JP4487140B2 - Hot water supply system - Google Patents

Description

  The present invention relates to a hot water supply heat source including a cogeneration hot water supply heat source device that supplies hot water (heat storage) accumulated in a hot water storage tank to a hot water supply destination using exhaust heat of a power generator such as a polymer electrolyte fuel cell (PEFC). It is about the system.

  In recent years, as a system capable of producing an energy-saving effect, for example, cogeneration hot water that uses hot heat accumulated in a hot water storage tank (heat storage) to a hot water supply destination using exhaust heat of a power generation device such as a polymer electrolyte fuel cell A heat source device has been proposed (see, for example, Patent Document 1).

  FIG. 8 shows an example of a cogeneration hot water supply heat source device. The cogeneration hot water supply heat source device 3 includes a power generation device 1 and a hot water storage tank 2, and the hot water storage tank 2 introduces water into the hot water storage tank 2 and a hot water supply path 12 that supplies hot water from the hot water storage tank 2. It has. A hot water temperature detection sensor 100 is provided in the hot water supply path 12.

  Between the hot water storage tank 2 and the power generation device 1, a cooling water introduction passage 13 and a waste hot water introduction passage 14 are provided. The cooling water introduction passage 13 uses the water in the hot water storage tank 2 as cooling water for the power generation device 1. The water is introduced into the power generation device 1 side and heated by exhaust heat generated during power generation by the power generation device 1 to form hot water having a set temperature of, for example, 60 ° C., and is accumulated in the hot water storage tank 2 through the exhaust hot water introduction passage 14. That is, the cooling water introduction passage 13 and the exhaust hot water introduction passage 14 form a means for heating the water in the hot water storage tank 2 by the exhaust heat of the power generator 1 to make hot water.

  A drainage passage 15 for draining the water in the hot water storage tank 2 is provided below the hot water storage tank 2, and a drainage valve (for example, a drainage electromagnetic valve) 52 is provided in the drainage path 15. A pressure relief passage 16 is provided above the hot water storage tank 2, and an overpressure relief valve 50 is provided in the pressure relief passage 16. The hot water tank 2 is usually filled with hot water or water. In this figure, the region filled with hot water is indicated by hatching in order to make the drawing easy to understand.

  In the cogeneration hot water supply heat source device 3, when the power generation device 1 is activated, water stored in the lower part of the hot water tank 2 is introduced into the power generation device 1 through the cooling water introduction passage 13, and is discharged when the power generation device 1 generates power. The hot water is heated to be hot water, and this hot water is introduced into the hot water tank 2 from the upper side of the hot water tank 2 through the exhaust hot water introduction passage 14. When this operation is repeated, the water on the lower side of the hot water tank 2 is made hot by the exhaust heat of the power generator 1 and introduced into the upper side of the hot water tank 2, so that the hot water tank 2 shown by the broken line A in FIG. The boundary line between the water and hot water inside moves to the lower side of the hot water tank 2.

  For example, if the hot water storage tank 2 is entirely filled with hot water having a power generation allowable temperature (for example, 40 ° C. lower than the set temperature) or higher, cooling water cannot be introduced into the power generation device 1. It cannot generate electricity. That is, in the cogeneration hot water supply heat source device 3, the value corresponding to the heat storage amount or the heat storage amount of hot water in the hot water storage tank 2 is a power generation disapproval limit threshold value (in the above example, all the hot water in the hot water storage tank 2 has a value of 40 degrees or more. ) At this time, the power generation by the power generation device 1 is stopped.

  Further, when the hot water in the hot water storage tank 2 is supplied to an appropriate hot water supply place through the hot water supply path 12, water is supplied from the water supply pipe 11 into the hot water storage tank 2 by the amount of hot water reduced by this water supply. A boundary line between water and hot water in the hot water tank 2 indicated by a broken line A in FIG.

  The cogeneration hot water supply heat source device 3 as described above is often used in combination with, for example, an auxiliary hot water supply heat source device including a hot water heater. When the auxiliary hot water supply heat source device and the cogeneration hot water supply heat source device 3 are provided side by side, a combined hot water supply heat source system is formed.

  In such a combined hot water supply heat source system, the hot water temperature (for example, the detection temperature of the hot water temperature detection sensor 100) supplied from the hot water storage tank 2 of the cogeneration hot water supply heat source device 3 is, for example, less than (hot water supply set temperature + 1) ° C. When it is determined that the heat storage is lost, the hot water supply heat source is switched to the auxiliary hot water supply heat source device to continue the hot water supply.

JP2003-120998

  By the way, in a hot water supply heat source system, a system having an automatic hot water filling function that automatically fills a bathtub from a hot water supply heat source is often used. When the hot water filling is performed using this automatic hot water filling function, for example, a bathing time may be reserved in advance by a timer and the hot water filling may be performed so that bathing can be performed at the bathing time. In the case of hot water filling by this timer reservation, the hot water supply heat source system reversely calculates the hot water filling start time from the bathing reservation time set by the timer, and starts hot water filling at the hot water filling start time.

  However, for example, in the hot water supply system including the cogeneration hot water supply heat source device and the auxiliary hot water supply heat source device as described above, if it is determined that the cogeneration hot water supply heat source device has no stored heat, the auxiliary hot water supply heat source device is Therefore, depending on the heat storage state of the cogeneration hot water supply heat source device, there is a problem that hot water supply using the cogeneration hot water supply heat source device as a hot water supply heat source cannot be performed efficiently.

  Further, in the hot water supply system having the cogeneration hot water supply heat source device 3, the heat storage amount of hot water in the hot water storage tank 2 or a value corresponding to the heat storage amount is a power generation disapproval limit threshold value (in the above example, all of the hot water storage tank 2 When the hot water is 40 degrees or more), the power generation by the power generation device 1 is stopped, and the power generation by the power generation device 1 cannot be performed. There was a problem that economical operation was impossible because it could not be used and had to rely on power purchase.

  The present invention has been made in order to solve the above-described conventional problems, and an object of the present invention is to efficiently perform hot water supply using a cogeneration hot water supply heat source device as a hot water supply heat source and to require electric power. In this case, an object is to provide a hot water supply heat source system that is economically operable and has a high ratio in which the power generation by the power generation device can be used.

