JP6789750B2 - Power generation hot water supply system and power generation hot water supply heating system - Google Patents

Description

The present invention relates to a power generation hot water supply system and a power generation hot water supply / heating system having a combined heat and power supply device, a hot water storage tank, and a combustion heat source machine.

For example, Patent Document 1 discloses a hot water storage type heat source device that can heat hot water in one hot water storage tank by a heat and power cogeneration device and can also be heated by a heat pump device. The hot water taken out from the hot water storage tank is mixed with the water supply or heated by a burner type combustion device to adjust the temperature and is used for hot water supply points and heating.

JP-A-2015-75321

In the hot water storage type heat source device described in Patent Document 1, one hot water storage tank stores heat exhausted from the heat and power cogeneration device and heat generated by the heat pump device. However, there is a temperature difference between the temperature of the hot water heated by the exhaust heat when the combined heat and power supply device is operated with high efficiency and the temperature of the hot water heated by the heat generated when the heat pump device is operated with high efficiency. Since it is relatively large, the heat balance is poor. For example, if the temperature of the hot water heated by the heat and power cogeneration device is lower than the temperature of the hot water heated by the heat pump device, and the hot water heated by the heat pump device is filled in the hot water storage tank, the heat and power cogeneration device may be used. Since the hot water in the hot water storage tank cannot be heated to a higher temperature, the exhaust heat of the heat and power cogeneration device must be discarded, and the energy efficiency of the heat and power cogeneration device is lowered.

The present invention has been devised in view of these points, and is capable of further improving the energy efficiency of the combined heat and power system and further improving the energy efficiency of the entire system. The challenge is to provide a system.

In order to solve the above problems, the power generation hot water supply system and the power generation hot water supply / heating system according to the present invention take the following means. First, the first invention of the present invention includes a combined heat and power device that generates heat and electric power, a hot water storage tank of a power generation unit that stores hot water heated by using the heat generated by the combined heat and power device, and an electric heat pump device. , A non-power generation unit hot water storage tank that stores hot water heated by using the heat generated by the electric heat pump device, a power generation unit hot water that is hot water supplied from the power generation unit hot water storage tank, and a non-power generation unit hot water storage tank. It is a power generation hot water supply system having a combustion heat source machine that heats hot water including at least one of the non-power generation part hot water which is the hot water to be generated by a combustion device and supplies it to the hot water supply equipment.

Next, the second invention of the present invention is the power generation hot water supply system according to the first invention, which is supplied from the non-power generation unit hot water storage tank and the power generation unit hot water storage tank. One end is connected to a first mixing device that discharges a first mixed water that is a mixture of the hot water containing the hot water of the power generation unit and a discharge port that discharges the first mixed water from the first mixing device. A first mixing device discharge pipe, and the other end of the first mixing device discharge pipe is a power generation hot water supply system connected to an inflow port of the combustion heat source machine.

Next, the third invention of the present invention is the power generation hot water supply system according to the second invention, which has a heat source machine bypass pipe and a bypass valve, and the discharge port of the combustion heat source machine has a heat source machine bypass pipe and a bypass valve. The heat source machine discharge pipe is connected, and one end of the heat source machine bypass pipe is connected to the first mixing device discharge pipe and the other end is connected to the heat source machine discharge pipe. It is a power generation supply system provided in the heat source machine bypass pipe and adjusting the opening degree of the heat source machine bypass pipe.

Next, the fourth invention of the present invention is the power generation hot water supply system according to the second invention or the third invention, which has a second mixing device, and the first mixing device includes the power generation unit. Clean water is supplied in place of hot water containing hot water, and the other end of the discharge pipe of the first mixing device is connected to the inflow port of the second mixing device instead of the inflow port of the combustion heat source machine. The second mixing device is a second mixed water in which the first mixed water flowing in from the discharge pipe of the first mixing device and the hot water containing the hot water of the power generation unit supplied from the hot water storage tank of the power generation unit are mixed. In a power generation hot water supply system in which a discharge port from which the second mixed water is discharged from the second mixing device and an inflow port of the combustion heat source machine are connected by a second mixing device discharge pipe. is there.

Next, the fifth invention of the present invention is a power generation hot water supply system according to any one of the first to fourth inventions, and has a solar heat collector in place of the electric heat pump device. It is a power generation hot water supply system.

Next, the sixth invention of the present invention is the power generation hot water supply system according to any one of the first to third inventions, in which the operation of the heat and power combined supply device is controlled and the power generation unit hot water storage tank. A combined heat and power control device capable of detecting the state of the above, a heat pump control device capable of controlling the operation of the electric heat pump device, and a non-power generation unit hot water storage tank control device capable of detecting the state of the non-power generation unit hot water storage tank. , The combustion heat source machine control device capable of controlling the operation of the combustion heat source machine, the hot water supply controller capable of inputting at least the instruction of the hot water supply temperature, the heat and power combined supply control device, the heat pump control device, and the non-power generation unit hot water storage. It has a tank control device, the combustion heat source machine control device, and a master control device capable of transmitting and receiving information to and from each other. Then, when hot water is supplied, the master control device determines the amount of hot water in the power generation unit to be supplied from the hot water storage tank of the power generation unit and the amount of hot water in the power generation unit based on the hot water supply temperature input to the hot water supply controller and information from each control device. This is a power generation hot water supply system that obtains the amount of hot water in the non-power generation section to be supplied from the hot water storage tank of the non-power generation section and supplies hot water based on the obtained amount of each hot water.

Next, the seventh invention of the present invention is the power generation hot water supply system according to the fourth invention, which can control the operation of the heat and power combined supply device and detect the state of the hot water storage tank of the power generation unit. The operation of the device, the heat pump control device capable of controlling the operation of the electric heat pump device, the non-power generation section hot water storage tank control device capable of detecting the state of the non-power generation section hot water storage tank, and the operation of the combustion heat source machine can be controlled. A possible combustion heat source machine control device, a mixing control device capable of controlling the operation of the second mixing device, a hot water supply controller capable of inputting at least an instruction of a hot water supply temperature, a combined heat and power control device, and the heat pump control device. A master control device capable of transmitting and receiving information to and from each of the non-power generation unit hot water storage tank control device, the combustion heat source device control device, and the mixing control device. Then, the master control device determines the amount of hot water in the power generation unit to be supplied from the hot water storage tank of the power generation unit and the amount of hot water in the power generation unit based on the hot water supply temperature input to the hot water supply controller and information from each control device at the time of hot water supply. The amount of hot water in the non-power generation unit to be supplied from the hot water storage tank of the non-power generation unit is obtained, hot water is supplied based on each obtained amount of hot water, and the control amount of the mixing device is obtained, and the obtained control amount of the mixing device is obtained. When it is transmitted to the mixing control device and the mixing control device receives the mixing device control amount from the master control device, the ratio of the hot water of the power generation unit and the non-power generation are based on the received mixing device control amount. It is a power generation hot water supply system that adjusts the ratio of hot water and water.

Next, the eighth invention of the present invention is the power generation hot water supply system according to the sixth invention or the seventh invention, and the master control device is a supply amount from the power generation unit hot water at the time of hot water supply. In a power generation hot water supply system in which the supply from the non-power generation section hot water is prioritized over the supply from the non-power generation section hot water, and the power generation section hot water is preferentially used when obtaining the supply amount from the non-power generation section hot water. is there.

