JP4688430B2 - Hot water supply system - Google Patents

Description

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

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

  FIG. 6 shows an example of a cogeneration hot water supply heat source device. The cogeneration hot water supply heat source device 3 includes a power generator 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 for supplying hot water from the hot water storage tank 2 ( A hot water supply passage) 12 is provided. 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.

  Further, when the hot water in the hot water tank 2 is supplied to an appropriate hot water supply place through the hot water supply path 12, water is supplied into the hot water tank 2 from the water supply pipe 11 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 having a function of heating hot water and creating hot water. The auxiliary hot water supply heat source device normally includes a hot water heater, and 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.

  The combined hot water supply heat source system including the cogeneration hot water supply heat source device 3 and the auxiliary hot water supply heat source device connects, for example, the cogeneration hot water supply heat source device 3 and the auxiliary hot water supply heat source device 4 in parallel as shown in FIG. In this system, the three-way valve 99 can appropriately switch between hot water supply using hot water in the hot water storage tank 2 as a heat source and hot water supply using the auxiliary hot water supply heat source device 4 as a heat source.

JP2003-120998

  However, for example, in the hot water supply system including the cogeneration hot water supply heat source device 3 and the auxiliary hot water supply heat source device 4 as described above, when it is determined that the hot water storage tank 2 of the cogeneration hot water supply heat source device 3 has no heat storage, Since hot water supply is performed using the auxiliary hot water supply heat source device as the hot water supply heat source, for example, as shown in FIG. 5B, there is a problem that the temperature of the hot water varies, and the user feels uncomfortable.

  That is, in the above case, as shown in A of FIG. 5B, after the hot water of the set temperature is discharged from the hot water storage tank 2 of the cogeneration hot water supply heat source device 3, the heat storage of the hot water storage tank 2 is lost. When the three-way valve 99 is switched, the hot water temperature rapidly decreases at B in FIG. 5 (b), and then hot water having a set temperature heated by the auxiliary hot water supply heat source device as shown at C in FIG. 5 (b). As a result, the user becomes very uncomfortable.

  The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a hot water supply heat source system that can suppress fluctuations in tapping temperature and can be used comfortably by the user.

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 cogeneration hot water supply heat source device that supplies hot water accumulated in a hot water storage tank using the heat exchange with the exhaust heat of the power generator from the hot water storage tank to a hot water supply destination through a hot water supply path , An auxiliary hot water supply heat source device having a function of heating water to create hot water is provided, and an auxiliary hot water supply passage is provided for introducing the hot water created by the auxiliary hot water supply heat source device into the hot water storage tank of the cogeneration hot water supply heat source device. And an integer multiple of a day (based on information obtained from the power generator operating status detector and time information obtained from the clock mechanism) A power usage data detection unit for detecting power usage data using the power generation apparatus for each time on a time axis for each set period having a cycle of an integer multiple of 1 and the power usage data detection unit By Power usage amount relationship data learning that accumulates detected 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 generator as power usage amount relationship data based on the accumulated data The storage unit detects hot water use amount data from the hot water storage tank for each time on the time axis for each set period based on information on the hot water flow rate obtained from the flow sensor and time information obtained from the clock mechanism. The hot water use amount data detection unit and the detection data detected by the hot water use amount data detection unit are accumulated, and the relationship between the time on the time axis and the hot water use amount for each set period based on the accumulated data A hot water supply usage relationship data learning storage unit that learns and stores the relationship data, and refers to the power usage relationship data and the hot water usage relationship data, Calculated based the amount of accumulated water which is expected to be accumulated in the hot water storage tank with the work in the power consumption related data, the time the sheet hot water from the hot water tank is expected to be greater than the amount of the obtained accumulated water the storage water quantity and the difference in correspondence with the amounts of water and through the auxiliary water heating passage is introduced into the hot water tank from the auxiliary hot water supply heat source device auxiliary hot water introduction amount control of the feed hot water from the hot water tank to have a means, the auxiliary hot-water supply heat source apparatus form the excluded arrangement of the circuit of the heat exchange with the hot water of the power generator and the hot water storage tank, the auxiliary hot water supply passage heat and hot water of the power generator and the hot water storage tank The hot water produced by the auxiliary hot water supply heat source device is directly introduced into the hot water storage tank without going through the replacement circuit .