In order to achieve the above object, the present invention has the following configuration as means for solving the problems. That is, the first invention provides a hot water supply heat source system comprising a cogeneration hot water supply heat source device that supplies hot water stored in the hot water storage tank, which stores heat in the hot water storage tank using the exhaust heat of the power generator, to the hot water supply destination. A heat storage amount detection unit for obtaining a heat storage amount or a value corresponding to the heat storage amount based on monitor information related to heat storage amount detection of the operation state of the generation hot water supply heat source device, a power generation device operation state detection unit for detecting the operation state of the power generation device, Each time on the time axis for each set cycle having a cycle of an integer multiple of one day (an integer multiple of 1 or more) based on information obtained from the power generator operating status detection unit and time information obtained from a clock mechanism A power usage data detection unit that detects power usage data for the power consumption, and stores detection data detected by the power usage data detection unit, and sets the set frequency based on the stored data. A power usage relationship data learning storage unit that learns and stores the relationship between the time on each time axis and the power usage of the power generation device as power usage relationship data, and for each time on the time axis for each set period A hot water use amount data detecting unit that detects hot water use amount data of the hot water source system based on information on the hot water flow rate obtained from the flow sensor and time information obtained from the clock mechanism, and detected by the hot water use amount data detecting unit A hot water use amount relational data learning storage unit that accumulates the detected data and learns and stores the relationship between the time on the time axis and the hot water use amount for each set period as hot water use amount relation data based on the accumulated data. When there is a hot water supply demand that exceeds a predetermined hot water supply amount, a heat storage amount for determining whether heat storage can be used or a value corresponding to the heat storage amount is given as the heat storage use threshold value. There is a hot water supply demand that is equal to or greater than the set hot water supply amount when the detected heat storage value of either the heat storage amount detected by the heat storage amount detection unit or a value corresponding to the heat storage amount is less than the heat storage use threshold. Sometimes, the detected heat storage value reaches or exceeds the heat storage use threshold when the detected heat storage value reaches or exceeds the heat storage use threshold within a preset time with reference to the power use amount relation data and the hot water supply use relation data. The hot water supply start timing delay control unit for delaying the start of hot water supply exceeding the set hot water supply amount using the hot water storage tank as the hot water supply heat source is a means for solving the problem.

The second invention is a hot water supply heat source system comprising a cogeneration hot water supply heat source device that supplies hot water stored in the hot water storage tank using the exhaust heat of the power generator to the hot water supply destination. When the value corresponding to the amount or the heat storage amount is less than a predetermined power generation permission limit threshold, power generation by the power generation device is possible, and when the heat storage amount or the value corresponding to the heat storage amount is equal to or greater than the power generation disapproval limit threshold, the power generation device The power generation is configured to be stopped, and a heat storage amount detection unit for obtaining a heat storage amount or a value corresponding to the heat storage amount based on monitor information related to the heat storage amount detection of the operation status of the cogeneration hot water supply heat source device; Based on the power generation device operation status detection unit that detects the operation status, the information obtained from the power generation device operation status detection unit, and the time information obtained from the clock mechanism, A power usage data detection unit for detecting power usage data for each time on the time axis for each set cycle having an integer multiple (an integer multiple of 1 or more) as a cycle, and the power usage data detection unit A power usage amount related data learning storage unit that stores detection data and learns and stores the relationship between the time on the time axis for each set period and the power usage amount used by the power generation device as power usage amount relationship data based on the stored data. And hot water usage amount of the hot water supply system for each time on the time axis for each set period based on hot water flow rate information obtained from the flow sensor and time information obtained from the clock mechanism The detection data detected by the data detection unit and the hot water use amount data detection unit are accumulated, and based on the accumulated data, the time on the time axis for each set period and the hot water use amount A hot water use amount-related data learning storage unit that learns and stores the charge as hot water use amount-related data, and detects either one of the heat storage amount detected by the heat storage amount detection unit and a value corresponding to the heat storage amount The detected heat storage value is greater than or equal to the power generation disapproval limit threshold when it is predicted that there is a power demand that is greater than or equal to a predetermined set power amount with reference to the value, the power consumption relationship data, and the hot water usage relationship data. When it is predicted that there will be a hot water supply demand from the hot water tank within a preset set time, and when it is predicted that there will be a hot water demand within the set time, this predicted hot water start timing A configuration having a hot water supply start timing advance control unit that starts the hot water supply before the hot water supply start timing is advanced earlier than the detected heat storage value becomes equal to or greater than the power generation disapproval limit threshold. As a means to solve the problem.

  Furthermore, in addition to the configuration of the first or second invention, the third invention is provided with a hot water supply passage for supplying hot water to the hot water storage tank and supplying water to one or more hot water destinations including a bathtub. The hot water supply for delaying or accelerating the start timing of hot water supply is a means for solving the problem by including a hot water supply automatically filling the bathtub.

  Furthermore, in addition to the configuration of the first, second, or third invention, the fourth invention is a bathtub, a recirculation circuit that circulates hot water in the bathtub through a recuperation heat exchanger, A hot water tank hot water circulation pipe for circulating hot water in the hot water tank, and the reheating heat exchanger utilizes the heat of hot water when the hot water in the hot water tank is circulated through the hot water tank hot water circulation pipe. The hot water supply is configured to heat the hot water passing through the reheating heat exchanger, and delays or accelerates the start timing of the hot water supply by circulating the hot water in the hot water tank through the hot water tank hot water circulation conduit. A configuration having a hot water supply for automatically replenishing hot water is used as means for solving the problems.

  Furthermore, in addition to the configuration of any one of the first to fourth inventions described above, the fifth invention is configured such that the heat generated by the power generation device or the heat A means for heating the water in the hot water storage tank using the heat of the exhaust heat absorbing fluid of the power generation device is provided, the hot water formed by the means is accumulated in the hot water storage tank, and the hot water in the hot water storage tank is stored. A configuration that is configured to supply the hot water supply destination through the hot water supply path is a means for solving the problem.

  Further, the sixth invention is an auxiliary hot water supply heat source device having a function of supplying hot water prepared by heating the water to the hot water supply destination in addition to the configuration of any one of the first to fifth inventions. Is connected to the cogeneration hot water supply heat source device, and the hot water passage fed from the hot water storage tank of the cogeneration hot water supply heat source device is connected to the water supply inlet of the auxiliary hot water supply heat source device, and only hot water from the hot water storage tank is used as the heat source When the hot water is stored, the hot water in the hot water storage tank is configured to supply hot water to the hot water supply destination via the auxiliary hot water supply heat source device in a non-heated drive state, and is a means for solving the problem.

  Furthermore, the seventh invention solves the problem with the structure of any one of the first to sixth inventions, in which the power generating device is a fuel cell that generates electricity by reacting hydrogen and oxygen. As a means.

  In the present invention, according to the configuration in which the hot water supply start timing delay control unit is provided, when the detected heat storage value of one of the heat storage amount and the value corresponding to the heat storage amount is less than the heat storage use threshold value, the set hot water supply amount or more When there is a hot water supply demand, it is determined whether or not the detected heat storage value reaches or exceeds the heat storage use threshold within a predetermined set time, and the detected heat storage value reaches or exceeds the heat storage use threshold within the set time. When it is predicted, the start of hot water supply exceeding the set hot water supply amount using the hot water storage tank as the hot water supply heat source is delayed until the detected heat storage value reaches the heat storage utilization threshold value or more. It can be carried out.