Next, the ninth invention of the present invention is a power generation hot water supply system according to any one of the sixth to eighth inventions, and is a portion for distributing electric power to be supplied into a preset area. It has an electric board, and commercial power is supplied to the distribution board and power generated by the combined heat and power device is supplied to the electric heat pump device and the combustion heat source machine. Electricity is supplied from the electric panel, and the master control device includes the amount of electric power demand supplied from the commercial electric power to the distribution panel, the amount of electric power generated by the combined heat and power supply device, and the hot water storage of the power generation unit. The amount of hot water in the power generation unit stored in the tank, the amount of hot water in the non-power generation unit stored in the hot water storage tank in the non-power generation unit, and the hot water in the power generation unit and the hot water in the non-power generation unit were used for hot water supply. The amount of hot water supplied and the amount of hot water supplied are stored for a plurality of days corresponding to the time, and based on the storage, a schedule including the operation schedules of the combined heat and power device and the electric heat pump device corresponding to the time is created and created. It is a power generation hot water supply system that controls the operation of the combined heat and power supply device and the electric heat pump device based on the schedule.

Next, the tenth invention of the present invention is the power generation hot water supply system according to the ninth invention, and the master control device operates the electric heat pump device when the schedule is created. Is set preferentially in the power generation low efficiency time zone in which the power demand amount is lower than the maximum efficiency power generation amount, which is the power generation amount in which the power generation efficiency in the combined heat and power supply device is highest, in the power generation low efficiency time zone. It is a power generation hot water supply system that brings the amount of power generated by the combined heat and power device close to the amount of power generated with the highest efficiency.

Next, the eleventh invention of the present invention is a power generation hot water supply system according to any one of the first to fourth inventions and the sixth to tenth inventions, and is the electric heat pump device. Is a power generation hot water supply system that is arranged at a position adjacent to the combined heat and power supply device, and supplies a part of the generated heat to the electric heat pump device.

Next, the twelfth invention of the present invention is a power generation hot water supply / heating system using the power generation hot water supply system according to any one of the above-mentioned first invention to fourth invention and sixth invention to eleventh invention. It has a heat medium heating device that heats using a heat medium and a heating controller that can input an instruction of a heating temperature by the heat medium heating device, and the heat medium is the combustion heat source machine and the heat. The heat medium circulation pipe is circulated in the heat medium circulation pipe connected to the medium heating device, and the heat medium circulation pipe includes a heat medium heat pump forward pipe capable of guiding the heat medium to the electric heat pump device, and the heat medium heat pump forward pipe. A heat medium heat pump return pipe that returns the heat medium heated by the electric heat pump device to the heat medium circulation pipe is connected, and the master control device is based on the heating temperature input to the heating controller. , A power generation hot water supply / heating system that controls the operation of the combustion heat source machine and the electric heat pump device.

According to the first invention, it has two hot water storage tanks, a hot water storage tank for a power generation unit and a hot water storage tank for a non-power generation unit, and stores the exhaust heat of the combined heat and power supply device in the hot water storage tank of the power generation unit to store the heat from the electric heat pump device. Store in the hot water storage tank of the non-power generation section. As a result, compared with the case where heat is stored in one hot water storage tank, the deterioration of the heat balance can be eliminated and the frequency of discarding the exhaust heat of the combined heat and power unit can be reduced, so that the energy efficiency of the combined heat and power unit can be further improved. Can be planned.

According to the second invention, it has a first mixing device that mixes hot water containing hot water in the power generation section and hot water in the non-power generation section and discharges the first mixed water, and positively uses the hot water in the power generation section. , It is possible to reduce the frequency of discarding the exhaust heat of the combined heat and power device and further improve the energy efficiency of the combined heat and power device.

According to the third invention, by mixing the hot water discharged from the combustion heat source machine with the hot water from the heat source machine bypass pipe whose flow rate is adjusted by the bypass valve, the temperature can be raised only to 5 [° C.] or more, for example. Even with such a combustion heat source machine, it is possible to raise the temperature to less than 5 [° C.]. Therefore, the energy efficiency of the entire power generation and hot water supply system can be further improved.

According to the fourth invention, by having the first mixing device and the second mixing device, it becomes possible to use the hot water of the power generation unit more positively, and further reduce the frequency of discarding the exhaust heat of the heat and power cogeneration device. It is possible to further improve the energy efficiency of the combined heat and power device.

According to the fifth invention, by having the solar heat collector instead of the electric heat pump, the energy efficiency of the entire power generation hot water supply system can be further improved. In addition, the amount of heat stored by the solar heat collector fluctuates and is unstable depending on the weather, season, and time zone, but since the hot water storage tank for the power generation section and the hot water storage tank for the non-power generation section are separated, it is possible to use the combined heat and power supply device. It is possible to efficiently store heat from each of the solar heat collectors.

According to the sixth invention, by providing the master control device and controlling the entire system, the entire system can be operated appropriately and efficiently. In addition, when the combined heat and power supply device, electric heat pump, hot water storage tank for non-power generation unit, combustion heat source machine, etc. are existing devices, it is sufficient to focus on the development of the master control device, and the system can be developed efficiently.

According to the seventh invention, as in the sixth invention, by providing a master control device and controlling the entire system, it is possible to operate the entire system appropriately and efficiently, and to develop the system. It can be done efficiently. Further, the second mixing device can be appropriately controlled.

According to the eighth invention, by prioritizing the use of the hot water of the power generation section over the hot water of the non-power generation section when supplying hot water, the frequency of discarding the exhaust heat of the combined heat and power supply device can be reduced. It is possible to improve the energy efficiency.

According to the ninth invention, the master control device is used to appropriately create a schedule for operating the energy-efficient combined heat and power device and the electric heat pump device, and the combined heat and power device and the electric heat pump device are based on the created schedule. To drive. As a result, it is possible to efficiently perform power generation by operating the combined heat and power supply device and hot water storage in the power generation section, power consumption by the electric heat pump device, hot water storage in the non-power generation section, and hot water supply.

According to the tenth invention, the energy efficiency of the combined heat and power device can be further improved.

According to the eleventh invention, the energy efficiency of the entire system is further improved by using the heat generated in the combined heat and power device and not stored in the hot water of the power generation unit in the electric heat pump device. Can be done.

According to the twelfth invention, in an energy-efficient system, not only hot water supply but also heating can be performed, so that the energy efficiency of the entire system can be further improved.

It is a figure explaining the example of the whole structure of the power generation hot water supply system of 1st Embodiment. It is a figure explaining the predicted electric power demand amount and hot water supply amount, the planned operation schedule of the combined heat and power supply device and the electric heat pump device, and the state of the hot water storage amount with respect to a combined heat and power supply device and an electric heat pump device. It is a figure explaining the example of the whole structure of the power generation hot water supply system of 2nd Embodiment. It is a figure explaining the example of the whole structure of the power generation hot water supply system of 3rd Embodiment. It is a figure explaining the example of the whole structure of the power generation hot water supply system of 4th Embodiment. It is a figure explaining an example of the whole structure of the power generation hot water supply system of 5th Embodiment. It is a figure explaining the example of the whole structure of the power generation hot water supply system of 6th Embodiment. It is a figure explaining the example of the whole structure of the power generation hot water supply heating system which is 7th Embodiment.

The first to seventh embodiments for carrying out the present invention will be described below with reference to the drawings. In addition, each embodiment shows an example of a power generation hot water supply system (or power generation hot water supply heating system) applied to a general house.

