JP6706975B2 - Photovoltaic power generator cooperation hot water supply type hot water supply system - Google Patents

Description

The present invention includes a solar power generation device, and a hot water storage type hot water supply device having a hot water storage tank, a heating unit, and a heating circulation circuit, and uses the surplus power generated by the solar power generation device to boil The present invention relates to a cooperative hot water supply type hot water supply system.

Conventionally, in a hot water storage type hot water supply device that operates in cooperation with a solar power generation device of this type, as disclosed in Patent Document 1, surplus power is predicted from the power generation power prediction and power consumption prediction of the next day, Calculate the amount of heat that can be boiled with excess power, calculate the required amount of heat for the next day based on the amount of hot water used in the past, and subtract the amount of heat that can be boiled with excess power from the required amount of heat to boil at night. The amount of heat is calculated, and this amount of heat is boiled at night, and the remaining amount is boiled by surplus power during the day.

JP, 2013-148287, A

However, in recent years, in order to increase the heating efficiency of the heat pump type heating means, the boiling temperature is often set to a relatively low temperature of about 65° C. to 75° C. When the boiling temperature is set to a low value, the inside of the hot water storage tank Even if the tank is full, there will be situations where the required amount of heat cannot be boiled up.

In such a situation, a value obtained by subtracting the heat quantity that can be boiled with excess power from the required heat quantity as described above is calculated as the heat quantity that should be boiled at night, and when this heat quantity is boiled at night, excess power is generated during the day. Even if boiling is started at some time, the hot water tank will be full before the amount of heat that can be boiled with the initially predicted excess power has been completely heated, and the boiling with excess power cannot continue. There was a problem that it was not possible to fully utilize the surplus power predicted at the beginning.

Therefore, in order to solve the above-mentioned problems, the present invention has a solar power generation device and a hot water storage type hot water supply device having a hot water storage tank, a heating means, and a heating circulation circuit. In the above, the surplus power predicting means for calculating the surplus power prediction value of the next day by subtracting the power consumption prediction value of the next day of the electric load excluding the hot water storage type hot water supply device from the power generation prediction value of the next day of the solar power generation device, and 1 A used hot water amount learning means for learning and storing the used amount of hot water for multiple days as a learned used amount, and a required heat amount determination means for determining the required amount of heat on the next day from the learned used amount for the past multiple days as a required heat amount, The required capacity is calculated by dividing the required heat quantity by the temperature difference between the separately determined boiling target temperature and the feed water temperature, and the required capacity and the capacity of the hot water storage tank are compared, and the smaller capacity is boiled at night. Night-time boiling capacity calculation means for increasing the capacity, and when the required capacity exceeds the capacity of the hot water storage tank, the capacity of the hot water storage tank is subtracted from the required capacity to calculate the daytime boiling capacity and the daytime additional capacity calculation Means, surplus boiling time setting means for setting a surplus boiling time that can be used for boiling based on the surplus power predicted value, and surplus boiling that is boiled to the boiling target temperature at the surplus boiling time and surplus water heating capacity calculating means for calculating a raised capacity correction night by subtracting the surplus water heating capacity from the night boiling capacity is the capacity of the previous SL hot water storage tank when the required capacity exceeds the capacity of the hot water storage tank Calculate the boiling capacity, and if the required capacity does not exceed the capacity of the hot water storage tank, subtract the surplus boiling capacity from the night boiling capacity that is the required capacity, and correct night to calculate the boiling capacity. Boiling capacity calculation means, night boiling control means for boiling the corrected night boiling capacity at night, surplus boiling control means for boiling the surplus boiling capacity with daytime surplus power, and did.

Further, a daytime additional boiling control means for increasing the daytime additional boiling capacity after the completion of the excess boiling by the excess boiling control means is provided.

According to the present invention, it is possible to finish the night-time boiling in a state in which unheated water necessary for boiling up the amount of heat that can be boiled with excess power, that is, the excess boiling capacity is left in the hot water storage tank, It is possible to complete the boiling in the daytime by fully utilizing the predicted surplus power.