Further, in the second invention, in addition to the configuration of the first invention, the hot water supply passage is connected to an upper side of the hot water storage tank, and the auxiliary hot water supply passage is separated from the connection position of the hot water supply passage, and more than the hot water supply passage. Connected to the upper side of the hot water tank at a lower position, and a water supply pipe is connected to the lower side of the hot water tank. Hot water accumulated in the hot water tank using the exhaust heat of the power generator is from above the hot water tank. It is a means for solving the problem with a configuration in which water is supplied from the water supply pipe into the hot water storage tank by the amount of hot water in the hot water storage tank that is fed through the hot water supply path. Further, in addition to the configuration of the first or second invention, the third invention is such that the hot water storage tank of the cogeneration hot water supply heat source device feeds hot water in the hot water storage tank and the water supply path for introducing the water supply into the hot water storage tank. A hot water supply passage is provided, and a means for heating the water in the hot water tank to hot water using the exhaust heat of the power generator or the heat of the exhaust heat absorbing fluid of the power generator is provided between the hot water tank and the power generator. The hot water formed by the means is stored 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.

Further, a fourth invention is a means for solving the problems by having a configuration in which the power generation device is a fuel cell that reacts hydrogen and oxygen to generate electricity in addition to the configuration of the first, second, or third invention. It is said.

According to the present invention, the relationship between the time on the time axis for each set cycle and the power usage amount used by the power generator is used as the power usage amount relationship data, and the relationship between the time on the time axis for each set cycle and the hot water supply usage amount as hot water usage related data, respectively learned and stored, by referring to these data, a sheet hot water is large from the hot water tank than the amount of accumulated water which is expected to be accumulated in the hot water storage tank with the operation of the generator the expected time, since introducing a large amount of hot water so as to correspond to the difference between the supply amount of hot water from the amount and the hot water tank of the storage hot water from the auxiliary water heater heat source apparatus in the hot water storage tank, feeding the hot water tank An amount of hot water corresponding to the amount of hot water can be stored.

  Therefore, by supplying hot water from the hot water storage tank, hot water having a stable set temperature can always be discharged, and a hot water supply heat source system that can be used comfortably by the user can be realized.

  Further, 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 apparatus is accumulated in the hot water storage tank, and the hot water of the 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, 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 complex hot water supply system provided with an auxiliary hot water supply heat source device 4 having a function of supplying hot water prepared in this manner to a hot water supply destination. In addition, in the cogeneration hot water supply heat source apparatus 3, the overlapping description about the same structure as FIG. 6 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 storage tank 2 of the cogeneration hot water supply heat source device 3 is not particularly limited, but is 200 L, for example.

  The auxiliary hot water supply heat source device 4 has a hot water heater 5, and the hot water heater 5 has a combustion chamber 23. In the combustion chamber 23 of the water heater 5, 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.

  A gas pipe 22 for supplying fuel to each burner 6 is connected to the burner 6, and a gas proportional valve 86 and a gas on-off valve 81 are interposed in the gas pipe 22. These valves 81 and 86 are both formed by electromagnetic valves, the gas on-off valve 81 controls fuel supply / stop to the corresponding burner 6, and the gas proportional valve 86 supplies the amount of fuel supplied to the corresponding burner 6. 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 branch passage 11 a of the water supply passage 11. A water supply temperature detection sensor 112 and a pressure reducing check valve 64 are provided in the water supply passage 11, and a hot water on / off valve 24 formed by an electromagnetic valve and a hot water proportional valve 21 formed by a gear motor are provided in the branch passage 11a. . 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 temperature detection sensor 114 is provided on the outlet side of the hot water supply heat exchanger 19, and an overheat prevention device (thermostat) 115 is provided in the middle of the hot water supply heat exchanger 19.

  Between the auxiliary hot water supply heat source device 4 and the hot water storage tank 2, there is provided an auxiliary hot water supply passage 17 for introducing hot water created by the auxiliary hot water supply heat source device 4 into the hot water storage tank 2 of the cogeneration hot water supply heat source device 3. A hot water on / off valve 20 is provided in the auxiliary hot water supply passage 17.