● [Overall configuration of the power generation hot water supply system 1A of the first embodiment (Fig. 1)]
As shown in FIG. 1, the power generation hot water supply system 1A of the first embodiment includes a heat and power combined supply device 10 having a power generation unit hot water storage tank 12, an electric heat pump device 20, and a main hot water storage device 30 having a non-power generation unit hot water storage tank 32. It has a combustion heat source machine 40, a hot water supply controller 40R, a master control device 50, and the like.

The combined heat and power device 10 is, for example, a household fuel cell cogeneration system, which includes a combined heat and power control device 11, a hot water storage tank 12 for a power generation unit, a pump 12P, a generator 13, an inverter 14, a blower fan 15, and hot water. It has a mixing device 16 and the like. The combined heat and power control device 11 can communicate with the master control device 50 via the communication line 51T. The combined heat and power control device 11 controls the generator 13, the inverter 14, the pump 12P, and the blower fan 15 based on the information (drive instruction, etc.) transmitted from the master control device 50.

Fuel such as city gas is supplied to the generator 13, and the fuel and oxygen in the air are used to generate electricity, and the generated electric power is output to the inverter 14. Further, using the exhaust heat generated during power generation, for example, the pump 12P is used to circulate the hot water in the hot water storage tank 12 of the power generation unit or the heat medium 13N in the closed circuit to generate the hot water of the power generation unit in the hot water storage tank 12 of the power generation unit. Heat. Further, the inverter 14 converts the power input from the generator 13 into AC power having the same frequency and amplitude as the commercial power, adjusts the phase, and outputs the power to the distribution board 70. The power line 10E that supplies power from the combined heat and power device 10 to the distribution board 70 is provided with a power detection means 10S (power detection sensor or the like), and the master control device 50 uses the detection signal from the power detection means 10S as a detection signal. Based on this, the electric power supplied from the combined heat and power supply device 10 to the distribution board 70 can be detected. The hot water mixing device 16 is supplied with the hot water of the power generation unit in the hot water storage tank 12 of the power generation unit and the clean water supplied via the pipe 12H, and generates a mixed water obtained by mixing the supplied hot water of the power generation unit and the clean water. Discharge to the partial discharge pipe 12J. Further, the mixing ratio of the hot water of the power generation unit and the clean water in the hot water mixing device 16 is controlled by the combined heat and power control device 11.

Clean water (for example, tap water) is supplied to the hot water storage tank 12 of the power generation unit via the pipe 12H, and the combined heat and power control device 11 generates clean water based on information from the master control device 50 and the like. Take it into the hot water storage tank 12. The hot water storage capacity of the hot water storage tank 12 of the power generation unit is smaller than the hot water storage capacity of the hot water storage tank 32 of the non-power generation unit. As described above, the hot water of the power generation unit in the hot water storage tank 12 of the power generation unit is heated via, for example, the heat medium 13N. Further, when the hot water of the non-power generation section in the hot water storage tank 32 of the non-power generation section is discharged, the hot water of the power generation section in the hot water storage tank 12 of the power generation section utilizes the pressure of the clean water or the like to use the hot water of the power generation section 16. The hot water (mixed water) containing the above is discharged from the hot water storage tank 12 of the power generation unit to the hot water storage tank 32 of the non-power generation unit via the power generation unit discharge pipe 12J. Although not shown, the power generation unit hot water storage tank 12 is provided with temperature detecting means and water level detecting means at various positions, and the combined heat and power supply control device 11 is provided with the power generation unit hot water in the power generation unit hot water storage tank 12. The amount and temperature can be detected.

The combined heat and power control device 11 detects the internal temperature of the combined heat and power device 10 (the temperature detecting means is not shown), and drives the blower fan 15 when it is determined that the inside of the combined heat and power device 10 needs to be cooled. .. Further, the electric heat pump device 20 is arranged close to the tip of the blower fan 15 in the blower direction. The warm air from the blower fan is used for defrosting the electric heat pump device 20 and heating with the electric heat pump. Therefore, the heat generated by the combined heat and power device 10 that is not stored in the hot water storage tank of the power generation unit is discarded from the combined heat and power device 10 by the blower fan, but this heat is also used in the electric heat pump device 20 in the present application. To do. Therefore, the energy efficiency of the entire system can be further improved. Hot air may be sent to the electric heat pump device via a duct or the like, or heat may be sent to the electric heat pump device via a heat exchanger or a heat medium.

The electric heat pump device 20 includes a heat pump control device 21, an electric heat pump 23, a heat exchanger 24, a pump 24P, and the like. The heat pump control device 21 can communicate with the master control device 50 via the communication line 52T, and can communicate with the non-power generation unit hot water storage tank control device 31 via the communication line 32T. The heat pump control device 21 controls the electric heat pump 23 and the pump 24P based on information (drive instructions, etc.) transmitted from the master control device 50 and the non-power generation unit hot water storage tank control device 31.

Electric power is supplied to the electric heat pump device 20 from the distribution board 70 via the power line 20E, and the power line 20E is provided with the power detection means 20S (power detection sensor or the like). The master control device 50 can detect the power supplied from the distribution board 70 to the electric heat pump device 20 (that is, the power consumption of the electric heat pump device 20) based on the detection signal from the power detecting means 20S.

When controlled by the heat pump control device 21, the electric heat pump 23 heats the non-power generation unit hot water in the non-power generation unit hot water storage tank 32 via the heat exchanger 24. The pump 24P guides the hot water of the non-power generation section taken out from the pipe 24H provided in the lower part of the hot water storage tank 32 of the non-power generation section to the heat exchanger 24, and the hot water heated by the heat exchanger 24 is passed through the pipe 24J. And return it to the upper part of the non-power generation part hot water storage tank 32.

The main hot water storage device 30 includes a non-power generation unit hot water storage tank control device 31, a non-power generation unit hot water storage tank 32, and the like. The non-power generation unit hot water storage tank control device 31 can communicate with the master control device 50 via the communication line 53T, communicate with the heat pump control device 21 via the communication line 32T, and communicate with each other via the communication line 34T. It can communicate with the combustion heat source unit control device 41. The non-power generation unit hot water storage tank control device 31 controls the hot water discharge temperature of the main hot water storage device 30 based on the information (drive instruction, etc.) transmitted from the master control device 50, the heat pump control device 21, or the combustion heat source device control device 41. ..

Hot water containing the hot water of the power generation unit (mixed water of hot water of the power generation unit and clean water) in the hot water storage tank 12 of the power generation unit is supplied to the hot water storage tank 32 of the non-power generation unit via the discharge pipe 12J of the power generation unit. When the non-power generation unit hot water is discharged from the non-power generation unit hot water storage tank 32, hot water containing the power generation unit hot water in the power generation unit hot water storage tank 12 (power generation) via the power generation unit discharge pipe 12J using the pressure of clean water or the like. The mixed water of the hot water and the clean water) is discharged toward the hot water storage tank 32 of the non-power generation part. The heat source machine inflow pipe 42H connected to the inflow port of the combustion heat source machine 40 is integrated with the non-power generation unit discharge pipe 32J. Further, electric power is supplied to the main hot water storage device 30 from the combustion heat source machine 40 by the power line 30E. Although not shown, the non-power generation unit hot water storage tank 32 is provided with temperature detecting means and water level detecting means at various positions, and the non-power generation unit hot water storage tank control device 31 is inside the non-power generation unit hot water storage tank 32. It is possible to detect the amount and temperature of hot water in the non-power generation section.

