjustment system and a temperature adjustment method. [Background technology]

[0002] There is a heat supply system that supplies a heat medium heated by a heat pump chiller. For example, Patent Document 1 discloses such a heat supply system. Heat pump chillers can become frosty and require defrosting operation to remove the frost. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-027784 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the heat pump chiller's heat supply capacity decreases while it is performing defrost operation. This causes the supply temperature of the heat supply system to temporarily fluctuate. To suppress this fluctuation, the heat supply system can adjust the supply temperature using a heat source. The heat source can be, for example, an unused heat pump chiller or another heat source such as a boiler. However, the heat source requires a start-up time from startup until it begins to stably supply heat. As a result, the heat supply system takes time to begin suppressing the fluctuation, and the supply temperature fluctuates during this start-up time.

[0005] Therefore, an object of the present invention is to suppress fluctuations in supply temperature due to defrost operation of a heat pump chiller. [Means for solving the problem]

[0006] In order to solve the above problem, a temperature adjustment system according to one embodiment of the present invention comprises: a flow path through which a heat transfer medium circulates; At least one heat pump chiller provided in the flow path; a heat source provided in the flow path; a control device that controls the operation of the heat pump chiller and the heat source; Equipped with The control device an acquisition unit that acquires weather forecast data; generating an operation schedule for the heat pump chiller using the weather forecast data; predicting an implementation schedule of a defrosting operation for removing frost from the heat pump chiller based on the generated operation schedule; a schedule of a compensation operation for suppressing fluctuations in the supply temperature in the flow path due to the defrosting operation of the heat source based on the predicted implementation schedule; a schedule for starting up the heat source or increasing its output before the defrosting operation; Adding the above to the operation schedule; a generation unit; a control unit that controls operations of the heat pump chiller and the heat source based on the operation schedule; Equipped with. [Effects of the Invention]

[0007] The present invention can suppress fluctuations in supply temperature due to defrosting operation of a heat pump chiller. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a block diagram showing an example of the configuration of a heat supply system according to an embodiment of the present disclosure (hereinafter referred to as "this embodiment"). [Figure 2] FIG. 2 is a flowchart showing an example of processing by the processor of the control device according to this embodiment. [Figure 3] FIG. 3 is a flowchart showing an example of processing by the processor of the control device according to this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Specific dimensions, materials, numerical values, etc. shown in the embodiments are merely examples for facilitating understanding of the invention and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same functions and configurations are designated by the same reference numerals to avoid redundant explanation, and elements not directly related to the present invention are not shown.

[0010] [composition] FIG. 1 is a block diagram showing an example of the configuration of a heat supply system 1 according to an embodiment of the present disclosure (hereinafter referred to as "this embodiment"). The heat supply system 1 is, for example, a system that provides district heating and cooling. The heat supply system 1 is, for example, a system that supplies hot water to each consumer. The heat supply system 1 includes, for example, a control device 100, a heat source device 200, a compensation heat source 300, a supply pipe 400, and a return pipe 500. Note that the heat supply system 1 may include only some of these. Also, FIG. 1 illustrates only one each of the control device 100, the heat source device 200, the compensation heat source 300, the supply pipe 400, and the return pipe 500. However, there may be multiple each of the control device 100, the heat source device 200, the compensation heat source 300, the supply pipe 400, and the return pipe 500. Note that the heat supply system 1 is an example of a "temperature adjustment system" of the present disclosure.

[0011] The control device 100 is a device that controls the heat supply system 1. The control device 100 is a device that controls the heat source device 200 and the compensation heat source 300. The control device 100 includes, as an example, a processor 110, a ROM (read-only memory) 120, a RAM (random-access memory) 130, an auxiliary storage device 140, a communication interface 150, and a control interface 160. A bus 170 and the like connect these components. The control device 100 is an example of a "control device that controls the operation of a heat pump chiller and a heat source."