In the present embodiment, hot water is accumulated in the hot water storage tank 2 by exhaust heat of the power generation apparatus 1, and hot water formed by driving the auxiliary hot water supply heat source apparatus 4 is accumulated in the hot water storage tank 2 via the auxiliary hot water supply passage 17. Yu savings tundish 2 stored in these hot water storage tank 2 to hot water from the hot water supply passage 12.

  A hot water / water mixing unit 10 is connected to the hot water supply passage 12, and the hot water / water mixing unit 10 is connected to the branch passage 11 b and the hot water supply passage 45 of the water supply passage 11. Hot water supply from the hot water supply path 12 is performed from the hot water supply passage 45 through the hot water mixing unit 10.

  The hot water mixing unit 10 is supplied with water from the hot water supply passage 11, a hot water on / off valve 54 that opens and closes the hot water supply passage 12, a hot water proportional valve 55 that variably controls the flow rate of hot water supplied from the hot water supply passage 12 according to the degree of opening. The hot water proportional valve 56 that variably controls the flow rate of water depending on the degree of valve opening, and the flow rate sensor 71 provided on the entrance side of the hot water passage 45 are provided. 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 hot water outlet passage 45.

  Next, the control configuration of this embodiment will be described. As shown in FIG. 1, the control device 44 includes a power generator operating state detection unit 47, a clock mechanism 41, a power usage amount data detection unit 39, a power usage amount relational data learning storage unit 43, a hot water supply usage amount data detection unit 37, It has a hot water supply amount-related data learning storage unit 38, an auxiliary hot water supply amount control means 48, a combustion control unit 42, and a hot water storage tank hot water supply temperature controller 40.

  The power generation device drive status detection unit 47 detects the operating status of the power generation device 1 and adds detection information to the power usage data detection unit 39.

  The power usage amount data detection unit 39 is an integer of one day 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. Data on the amount of electric power used using the power generation device 1 for each time on the time axis for each set period having a period of a multiple (an integer multiple of 1) 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. An example of the power usage amount relation data is shown in FIG.

The hot water use amount data detection unit 37 obtains hot water use amount data of the hot water supply system for each time on the time axis for each set period, information on the hot water flow rate obtained from the flow sensor 70, and time obtained from the clock mechanism 41. Detect based on information. 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. An example of this hot water consumption usage related data is shown in FIG.

The auxiliary hot water supply introduction amount control means 48 refers to the electric power usage amount relation data and the hot water supply usage amount relation data, and stores the accumulated hot water that is predicted to be accumulated in the hot water storage tank 2 as the power generator 1 is operated. the time at which the feeding hot water from the hot water storage tank 2 is expected to be greater than the amount, the accumulated difference in correspondence with the water quantity and feeding hot water from the hot water storage tank 2, amounts of water to the auxiliary water heating passage The auxiliary hot water supply heat source device 4 is introduced into the hot water storage tank 2 through 17.

In the auxiliary hot water supply introduction amount control means 48, the amount of hot water accumulated in the hot water storage tank 2 as the power generator 1 is operated based on the power usage amount relationship data learned and stored by the power usage amount relationship data learning storage unit 43. The stored hot water amount calculation data for determining the amount of hot water is provided. Based on the stored hot water amount calculation data and the power usage amount related data, the auxiliary hot water supply introduction amount control means 48 is connected to the hot water tank 2 as the power generator 1 is operated. The amount of hot water (accumulated hot water) accumulated in the inside is obtained. Then, corresponding to the difference between the supply amount of hot water from the amount and the hot water tank 2 of the storage water, auxiliary hot water introduction amount control means 48, through said auxiliary hot water supply passage 17 from the auxiliary hot water supply heat source unit 4 to the hot water storage tank 2 Find the amount of hot water to be introduced.

  Then, the auxiliary hot water supply amount control means 48 gives a command to the combustion control unit 42 to perform the combustion control of the auxiliary hot water supply heat source device 4, and the hot water on / off valve 20 and the branch passage provided in the auxiliary hot water supply passage 17. The hot water opening / closing valve 24 provided in 11 a is opened and introduced into the hot water tank 2 from the auxiliary hot water supply heat source device 4 through the auxiliary hot water supply passage 17. The amount of hot water introduced from the auxiliary hot water supply heat source device 4 into the hot water storage tank 2 is adjusted by the valve opening amount of the hot water proportional valve 21.

