JP3814593B2 - Electric heat supply system, housing complex, and program - Google Patents

Description

  The present invention relates to an electric heat supply system that supplies electric power and heat, an apartment house equipped with an electric heat supply system, and a program that causes the electric heat supply system to function. In particular, the present invention relates to an electric heat supply system having a fuel cell.

  Conventionally, solar power generation, fuel cells, and the like in each house have been considered as auxiliary power sources for electric power systems. In addition, due to the recent increase in power demand, it is expected that power supply from the power system will be short in the near future. For this reason, in the electric power supply of each house, it is thought that the dependence with respect to distributed power sources, such as photovoltaic power generation and a fuel cell, increases.

  In addition, in a distributed power source using a fuel cell, there is a cogeneration system that effectively uses exhaust heat accompanying power generation of the fuel cell. In the cogeneration system, for example, the exhaust heat of the fuel cell is accumulated in a hot water tank to provide electric power and hot water. Moreover, since the related patent document is not recognized, the description of the patent document is omitted.

  However, in the conventional distributed power source, the fuel cell of each house is generated according to the electric power consumed by each house, and electric power and hot water are generated. For this reason, excessive warm water will be produced | generated in the period when there is much usage-amount of electric power with respect to the usage-amount of warm water, for example. Since it is difficult to maintain the heat accumulated in the hot water storage tank, the excessively generated hot water is wasted, and the overall energy efficiency of the fuel cell is reduced. In addition, there is a problem that the hot water is insufficient when the amount of electric power used is small relative to the amount of hot water used.

  Then, an object of this invention is to provide the electric power supply system etc. which can solve said subject. This object is achieved by a combination of features described in the independent claims. The dependent claims define further advantageous specific examples of the present invention.

  In order to solve the above-described problem, in the first embodiment of the present invention, an electric heat supply system that supplies electric power to a load and supplies heat to a plurality of hot water storage tanks is provided corresponding to the plurality of hot water storage tanks. A plurality of fuel cells that generate electric power to be supplied to a load and supply heat generated by the power generation to a corresponding hot water storage tank, a history storage unit that stores a history of heat consumption in each hot water storage tank, and a load The amount of heat to be supplied to each hot water tank is calculated on the basis of the amount of electricity demand and the history of heat consumption of each hot water tank stored in the history storage unit, and the power generation of the corresponding fuel cell based on the heat quantity An electric heat supply system including a control unit for controlling the amount is provided.

  Based on the history of heat consumption of each hot water storage stored in the history storage unit, the control unit calculates the required hot water storage amount to be stored in each hot water storage tank, and the hot water storage amount is smaller than the required hot water storage amount. One or more corresponding fuel cells may generate power to be supplied to the load.

  The control unit calculates the required hot water temperature to be stored in each hot water tank based on the history of heat consumption of each hot water tank stored in the history storage unit, and the hot water temperature is smaller than the required hot water temperature. One or more corresponding fuel cells may generate power to be supplied to the load.

  The electric heat supply system may further include an electric power network that supplies electric power to a plurality of loads, and distributes the electric power generated by the respective fuel cells to the respective loads according to the electric power demand of the respective loads. Based on the history of heat consumption of the hot water storage stored in the history storage unit, the control unit calculates the predicted heat demand for a predetermined period in the future of each hot water storage, and calculates each predicted heat demand The power network controls the power generation amount of the corresponding fuel cell so that the amount of heat can be supplied, and the power network determines that the total power generation amount of the plurality of fuel cells controlled by the control unit is larger than the total power demand amount of the plurality of loads. The power storage unit may store excess power.

  When the predicted heat demand increases at a certain time, the control unit may increase the power generation amount of the corresponding fuel cell in advance before a predetermined time from the certain time. In the case where the control unit generates power corresponding to the expected heat demand of each hot water storage tank, and the total power generation amount of the plurality of fuel cells is smaller than the total power demand amount of the plurality of loads, The insufficient power may be supplied from the power storage unit to the load.

  The control unit generates a plurality of sums of the total power generation amount of the plurality of fuel cells and the amount of power that can be supplied by the storage battery when the corresponding fuel cell is caused to generate power according to the expected heat demand of each storage tank. When the total power demand of the load is smaller than the total power demand, the predicted heat demand in the corresponding hot water storage tank may increase the power generation amount of the fuel cell that will increase in the near future.