[0012] The processor 110 is the central part of a computer that performs calculations, control, and other processes necessary for the operation of the control device 100. The processor 110 is a circuit that performs various calculations and processes. The processor 110 may be, for example, a central processing unit (CPU), a microprocessing unit (MPU), a system on a chip (SoC), a digital signal processor (DSP), a graphics processing unit (GPU), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a field-programmable gate array (FPGA). Alternatively, the processor 110 may be a combination of several of these. The processor 110 may also be a combination of these with a hardware accelerator or the like. The processor 110 controls each component to realize various functions of the control device 100 based on programs such as firmware, system software, and application software stored in the ROM 120 or the auxiliary storage device 140. The processor 110 also executes the processes described below based on the programs. Note that some or all of the programs may be incorporated into the circuitry of the processor 110.

[0013] ROM 120 and RAM 130 are the main storage devices of the computer centered around processor 110. ROM 120 is a non-volatile memory used exclusively for reading data. ROM 120 stores, for example, firmware among the above programs. ROM 120 also stores data used by processor 110 when performing various processes.

[0014] The RAM 130 is a memory used for reading and writing data. The RAM 130 is used as a work area for storing data that is temporarily used when the processor 110 performs various processes. The RAM 130 is typically a volatile memory.

[0015] The auxiliary storage device 140 is an auxiliary storage device of a computer centered around the processor 110. The auxiliary storage device 140 is, for example, an EEPROM (electric erasable programmable read-only memory), an HDD (hard disk drive), or flash memory. The auxiliary storage device 140 stores, for example, system software and application software among the above programs. The auxiliary storage device 140 also stores data used by the processor 110 when performing various processes, data generated by the processes of the processor 110, various setting values, and the like.

[0016] The communication interface 150 is an interface through which the control device 100 communicates via a network NW or the like. The control device 100 connects to the network NW via the communication interface 150. The network NW is typically a communication network including the Internet. The network NW may be a communication network including a private network such as an intranet. The network NW may be a communication network including a LAN (local area network).

[0017] The control interface 160 is an interface through which the control device 100 communicates with each device of the heat supply system 1. The control device 100 controls the heat source device 200 and the compensation heat source 300 via the control interface 160.

[0018] The bus 170 includes a control bus, an address bus, a data bus, etc., and transmits signals exchanged among the various parts of the control device 100 .

[0019] The heat source device 200 is a heat source device that produces hot water and supplies it to the supply pipe 400. The heat source device 200 produces hot water by heating water supplied from the return pipe 500 or the like using a heat pump chiller. The heat pump chiller is, for example, a heat pump chiller that uses at least one of an air-cooled type and a water-cooled type cooling method. The heat source device 200 is composed of, for example, one or more modules 210.

[0020] The module 210 is a heat pump chiller. Therefore, the heat source device 200 is a heat source device made up of a plurality of heat pump chiller modules. The module 210 is made up of one or a plurality of refrigerant circuits 211. The module 210 shown in FIG. 1 includes, for example, four refrigerant circuits 211.

[0021] Each module 210 is capable of defrosting operation. The defrosting operation is an operation mode in which frost adhering to the module 210 is removed. During normal operation, the module 210 operates, for example, all of the refrigerant circuits 211 in heating operation. During defrosting operation, the module 210 operates, for example, one of the refrigerant circuits 211 in cooling operation and the remaining refrigerant circuits 211 in heating operation. The refrigerant circuits 211 generate heat by operating in cooling operation. This allows the refrigerant circuits 211 to remove frost adhering to the refrigerant circuits 211.

[0022] The compensation heat source 300 is a heat source device other than the heat source device 200. The compensation heat source 300 is a device that produces hot water and supplies it to the supply pipe 400. The compensation heat source 300 may include, for example, a boiler, an electric heater, an absorption chiller / heater, or a cogeneration system.

[0023] The heat supply system 1 can perform a compensating operation using at least one of the module 210 and the compensation heat source 300. The compensating operation is an operation that compensates for the heat shortage caused by the defrosting operation of the heat source device 200 and suppresses fluctuations in the supply temperature. The supply temperature is the temperature of the water supplied to the supply pipe 400. Note that the compensation heat source 300 may also be capable of supplying heat for purposes other than the compensating operation.

[0024] The supply pipe 400 is a pipe that supplies hot water produced by at least one of the heat source device 200 and the compensation heat source 300 to each consumer.