  Further, in the present invention, according to the configuration having the hot water supply start timing advance control unit, when it is predicted that there is an electric power demand equal to or more than a predetermined set electric energy, either the heat storage amount or a value corresponding to the heat storage amount When one detected heat storage value is predicted to be equal to or greater than the power generation disapproval limit threshold, it is determined whether there is a hot water supply demand from the hot water storage tank within a predetermined set time, and the hot water supply demand is within the set time. When predicted to be present, the hot water supply start timing is made earlier than the predicted hot water supply start timing, so that when electric power is required, the rate at which power generation by the power generator can be used can be increased.

  Further, in the present invention, the hot water supply that delays or speeds up the start timing of hot water supply includes a hot water supply that automatically fills the bathtub, or the hot water in the hot water tank is circulated through the hot water tank hot water circulation conduit. According to the configuration having the hot water supply for automatically reheating the hot water in the inside, it is possible to realize a hot water supply heat source system that can efficiently use the hot water supply and the power generation device by controlling the start timing of the hot water supply.

  Furthermore, in the present invention, hot water formed by means provided between the hot water storage tank of the cogeneration hot water supply heat source device and the power generation device is accumulated in the hot water storage tank, and the hot water of this hot water storage tank is provided in the hot water storage tank. According to the configuration of supplying to the hot water supply destination through the hot water supply path, hot water accumulation by the cogeneration hot water supply heat source device and hot water supply from the hot water storage tank can be performed efficiently.

  Furthermore, in the present invention, an auxiliary hot water supply heat source device having a function of supplying hot water created by heating water to the hot water supply destination is provided together with the cogeneration hot water supply heat source device, and the hot water storage of the cogeneration hot water supply heat source device The passage of hot water supplied from the tank is connected to the water supply introduction port of the auxiliary hot water supply heat source device. According to the configuration in which hot water is supplied to the hot water supply destination via the hot water supply passage from the hot water storage tank of the cogeneration hot water supply heat source device and the water supply inlet of the auxiliary hot water supply heat source device, a complex system with a simple system configuration can be obtained. It is possible to form hot water efficiently.

  Furthermore, in the present invention, according to the configuration in which the power generation device is a fuel cell that reacts hydrogen and oxygen to generate electricity, by using the power generation device as a fuel cell, a substance that adversely affects the environment is not discharged. Since the cogeneration hot water supply heat source device can be operated, an environmentally friendly hot water supply heat source system can be constructed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 2 shows a system configuration of an embodiment of a hot water supply heat source system according to the present invention, and FIG. 1 shows a control configuration thereof. As shown in FIG. 2, the present embodiment heats the water of the cogeneration hot water supply heat source device 3 that supplies the hot water accumulated in the hot water storage tank 2 to the hot water supply destination using the exhaust heat of the power generation device 1, and the water that passes through the water. This is a combined hot water supply system with an auxiliary hot water supply heat source device 4 for supplying hot water prepared in this manner to a hot water supply destination. A plurality of hot water supply destinations including a bathtub are provided. In addition, in the cogeneration hot water supply heat source apparatus 3, the overlapping description about the same structure as FIG. 8 is abbreviate | omitted or simplified.

The power generator 1 applied in the present embodiment is formed by a fuel cell such as a polymer electrolyte fuel cell (PEFC), for example, and is extracted from a fuel such as city gas by the reverse reaction of water electrolysis. This is a device for generating electricity by reacting the generated hydrogen 2H ⁺ with oxygen (1/2) O ₂ in the air.

  The system having the cogeneration hot water supply heat source device 3 is attracting attention as a system capable of producing an energy saving effect. In the present embodiment, the power generation device 1 is particularly formed by a fuel cell, thereby adversely affecting the environment. The cogeneration hot water supply heat source device 3 can be operated without discharging the substance to be given, and an environment-friendly hot water supply heat source system can be constructed.

  In the present embodiment, the capacity of the hot water tank 2 is, for example, 200 L, and the hot water tank 2 is provided with hot water temperature detection sensors 101 to 111 in the hot water tank at intervals. The drain valve 52 provided on the lower side of the hot water tank 2 is a drain electromagnetic valve 52.

  Moreover, in this embodiment, when the heat storage amount of hot water in the hot water tank 2 or the value corresponding to the heat storage amount is less than a predetermined power generation permission limit threshold value, power generation by the power generator 1 is possible. When the heat storage amount of hot water or the value corresponding to the heat storage amount is equal to or greater than the power generation disapproval limit threshold, power generation by the power generation device 1 is stopped.

  In the present embodiment, the power generation permission limit threshold and the power generation disapproval limit threshold are the same, and all the hot water in the hot water tank 2 has a value of 40 degrees or more. The threshold is used. Note that the power generation permission limit threshold value and the power generation non-permission limit threshold value are not limited to these values and may be set as appropriate, and may be different from each other.

  In the present embodiment example, the cogeneration hot water supply heat source device 3 and the auxiliary hot water supply heat source device 4 are connected to the hot water mixing unit 10 via the connection passage 45, and the outlet side of the hot water supply path 12 of the cogeneration hot water supply heat source device 3. Is provided with a flow rate sensor 70 for detecting the flow rate of hot water fed from the hot water supply passage 12. Further, a branch passage 11 b of the water supply passage 11 is connected to the hot water / mixing unit 10. A water supply temperature sensor 112 is provided in the water supply path 11.

  The hot water mixing unit 10 is supplied with water from the water supply path 11, a hot water on / off valve 54 that opens and closes the hot water supply path 12, a hot water proportional valve 55 that variably controls the flow rate of hot water supplied from the hot water supply path 12 according to the valve opening degree. And a flow rate sensor 71 provided on the inlet side of the connection passage 45. The hot water on / off valve 54 is formed by an electromagnetic valve, and the hot water proportional valves 55 and 56 are formed by a gear motor. A hot water temperature detection sensor 120 is provided on the outlet side of the hot water supply passage 12, and a hot water temperature detection sensor 118 is provided on the inlet side of the connection passage 45.

  The auxiliary hot water supply heat source device 4 is a device having a function of supplying hot water prepared by heating water flowing through water to a hot water supply destination, and has a hot water heater 5 (5a, 5b). The water heater 5 (5a, 5b) has combustion chambers 23, 24, respectively. In the combustion chamber 23 of the water heater 5 a, a burner 6, a combustion fan 8 that supplies and exhausts combustion of the burner 6, and a hot water supply heat exchanger 19 that is heated by the combustion of the burner 6 are provided. Further, in the combustion chamber 24 of the water heater 5b, a burner 7, a combustion fan 9 for supplying and exhausting combustion of the burner 7, and a reheating heat exchanger 25 heated by the combustion of the burner 7 are provided. Yes.