  The power network is connected to an external power system, and when the sum of the total power generation amount of the plurality of fuel cells and the power amount that can be supplied by the storage battery is smaller than the total power demand amount of the plurality of loads, the power shortage May be received from an external power system.

  A plurality of electric heaters that are provided corresponding to each hot water tank and that generate heat by electric power are further provided, and the control unit generates power for the corresponding fuel cell according to the expected heat demand of each hot water tank. When the power generation efficiency of the fuel cell is equal to or lower than a predetermined efficiency, power generation of the fuel cell may be stopped and heat may be supplied from the corresponding electric heater to the hot water tank.

  When supplying heat from the electric heater to the hot water tank, the control unit increases the electric power generation amount of the fuel cell having the highest power generation efficiency among the fuel cells that are generating electric power to drive the electric heater. The device may be supplied with power. The control unit may calculate the amount of heat to be supplied to each hot water tank based further on the user information given by the user.

  In the second embodiment of the present invention, an apartment house having a plurality of dwellings including a load driven by electric power and a hot water tank that consumes heat is provided for each dwelling, and generates electric power supplied to the load. A plurality of fuel cells for supplying exhaust heat generated by power generation to corresponding hot water storage tanks, a history storage section for storing a history of heat consumption in each of the hot water storage tanks, a load power demand amount, and a history storage section. A set comprising a control unit that calculates the amount of heat to be supplied to each hot water tank based on the history of heat consumption of each stored hot water tank and controls the power generation amount of the corresponding fuel cell based on the heat quantity Provide housing.

  In the third embodiment of the present invention, there is provided a program for causing an electric heat supply system to function, wherein the electric heat supply system supplies electric power to a load and supplies heat to a plurality of hot water storage tanks. It is provided corresponding to each hot water storage tank, generates electricity to be supplied to the load, and stores multiple fuel cells that supply exhaust heat generated by the power generation to the corresponding hot water storage tank, and the heat consumption history of each hot water storage tank Calculating the amount of heat to be supplied to each storage tank based on the history storage unit, the load power demand, and the history of heat consumption of each storage tank stored in the history storage unit, and based on the amount of heat And a program that functions as an electric heat supply system including a control unit that controls the power generation amount of the corresponding fuel cell.

  The above summary of the invention does not enumerate all the necessary features of the present invention, and sub-combinations of these feature groups can also be the invention.

  According to the present invention, electric power and heat can be efficiently supplied to each load and hot water tank.

  Hereinafter, the present invention will be described through embodiments of the invention. However, the following embodiments do not limit the invention according to the scope of claims, and all combinations of features described in the embodiments are included. It is not necessarily essential for the solution of the invention.

  FIG. 1 shows an example of the configuration of an electric heat supply system 100 according to an embodiment of the present invention. The electric heat supply system 100 in this example supplies electric power to a plurality of loads (10a to 10c, hereinafter collectively referred to as 10) provided in each residence (110a to 110c, hereinafter collectively referred to as 110) of the apartment house, Heat is supplied to a plurality of hot water tanks (30a to 30c, hereinafter collectively referred to as 30) provided in each residence 110 of the house. Here, the collective housing may be one in which a plurality of residences 110 are provided in one building, and may be one in which a plurality of buildings provided in a predetermined area are respectively designated as residences 110.

  The electric heat supply system 100 includes an electric power network 10, a plurality of fuel cells (20a to 20c, hereinafter collectively referred to as 20), a history storage unit 50, a control unit 60, and a power storage unit 40. The plurality of fuel cells 20 are provided corresponding to the plurality of hot water tanks 30, generate electric power to be supplied to the corresponding loads 10, and supply heat generated by the power generation to the corresponding hot water tanks 30. Each hot water tank 30 receives the exhaust heat of the fuel cell 20 by circulating cooling water for cooling the corresponding fuel cell 20, for example.

  Each fuel cell 20 is, for example, a polymer electrolyte fuel cell (PEFC). Each fuel cell 20 may be, for example, a product that reforms city gas, propane gas, or the like supplied to each residence to generate hydrogen gas as fuel, and uses hydrogen gas supplied from the outside as fuel. It may be.

  The plurality of fuel cells 20 are connected to the power network 10 and are provided so as to be able to supply power to the load 10 provided in another residence 110 via the power network 10. Similarly, the plurality of loads 10 are connected to the power network 10 so as to be able to receive power from the fuel cells 20 provided in other residences 110 via the power network 10. That is, the power network 10 distributes the power generated by each fuel cell 20 to each load 10 according to the power demand of each load 10.