[0025] The return pipe 500 is a pipe for receiving water returned from each consumer facility and returning it to at least one of the heat source device 200 and the compensation heat source 300.

[0026] The supply pipe 400 and the return pipe 500 are an example of a "flow path through which the heat medium circulates."

[0027] [Operation] The operation of the heat supply system 1 according to the embodiment will be described below with reference to Figures 2 and 3. Note that the processing content in the following operation description is an example, and various processing that can obtain similar results can be used as appropriate. Figures 2 and 3 are flowcharts showing an example of processing by the processor 110 of the control device 100. The processor 110 executes the processing of Figures 2 and 3 based on a program stored in, for example, the ROM 120 or the auxiliary storage device 140.

[0028] 2 at a predetermined timing, for example. The predetermined timing may be a predetermined time every day.

[0029] In step S11 of Fig. 2, the processor 110 of the control device 100 determines the target period for which a schedule is to be created. As an example, the target period is from a predetermined time on the day of or the day after the predetermined timing described above up to 24 hours later. The processor 110 also determines the time resolution Δt of the schedule to be created. As an example, the time resolution Δt is 30 minutes.

[0030] In step S12, processor 110 acquires weather forecast data for the target period from a server or the like via network NW. The server may be, for example, a server that provides a service that provides weather forecast data. The acquired weather forecast data may include, for example, temperature, relative humidity, weather, wind speed, and a discomfort index. Processor 110 may calculate the discomfort index from the temperature and relative humidity without acquiring it from the server.

[0031] As described above, by performing the process of step S12, processor 110 functions as an example of an "acquisition unit that acquires weather forecast data." Alternatively, by performing the process of step S12 in cooperation with communication interface 150, processor 110 functions as an example of an acquisition unit.

[0032] In step S13, the processor 110 predicts the hot water load Q1 for the target period. The hot water load Q1 is the amount of heat required to heat water returned from the consumer and return it from the return temperature to a predetermined supply water temperature. In other words, the hot water load Q1 is the amount of heat that the heat supply system 1 needs to supply per unit time. The processor 110 inputs, for example, the weather forecast data acquired in step S12 into a mathematical model (hereinafter referred to as the "load prediction model") created in advance. The processor 110 then obtains the hot water load Q1 as the output of the load prediction model. The load prediction model is, for example, a mathematical model using a Kalman filter. Alternatively, the load prediction model may be a mathematical model using regression analysis, a machine learning model, or other techniques. The load prediction model is, for example, expressed by the following equation. The hot water load Q1(i) is the hot water load from a certain time i to Δt later. Hot water load Q1(i) = variable A(i) × discomfort index D(i) + variable B(i) (1)

[0033] Here, variable A and variable B may have values ​​that differ depending on the calendar. Note that "varying depending on the calendar" means, for example, depending on the season, month, time of year, whether it is a weekday or a holiday, etc.

[0034] The processor 110 creates a load prediction model using, for example, past performance data. The performance data includes, for example, the past hot water load and discomfort index of the heat supply system 1.

[0035] The hot water load Q1 is an example of "amount of heat required to raise the temperature of the heat medium, whose temperature has been reduced by circulating through the flow path, to a predetermined temperature." Therefore, the process of step S13 is an example of "predicting the hot water load using weather forecast data."

[0036] In step S14, the processor 110 creates an operation schedule for each heat source using the hot water load Q1 predicted in step S13. The heat sources include, for example, the modules 210 of the heat source device 200 and the compensation heat source 300. The operation schedule includes a schedule of the operation state of each heat source for each time resolution Δt. The operation state includes information indicating whether the device is running or not, and the magnitude of the heat supply output.

[0037] The processor 110 creates an operation schedule so as to be able to supply the amount of heat indicated by the hot water load Q1. The processor 110 determines the required number of modules 210, for example, according to the hot water load Q1. For example, assume that the maximum output of one module 210 is Q2 [kW]. In this case, the processor 110 determines to use N modules 210 when the hot water load Q1 is equal to or greater than (N-1)Q2 and less than N·Q2, where N is an integer equal to or greater than 1.