  Gas pipes 21 and 22 for supplying fuel to the burners 6 and 7 are connected to the burners 6 and 7, and these gas pipes 21 and 22 are branched from the gas pipe 20. The gas pipe 20 is provided with a gas on / off valve 80, the gas pipe 21 has a gas proportional valve 86 and gas on / off valves 81, 82, and 83, and the gas pipe 22 has a gas proportional valve 87 and a gas on the gas pipe 22. On-off valves 84 and 85 are interposed, respectively. These valves 80 to 87 are all formed by electromagnetic valves, the gas on-off valves 80 to 85 control the fuel supply / stop to the corresponding burners 6 and 7, and the gas proportional valves 86 and 87 correspond to the corresponding valves. The amount of fuel supplied to the burners 6 and 7 is controlled by the valve opening.

  A water supply introduction passage 18 is provided on the inlet side of the hot water heat exchanger 19, and this water supply introduction passage 18 is connected to the connection passage 45. A flow rate sensor 73 that detects the amount of hot water flowing through the water supply introduction passage 18 is provided on the inlet side of the water supply introduction passage 18.

  A hot water supply passage 26 is provided on the outlet side of the hot water supply heat exchanger 19, and the front end side of the hot water supply passage 26 is connected to the water supply introduction passage 18 via a branch passage 90 and a hot water passage switching valve 58. In the hot water supply passage 26, a hot water temperature detection sensor 113 is provided on the downstream side of the branch portion of the branch passage 90, and a hot water temperature detection sensor 114 is provided on the hot water supply heat exchanger 19 side. An overheat prevention device (thermostat) 115 is provided in the middle of the hot water supply heat exchanger 19.

  One end side of the forward pipe 91 is connected to one end side of the reheating heat exchanger 25, and the other end side of the forward pipe 91 is connected to the bathtub 126 via a circulation fitting 97. Further, a passage 93 is connected to the other end side of the reheating heat exchanger 25, and the other end side of the passage 93 is connected to a discharge port of the circulation pump 94. One end side of the return pipe 96 is connected to the suction port of the circulation pump 94, and the other end side of the return pipe 96 is connected to the bathtub 126 through the circulation fitting 97. The return pipe 96 is provided with a bathtub hot water temperature detection sensor 127.

  Reheating for recirculating hot water in the bathtub by circulating the hot water in the bathtub 126 by driving the circulation pump 94 by the outgoing pipe 91, the reheating heat exchanger 25, the passage 93, the circulation pump 94, and the return pipe 96. A circulation passage 99 is formed.

Also, the hot water supply passage 26 is provided downstream of the formation portion of the branch passage 90 and the arrangement portion of the tapping hot water temperature detection sensor 113, and the pouring introduction passage for bath as a hot water supply passage from the hot water supply source to the bathtub 126. 95 is connected, and the bath pouring introduction passage 95 is connected to the passage 93. A hot water on / off valve 59, a check valve 62 , a flow rate sensor 74, and a water level sensor 125 are provided in the bath pouring introduction passage 95. The water level sensor 125 detects the water level of the bathtub 126 by water pressure.

  A hot water filling passage is constituted by the passage from the hot water supply heat exchanger 19 through the hot water supply passage 26, the bath pouring introduction passage 95, the passage 93, the reheating heat exchanger 25, and the outgoing pipe 91 to the bathtub 126 in this order. ing.

  In FIG. 2, a hot water supply place such as a kitchen and a bathtub 126 are shown as hot water supply destinations, but various hot water supply systems that supply hot water to appropriate hot water supply destinations such as a bathroom shower can be configured.

  The system configuration of this embodiment is configured as described above. Next, the control configuration of the control device 44 shown in FIG. 1 will be described. The control device 44 includes a heat storage amount detection unit 35, a selection control unit 36, a combustion control unit 42, a clock mechanism 41, a hot water supply usage amount data detection unit 37, a hot water supply usage amount related data learning storage unit 38, and a power generator operating state detection unit 47. , A power usage amount data detection unit 39, a power usage amount related data learning storage unit 43, an automatic hot water filling control unit 40, a hot water supply start timing delay control unit 48, and a hot water supply start timing advance control unit 49.

  The heat storage amount detection part 35 calculates | requires the value corresponding to a heat storage amount (heat storage amount of the hot water in the hot water tank 2) or a heat storage amount based on the monitor information regarding the heat storage amount detection of the operation status of the cogeneration hot water supply heat source device 3. is there. The monitor information is, for example, information on the temperature detected by the hot water temperature detection sensors 101 to 111 in the hot water tank, information on the operating time of the power generator 1, and the like. The operating time of the power generation device 1 can be obtained from, for example, on / off information of the power generation device 1 and time information obtained from the timepiece mechanism 41. In addition, if a flow sensor is provided in the exhaust hot water introduction passage 14, information on the operation time of the power generation apparatus 1 can be obtained from information on the flow sensor.

  Here, an example of how to obtain a value corresponding to the heat storage amount of hot water in the hot water tank 2 is shown. For example, as the monitor information, the heat storage amount detection unit 35 takes in information on the temperature detected by the hot water temperature detection sensors 101 to 111 in the hot water tank, and the temperature detected by the hot water temperature detection sensor 105 in the hot water tank is about 60 ° C. Assuming that the temperature detected by the water temperature detection sensor 106 is about 20 ° C., the boundary line between the water and hot water in the hot water tank 2 as shown by the broken line A in FIG. 8 indicates the hot water temperature detection sensor 105 in the hot water tank and the hot water tank. It is determined that about 80 L of hot water at about 60 ° C. is accumulated in the hot water storage tank 2 between the internal hot water temperature detection sensor 106.

  Moreover, if the amount of hot water accumulated per unit time due to the operation of the power generation device 1 is given in advance to the heat storage amount detection unit 35 and this amount is 2 L per minute, for example, the time of the power generation device 1 obtained from the clock mechanism 41 When the information has passed for 30 minutes, the heat storage amount detection unit 35 determines that 60 L of hot water at about 60 ° C. is accumulated in the hot water storage tank 2. In this manner, the heat storage amount detection unit 35 can detect the amount of hot water in the hot water tank 2 from time to time based on the operating time information of the power generation device 1 obtained from the timepiece mechanism 41.

  Further, the heat storage amount detection unit 35 calculates the amount of hot water used in the hot water storage tank 2 from, for example, detection data of the flow rate sensor 70 and subtracts this value from the amount of hot water stored in the hot water storage tank 2, thereby The amount of hot water remaining in the tank 2 can be detected every moment, and the temperature of the hot water accumulated in the hot water storage tank 2 can be estimated from the elapsed time since the accumulation of hot water.

  The selection control unit 36 is a hot water supply heat source selection control unit. For example, the detected heat storage value of the heat storage amount obtained by the heat storage amount detection unit 35 or a value corresponding to the heat storage amount is used for hot water supply heat source selection. When the temperature falls below a predetermined lower threshold, the hot water supply source is switched from the hot water storage tank 2 to the auxiliary hot water supply heat source device 4 to perform hot water supply, and the stored heat amount of hot water in the hot water tank 2 obtained by the heat storage amount detection unit 35 or When the value corresponding to the amount of stored heat rises above a predetermined upper threshold value for hot water supply heat source selection, the hot water supply heat source is switched from the auxiliary hot water supply heat source device 4 to the hot water storage tank 2 of the cogeneration hot water supply heat source device 3 for hot water supply. Note that the selection control of the hot water supply heat source by the selection control unit 36 is not particularly limited and is appropriately set.