System diagram of one embodiment of the present invention Block diagram of the same embodiment Flowchart for explaining the operation of the same embodiment Flowchart for explaining the operation of the same embodiment The figure which shows the kind of boiling operation of the same embodiment and a prior art as a comparative example, and a relationship of boiling capacity

Next, a solar power generation device cooperation hot water storage type hot water supply system according to an embodiment of the present invention will be described with reference to the drawings.
1 is a heat pump type hot water storage type hot water supply device that mainly performs boiling at night when the unit price of electricity is cheap at night 2 is a distribution board connected to a commercial power source and installed in a house 3 is a roof of a house A solar power generation device including a installed solar power generation panel 4 and an inverter 5 that converts generated power of the solar power generation panel 4 into an AC power source, 6 is another electric load device such as an air conditioner, and 7 is a household HEMS equipment for performing power management (HEMS is an abbreviation for home energy management system), 8 is an external Internet communication network, and 9 is an external server equipment.

The HEMS device 7 is bidirectionally connected to the hot water storage type hot water supply device 1 and the solar power generation device 3 so as to be able to collect the usage status of the hot water storage type hot water supply device 1 and the generated power information of the solar power generation device 3. Information on the amount of power consumption for each branch circuit of the distribution board 2 can be collected and connected so that necessary information can be exchanged with the external server device 9 via the Internet communication network 8. .. Instead of communication between the HEMS device 7 and the solar power generation device 3, input of generated power to the distribution board 2 or transfer of power between the distribution board 3 and a commercial power source is monitored to perform sunlight. The power generation information of the power generation device 3 may be collected.

The heat pump hot water storage type hot water supply apparatus 1 will be described. 10 is a hot water storage tank for storing hot water, 11 is a water supply pipe for supplying water to the bottom of the hot water storage tank 10, 12 is a hot water discharge pipe for discharging hot water from the top of the hot water storage tank 10, and 13 is a water supply pipe 11 The water supply bypass pipe branched from 14 is a mixing valve for mixing the hot water from the hot water supply pipe 12 and the water from the water supply bypass pipe 13 to a hot water supply set temperature set by a remote control device (not shown), and 15 is a hot water supply terminal A hot water supply pipe, 16 is a hot water supply flow rate sensor for detecting a hot water supply flow rate, 17 is a hot water supply temperature sensor for detecting a hot water supply temperature, and 18 is a plurality of hot water storage tanks provided on the side surface of the hot water storage tank 10 at different height positions to detect the hot water storage temperature. It is a temperature sensor.

Reference numeral 19 denotes a heat pump type heating means for boiling hot water in the hot water storage tank 10 to heat it to a target temperature. The compressor 20 compresses and conveys the refrigerant to high temperature and high pressure, and the high temperature and high pressure refrigerant and water from the hot water storage tank 10 exchange heat. Water refrigerant heat exchanger 21, expansion means 22 for decompressing and expanding the refrigerant after heat exchange, air heat exchanger 23 for evaporating low pressure refrigerant, blower 24 for blowing outside air to air heat exchanger 23, and compression The discharge temperature sensor 25 detects the temperature of the refrigerant discharged from the machine 20.

Reference numeral 26 is a heating return pipe connecting the lower part of the hot water storage tank 10 and the water side inlet of the water refrigerant heat exchanger 21, and 27 is a heating return pipe connecting the water side outlet of the water refrigerant heat exchanger 21 and the upper part of the hot water storage tank 10. , 28 is a heating circulation pump provided in the middle of the heating forward pipe 26, 29 is a boiling temperature sensor provided in the heating return pipe 27, 30 is an outside air temperature sensor for detecting the outside air temperature, and 31 is the whole hot water storage water heater 1. Is a control means for controlling the operation of. The heating forward pipe 26, the heating return pipe 27, and the heating circulation pump 28 constitute a heating circulation circuit.

Here, as shown in FIG. 2, the HEMS device 7 is provided with a surplus power predicting means 32 and a surplus boiling time setting means 33.

The surplus power predicting unit 32 calculates the amount of power generated per unit time in the past predetermined period acquired from the solar power generation device 3, the predicted value of generated power per unit time predicted from the weather forecast information from the external server device 9, and the minutes. From the power consumption prediction value per unit time predicted from the power consumption per unit time in the past predetermined period other than the branch circuit connected to the hot water storage type hot water supply device 1 acquired from the electric panel 2, The surplus power prediction value of is calculated.