[0038] As described above, by performing the processes of steps S13 and S14, processor 110 functions as an example of a "generation unit that generates an operation schedule for a heat pump chiller using weather forecast data." The process of step S14 is also an example of a process of "generating an operation schedule for a heat pump chiller using a hot water load."

[0039] In step S15, processor 110 uses the operation schedule created in step S14 and the weather forecast data acquired in step S12 to calculate estimated values ​​of each parameter for each time resolution Δt of each module 210. Examples of the parameters include the operation duration, the total amount of heat produced, the intake air temperature and humidity, and the internal refrigerant temperature.

[0040] The operation duration is the length of time that the module 210 continues to operate continuously. The processor 110 calculates the operation duration based on the operation schedule.

[0041] The total amount of heat produced is the total amount of heat produced by the modules 210. The processor 110 calculates the total amount of heat produced based on the operation schedule.

[0042] The intake temperature and humidity are the temperature and humidity of the air taken in from the outside and exchanged with heat by the module 210. The processor 110 calculates the intake temperature and humidity from weather forecast data (temperature, relative humidity, wind speed, etc.).

[0043] The internal refrigerant temperature is the temperature of the refrigerant circulating inside the module 210. The processor 110 calculates the internal refrigerant temperature from the operation duration, the total amount of heat produced, the intake air temperature and humidity, and the like.

[0044] In step S16, the processor 110 predicts the start time of the defrost operation of each module 210 using the parameters calculated in step S15. The processor 110 inputs the parameters into a mathematical model (hereinafter referred to as a "defrost prediction model") created in advance. The processor 110 then obtains the start time of the defrost operation as an output of the defrost prediction model. The processor 110 creates the defrost prediction model using, for example, past performance data. The performance data includes, for example, the start time of the past defrost operation of the module 210 and each parameter.

[0045] The start time of the defrost operation is an example of a “defrost operation implementation schedule.” Therefore, by performing the processing of step S16, processor 110 functions as an example of a “generation unit that predicts an implementation schedule of the defrost operation for removing frost from the heat pump chiller, based on the generated operation schedule.”

[0046] In step S17, the processor 110 calculates the heat quantity shortage for each time resolution Δt in the heat supply system 1. The heat quantity shortage is the heat quantity that will be insufficient due to the defrosting operation predicted in step S16.

[0047] In step S18, processor 110 determines whether the heat shortage calculated in step S17 is less than an allowable value. For example, the allowable value is determined in advance by a designer or manager of heat supply system 1. If any of the heat shortages for each time resolution Δt is less than the allowable value, processor 110 determines Yes in step S18 and terminates the processing shown in Fig. 2. On the other hand, if any of the heat shortages for each time resolution Δt is equal to or greater than the allowable value, processor 110 determines No in step S18 and proceeds to step S19.

[0048] In step S19, the processor 110 creates a compensation schedule. The compensation schedule is a schedule of compensatory operations required to make up for the lack of heat. The processor 110 determines the start time and output of the compensatory operations so that the amount of heat produced can be compensated for when the defrost operation causes a shortage of heat. The processor 110 also determines which heat source to use for the compensatory operations. The heat source to use for the compensatory operations is, for example, an inactive module 210 or a compensation heat source 300. If the heat source to be used for the compensatory operations is scheduled to be inactive at the time the compensatory operations are performed, the processor 110 also determines the start-up time of the heat source so that heat supply can begin at the scheduled start time of the compensatory operations. The start-up time of the heat source is, for example, the scheduled start time of the compensatory operations minus the time required for the start-up of the heat source. If the heat source to be used for the compensatory operations is scheduled to be in operation at the time the compensatory operations are performed, the processor 110 also determines how much to increase the output of the heat source. The output power after the boost is, for example, the output power before the boost plus the output power required for the compensation operation. Processor 110 also determines the time when the output power is boosted.

[0049] In step S20, processor 110 adds the compensation schedule created in step S19 to the operation schedule created in step S14. After processing step S20, processor 110 returns to step S17. In this manner, processor 110 repeats the processing of steps S17 to S20 until all of the heat quantity deficiencies for each time resolution Δt become less than the allowable value.