  The history storage unit 50 stores a history of heat consumption in each hot water storage tank 30. For example, the history storage unit 50 may divide a day into a plurality of time zones and store a history of heat consumption in each hot water tank 30 for each time zone. The history storage unit 50 may store the amount of hot water to be supplied by each hot water tank 30 as the heat consumption for each time zone, and the temperature of the hot water to be supplied by each hot water tank 30. May be stored for each time period as the heat consumption. The history storage unit 50 may store the amount of hot water to be supplied by each hot water tank 30 and the temperature thereof as the heat consumption.

  The control unit 60 supplies the corresponding hot water tank 30 from each fuel cell 20 based on the power demand amount of each load 10 and the history of the heat consumption of each hot water tank 30 stored in the history storage unit 50. The amount of heat to be calculated is calculated, and the power generation amount of each fuel cell 20 is controlled based on the calculated amount of heat. That is, the electric heat supply system 100 in this example controls the power generation amount of the fuel cell 20 so that the exhaust heat amount of the fuel cell 20 is substantially the same as the heat consumption amount in each residence. Such control can prevent excessive generation of heat in each residence.

  For example, the control unit 60 calculates the necessary hot water storage amount to be stored in each hot water storage 30 based on the heat consumption history of each hot water storage 30 stored in the history storage unit 50, and the hot water storage amount is required. The electric power supplied to the load 10 may be generated in one or more fuel cells corresponding to the hot water storage tank smaller than the amount. Moreover, the control part 60 calculates the required hot water temperature which should be stored in each hot water tank based on the heat consumption log | history of each hot water tank 30 which the log | history storage part 50 stored, and hot water temperature is required hot water temperature. One or a plurality of fuel cells 20 corresponding to smaller hot water tanks 30 may generate power to be supplied to the load 10. That is, the control unit 60 may perform control so that the corresponding fuel cell 20 does not generate power when the amount of heat necessary for the hot water tank 30 is accumulated.

  In addition, the control unit 60 calculates a predicted heat demand for a predetermined period in the future of each hot water tank 30 based on the heat consumption history of each hot water tank 30 stored in the history storage unit 50. The power generation amount of the corresponding fuel cell 20 may be controlled so that the calculated predicted heat demand can be supplied.

  For example, based on the heat consumption history of the same day of the previous year or the previous month among the heat consumption history stored in the history storage unit 50, the control unit 60 predicts the predicted heat demand in each hot water tank 30 on that day. May be calculated. In addition, the control unit 60 calculates the average value of the predetermined number of days of the history of heat consumption in each time zone obtained by dividing the day into a plurality of time zones, for each hot water storage in each time zone of the day. It may be calculated as the predicted heat demand of the bag 30. Moreover, the control part 60 may classify | categorize the log | history of the heat consumption in the predetermined period for every day of the week, and may calculate the predicted heat demand for every day of the week. Even in this case, the predicted heat demand in each time zone obtained by dividing each day of the week into a plurality of time zones may be calculated. In addition, the control unit 60 may calculate a future predicted heat demand based on the current heat consumption. For example, the temperature of the hot water currently supplied may be detected, and the average value of the continuous hot water supply temperature may be calculated from the past history.

  In addition, the control unit 60 may calculate the above-described predicted heat demand based on user information given by the user. Here, the user information is given in advance to the control unit 60 in association with date information that specifies the date and time when the predicted heat demand is to be calculated using the user information.

  The user information may be given in advance, for example, the user's scheduled return time. In this case, the control unit 60 compares the scheduled return time of the user on the previous day with the scheduled return time of the user on the current day, and calculates the predicted heat demand for each time zone on the current day based on the difference in the scheduled return time. It may be calculated. The control unit 60 may be given the return time of the user on the previous day, and may compare the return time of the user on the previous day with the scheduled return time of the user on the current day. For example, when the scheduled return time on the current day is two hours earlier than the previous day's return time, the control unit 60 calculates the predicted heat demand for each time zone on the current day to be advanced by 2 hours.

  Further, the user information may be day information given by the user, for example. In this case, as described above, the control unit 60 calculates the predicted heat demand for each day of the week in advance, and calculates the predicted heat demand for the day from the predicted heat demand for each day of the week based on the day of week information given by the user. select. The operation | movement of the control part 60 like these can calculate the predicted heat demand according to a user's life cycle appropriately.