  The combustion control unit 42 adjusts the amount of gas supplied to the burner 6 by opening the gas on-off valve 81 and adjusting the valve opening amount of the gas proportional valve 86 while referring to the detected flow rate of the flow rate sensor 73 and combustion. The air volume of the fan 8 is adjusted, and combustion control of the burner 6 is performed so that the hot water discharged through the hot water supply heat exchanger 19 becomes a hot water having a set temperature.

  The hot water storage tank hot water supply temperature control unit 40 is configured to supply hot water discharged from the hot water discharge passage 45 based on the detected temperatures of the hot water temperature detection sensors 100 and 120 and the hot water supply temperature detection sensor 112 provided in the hot water supply path 12 of the hot water storage tank 2. The hot water on / off valve 54 is opened to adjust the valve opening amounts of the hot water proportional valves 55 and 56 so that the temperature becomes the hot water supply set temperature, thereby controlling the hot water supply temperature.

  The present embodiment is configured as described above, and hot water is accumulated in the hot water storage tank 2 using the exhaust heat formed by the operation of the power generation device 1. The relationship between the time on the time axis and the power usage amount using the power generation device 1 is learned and stored by the power usage amount relationship data learning storage unit 43 as power usage amount relationship data.

  Further, when hot water is supplied from the hot water supply passage 12 of the hot water storage tank 2, the relationship between the time on the time axis and the hot water use amount for each set cycle is the hot water use amount relation data learning storage unit 38 as hot water use amount relation data. Is stored by learning.

The auxiliary hot water supply introduction amount control means 48 refers to the power usage amount relation data and the hot water use amount relation data, and the auxiliary hot water introduction amount control means 48 is accumulated in the hot water tank 2 as the power generator 1 is operated. the time at which the supply amount of hot water is expected to be greater from the hot water storage tank 2 than the amount of accumulated water that is expected to that, large amount in correspondence to the difference between the supply amount of hot water from the amount and the hot water tank 2 of the storage water since the hot water is introduced from the auxiliary hot water supply heat source unit 4 to the hot water tank, the hot water tank 2 can be hot water storage hot water in an amount corresponding to the feed quantity of water.

  Therefore, by performing hot water supply from the hot water storage tank 2 as described above, this embodiment can always provide hot water having a stable set temperature, and can realize a hot water supply heat source system that can be used comfortably by the user. .

  Further, in the present embodiment, hot water formed by means arranged between the hot water storage tank 2 of the cogeneration hot water supply heat source device 3 and the power generation apparatus 1 is accumulated in the hot water storage tank 2, and the hot water in the hot water storage tank 2 is stored. Since the hot water supply path 12 provided in the hot water storage tank 2 supplies the hot water to the hot water supply destination, hot water accumulation by the cogeneration hot water supply heat source device 3 and hot water supply from the hot water storage tank 2 can be performed efficiently.

  In addition, this invention is not limited to the said embodiment, It can take various aspects. For example, in the above embodiment, the setting cycle is 1 day, but the setting cycle is not limited to 1 day, and may be 1 week, and is appropriately set to an integer of 1 day × 1 or more.

  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. 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.

  Furthermore, the hot water proportional valve 21, the hot water electromagnetic valve 20, and the flow rate sensor 73 may divert parts (parts) in the hot water heater 5. In the above embodiment, the hot and cold electromagnetic valves 20 and 24 are provided. However, only one of the hot and cold electromagnetic valves 20 and 24 may be provided.

  Further, as shown by the broken line in FIG. 2, when the solenoid valve 30 is provided between the hot water tank 2 and the branch passage 11b and the hot water proportional valve 21 and the hot water solenoid valve 20 are on (open), the solenoid valve 30 is provided. May be turned off (closed).

  Further, in the above embodiment, the water in the hot water storage tank 2 is heated to be hot water between the hot water storage tank 2 of the cogeneration hot water supply heat source device 3 and the power generation apparatus 1 using the exhaust heat of the power generation apparatus 1. Although the means is provided, as shown in FIGS. 4A and 4B, 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. 4A, 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.

  The configuration shown in FIG. 4B is a circulation pipe in which a heat exchange member 67 formed of, for example, a copper plate is provided between the hot water tank 2 and the power generator 1 to circulate the exhaust heat absorbing fluid of the power generator 1. 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.