  In the present embodiment, a hot water supply passage (hot water supply path 12) fed from the hot water storage tank 2 of the cogeneration hot water supply heat source device 3 is communicated with a water supply inlet of the auxiliary hot water supply heat source device 4. When only hot water is used as a heat source and hot water of a set temperature or higher is sent from the hot water storage tank 2, the hot water of the hot water storage tank 2 is supplied to the hot water supply destination via the auxiliary hot water supply heat source device 4 in a non-heated drive state. Yes.

  That is, when hot water is supplied using only hot water in the hot water tank 2 as a heat source, the selection control unit 36 opens the hot water on / off valve 54 and adjusts the valve opening amounts of the hot water proportional valves 55 and 56 as appropriate. Hot water is mixed with water supplied from the water supply passage 11 via the branch passage 11b and sent to the auxiliary hot water supply heat source device 4 in a non-heated drive state as hot water at a set temperature. Then, for example, hot water having a set temperature introduced into the auxiliary hot water supply heat source device 4 is switched to the hot water path switching valve 58 to supply hot water to an appropriate hot water supply destination such as a kitchen through the branch passage 90, or the hot water open / close valve 59 is opened. Hot water filling is performed through the hot water introduction passage 95 and the hot water filling passage.

  Further, when the hot water supply heat source is switched to the auxiliary hot water supply heat source device 4, the selection control unit 36 closes the hot water on / off valve 54, for example, and supplies water introduced into the hot water mixing unit 10 from the water supply passage 11 through the branch passage 11 b. The hot water heater 5a is introduced through the connection passage 45, and a command is given to the combustion control unit 42 of the hot water heater 5a, and the hot water heater 5a is operated to supply hot water by the auxiliary hot water supply heat source device 4.

  When the selection control unit 36 selects the hot water supply operation from the auxiliary hot water supply heat source device 4, the combustion control unit 42 opens and closes the gas while referring to the detected temperature of the tapping hot water temperature detection sensor 113 and the detected flow rate of the flow rate sensor 73. At least one of the valves 81, 82, 83 is opened, the amount of gas supplied to the burner 6 is adjusted by adjusting the opening amount of the gas proportional valve 86, the air volume of the combustion fan 8 is adjusted, and hot water supply heat exchange Combustion control of the burner 6 is performed so that the hot water discharged through the vessel 19 becomes a hot water having a set temperature. For simplification of the drawing, in FIG. 1, an arrow directed from the flow sensor 73 to the combustion control unit 42 is omitted.

  The hot water supply usage data detection unit 37 uses the flow rate sensor 73 to store hot water usage data of the hot water heat source system for each time on the time axis for each set period with an integer multiple of one day (an integer multiple of 1) as a cycle. , 74 and the time information obtained from the clock mechanism 41, respectively. The information on the hot water flow rate obtained from the flow sensor 73 is information on the hot water flow rate used in the entire system, and the information on the hot water flow rate obtained from the flow sensor 74 is information on the hot water flow rate supplied to the bathtub 126. The hot water supply usage amount data detection unit 37 adds the detection data to the hot water supply usage amount related data learning storage unit 38.

  The hot water use amount-related data learning storage unit 38 accumulates the detection data detected by the hot water use amount data detection unit 37, and based on the accumulated data, the time on the time axis for each set period and the hot water use amount are stored. The relationship is learned and stored as relationship data.

  In the present embodiment, as described above, the information on the hot water flow rate used in the entire hot water source system is obtained from the hot water flow rate information obtained from the flow sensor 73 and the hot water flow rate information supplied to the bathtub 126 is information. Can be obtained from the hot water supply flow rate information obtained from the flow rate sensor 74.

  Therefore, in the present embodiment, the hot water usage amount-related data learning storage unit 38 is based on the accumulated data of the detection data detected by the hot water usage amount data detection unit 37 and the time on the time axis for each set period and the entire system. The relationship between the amount of hot water used and the amount of hot water used is learned and stored as relationship data, and the relationship between the time on the time axis for each set period and the amount of hot water used for the bathtub 126 is learned and stored as relationship data. Note that FIG. 3A shows an example of hot water consumption usage related data for the entire system.

  The power generation device operation status detection unit 47 detects the operation status of the power generation device 1 and adds this detection signal to the power consumption data detection unit 39. As described above, when the heat storage amount detection unit 35 detects the heat storage amount of the hot water tank 2 based on the operation state of the power generation device 1, the detection information of the power generation device operation state detection unit 47 is used as the heat storage amount detection unit 35. May take in.

  The power usage amount data detection unit 39 is configured for each set period based on information obtained from the power generation device operation status detection unit 47 (detection information of the power generation device operation status detection unit 47) and time information obtained from the clock mechanism 41. The data of the electric power consumption using the power generator 1 for each time on the time axis is detected. Then, this detected data is added to the power usage amount related data learning storage unit 43.

  The power usage amount related data learning storage unit 43 accumulates the detection data detected by the power usage amount data detection unit 39, and based on the accumulated data, the time on the time axis for each set period and the power usage amount used by the power generator. Is learned and stored as power usage amount relationship data. Note that FIG. 3B shows an example of the power usage amount related data.

  In the present embodiment, the hot water supply start timing delay control unit 48 has a heat storage amount or a value corresponding to the heat storage amount for determining whether or not the heat storage can be used when there is a hot water supply demand equal to or greater than a predetermined hot water supply amount. It is given as a heat storage utilization threshold.

  The hot water supply start timing delay control unit 48 is configured to use the power usage amount related data when there is a hot water supply demand equal to or greater than the set hot water supply amount when the detected heat storage value detected by the heat storage amount detection unit 35 is less than the heat storage use threshold. And whether or not the detected heat storage value reaches the heat storage utilization threshold value or more within a predetermined set time with reference to the hot water use amount relation data.

  When the hot water supply start timing delay control unit 48 predicts that the detected heat storage value reaches the heat storage utilization threshold value or more within the set time, the hot water storage start timing delay control unit 48 until the detected heat storage value reaches the heat storage utilization threshold value or more. The start of hot water supply exceeding the set hot water supply amount using the tank 2 as the hot water supply heat source is delayed.

  In this embodiment, the hot water supply that delays the start timing of hot water supply is an automatic hot water supply that automatically fills the bathtub 126. The hot water supply start timing delay control unit 48 takes in the value of the hot water filling start time from the automatic hot water filling control unit 40, and adds a hot water supply start timing delay signal to the automatic hot water filling control unit 40 when delaying the hot water filling start by the above determination. .