  In this example, since the power generation amount of the fuel cell 20 is controlled according to heat consumption in each residence, the fuel cell 20 has excessive power with respect to the power demand amount of the load 10 of each residence, or It may be generated too small. Each fuel cell 20 supplies surplus power to the power network when the generated power is larger than the power demand of the corresponding load 10. In addition, when the power generated by the fuel cell 20 is smaller than the power demand amount of the corresponding load 10, the power network 10 supplies the surplus power received from the other fuel cells 20 to the load 10 that lacks power. By performing such control, the electric power generated by each fuel cell 20 can be used efficiently. For this reason, the energy efficiency of the whole several fuel cell 20 can be improved.

  The power network 10 also includes a power storage unit 40 that stores surplus power when the total power generation amount of the plurality of fuel cells 20 controlled by the control unit 60 is larger than the total power demand amount of the plurality of loads 10. It's okay. When the control unit 60 generates the corresponding fuel cell 20 according to the predicted heat demand of each hot water tank 30, the total power generation amount of the plurality of fuel cells 20 is the total power demand amount of the plurality of loads 10. If it is smaller, the insufficient power is supplied from the power storage unit 40 to the load 10. Such control can further reduce the waste of generated power and further improve energy efficiency.

  In addition, when the control unit 60 generates the corresponding fuel cell 20 according to the expected heat demand of each hot water tank 30, the total power generation amount of the plurality of fuel cells 20 and the amount of power that can be supplied by the storage battery 40 May be smaller than the total power demand of the plurality of loads 10. In such a case, since the power is insufficient, the control unit 60 increases the power generation amount of the fuel cell 20 that increases in the near future in which the predicted heat demand in the corresponding hot water storage tank 30 is closest, and reduces the power shortage. You may make up for it.

  The power network 10 may be connected to an external power system. In this case, as described above, when the power is insufficient, the insufficient power may be received from the external power system and supplied to the load 10. By such control, the electric power and heat generated by the electric heat supply system 100 can be used without waste.

  Since electric power is easier to distribute and store over a longer distance than heat, the fuel cell 20 of each residence 110 is controlled according to the predicted heat consumption as in the electric heat supply system 100 in this example. Thus, power and heat can be efficiently supplied to each residence 110.

  FIG. 2 shows an example of the predicted heat demand in each hot water tank 30. In this example, the control unit 60 calculates the predicted heat demand in each time zone obtained by dividing one day into a plurality of time zones. As described above, the control unit 60 controls the power generation amount of each fuel cell 20 based on the predicted heat demand of the corresponding hot water tank 30. For example, when the predicted heat demand of the hot water storage tank 30a increases at a certain time a, the control unit 60 increases the power generation amount of the corresponding fuel cell 20a in advance before a predetermined time from the certain time a. Good. For example, the control unit 60 increases the power generation amount of the fuel cell 20a or activates the fuel cell 20a before a predetermined time from the certain time a based on the fluctuation rate of the heat supply amount of the fuel cell 20a. Good. By such control, a desired amount of heat can be accurately supplied at a desired time.

  FIG. 3 shows another example of the configuration of the electric heat supply system 100. In this example, in addition to the configuration of the electric heat supply system 100 described in FIG. 1, the electric heat supply system 100 is provided corresponding to each hot water tank 30 and generates a plurality of electric heaters (70a to 70c, below) that generate heat by electric power. 70). 3, components having the same reference numerals as those in FIG. 1 have the same or similar functions and configurations as the components described in FIG.

  When the power generation efficiency of the fuel cell 20 is equal to or lower than a predetermined efficiency when the corresponding fuel cell 20 is generated according to the expected heat demand of each hot water tank 30, the control unit 60 The power generation of the battery 20 may be stopped. In this case, in order to supply heat to the corresponding hot water tank 30, the control unit 60 supplies heat to the hot water tank 30 from the electric heater 70 corresponding to the stopped fuel cell 20.

  In this case, the control unit 60 increases the power generation amount of the fuel cell 20 operating in the region where the power generation efficiency is highest among the fuel cells 20 that are generating power, to increase the amount of power for driving the electric heater 70, Electric power is supplied to the electric heater 70. Further, the control unit 60 calculates the amount of electric power for driving the electric heater 70 according to the predicted heat consumption amount of the hot water tank 30. By such control, it is possible to prevent the fuel cell 20 from operating at low power generation efficiency while stably supplying heat to the hot water tank 30, and to improve power generation efficiency.