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 a schematic explanatory diagram (a) of a system configuration of a hot water supply system formed by connecting a cogeneration hot water supply heat source device and an auxiliary hot water supply heat source device, and a graph (b) of a temporal change example of the hot water temperature. 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 17 Auxiliary hot water passage 37 Hot water supply usage data detection part 38 Hot water usage usage related data learning storage part 39 Electric power usage quantity data detection part 40 Hot water storage tank Use hot water supply temperature control unit 41 Clock mechanism 42 Combustion control unit 43 Electric power consumption related data learning storage unit 44 Controller 48 Auxiliary hot water supply introduction amount control means

Claims (4)

Uses heat exchange with the exhaust heat of the power generator to create hot water by heating the accumulated water in the hot water storage tank from the hot water storage tank through the hot water supply path to the hot water supply destination and heating the water. An auxiliary hot water supply heat source device having a function to perform, and an auxiliary hot water supply passage for introducing hot water created by the auxiliary hot water supply heat source device into the hot water storage tank of the cogeneration hot water supply heat source device is provided, and the operation of the power generation device A cycle of an integer multiple of one day (an integer multiple of 1 or more) based on a power generation device operation status detection unit that detects a situation, information obtained from the power generation device operation status detection unit, and time information obtained from a clock mechanism A power usage data detection unit that detects power usage data using the power generator for each time on the time axis for each set cycle, and stores the detection data detected by the power usage data detection unit. Then, based on the accumulated data, a power usage relationship data learning storage unit that learns and stores the relationship between the time on the time axis for each set period and the power usage of the power generation device as power usage relationship data, and the setting Hot water use amount data detection unit for detecting hot water use amount data from the hot water storage tank for each time on the time axis for each cycle based on information on the hot water flow rate obtained from the flow sensor and time information obtained from the clock mechanism And the detection data detected by the hot water use amount data detection unit is accumulated, and the relationship between the time on the time axis and the hot water use amount for each set period is learned and stored as hot water use amount relation data based on the accumulated data. A hot water use amount-related data learning storage unit that refers to the electric power use amount-related data and the hot water use amount-related data, and stores the hot water use amount in the hot water storage tank as the power generator is operated. Calculated based the amount of accumulated water which is expected to be in the power consumption related data, the amount of the accumulated hot water to the time at which feeding hot water is expected to be greater from the hot water tank than the amount of the obtained accumulated water have a supplementary hot water introduction amount control means for introducing the hot water storage tank large amount of hot water so as to correspond to the difference between the feeding hot water from the auxiliary water heater heat source device via the auxiliary hot water supply passage from the hot water tank, the auxiliary hot water supply The heat source device is configured to be excluded from the heat exchange circuit between the power generator and the hot water in the hot water tank, and the auxiliary hot water passage does not pass through the heat exchange circuit between the power generator and the hot water in the hot water tank. A hot water supply heat source system, wherein hot water created by an auxiliary hot water supply heat source device is directly introduced into the hot water storage tank . The hot water passage is connected to the upper side of the hot water tank, and the auxiliary hot water passage is connected to the upper side of the hot water tank at a position lower than the hot water path away from the connection position of the hot water tank, and the lower part of the hot water tank A water supply pipe is connected to the side, and the hot water accumulated in the hot water storage tank using the exhaust heat of the power generator is configured to be accumulated from above the hot water storage tank, and the hot water tank is fed through the hot water supply channel. 2. The hot water supply heat source system according to claim 1, wherein water is supplied from the water supply pipe into the hot water tank by an amount corresponding to a reduced amount of hot water. The hot water storage tank of the cogeneration hot water supply heat source device includes a water supply path for introducing water into the hot water storage tank and a hot water supply path for supplying hot water from the hot water storage tank. Between the hot water storage tank and the power generation apparatus, exhaust heat from the power generation apparatus or Means is provided for heating the water in the hot water storage tank using the heat of the exhaust heat absorbing fluid of the power generation device to make hot water, and the hot water formed by the means is accumulated in the hot water storage tank. claim 1 or claim 2 hot water supply heat source system according to characterized in that it forms a structure for supplying the hot water destination through the hot water supply path. The hot water supply heat source system according to claim 1, wherein the power generation device is a fuel cell that generates electricity by reacting hydrogen and oxygen.

Images