The combustion heat source machine 40 is, for example, a so-called boiler that uses city gas as fuel, and has a combustion heat source machine control device 41, a heating burner 42, and the like. The combustion heat source unit control device 41 can communicate with the master control device 50 via the communication line 54T, and can communicate with the non-power generation unit hot water storage tank control device 31 via the communication line 34T. Further, the combustion heat source controller controller 41 can communicate with the hot water supply controller 40R via the communication line 40T. The combustion heat source controller control device 41 is based on information (hot water supply temperature information, etc.) transmitted from the hot water supply controller 40R and information (drive instructions, etc.) transmitted from the master control device 50 and the non-power generation unit hot water storage tank control device 31. , Control the heating burner 42.

The heating burner 42 (corresponding to the combustion device) heats the hot water flowing in from the heat source machine inflow pipe 42H, and discharges the heated hot water from the heat source machine discharge pipe 42J. The hot water discharged from the heat source machine discharge pipe 42J to the hot water supply pipe H is supplied to the hot water supply device at a place (bathtub, wash basin, kitchen, etc.) requesting hot water supply.

The hot water supply controller 40R is provided in a room such as a living room or a kitchen, and the user inputs hot water supply temperature information, hot water filling time including hot water filling time and hot water filling temperature of the bathtub, and the like. Then, the hot water supply temperature information, the hot water filling information, and the like are transmitted from the hot water supply controller 40R to the combustion heat source machine control device 41, and are transmitted from the combustion heat source machine control device 41 to the master control device 50. The master control device 50 uses the hot water supply temperature information and the hot water filling information when creating a schedule (operation schedule of the combined heat and power supply device 10 and the electric heat pump device 20) described later.

Power is supplied to the combustion heat source machine 40 from the distribution board 70 via the power line 40E, and the power line 40E is provided with a power detection means 40S (power detection sensor or the like). The master control device 50 is supplied from the distribution board 70 to the combustion heat source machine 40, the main hot water storage device 30 (from the power line 30E), and the master control device 50 (from the power line 50E) based on the detection signal from the power detection means 40S. The electric power (that is, the power consumption of the combustion heat source machine 40, the main hot water storage device 30, and the master control device 50) can be detected.

Commercial power is supplied to the distribution board 70 via the power line 70E, and the power generated by the combined heat and power supply device 10 is supplied via the power line 10E. Then, the distribution board 70 supplies electric power to the electric heat pump device 20 via the power line 20E, supplies electric power to the combustion heat source machine 40, the main hot water storage device 30, and the master control device 50 via the power line 40E, and supplies the electric power line E. Power is supplied to various devices in the house through. The power line 70E is provided with a power detection means 70S (power detection sensor or the like), and the master control device 50 can detect the power supplied from the commercial power based on the detection signal from the power detection means 70S. it can.

● [Example of procedure for creating an operation schedule for a combined heat and power device and an electric heat pump device using the master control device (Fig. 2)]
The master control device 50 can detect the power demand amount according to the time in the target house (within a preset area) based on the detection signals from the power detection means 70S and 10S. .. Further, the master control device 50 can detect the amount of hot water supplied according to the time in the target house based on the detection signal from the hot water supply amount detecting means (not shown) provided in the hot water supply pipe H. The master control device 50 stores the amount of power demand according to the time and the amount of hot water supply according to the time over a plurality of days, and for example, schedules for each day (the operation schedule of the combined heat and power supply device 10 and the operation schedule of the electric heat pump device 20). (Including) is created, and the operation of the combined heat and power device 10 and the electric heat pump device 20 is controlled based on the created schedule (operation instructions for each control device are transmitted to each control device).

For example, FIG. 2 shows an example in which the master control device 50 creates a schedule for a certain Sunday on Saturday the previous day. The amount of electricity demand (forecast) and the amount of hot water supply (forecast) according to the time can be obtained from the average of Sundays for a plurality of past days stored in the master control device 50. When creating the operation schedule (plan) of the combined heat and power equipment, which is the amount of power generated by the combined heat and power equipment according to the time, the master control device is calculated as less than or equal to the power demand (forecast) and less than or equal to the maximum efficiency of the combined heat and power generation. The hatched part in the first stage figure in 2 is created as an operation schedule (plan) of the combined heat and power system. In addition, when creating an operation schedule for the electric heat pump device to secure the amount of hot water supplied according to the time, the master control device is placed in the hot water storage tank of the power generation unit and the hot water storage tank of the non-power generation unit before each hot water supply amount (estimation). Create an operation schedule (plan) of the electric heat pump device so as to secure a sufficient amount of hot water and to raise the temperature of the stored hot water to an appropriate temperature. The hatched portion of the solid line in the fourth stage of FIG. 2 is an example of the operation schedule (plan) of the electric heat pump device. When creating the schedule, the master control device is created in consideration of the hot water supply temperature information and the hot water filling information from the hot water supply controller 40R. Then, when hot water is supplied, the master control device determines the amount of hot water in the power generation unit to be supplied from the hot water storage tank in the power generation unit and the hot water storage tank in the non-power generation unit based on the hot water supply temperature input to the hot water supply controller and information from each control device. The amount of hot water in the non-power generation section to be supplied from is obtained, and hot water is supplied based on the obtained amount of hot water.

Here, in order to further improve the energy efficiency of the combined heat and power device and improve the energy efficiency of the entire system, the master control device uses the operation schedule (plan) of the combined heat and power device and the electric heat pump device as follows. Revise the operation schedule (plan).

As shown in the first row of FIG. 2, in the section from 0:00 to 5:00, the amount of power generated by the combined heat and power device is low and the maximum efficiency power generation amount has not been reached, so that the energy efficiency of the combined heat and power device is high. Somewhat low. However, even if the generated power is not consumed, it is useless. Therefore, the master control device is used at a time (time zone) when the power generation amount of the combined heat and power cogeneration device is lower than the maximum efficiency power generation amount and at a time when the electric heat pump device is not operated (in this case, time 0 o'clock to time 5 o'clock). Operate the electric heat pump device and modify the schedule so that the amount of power generated by the combined heat and power device approaches the maximum efficiency. That is, the master control device sets the operating time zone (operating time zone) of the electric heat pump device to the power generation low efficiency time zone (first stage diagram of FIG. 2) in which the power demand amount is lower than the maximum efficiency power generation amount of the combined heat and power device. In the case of, the time zone from 0:00 to 5:00 is preferentially set. This makes it possible to bring the amount of power generated by the combined heat and power generation device closer to the maximum amount of power generated during the low efficiency period of power generation, further improve the energy efficiency of the combined heat and power generation device, and further improve the energy efficiency of the entire system. ..

As a result, the master control device corrects the power demand (forecast) from time 0 o'clock to time 5 o'clock in the first stage figure as shown by the dotted line. In addition, the master control device also corrects the amount of hot water stored in the hot water storage tank of the power generation unit (planned) from 0:00 to 5:00 in the second diagram as shown by the dotted line. Then, the master control device adds schedule B1 to the operation schedule (plan) of the electric heat pump device from 0:00 to 5:00 in the fourth diagram. Then, the master control device moves to the added schedule B1 from the time (time zone) when the power demand exceeds the maximum efficiency power generation amount of the combined heat and power generation device and the operation of the electric heat pump device is scheduled. The schedule part (schedule B2 in the example of the fourth figure) that may be used is deleted. That is, the schedule B2 is moved to the schedule B1 to prolong the time during which the maximum efficiency power generation amount of the combined heat and power generator can generate power.