The surplus boiling time setting means 33 compares the surplus power predicted value for each unit time of the next day with a predetermined power consumption value required for the hot water storage type hot water supply device 1 to perform boiling, and continuously heats the same. The operating time is set as the excess boiling time.

As shown in FIG. 2, the control means 31 converts the output of the hot water supply flow rate sensor 16 and the output of the hot water supply temperature sensor 17 into the amount of hot water used at a predetermined temperature (here, 43° C.) and learns every day for a predetermined past period. Used water amount learning means 34 for learning as the amount of hot water, required heat amount determination means 35 for determining the required heat amount for the next day from the daily learned hot water amount for the past predetermined period, and the required heating amount for the next day and the boiling target temperature and the supply water temperature separately determined There is provided night-time boiling capacity calculating means 36 for calculating the necessary capacity by dividing it by the temperature difference between and, comparing the necessary capacity with the capacity of the hot water storage tank 10, and setting the smaller one as the night-time boiling capacity.

Further, the control means 31 includes an excess boiling capacity calculating means 37 for calculating an excess boiling capacity for boiling to the boiling target temperature in the excess boiling time determined by the excess boiling time setting means 33 of the HEMS device 7. , A correction night boiling capacity calculating means 38 for calculating a correction night boiling capacity by subtracting the surplus boiling capacity from the night boiling capacity, and a heat pump type heating means 19 for boiling the correction night boiling capacity in the night time zone. A night boiling control means 39 for controlling and a surplus boiling control means 40 for controlling the heat pump type heating means 19 so as to boil the surplus boiling capacity by using surplus power in the daytime are provided.

Furthermore, when the required capacity exceeds the capacity of the hot water storage tank 10, the control means 31 calculates the daytime boiling capacity calculating means 41 for calculating the daytime boiling capacity for increasing the portion that could not be heated at night during the daytime. When the remaining hot water capacity in the hot water storage tank 10 decreases to a predetermined amount or less, the daytime boiling control means 42 for controlling the heat pump type heating means 19 so as to raise the capacity by using the commercial power in the daytime Is provided.

Next, the operation of this solar power generation device cooperation hot water storage type hot water supply system will be described based on the flowchart shown in FIG.

When the start time tn1 of the nighttime time zone where the power unit price is low (Yes in step S1), the HEMS device 7 receives the surplus power prediction unit 32 from the solar power generation device 3 for a predetermined predetermined period (here, 7 days). Per unit time (here, one hour), weather forecast information from the external server device 9, installation conditions of the photovoltaic power generation panel 4 (for example, installation area, panel orientation, etc.), unit time from date information, etc. The predicted value of the generated power for each time is predicted (step S2), and the power consumption for each unit time in the past predetermined period other than the branch circuit connected to the hot water storage type hot water supply device 1 acquired from the distribution board 2 is calculated for each unit time. The predicted power consumption value is predicted (step S3), the predicted power consumption value for each unit time is subtracted from the generated power prediction value for each unit time, and the surplus power predicted value for each unit time of the next day is calculated (step S4).

Then, the surplus boiling time setting means 33 compares the surplus power predicted value for each unit time on the next day with a predetermined power consumption value required for the hot water storage water heater 1 to perform boiling, and the surplus power predicted value is Find a continuous time that is equal to or higher than the required boiling power value, and continuously boil from this continuous boiling operation time considering other limiting conditions (for example, minimum 1 hour, maximum 5 hours, etc.). The operable surplus boiling time T is set (step S5), and the surplus boiling start time td1 is determined by going back by the surplus boiling time T from the end of the continuous boiling operation time (step S6).

On the other hand, in the control means 31 of the hot water storage type hot water supply apparatus 1, the required heat quantity determining means 35 uses the average or standard deviation from the learned hot water usage for each day in the past predetermined period stored in the hot water usage learning means 34. The required heat quantity Q for the next day is determined (step S7). Here, the required heat quantity Q is calculated and determined as the required hot water quantity Vq converted to a predetermined temperature (here, 43° C.).

Then, the control unit 31 determines the boiling target temperature tm from the required hot water amount Vq determined by the required heat amount determination unit 35 and other conditions such as the outside air temperature or the feed water temperature (step S8). The boiling target temperature tm is set as low as possible between 65° C. and 75° C., and the boiling target temperature tm is set high when the required hot water amount Vq is high, the outside air temperature is low, and the feed water temperature is low. Is.