  For example, when the bathing time is set as a timer by an operation unit (not shown) such as a remote controller, the hot water filling control unit 40 sets the hot water filling start time in a reverse calculation corresponding to the bathing time set in the timer. Hot water filling to the bathtub 126 is started at the set time (scheduled hot water start scheduled time). However, when a hot water supply start timing delay signal is applied from the hot water supply start timing delay control unit 48, the hot water start time to the bathtub 126 is delayed.

  That is, when the hot water supply start timing delay control unit 48 is controlled when the detected heat storage value is less than the heat storage use threshold at the scheduled hot water start time, the hot water control unit 40 responds to this control. The hot water filling start time from the hot water tank 22 to the bathtub 126 is delayed.

  In addition, for example, an operation unit that cancels the control of the hot water supply start timing delay control unit 48 is provided, and when the user of the hot water supply device does not want to delay the start of hot water filling, this operation unit is operated to use heat storage. Instead, the hot water filling may be performed from the auxiliary hot water supply heat source device 4.

  The hot water supply start timing advancement control unit 49 refers to the detected heat storage value, the power usage amount relationship data, and the hot water usage amount relationship data, and when it is predicted that there is a power demand that is equal to or higher than a preset power amount. When it is predicted that the detected heat storage value is equal to or greater than the power generation disapproval limit threshold value, it is determined whether or not there is a hot water supply demand from the hot water storage tank within a predetermined set time. And when it is predicted that there is a hot water supply demand within the set time, the hot water start timing is made earlier than the predicted hot water start timing before the detected heat storage value becomes equal to or higher than the power generation disapproval limit threshold. Start hot water supply.

  In this embodiment, the hot water supply that the hot water supply start timing advancement control unit 49 accelerates the start of hot water supply also includes hot water supply to the bathtub 126, and the hot water supply start timing advancement control unit 49 includes the automatic hot water supply control unit 49. When the value of the hot water filling start time is taken in from 40, and when the hot water filling start time is advanced by the above judgment, a hot water supply start timing advance signal is added to the automatic hot water filling control unit 40.

  When a hot water supply start timing advance signal is applied from the hot water supply start timing advance control unit 49, the automatic hot water fill control unit 40 advances the hot water start time according to the control of the hot water start timing advance control unit 49, and the detected heat storage value Before the power generation disapproval limit threshold is exceeded, hot water supply to the bathtub 126 is started using the hot water storage tank 22 as a hot water supply heat source.

  The present embodiment is configured as described above, hot water supply or hot water filling is performed from the hot water supply heat source selected by the selection control unit 36, and the time axis in the set cycle is performed by the hot water use amount data detection unit 37. The relationship between the above time and the amount of hot water used is detected, and further, based on the accumulated data of the detection data of the hot water usage data detector 37, the hot water usage amount relation data learning storage unit 38 sets the time axis for each set period. The relationship between the above time and the amount of hot water used is learned and stored as related data.

  Further, in the present embodiment example, based on the detection information of the power generator operating state detection unit 47, the power usage amount data detection unit 39 detects the power usage amount data for each time on the time axis for each set period. Based on the accumulated data of the detected data, the power usage amount relationship data learning storage unit 43 determines that the relationship between the time on the time axis for each set period and the power usage amount using the power generator 1 is the power usage amount relationship data. As learned and memorized.

  The hot water supply start timing delay control unit 48 and the hot water supply start timing advance control unit 49 refer to the hot water use amount relation data, the electric power use amount relation data, and the detected heat storage value detected by the heat storage amount detection unit 35. Then, control is performed to delay or speed up the start timing of the automatic filling operation.

  That is, the automatic hot water filling control unit 40 sets the start timing of automatic hot water filling corresponding to the bathing time set by an operation unit (not shown) such as a remote controller, and the detected heat storage value is set at the set timing. When the temperature is less than the heat storage use threshold, the hot water supply start timing delay control unit 48 refers to the power usage amount relation data and the hot water use amount relation data, and the detected heat storage value is not less than the heat storage use threshold within a predetermined time. Determine whether or not.

  When the detected heat storage value is predicted to reach the heat storage utilization threshold value or more within the set time, the automatic hot water filling start timing is delayed until the detected heat storage value reaches the heat storage utilization threshold value or more.

  The hot water supply start timing advance control unit 49 is predicted that the detected heat storage value reaches the power generation disapproval limit threshold or more when it is predicted that there is a power demand equal to or greater than the set power amount within a predetermined set time. Sometimes, it is determined whether or not there is an automatic filling start timing set by the automatic filling control unit 40 within a set time, and when it is determined that there is an automatic filling start timing within the set time, The hot water filling start timing is set earlier than the automatic hot water filling start timing set by the hot water filling control unit 40, and the hot water supply is started before the detected heat storage value becomes equal to or higher than the power generation disapproval limit threshold.

  That is, in the present embodiment example, the hot water supply start timing delay control unit 48 delays the automatic hot water filling timing, whereby the automatic hot water hot water supply using the hot water storage tank 2 as the hot water supply heat source can be efficiently performed, and Since the hot water supply start timing advance control unit 49 advances the timing of automatic hot water filling, it is possible to increase the rate of operation of the power generation apparatus when there is a power demand exceeding the set power amount, so that efficient use is possible. A hot water supply heat source system can be realized.

  Further, according to this embodiment, the hot water supply passage (hot water supply path 12) fed from the hot water storage tank 2 of the cogeneration hot water supply heat source device 3 is communicated with the water supply inlet of the auxiliary hot water supply heat source device 4. When hot water is supplied using only hot water as the heat source, the hot water in the hot water storage tank 2 is supplied to the hot water supply destination via the auxiliary hot water supply heat source device 4 in a non-heated drive state, so that water is supplied from the hot water storage tank 2 of the cogeneration hot water supply heat source apparatus 3. By connecting the hot water supply passage to the hot water supply inlet of the auxiliary hot water supply heat source device 4, a complex hot water supply heat source system with a simple system configuration can be formed, and hot water can be supplied efficiently.

  In addition, this invention is not limited to the said embodiment, It can take various aspects. For example, in the above embodiment, the hot water supply start timing delay control unit 48 and the hot water supply start timing advance control unit 49 are provided, but any one of these control units can be omitted.

  Moreover, the hot water supply heat source system of this invention can apply a system structure as shown, for example in FIG. In this system configuration, a reheating heat exchanger 25 formed by a water-water heat exchanger is interposed in a recirculation circulation line 99 for circulating hot water in the bathtub 126, and The reheating heat exchanger 25 heats the hot water passing through the recirculation circulation line 99 using the heat of the hot water in the hot water reserving tank 2 circulating through the hot water recirculation line 89 for circulating hot water.

  In this system, for example, as shown in FIG. 5, an automatic replenishment execution unit 77 is provided, and the automatic replenishment execution unit 77 periodically performs the hot water replenishment tank 2 within a predetermined heat retention time after the completion of automatic hot water filling. The hot water in the bathtub 126 can be circulated through the hot water tank hot water circulation line 89 and the hot water in the bathtub 126 can be reheated by the reheating heat exchanger 25.