As a result, the master control device corrects the power demand amount from time 0:00 to time 5:00 and the power demand amount from time 15:00 to time 24:00 in the first stage figure as shown by the dotted lines, and from time 0:00 to time. Corrected the power generation amount of the combined heat and power supply device at 5 o'clock so that it approaches the maximum efficiency power generation amount, and the hot water storage amount (plan) of the hot water storage tank of the power generation section from 0 o'clock to 5 o'clock in the second figure is shown by the dotted line. Correct to. Further, the master control device modifies the schedule B2 from time 15:00 to time 20:00 in the fourth stage diagram so as to move to the schedule B1 from time 0:00 to time 5:00. Then, the master control device corrects the hot water storage amount (plan) of the non-power generation unit hot water storage tank in the third stage figure as shown by the dotted line based on the above correction contents. As described above, it is possible to further improve the energy efficiency of the combined heat and power device and further improve the energy efficiency of the entire system.

The temperature of the hot water of the power generation unit stored in the hot water storage tank 12 of the power generation unit depends on the power generation output and the usage status of the hot water supply, which change every moment, but the hot water storage tanks are separately provided for the power generation unit and the non-power generation unit to generate the power generation unit. The hot water of the power generation unit and the clean water are mixed using the hot water mixing device 16 built in the power generation unit to make the temperature lower than the temperature of the hot water of the non-power generation unit stored in the hot water storage tank 32 of the non-power generation unit. By supplying the tank 32, the deterioration of the heat balance can be eliminated and the energy efficiency can be further improved. In the first embodiment shown in FIG. 1, the hot water of the power generation unit in the hot water storage tank 12 of the power generation unit is sent to the hot water storage tank 32 of the non-power generation unit via the discharge pipe 12J of the power generation unit, and is not in the hot water storage tank 32 of the non-power generation unit. The hot water of the power generation section is sent to the combustion heat source machine 40 via the discharge pipe 32J of the non-power generation section and the heat source machine inflow pipe 42H. By preferentially using the generator hot water when supplying hot water, the master control device can further improve the energy efficiency of the combined heat and power supply device and further improve the energy efficiency of the entire system.

● [Overall configuration of the power generation hot water supply system 1B of the second embodiment (Fig. 3)]
Next, the power generation hot water supply system 1B of the second embodiment will be described with reference to FIG. In the power generation hot water supply system 1B of the second embodiment shown in FIG. 3, a first mixing device 33 is added to the main hot water storage device 30 with respect to the power generation hot water supply system 1A of the first embodiment shown in FIG. The point and the connection state of the piping around the first mixing device 33 are different. Hereinafter, this difference will be mainly described. Since other points are the same as those in the first embodiment, the description thereof will be omitted.

In the first mixing device 33, the non-power generation section hot water in the non-power generation section hot water storage tank 32 via the non-power generation section discharge pipe 32J and the inside of the power generation section hot water storage tank 12 via the pipe 33H branched from the power generation section discharge pipe 12J. Hot water including hot water of the power generation section (mixed water of hot water of the power generation section and clean water) and water are supplied. Then, the first mixing device 33 discharges the first mixed water, which is a mixture of the supplied hot water of the non-power generation section and the hot water containing the hot water of the power generation section, from the discharge pipe 33J of the first mixing device. Further, one end of the first mixing device discharge pipe 33J is connected to the discharge port of the first mixing device 33, and the other end is integrally connected to the heat source machine inflow pipe 42H and connected to the inflow port of the combustion heat source machine 40. .. Further, in the first mixing device 33, the mixing ratio and the like are controlled from the non-power generation unit hot water storage tank control device 31. In the non-power generation unit hot water storage tank control device 31, the temperature of the first mixed water is the target temperature based on the target temperature instructed by the master control device 50, the temperature of the non-power generation unit hot water, and the temperature of the power generation unit hot water. The mixing ratio of the first mixing device 33 is controlled so as to be.

In the power generation hot water supply system 1B of the second embodiment, the temperature of the hot water supplied to the combustion heat source machine 40 can be adjusted by having the first mixing device 33 (in the hot water of the power generation unit having a relatively low temperature). It is possible to lower the temperature of hot water in non-power generation areas where the temperature is relatively high). Therefore, the power generation hot water supply system 1B can maintain the temperature of the non-power generation portion hot water at a higher temperature than the power generation hot water supply system 1A of the first embodiment and can freely adjust the temperature at the time of hot water supply, so that the fuel of the combustion heat source machine can be saved. This makes it possible to supply hot water with higher energy efficiency.

● [Overall configuration of the power generation hot water supply system 1C of the third embodiment (Fig. 4)]
Next, the power generation hot water supply system 1C of the third embodiment will be described with reference to FIG. The power generation hot water supply system 1C of the third embodiment shown in FIG. 4 has a heat source in the main hot water storage device 30 (or combustion heat source machine 40) with respect to the power generation hot water supply system 1B of the second embodiment shown in FIG. The difference is that the machine bypass pipe 33B and the bypass valve 33V are added. Hereinafter, this difference will be mainly described. Since other points are the same as those in the second embodiment, the description thereof will be omitted.

One end of the heat source machine bypass pipe 33B is connected to the first mixing device discharge pipe 33J, and the other end is connected to the heat source machine discharge pipe 42J. Further, the bypass valve 33V is provided in the heat source machine bypass pipe 33B and is controlled by the non-power generation unit hot water storage tank control device 31 (or the combustion heat source machine control device 41) to adjust the opening degree of the heat source machine bypass pipe 33B.

In the power generation hot water supply system 1C of the third embodiment, the energy efficiency of the combustion heat source machine 40 is improved by having the heat source machine bypass pipe 33B and the bypass valve 33V. For example, some combustion heat source machines 40 cannot raise the temperature by 1 [° C.] to 5 [° C.] and can only raise the temperature by 5 [° C.] or more. For example, if it is desired to supply hot water of 40 [° C.] but only hot water up to 38 [° C.] can be discharged from the first mixing device 33, the temperature is lowered to 35 [° C.] by the first mixing device 33 and discharged. , The temperature must be raised to 40 [° C.] by the combustion heat source machine 40. However, in the third embodiment, the temperature can be raised to 43 [° C.] by the combustion heat source machine 40 and mixed with hot water of 38 [° C.] from the heat source machine bypass pipe 33B to 40 [° C.]. When supplying hot water to the combustion heat source machine, it is not necessary to lower the temperature of the hot water more than necessary, and the fuel of the combustion heat source machine can be saved. That is, the energy efficiency of the entire system can be further improved.

● [Overall configuration of the power generation hot water supply system 1D of the fourth embodiment (Fig. 5)]
Next, the power generation hot water supply system 1D of the fourth embodiment will be described with reference to FIG. The power generation hot water supply system 1D of the fourth embodiment shown in FIG. 5 has a second mixing device 60 added to the power generation hot water supply system 1B of the second embodiment shown in FIG. 2 The connection state of the piping around the mixing device 60 is different. Hereinafter, this difference will be mainly described. Since other points are the same as those in the second embodiment, the description thereof will be omitted.

The second mixing device 60 includes the first mixed water from the first mixing device 33 and hot water containing the hot water of the power generation unit in the hot water storage tank 12 of the power generation unit via the discharge pipe 12J of the power generation unit (the hot water and clean water of the power generation unit). Mixed water) and is supplied. Then, the second mixing device 60 is integrated with the second mixing device discharge pipe 60J (heat source machine inflow pipe 42H) by mixing the supplied first mixed water with the hot water including the hot water of the power generation unit. Is discharged from). One end of the second mixing device discharge pipe 60J (heat source machine inflow pipe 42H) is connected to the discharge port of the second mixing device 60, and the other end is connected to the inflow port of the combustion heat source machine 40.