  FIG. 4 shows an example of the configuration of a computer 300 that controls the electric heat supply system. In this example, the computer 300 stores a program that causes the electric heat supply system to function as the electric heat supply system 100 described with reference to FIGS. 1 to 3. The computer 300 may further function as the history storage unit 50 and the control unit 60 of the electric heat supply system 100.

  The computer 300 includes a CPU 700, a ROM 702, a RAM 704, a communication interface 706, a hard disk drive 710, a flexible disk drive 712, and a CD-ROM drive 714. The CPU 700 operates based on programs stored in the ROM 702, the RAM 704, the hard disk drive 710, the flexible disk 720, and / or the CD-ROM 722.

  For example, a program that causes the electric heat supply system 100 to function causes the computer 300 to function as the history storage unit 50 and the control unit 60 described with reference to FIGS. 1 to 3, and the fuel cell 20, the power storage unit 40, and the power network. 10 and the electric heater 70 are controlled as described with reference to FIGS. 1 to 3 to operate the electric heat supply system.

  The communication interface 706 communicates with, for example, the fuel cell 20, the power storage unit 40, the power network 10, and the electric heater 70, receives information regarding each state and the like, and transmits a control signal for controlling each. The hard disk drive 710, the ROM 702, or the RAM 704 as an example of a storage device stores setting information, a program for operating the CPU 700, and the like. The program may be stored in a recording medium such as the flexible disk 720 and the CD-ROM 722.

  When the flexible disk 722 stores a program, the flexible disk drive 712 reads the program from the flexible disk 722 and provides it to the CPU 700. When the CD-ROM 722 stores a program, the CD-ROM drive 714 reads the program from the CD-ROM 722 and provides it to the CPU 700.

  Further, the program may be read directly from the recording medium into the RAM and executed, or once installed in the hard disk drive 710, the program may be read into the RAM 704 and executed. Further, the program may be stored in a single recording medium or a plurality of recording media. The program stored in the recording medium may provide each function in cooperation with the operating system. For example, the program may request the operating system to perform a part or all of the function and provide the function based on a response from the operating system.

  As a recording medium for storing a program, in addition to a flexible disk and a CD-ROM, an optical recording medium such as a DVD and a PD, a magneto-optical recording medium such as an MD, a tape medium, a magnetic recording medium, an IC card, a miniature card, etc. A semiconductor memory or the like can be used. A storage device such as a hard disk or a RAM provided in a server system connected to a dedicated communication network or the Internet may be used as a recording medium.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

It is a figure showing an example of composition of electric heat supply system 100 concerning an embodiment of the present invention. (Example 1) It is a figure which shows an example of the predicted heat demand. It is a figure which shows the other example of a structure of the electric heat supply system. (Example 2) It is a figure which shows an example of a structure of the computer 300 which controls an electric-heat supply system. (Example 3)

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Load, 20 ... Fuel cell, 30 ... Hot water storage tank, 40 ... Power storage part, 50 ... History storage part, 60 ... Control part, 70 ... Electric heater, 100 ... Electric heat supply system, 300 ... Computer, 700 ... CPU, 702 ... ROM, 704 ... RAM, 706 ... Communication interface, 710 ... Hard disk drive, 712 ... Flexible Disk drive, 714 ... CD-ROM drive, 720 ... Flexible disk, 722 ... CD-ROM

Claims (14)