[0050] As described above, by performing the processing of steps S17 to S20, processor 110 functions as an example of a "generation unit that adds a schedule of compensation operations to the operation schedule to suppress fluctuations in the supply temperature in the flow path due to defrost operation of the heat source based on the predicted implementation schedule."

[0051] The processor 110 starts the process shown in FIG. 3, for example, when the control device 100 is started up.

[0052] 3, processor 110 of control device 100 waits for the arrival of the time scheduled by the compensation schedule. This time is the time to start up the heat source and increase the output for compensation operation. When the scheduled time arrives, processor 110 determines Yes in step S31 and proceeds to step S32.

[0053] In step S32, processor 110 determines whether to operate the heat source as scheduled. If processor 110 estimates that the actual heat shortage is equal to or less than a predetermined standard, it does not determine to operate the heat source as scheduled. For example, if a scheduled defrost operation is not performed, the heat shortage may fall below the predetermined standard. If processor 110 determines to operate the heat source as scheduled, it determines Yes in step S32 and proceeds to step S33.

[0054] In step S33, the processor 110 starts up or increases the output of the heat source as scheduled by the compensation schedule. After processing in step S33, the processor 110 returns to step S31.

[0055] As described above, processor 110 functions as an example of a "controller that controls the operation of the heat pump chiller and the heat source based on the operation schedule" by performing the process of step S33.

[0056] On the other hand, if the processor 110 determines that the heat source is not to be operated as planned, it makes a "No" determination in step S32 and proceeds to step S34.

[0057] In step S34, processor 110 controls the heat source to perform an operation different from that scheduled by the compensation schedule. For example, processor 110 cancels the compensation operation scheduled by the compensation schedule. Alternatively, processor 110 changes the content of the compensation operation scheduled by the compensation schedule and performs the operation. The change in content may include, for example, changing the heat source used in the compensation operation or changing the amount of increase in the output of the heat source used in the compensation operation. After processing step S34, processor 110 returns to step S31.

[0058] A case where the actual heat quantity shortage is assumed to be equal to or less than a predetermined standard is an example of "a case where the fluctuation in supply temperature due to defrost operation is equal to or less than a predetermined standard." Therefore, the processing of steps S32 and S34 is an example of a process of "controlling the operation of the heat pump chiller and the heat source regardless of the operation schedule when the fluctuation in supply temperature due to defrost operation is equal to or less than a predetermined standard."

[0059] [effect] The heat supply system 1 of the embodiment creates an operation schedule for the module 210 (heat pump chiller) using weather forecast data. Then, the heat supply system 1 of the embodiment predicts the start time of a defrosting operation to remove frost from the module 210 based on the operation schedule. Furthermore, the heat supply system 1 of the embodiment adds a schedule of a compensating operation required to compensate for the heat shortage caused by the defrosting operation to the operation schedule based on the start time. The heat supply system 1 of the embodiment also controls the operation of the module 210 and the heat source device 200 based on the operation schedule. As described above, the heat supply system 1 of the embodiment can predict the execution schedule of the defrosting operation in advance and execute the compensating operation in accordance with the execution schedule. That is, the heat supply system 1 of the embodiment can execute the start-up or output increase of the heat source in advance in accordance with the execution schedule of the defrosting operation. Therefore, the heat supply system 1 of the embodiment can start heat supply without waiting for the time required for the start-up or output increase of the heat source. Therefore, the heat supply system 1 of the embodiment can suppress fluctuations in the supply temperature caused by the defrosting operation of the module 210.

[0060] Furthermore, the heat supply system 1 of the embodiment predicts the hot water load Q1 using weather forecast data. Then, the heat supply system 1 of the embodiment uses the hot water load Q1 to create an operation schedule for the module 210. The heat supply system 1 of the embodiment can improve the prediction accuracy of the operation schedule for the module 210 by predicting the hot water load Q1.

[0061] Furthermore, the heat supply system 1 of the embodiment starts up the heat source as a compensation operation. This allows the heat supply system 1 of the embodiment to start supplying heat without waiting for the start-up time of the heat source. Therefore, the heat supply system 1 of the embodiment can suppress fluctuations in supply temperature due to the defrost operation of the module 210.