Further, the second mixing device 60 has a mixing control device 61, and the mixing control device 61 can communicate with the master control device 50 via the communication line 56T. In the second mixing device 60, the mixing ratio is controlled based on the instruction from the master control device 50. At the time of hot water supply, the master control device determines the amount of hot water from the power generation unit to be supplied from the hot water storage tank of the power generation unit and from the hot water storage tank of the non-power generation unit based on the hot water supply temperature information input to the hot water supply controller and the information from each control device. The amount of hot water in the non-power generation unit to be supplied is obtained, hot water is supplied based on the obtained amount of each hot water, the control amount of the mixing device is obtained, and the obtained control amount of the mixing device is transmitted to the mixing control device. Then, when the mixing control device receives the mixing device control amount from the master control device, the mixing control device adjusts the ratio of the hot water of the power generation unit and the ratio of the hot water of the non-power generation unit (mixing ratio) based on the received control amount of the mixing device.

Further, the first mixing device 33 is supplied with clean water from the pipe 33H instead of the hot water containing the hot water of the power generation section (mixed water of the hot water of the power generation section and the clean water) from the discharge pipe 12J of the power generation section. Therefore, in the fourth embodiment, the first mixing device 33 discharges the first mixed water, which is a mixture of the hot water of the non-power generation unit and the clean water, from the discharge pipe 33J of the first mixing device. Further, one end of the first mixing device discharge pipe 33J is connected to the discharge port of the first mixing device 33, and the other end is connected to one inlet of the second mixing device 60 (of the second mixing device 60). The power generation unit discharge pipe 12J is connected to the other inflow port).

Further, the non-power generation unit hot water storage tank 32 is supplied with clean water from the pipe 32H instead of the hot water containing the power generation unit hot water from the power generation unit discharge pipe 12J (mixed water of the power generation unit hot water and clean water). The non-power generation unit hot water storage tank control device 31 takes in tap water (for example, tap water) into the non-power generation unit hot water storage tank 32 based on information from the master control device 50 and the like.

In the power generation hot water supply system 1D of the fourth embodiment, the temperature of the first mixed water from the first mixing device is adjusted by having the second mixing device 60 and supplying clean water to the first mixing device 33. The range can be widened to increase the amount of hot water in the power generation unit supplied to the second mixing device 60. That is, it is convenient when the hot water of the power generation unit in the hot water storage tank 12 of the power generation unit is preferentially used.

● [Overall configuration of the power generation hot water supply system 1E of the fifth embodiment (Fig. 6)]
Next, the power generation hot water supply system 1E of the fifth embodiment will be described with reference to FIG. The power generation hot water supply system 1E of the fifth embodiment shown in FIG. 6 has a third hot water storage device 30 (or combustion heat source machine 40) with respect to the power generation hot water supply system 1D of the fourth embodiment shown in FIG. The difference is that the heat source machine bypass pipe 33B and the bypass valve 33V described in the third embodiment are added. Hereinafter, this difference will be mainly described. Since other points are the same as those in the fourth embodiment, the description thereof will be omitted.

Similar to the third embodiment, the heat source machine bypass pipe 33B has one end connected to the first mixing device discharge pipe 33J and the other end connected to the heat source machine discharge pipe 42J. Further, the bypass valve 33V is provided in the heat source machine bypass pipe 33B and is controlled by the non-power generation unit hot water storage tank control device 31 (or the combustion heat source machine control device 41) to adjust the opening degree of the heat source machine bypass pipe 33B.

In the power generation and hot water supply system 1E of the fifth embodiment, the energy efficiency of the combustion heat source machine 40 can be improved and the energy efficiency of the entire system can be further improved, as in the third embodiment. Further, as in the fourth embodiment, by having the second mixing device 60 and supplying clean water to the first mixing device 33, the hot water of the power generation unit in the hot water storage tank 12 of the power generation unit is preferentially used. It is convenient when.

● [Overall configuration of the power generation hot water supply system 1F of the sixth embodiment (Fig. 7)]
Next, the power generation hot water supply system 1F of the sixth embodiment will be described with reference to FIG. 7. The power generation hot water supply system 1F of the sixth embodiment shown in FIG. 7 has a solar heat collector 90 instead of the electric heat pump device 20 for the power generation hot water supply system 1E of the fifth embodiment shown in FIG. However, the difference is that the main hot water storage device 30 has a pump 24P. Further, since the solar heat collecting device 90 is used instead of the electric heat pump device 20, the power line 20E, the power detecting means 20S, the communication line 52T, and the communication line 32T are omitted from the power generation hot water supply system 1E of the fifth embodiment. ing. Hereinafter, this difference will be mainly described. Since other points are the same as those in the fifth embodiment, the description thereof will be omitted. The power generation hot water supply system 1F of the sixth embodiment shows an example in which the electric heat pump device 20 is replaced with the solar heat collector 90 from the power generation hot water supply system 1E of the fifth embodiment, but the first embodiment is shown. The electric heat pump device may be replaced with a solar heat collector from each of the power generation hot water supply systems described in the fifth and fifth embodiments. In the sixth embodiment, an example in which the electric heat pump device 20 is replaced with the solar heat collecting device 90 from the power generation hot water supply system 1E of the fifth embodiment will be described.

In the solar heat collector 90, hot water in the non-power generation section flows in from the pipe 24H provided at the bottom of the hot water storage tank 32 in the non-power generation section, the inflowing hot water is heated by solar heat, and the heated hot water is not passed through the pipe 24J. Return to the upper part of the hot water storage tank 32 of the power generation unit. The pump 24P that supplies hot water from the non-power generation unit to the solar heat collector 90 via the pipe 24H is controlled by the hot water storage tank control device 31 from the non-power generation unit.

In the power generation hot water supply system 1F of the sixth embodiment, by having the solar heat collector 90 instead of the electric heat pump device 20, the power consumption of the entire system can be reduced and the energy efficiency can be further improved. However, since the temperature and time zone in which the non-power generation unit hot water in the non-power generation unit hot water storage tank 32 can be heated by using the solar heat collector 90 is affected by the season and the weather, the operation schedule of the combined heat and power supply device should be changed. It is necessary to make appropriate corrections according to the hot water storage condition.

● [Overall configuration of the power generation hot water supply / heating system 1G of the seventh embodiment (Fig. 8)]
Next, the power generation hot water supply “heating” system 1G of the seventh embodiment will be described with reference to FIG. The power generation hot water supply and heating system 1G of the seventh embodiment shown in FIG. 8 has a heat medium heating device 80, a heating controller 80R, and heating for the power generation hot water supply system 1E of the fifth embodiment shown in FIG. It is different in that it has a heating burner 43 for heating, a pump 43P, a heat exchanger 25 for heating, a pump 25P, and each pipe connected to them. Hereinafter, this difference will be mainly described. Since other points are the same as those in the fifth embodiment, the description thereof will be omitted. The power generation hot water supply and heating system 1G of the seventh embodiment shows an example in which the heat medium heating device 80 and the like are added to the power generation and hot water supply system 1E of the fifth embodiment, but the first embodiment is shown. The above-mentioned heat medium heating device 80 or the like may be added to each of the power generation hot water supply systems described in the fifth and fifth embodiments. In the seventh embodiment, an example in which the above-mentioned heat medium heating device 80 or the like is added to the power generation hot water supply system 1E of the fifth embodiment will be described.