An electric heat supply system that supplies electric power to a load and supplies heat to a plurality of hot water storage tanks,
A plurality of fuel cells provided corresponding to the plurality of hot water tanks, generating electric power to be supplied to the load, and supplying heat generated by the power generation to the corresponding hot water tanks;
A history storage unit for storing a history of heat consumption in each of the hot water storage tanks;
Based on the power demand amount of the load and the history of the heat consumption of each hot water storage stored in the history storage unit, the amount of heat to be supplied to each hot water storage is calculated, and based on the amount of heat An electric heat supply system comprising: a control unit that controls a power generation amount of the corresponding fuel cell.   The control unit calculates a required hot water storage amount to be stored in each hot water storage tank based on a history of the heat consumption of each hot water storage stored in the history storage unit, and the hot water storage amount is the required hot water storage amount. The electric heat supply system according to claim 1, wherein the electric power supplied to the load is generated in one or a plurality of the fuel cells corresponding to the hot water tank smaller than the amount.   The control unit calculates a required hot water temperature to be stored in each hot water tank based on a history of the heat consumption of each hot water tank stored in the history storage unit, and the hot water temperature is the required hot water temperature. The electric heat supply system according to claim 1, wherein the electric power supplied to the load is generated in one or a plurality of the fuel cells corresponding to the hot water storage tank having a temperature lower than the temperature. The electric heat supply system supplies power to the plurality of loads,
The electric heat supply system according to claim 1, further comprising: an electric power network that distributes the electric power generated by each of the fuel cells to each of the loads according to the amount of electric power demand of the load. The control unit calculates and calculates a predicted heat demand for a predetermined period in the future of each of the hot water tanks based on the history of the heat consumption of the hot water tanks stored in the history storage unit. Control the power generation amount of the corresponding fuel cell so that the predicted heat demand can be supplied,
The power network includes a power storage unit that stores surplus power when a total power generation amount of the plurality of fuel cells controlled by the control unit is larger than a total power demand amount of the plurality of loads. The electric heat supply system described.   6. The electric heating according to claim 5, wherein, when the predicted heat demand increases at a certain time, the control unit increases the power generation amount of the corresponding fuel cell in advance before a predetermined time from the certain time. Supply system.   In the case where the control unit generates the fuel cell corresponding to the predicted heat demand of each of the hot water storage tanks, the total power generation amount of the plurality of fuel cells is the total power demand of the plurality of loads. The electric heat supply system according to claim 5, wherein when the amount is smaller than the amount, insufficient electric power is supplied from the power storage unit to the load.   The control unit, when generating the fuel cell corresponding to the expected heat demand of each of the hot water storage tanks, the total power generation amount of the plurality of fuel cells and the amount of power that can be supplied by the storage battery The power generation amount of the fuel cell is increased in the future in which the predicted heat demand in the corresponding hot water storage tank is increased in the nearest future when the sum of the two is smaller than the total power demand of the plurality of loads. The electric heat supply system described.   The power network is connected to an external power system, and the sum of the total power generation amount of the plurality of fuel cells and the power amount that can be supplied by the storage battery is smaller than the total power demand amount of the plurality of loads. The electric heat supply system according to claim 7, wherein insufficient electric power is received from the external electric power system. Provided corresponding to each of the hot water storage tanks, further comprising a plurality of electric heaters that generate heat by electric power,
When the power generation efficiency of the fuel cell is equal to or lower than a predetermined efficiency when the fuel cell corresponding to the predicted heat demand of each of the hot water storage tanks is generated, 6. The electric heat supply system according to claim 5, wherein power generation of the fuel cell is stopped and heat is supplied from the corresponding electric heater to the hot water tank.   When the controller supplies heat from the electric heater to the hot water tank, the control unit drives the electric heater with the amount of power generated by the fuel cell having the highest power generation efficiency among the fuel cells that are generating electric power. The electric heat supply system according to claim 10, wherein electric power is increased and electric power is supplied to the electric heater.   The electric heat supply system according to claim 1, wherein the control unit calculates the amount of heat to be supplied to each of the hot water tanks based on user information given from a user. A housing complex including a plurality of houses including a load driven by electric power and a hot water tank that consumes heat,
A plurality of fuel cells provided for each of the dwellings, generating power to be supplied to the load, and supplying exhaust heat generated by the power generation to the corresponding hot water storage tanks;
A history storage unit for storing a history of heat consumption in each of the hot water storage tanks;
Based on the power demand amount of the load and the history of the heat consumption of each hot water storage stored in the history storage unit, the amount of heat to be supplied to each hot water storage is calculated, and based on the amount of heat A housing complex comprising a control unit for controlling the power generation amount of the corresponding fuel cell.   A plurality of fuel cells provided corresponding to a plurality of hot water storage tanks, generating electric power to be supplied to a load, and supplying waste heat generated by the power generation to the corresponding hot water storage tanks, and heat consumption in each of the hot water storage tanks A program for functioning a control unit for controlling an electric heat supply system including a history storage unit for storing a history,
  The control unit
  Based on the power demand amount of the load and the history of the heat consumption of each hot water storage stored in the history storage unit, the amount of heat to be supplied to each hot water storage is calculated, and based on the amount of heat A program that functions as a control unit that controls the power generation amount of the corresponding fuel cell.

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