[0062] Furthermore, the heat supply system 1 of the embodiment increases the output of the heat source as a compensatory operation. This allows the heat supply system 1 of the embodiment to start heat supply without waiting for the time required for the output of the heat source to increase. Therefore, the heat supply system 1 of the embodiment can suppress fluctuations in the supply temperature due to the defrost operation of the module 210.

[0063] Furthermore, when the fluctuation in the supply temperature is equal to or less than a predetermined standard, the heat supply system 1 of the embodiment controls the operation of the module 210 and the heat source device 200 regardless of the operation schedule. This allows the heat supply system 1 of the embodiment to avoid excessive operation of the heat source when, for example, defrosting operation is not performed contrary to prediction.

[0064] [Variations] The above embodiment can be modified as follows.

[0065] In the above embodiment, the heat supply system 1 uses water as a heat medium. However, the heat supply system of the present disclosure may use a heat medium other than water. The heat medium other than water may be, for example, oil.

[0066] Each device in the embodiments may be composed of a plurality of devices. Each device in the embodiments may be realized using cloud computing.

[0067] The processor 110 may implement some or all of the processes implemented by the programs in the above embodiments by using a hardware circuit configuration.

[0068] A program for implementing the processes of the embodiments may be transferred, for example, stored in a non-transitory computer-readable storage medium within the device. However, the device may also be transferred without the program stored therein. The program may then be transferred separately and written to the device. The program may be transferred, for example, by recording it on a removable, non-transitory computer-readable storage medium or by downloading it via a network such as the Internet or a LAN.

[0069] While the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such embodiments. It is clear that those skilled in the art can conceive of various modifications and alterations within the scope of the claims, and it is understood that such modifications and alterations also fall within the technical scope of the present invention. [Explanation of symbols]

[0070] 1 Heat supply system 100 control device 110 processors 120 ROM 130 RAM 140 Auxiliary storage 150 Communication Interface 160 Control Interface 170 Bus 200 Heat source equipment 210 Module 211 Refrigerant circuit 300 Compensation heat source 400 Supply piping 500 Return piping

Claims

1. a flow path through which a heat transfer medium circulates; At least one heat pump chiller provided in the flow path; a heat source provided in the flow path; a control device that controls the operation of the heat pump chiller and the heat source; Equipped with The control device an acquisition unit that acquires weather forecast data; generating an operation schedule for the heat pump chiller using the weather forecast data; predicting an implementation schedule of a defrosting operation for removing frost from the heat pump chiller based on the generated operation schedule; adding, to the operation schedule based on the predicted implementation schedule, a schedule for starting up or increasing the output of the heat source before the defrost operation as a schedule for a compensating operation of the heat source to suppress fluctuations in the supply temperature in the flow path due to the defrost operation; a generation unit; a control unit that controls operations of the heat pump chiller and the heat source based on the operation schedule; Equipped with Temperature regulation system.

2. the generation unit uses the weather forecast data to predict a hot water load, which is the amount of heat required to raise the temperature of the heat medium, the temperature of which has been lowered by circulating through the flow path, to a predetermined temperature, and generates the operation schedule of the heat pump chiller using the hot water load. The temperature regulation system of claim 1 .

3. the compensating action includes ramping up the heat source; The temperature regulation system of claim 1 .

4. the compensating action includes increasing the power output of the heat source. The temperature regulation system of claim 1 .

5. the control unit controls the operation of the heat pump chiller and the heat source regardless of the operation schedule when a fluctuation in the supply temperature due to the defrost operation is equal to or less than a predetermined standard. The temperature regulation system of claim 1 .

6. The temperature control system Obtain weather forecast data, generating an operation schedule for at least one heat pump chiller provided in a flow path through which a heat medium circulates using the weather forecast data; predicting an implementation schedule of a defrosting operation for removing frost from the heat pump chiller based on the generated operation schedule; based on the predicted implementation schedule, adding to the operation schedule a schedule for a compensating operation of the heat source provided in the flow path to suppress fluctuations in the supply temperature in the flow path due to the defrost operation, the schedule including a start-up or output increase of the heat source provided in the flow path before the defrost operation; controlling the operation of the heat pump chiller and the heat source based on the operation schedule; Temperature adjustment method.

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