  Therefore, in this system, the hot water supply start timing for the automatic reheating may be delayed by the hot water supply start timing delay control unit 48 or may be advanced by the hot water start timing advance control unit 49.

  Furthermore, hot water supply that delays the start timing of hot water supply by the hot water supply start timing delay control unit 48 or advances the start timing of hot water supply by the hot water supply start timing advancement control unit 49 is used for automatic hot water filling and automatic chasing as described above. It is not limited to hot water supply, and appropriate hot water supply can be set. In addition, automatic hot water supply has a large amount of hot water to supply, and even if the hot water supply end timing slightly deviates, the user does not feel inconvenience. Therefore, the hot water supply start timing delay control unit 48 and the hot water supply start timing advance control unit 49 This is suitable as hot water supply for controlling the hot water supply start timing.

  Regarding the hot water supply start timing delay, for example, when the set time is 5 minutes and the delay time is predicted to exceed 5 minutes, it is determined that the hot water end timing is too shifted and the user feels inconvenience, and is insufficient. You may make it cover a minute with an auxiliary hot-water supply heat source apparatus (hot-water heater).

  In this case, for example, normally, the filling starts from the scheduled filling start time calculated backward from the designated bathing time (set by the timer), and 5 minutes before the bathing time, “You can take a bath in about 5 minutes.” When voice guidance is given and the voice guidance is given as “You can take a bath” at the bathing time, when the hot water supply start timing is delayed, the hot water is filled after the set time (5 minutes) from the scheduled start time. , And a voice saying "You can take a bath in approximately 5 minutes" about the specified bathing time or 1 minute before the bathing time ("You can take a bath" 5 minutes after the specified bathing time.) It is more preferable that the user is not worried about whether the system has a problem by notifying the user that the hot water supply end timing is slightly shifted by sending a voice guidance.

  In addition, when the hot water supply start timing is advanced, for example, even if the hot water filling is finished 20 minutes ago, an announcement that “you can take a bath in about 5 minutes” 5 minutes before the bathing time may be played. .

  Furthermore, in the above embodiment, the setting cycle is one day, but the setting cycle is not limited to one day, and may be one week, and is appropriately set to an integer of 1 day × 1 or more.

  Furthermore, in the above embodiment, the power generation device 1 of the cogeneration hot water supply heat source device 3 is a fuel cell. However, a gas turbine power generation device, a diesel engine power generation device, or the like can be applied to the power generation device 1, and Heat storage in the hot water storage tank 2 may be performed using exhaust heat, and the fuel and configuration of the power generation device 1 are not particularly limited, and are appropriately set.

  Moreover, in the said embodiment, between the hot water storage tank 2 of the cogeneration hot-water supply heat source apparatus 3, and the electric power generating apparatus 1, the water in the hot water storage tank 2 is heated into hot water using the exhaust heat of the electric power generating apparatus 1. Although the means is provided, as shown in FIGS. 6A and 6B, the means for heating the water in the hot water storage tank 2 using the heat of the exhaust heat absorbing fluid of the power generation apparatus 1 to make hot water is provided. Then, the hot water formed by the means may be accumulated in the hot water tank 2.

  In the configuration shown in FIG. 6A, a circulation line 66 for circulating the exhaust heat absorbing fluid of the power generator 1 is passed through the hot water storage tank 2, and heat is exchanged between the exhaust heat absorbing fluid and the water in the hot water storage tank 2. To make the water in the hot water tank 2 into hot water. Further, at this time, the exhaust heat absorbing fluid is cooled by giving the heat to the water in the hot water tank 2, and the exhaust heat absorbing fluid is sent to the power generator 1 as a cooling fluid.

  6B is a circulation pipe in which a heat exchange member 67 formed of, for example, a copper plate or the like is provided between the hot water tank 2 and the power generation device 1 so that the exhaust heat absorbing fluid of the power generation device 1 is circulated. The passage 66 is passed through the heat exchange member 67, and the heat exchange member 67 is provided with a circulation pipe 68 for circulating the water in the hot water tank 2, and the heat exhausted through the circulation pipe 66 through the heat exchange member 67. Heat exchange is performed between the absorbing fluid and the water passing through the circulation line 68. That is, the heat of the exhaust heat absorbing fluid is given to the water in the hot water storage tank 2 passing through the circulation pipe 68 through the heat exchange member 67 to turn the water in the hot water storage tank 2 into hot water. It cools to make a cooling fluid.

  In the above embodiment, the water supply channel 11 is connected to the water supply introduction passage 18 of the auxiliary hot water supply heat source device 4 via the hot water mixing unit 10, but as shown in FIG. It may be connected to the hot water supply passage 26 side through the valve 69, or as shown in FIG. 7B, the water supply passage 11 is connected to both the water supply introduction passage 18 and the hot water supply passage 26 through the valve 69. May be.

  Further, in the above embodiment, the hot water supply path 12 of the hot water storage tank 2 of the cogeneration hot water supply heat source device 3 is communicated with the water supply inlet of the auxiliary hot water supply heat source device 4 via the hot water mixing unit 10 and the connection passage 45. In the invention, the cogeneration hot water supply heat source device 3 and the auxiliary hot water supply heat source device 4 may be provided separately and provided side by side.

  Furthermore, in the said embodiment, although it was set as the composite hot water supply system which has the cogeneration hot water supply heat source device 3 and the auxiliary hot water supply heat source device 4, it is good also as a hot water supply system which abbreviate | omitted the auxiliary hot water supply heat source device 4. In this case, for example, a configuration unique to the combined hot water supply system such as the selection control unit 36 is omitted.

It is a principal part block diagram which shows the control structure of one Example of the hot water supply heat source system which concerns on this invention with a block diagram. It is a principal part block diagram which shows typically the system configuration | structure of one Example of the hot water supply heat source system which concerns on this invention. It is a graph which shows the usage-amount data example of the hot water supply and electric power which are learned and memorize | stored in the said embodiment. It is principal part explanatory drawing which shows typically the structure of the cogeneration hot-water supply heat source apparatus applied to the other embodiment of the hot-water supply heat source system which concerns on this invention. It is explanatory drawing which shows the example of a control structure applied to the hot water supply heat source system of FIG. 4 with a block diagram. It is explanatory drawing which shows the example of a connection of the electric power generating apparatus and hot water storage tank in the other embodiment of the hot water supply heat source system which concerns on this invention. It is principal part explanatory drawing which shows typically the connection structure of the hot water supply heat source system applied to other example embodiments of the present invention and the water supply path of the cogeneration hot water supply heat source device. It is explanatory drawing which shows typically the structural example and its operation | movement of a cogeneration hot-water supply heat source apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power generator 2 Hot water storage tank 3 Cogeneration hot water supply heat source device 4 Auxiliary hot water supply heat source device 5 Hot water heater 35 Heat storage amount detection part 36 Selection control part 37 Hot water use amount data detection part 38 Hot water use amount related data learning memory | storage part 39 Electric power use amount data Detection unit 40 Automatic hot water filling control unit 41 Clock mechanism 42 Combustion control unit 43 Electric power consumption related data learning storage unit 44 Controller 48 Hot water supply start timing delay control unit 49 Hot water supply start timing advance control unit 70, 73, 74 Flow rate sensor 77 Automatic Reheating execution unit 101-111 Hot water temperature sensor in hot water tank