The heat medium heating device 80 is a heating device that heats using a heat medium such as hot water, and is, for example, a floor heating device. Heat medium circulation pipes 43H and 43J through which the heat medium is circulated are connected to the heat medium heating device 80. One end of the heat medium circulation pipe 43H is connected to the discharge port of the heating burner 43 for heating, and the other end is connected to the inflow port of the heat medium heating device 80. Further, the heat medium circulation pipe 43H is provided with a pump 43P controlled by the combustion heat source machine control device 41. One end of the heat medium circulation pipe 43J is connected to the discharge port of the heat medium heating device 80, and the other end is connected to the inflow port of the heating burner 43 for heating. Further, the heating burner 43 for heating is controlled by the combustion heat source machine control device 41.

A heat medium heat pump forward pipe 25H is connected to the heat medium circulation pipe 43J on the upstream side, and a heat medium heat pump return pipe 25J is connected to the downstream side. One end of the heat medium heat pump forward pipe 25H is connected to the heat medium circulation pipe 43J, and the other end is connected to the inflow port of the heating heat exchanger 25. Further, one end of the heat medium heat pump return pipe 25J is connected to the discharge port of the heating heat exchanger 25, and the other end is connected to the heat medium circulation pipe 43J. Further, the heat medium heat pump return pipe 25J is provided with a pump 25P controlled by the heat pump control device 21. When the pump 43P and the pump 25P are operating, the heat medium discharged from the heating burner 43 for heating is the heat medium circulation pipe 43H-heat medium heating device 80-heat medium circulation pipe 43J-heat medium heat pump outbound pipe. It circulates in the path of 25H-heating heat exchanger 25-heat medium heat pump return pipe 25J-heat medium circulation pipe 43J-heating heating burner 43. When only the pump 43P is operating, the heat medium discharged from the heating heating burner 43 is the heat medium circulation pipe 43H-heat medium heating device 80-heat medium circulation pipe 43J-heating heating burner 43. Circulate the route.

The heating controller 80R is provided in the living room, for example, and can communicate with the combustion heat source controller 41 via the communication line 80T. The heating controller 80R receives input of heating operation instruction information, heating temperature information, and the like from the user, and transmits the input information to the combustion heat source machine control device 41. When the combustion heat source unit control device 41 receives the heating operation instruction information and the heating temperature information, it transmits the received information to the master control device 50. A hot water supply / heating controller in which the heating controller 80R and the hot water supply controller 40R are integrated may be configured. Then, the master control device 50 provides instruction information for operating the heating burning burner 43 and the pump 43P so that the heat medium is heated by the combustion heat source machine 40 whose temperature rises quickly during a predetermined period from the start of heating. , Is transmitted to the combustion heat source machine control device 41. Further, the master control device 50 prepares to heat the heat medium by the heating heat exchanger 25 of the electric heat pump device 20 whose temperature rise is slow but the energy efficiency is higher than that of the combustion heat source machine. Instruction information for operating the pump 25P is transmitted to the heat pump control device 21. Then, when the master control device 50 is in a state where the heat medium can be sufficiently heated by the heating heat exchanger 25 of the electric heat pump device 20, the operation of the heating heating burner 43 is stopped (the pump 43P operates), and the electric heat pump 23 and pump 25P are operated.

In the power generation hot water supply / heating system 1G of the seventh embodiment, a heat medium heating device 80 or the like is added to the power generation hot water supply system 1E that can further improve the energy efficiency of the entire system, and not only power generation and hot water supply but also heating. It is very convenient because it can be used with higher energy efficiency.

As described above, in the first to seventh embodiments, the combustion heat source machine 40 is composed of the hot water of the power generation unit supplied from the hot water storage tank 12 of the power generation unit and the hot water of the non-power generation unit supplied from the hot water storage tank 32 of the non-power generation unit. Hot water containing at least one of them is heated by a heating burner 42 (combustion device) and supplied to the hot water supply device.

The power generation hot water supply system 1A to 1F and the power generation hot water supply / heating system 1G of the present invention are not limited to the configuration, operation, etc. described in the present embodiment, and various changes, additions, and deletions are made without changing the gist of the present invention. Is possible. For example, the number and arrangement of pumps are not limited to the number and arrangement described in the present embodiment.

In the description of the present embodiment, an example in which a household fuel cell cogeneration system is used as the combined heat and power device 10 has been described, but as the combined heat and power device, various cogeneration systems such as a gas engine cogeneration system are used. Can be done.

1A ~ 1F Power generation hot water supply system 1G Power generation hot water supply and heating system 10 Heat and power combined supply device 10E, 20E, 30E, 40E, 50E, 70E Power line 10S, 20S, 40S, 70S Power detection means 11 Thermal power combined supply control device 12 Power generation unit , 24J, 32H, 33H Piping 12J Power generation unit Discharge piping 12P Pump 13 Generator 14 Inverter 15 Blower fan 16 Hot water mixing device 20 Electric heat pump device 21 Heat pump control device 23 Electric heat pump 24 Heat exchanger 24P, 25P pump 25 Heat exchange for heating 25H heat medium heat pump outbound pipe 25J heat medium heat pump return pipe 30 main hot water storage device 31 non-power generation part hot water storage tank control device 32 non-power generation part hot water storage tank 32J non-power generation part discharge pipe 33 1st mixing device 33B heat source machine bypass pipe 33J 1st Mixing device Discharge piping 33V Bypass valve 40 Combustion heat source machine 40R Hot water supply controller 41 Combustion heat source machine control device 42 Heating burner (combustion device)
42H heat source machine inflow piping 42J heat source machine discharge piping 43 heating heating burner 43H, 43J heat medium circulation piping 43P pump 50 master controller 51T, 52T, 53T, 54T, 56T, 32T, 34T, 40T, 80T communication line 60 2nd Mixing device 60J 2nd mixing device Discharge piping 61 Mixing control device 70 Distribution board 80 Heat medium heating device 80R Heating controller 90 Solar heat collector H Hot water supply piping

Claims (12)

A combined heat and power device that generates heat and electricity,
A power generation unit hot water storage tank that stores hot water heated by using the heat generated by the combined heat and power device, and
Electric heat pump device and
A non-power generation unit hot water storage tank that stores hot water heated by using the heat generated by the electric heat pump device, and
Hot water to be supplied by heating hot water containing at least one of the hot water of the power generation section, which is the hot water supplied from the hot water storage tank of the power generation section, and the hot water of the non-power generation section, which is the hot water supplied from the hot water storage tank of the non-power generation section. Has a combustion heat source machine that supplies the equipment,
A first mixing device that discharges a first mixed water that is a mixture of the non-power generation part hot water and clean water supplied from the non-power generation part hot water storage tank.
It has a first mixing device discharge pipe having one end connected to a discharge port from which the first mixed water is discharged from the first mixing device.
A second mixing device,
The first mixing device the other end of the discharge pipe is connected to the inlet of the second mixing device,
The second mixing device is a second mixed water in which the first mixed water flowing in from the discharge pipe of the first mixing device and the hot water including the hot water of the power generation unit supplied from the hot water storage tank of the power generation unit are mixed. Discharge,
The discharge port from which the second mixed water is discharged from the second mixing device and the inflow port of the combustion heat source machine are connected by a second mixing device discharge pipe.
Power generation hot water supply system. The power generation hot water supply system according to claim 1 .
It has a heat source machine bypass pipe and a bypass valve.
A heat source machine discharge pipe is connected to the discharge port of the combustion heat source machine.
One end of the heat source machine bypass pipe is connected to the first mixing device discharge pipe, and the other end is connected to the heat source machine discharge pipe.
The bypass valve is provided in the heat source machine bypass pipe to adjust the opening degree of the heat source machine bypass pipe.
Power generation hot water supply system. The power generation hot water supply system according to claim 1 or 2 .
It has a solar heat collector instead of the electric heat pump device.
Power generation hot water supply system. A combined heat and power device that generates heat and electricity,
A power generation unit hot water storage tank that stores hot water heated by using the heat generated by the combined heat and power device, and
Electric heat pump device and
A non-power generation unit hot water storage tank that stores hot water heated by using the heat generated by the electric heat pump device, and
Hot water to be supplied by heating hot water containing at least one of the hot water of the power generation section, which is the hot water supplied from the hot water storage tank of the power generation section, and the hot water of the non-power generation section, which is the hot water supplied from the hot water storage tank of the non-power generation section. Has a combustion heat source machine that supplies the equipment,
A combined heat and power control device capable of controlling the operation of the combined heat and power device and detecting the state of the hot water storage tank of the power generation unit.
A heat pump control device capable of controlling the operation of the electric heat pump device, and
The non-power generation unit hot water storage tank control device capable of detecting the state of the non-power generation unit hot water storage tank,
A combustion heat source machine control device capable of controlling the operation of the combustion heat source machine,
At least a hot water controller that can input hot water temperature instructions,
The combined heat and power control device, the heat pump control device, the non-power generation unit hot water storage tank control device, and the combustion heat source device control device each have a master control device capable of transmitting and receiving information to and from each other. And
At the time of hot water supply, the master control device determines the amount of hot water in the power generation unit to be supplied from the hot water storage tank of the power generation unit and the non-power generation based on the hot water supply temperature input to the hot water supply controller and information from each control device. The amount of the non-power generation part hot water to be supplied from the part hot water storage tank is obtained, and hot water is supplied based on the obtained amount of each hot water.
Power generation hot water supply system. The power generation hot water supply system according to claim 4.
A first mixing device that discharges a first mixed water that is a mixture of the non-power generation unit hot water supplied from the non-power generation unit hot water storage tank and the hot water containing the power generation unit hot water supplied from the power generation unit hot water storage tank. ,
It has a first mixing device discharge pipe having one end connected to a discharge port from which the first mixed water is discharged from the first mixing device.
The other end of the discharge pipe of the first mixing device is connected to the inflow port of the combustion heat source machine.
Power generation hot water supply system. The power generation hot water supply system according to claim 5.
It has a heat source machine bypass pipe and a bypass valve.
A heat source machine discharge pipe is connected to the discharge port of the combustion heat source machine.
One end of the heat source machine bypass pipe is connected to the first mixing device discharge pipe, and the other end is connected to the heat source machine discharge pipe.
The bypass valve is provided in the heat source machine bypass pipe to adjust the opening degree of the heat source machine bypass pipe.
Power generation hot water supply system. The power generation hot water supply system according to claim 1 or 2 .
A combined heat and power control device capable of controlling the operation of the combined heat and power device and detecting the state of the hot water storage tank of the power generation unit.
A heat pump control device capable of controlling the operation of the electric heat pump device, and
The non-power generation unit hot water storage tank control device capable of detecting the state of the non-power generation unit hot water storage tank,
A combustion heat source machine control device capable of controlling the operation of the combustion heat source machine,
A mixing control device capable of controlling the operation of the second mixing device, and
At least a hot water controller that can input hot water temperature instructions,
A master capable of transmitting and receiving information to and from each of the combined heat and power control device, the heat pump control device, the non-power generation unit hot water storage tank control device, the combustion heat source device control device, and the mixing control device. With a control device,
At the time of hot water supply, the master control device determines the amount of hot water in the power generation unit to be supplied from the hot water storage tank of the power generation unit and the non-power generation based on the hot water supply temperature input to the hot water supply controller and information from each control device. The amount of the non-power-generating part hot water to be supplied from the hot water storage tank is obtained, hot water is supplied based on the obtained amount of each hot water, the control amount of the mixing device is obtained, and the obtained control amount of the mixing device is mixed. Send to the controller
When the mixing control device receives the mixing device control amount from the master control device, the mixing control device adjusts the ratio of the hot water of the power generation unit and the ratio of the hot water of the non-power generation unit based on the received control amount of the mixing device. To do
Power generation hot water supply system. The power generation hot water supply system according to any one of claims 4 to 7 .
The master control device
When obtaining the supply amount from the power generation section hot water and the supply amount from the non-power generation section hot water at the time of hot water supply, the supply from the power generation section hot water is prioritized over the supply from the non-power generation section hot water, and the power generation Priority is given to using hot water from the club.
Power generation hot water supply system. The power generation hot water supply system according to any one of claims 4 to 8 .
It has a distribution board that distributes the power to be supplied into the preset area.
Commercial power is supplied to the distribution board, and the power generated by the combined heat and power device is also supplied.
Electric power is supplied to the electric heat pump device and the combustion heat source machine from the distribution board.
The master control device
The amount of power demand supplied from the commercial power to the distribution board, the amount of power generated by the combined heat and power supply device, the amount of hot water stored in the hot water storage tank of the power generation unit, and the non-heat generation unit. The amount of hot water stored in the non-power generation section hot water stored in the hot water storage tank of the power generation section and the amount of hot water supplied from the power generation section hot water and the non-power generation section hot water are stored for a plurality of days according to the time. cage, operation based on the storage, creates a schedule including the said the cogeneration device to correspond to the time scheduled driving of the electric heat pump apparatus, the electrical heat pump device and the cogeneration device based on the schedule created To control,
Power generation hot water supply system. The power generation hot water supply system according to claim 9.
The master control device
When creating the schedule, the heat pump operating time zone in which the electric heat pump device is operated has a power generation low efficiency in which the power demand amount is lower than the maximum efficiency power generation amount, which is the power generation amount at which the power generation efficiency of the combined heat and power device is highest. By preferentially setting the time zone, the amount of power generated by the combined heat and power device in the low efficiency time zone of power generation is brought closer to the maximum efficiency power generation amount.
Power generation hot water supply system. The power generation hot water supply system according to any one of claims 1, 2, 4 to 10.
The electric heat pump device is arranged at a position adjacent to the heat and power cogeneration device.
The combined heat and power device supplies a part of the generated heat to the electric heat pump device.
Power generation hot water supply system. A power generation hot water supply / heating system using the power generation hot water supply system according to any one of claims 4 to 10 .
A heat medium heating device that heats using a heat medium,
It has a heating controller capable of inputting an instruction of a heating temperature by the heat medium heating device.
The heat medium is circulated in a heat medium circulation pipe connected to the combustion heat source machine and the heat medium heating device.
In the heat medium circulation pipe, the heat medium heat pump forward pipe capable of guiding the heat medium to the electric heat pump device and the heat medium heated by the electric heat pump device are returned to the heat medium circulation pipe. The heat medium heat pump return pipe is connected,
The master control device controls the operation of the combustion heat source machine and the electric heat pump device based on the heating temperature input to the heating controller.
Power generation hot water supply and heating system.

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