Claims (7)

In a hot water supply heat source system comprising a cogeneration hot water supply heat source device for supplying hot water to the hot water supply destination, the heat stored in the hot water storage tank using the waste heat of the power generator is stored . From the heat storage amount or a value corresponding to the heat storage amount based on the monitor information related to the heat storage amount detection, from the power generation device operation status detection unit for detecting the operation status of the power generation device, from the power generation device operation status detection unit Based on the information obtained and the time information obtained from the clock mechanism, power consumption data for each time on the time axis is detected for each set period with an integer multiple of one day (an integer multiple of 1 or more). A power usage data detection unit that performs detection, and stores the detection data detected by the power usage data detection unit, and based on the stored data, a time on the time axis for each set period A power usage amount relationship data learning storage unit that learns and stores a relationship with the power usage amount used by the electric device as power usage amount relationship data, and a hot water supply amount of the hot water supply system for each time on the time axis for each set period Hot water use amount data detection unit for detecting data based on hot water flow rate information obtained from a flow sensor and time information obtained from a clock mechanism, and detection data detected by the hot water use amount data detection unit are accumulated to A hot water supply usage amount relationship data learning storage unit that learns and stores the relationship between the time on the time axis and the hot water supply usage amount for each set period as hot water usage amount relationship data based on accumulated data; When there is a demand for hot water supply greater than or equal to the amount, a heat storage amount for determining whether or not heat storage can be used or a value corresponding to the heat storage amount is given as a heat storage use threshold, and the heat storage amount detection When there is a hot water supply demand equal to or greater than the set hot water supply amount when either one of the heat storage amount detected by the value and the value corresponding to the heat storage amount is less than the heat storage utilization threshold, the power usage amount relational data When the detected heat storage value reaches the heat storage utilization threshold value or more within a preset time with reference to the hot water use amount relation data, the hot water storage tank is used as a hot water supply source until the detected heat storage value reaches the heat storage utilization threshold value or more. A hot water supply heat source system is provided, wherein a hot water supply start timing delay control unit is provided to delay the start of hot water supply exceeding the set hot water supply amount. In a hot water supply heat source system having a cogeneration hot water supply heat source device that supplies hot water stored in the hot water storage tank using the waste heat of the power generation device to the hot water storage tank, a value corresponding to the heat storage amount or the heat storage amount Can be generated by the power generator when the power generation is less than a predetermined power generation permission limit threshold, and power generation by the power generator stops when the heat storage amount or the value corresponding to the heat storage amount is greater than or equal to the power generation disapproval limit threshold. A heat storage amount detection unit for obtaining a heat storage amount or a value corresponding to the heat storage amount based on monitor information relating to a heat storage amount detection of an operation state of the cogeneration hot water supply heat source device, and a power generation device operation for detecting the operation state of the power generation device Based on the status detection unit, the information obtained from the power generator operating status detection unit and the time information obtained from the clock mechanism, an integer multiple of one day (an integer of 1 or more) Power consumption data detection unit for detecting power usage data for each time on the time axis for each set period with a period of a period), and the detection data detected by the power usage data detection unit A power usage amount relationship data learning storage unit that learns and stores the relationship between the time on the time axis for each set cycle and the power usage amount used by the power generation device as power usage amount relationship data based on accumulated data, and for each set cycle A hot water use amount data detection unit for detecting hot water use amount data of the hot water supply system for each time on the time axis based on information on a hot water flow rate obtained from a flow sensor and time information obtained from a clock mechanism, and the hot water supply The detection data detected by the usage amount data detection unit is accumulated, and based on the accumulated data, the relationship between the time on the time axis and the hot water usage amount for each set period is related to the hot water usage amount A hot water use amount-related data learning storage unit that learns and stores as a data, and the detected heat storage value of one of the heat storage amount detected by the heat storage amount detection unit and a value corresponding to the heat storage amount and the power use When it is predicted that the detected heat storage value will be equal to or greater than the power generation disapproval limit threshold when it is predicted that there is a power demand that is greater than or equal to a predetermined set power amount with reference to the amount related data and the hot water supply usage related data Determining whether or not there is a hot water supply demand from the hot water storage tank within a predetermined set time, and when it is predicted that there is a hot water supply demand within the set time, the hot water supply A hot water supply heat source system having a hot water supply start timing advance control unit that starts the hot water supply before the detected heat storage value becomes equal to or greater than the power generation disapproval limit threshold by advancing the start timing. Stem.   A hot water supply path is provided to supply hot water from a hot water tank to one or more hot water supply destinations including a bathtub, and hot water supply that delays or accelerates the start timing of hot water supply includes hot water that automatically fills the bathtub. The hot water supply heat source system according to claim 1 or 2, wherein   A reheating heat exchanger having a bathtub, a reheating circulation line for recirculating hot water in the bathtub through a heat exchanger, and a hot water reserving hot water circulation line for recirculating hot water in the hot water storage tank. The hot water in the hot water tank is configured to heat the hot water passing through the heat exchanger using the heat of the hot water when the hot water in the hot water tank is circulated through the hot water circulation line, and delays the start timing of hot water supply. The hot water supply for accelerating has hot water supply for automatic reheating, in which hot water in the hot water tank is circulated through a hot water tank hot water circulation pipe to replenish hot water in the bathtub. The hot water supply heat source system according to claim 2 or claim 3.   Means for heating the water in the hot water storage tank between the hot water storage tank of the cogeneration hot water supply heat source device and the power generation apparatus by using the exhaust heat of the power generation apparatus or the heat of the exhaust heat absorbing fluid of the power generation apparatus to make hot water The hot water formed by the means is accumulated in a hot water storage tank, and the hot water in the hot water storage tank is supplied to the hot water supply destination through the hot water supply passage. The hot water supply heat source system according to any one of 4.   An auxiliary hot water supply heat source device having a function of supplying hot water created by heating the water to the hot water supply destination is provided together with the cogeneration hot water supply heat source device, and water is supplied from the hot water storage tank of the cogeneration hot water supply heat source device. The hot water passage is connected to the water supply inlet of the auxiliary hot water supply heat source device, and when hot water is supplied using only the hot water in the hot water storage tank as the heat source, the hot water in the hot water storage tank is supplied via the auxiliary hot water supply heat source device in a non-heated drive state. The hot water supply heat source system according to any one of claims 1 to 5, wherein the hot water supply system is configured to supply hot water.   The hot water supply heat source system according to any one of claims 1 to 6, wherein the power generation device is a fuel cell that generates electricity by reacting hydrogen and oxygen.

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