Next, the night boiling capacity calculation means 36 converts the required hot water amount Vq into the necessary capacity Cq at the boiling target temperature tm, and if the necessary capacity Cq is equal to or less than the capacity Ct of the hot water storage tank 10, the required capacity Cq is boiled at night. If the required capacity Cq is set as the raising capacity Cy and the required capacity Cq exceeds the capacity Ct of the hot water storage tank 10, the nighttime boiling capacity Cy is calculated so that the capacity Ct of the hot water storage tank 10 becomes the nighttime boiling capacity Cy (step S9).

This required capacity Cq is specifically calculated by Expression 1.
Formula 1: Cq=Vq·(43°C-tw)/(tm-tw)
Cq: Required capacity Vq: Required amount of hot water 43°C: Predetermined conversion temperature tm: Target boiling temperature tw: Water supply temperature Note that the specific heat of water and the density are both 1 to simplify the calculation.

Then, the night-time boiling capacity Cy is calculated as follows.
When Cq>Ct Cy=Ct
When Cq≦Ct Cy=Cq

When the required capacity Cq is equal to or greater than the capacity Ct of the hot water storage tank 10, the daytime boiling capacity calculation means 41 of the control means 31 subtracts the remaining hot water amount obtained by subtracting the capacity Ct of the hot water storage tank 10 from the required capacity Cq at night. It is calculated as the daytime additional boiling capacity Cw that needs to be increased during times other than the time zone (step S10).

This additional heating capacity Cw is specifically calculated by Expression 2.
Formula 2: Cw=Cq-Ct
Cw: Boiled capacity Cq: Required capacity Ct: Hot water storage tank capacity

Next, the surplus boiling capacity calculation means 37 of the control means 31 is heated to the boiling target temperature tm with the heating capacity H during the surplus boiling time T set by the surplus boiling time setting means 33 of the HEMS device. The surplus boiling capacity Ch is calculated (step S11). Here, the heating capacity H is a predetermined heating capacity of the heat pump heating means 19.

This surplus boiling capacity Ch is specifically calculated by Expression 3.
Formula 3: Ch=T·H/(tm-tw)
Ch = surplus boiling capacity T: surplus boiling time H: heating capacity tm: boiling target temperature tw: feed water temperature

Next, the corrected night boiling capacity calculating means 38 of the control means 31 calculates the surplus boiling capacity Ch calculated by the surplus boiling capacity calculating means 37 from the night boiling capacity Cy calculated by the night boiling capacity calculating means 36. Then, the corrected night-time boiling capacity Cyh is calculated by subtracting the corrected night-time boiling capacity (step S12).

This corrected night-time boiling capacity Cyh is specifically calculated by Expression 4.
Formula 4: Cyh=Cy−Ch
Cyh: Corrected night-time boiling capacity Cy: Night-time boiling capacity Ch: Excessive boiling capacity

Then, the night-time boiling control means 39 of the control means 31 uses the hot water storage temperatures detected by the hot water storage temperature sensors 18 and the sensor position information, and has a capacity equal to or higher than a predetermined threshold temperature (here, 50° C.) that can be regarded as hot water. Is calculated (step S13), and an appropriate night boiling start time tns is calculated so that the corrected night boiling capacity Cyh is completely boiled at the end time tn2 of the night time zone (step S14). ..

This nighttime boiling start time tns is specifically calculated by Expression 5.
Formula 5: tns=tn2-(Cyh-Cz)*(tm-tw)/H
tns: Night boiling start time tn2: Night time end time Cyh: Corrected night boiling capacity Cz: Remaining hot water capacity tm: Boiling target temperature tw: Water supply temperature H: Heating capacity

Then, when the current time reaches the nighttime boiling start time tns (Yes in step S15), the nighttime boiling control means 39 drives the heat pump type heating means 19 and the heating circulation pump 28 to take out from the lower part of the hot water storage tank 10. The boiling operation is performed at night so that the water is heated to the boiling target temperature tm and sequentially laminated from the upper part of the hot water storage tank 10 (step S16).

The night-time boiling control means 39 determines that the night-time boiling is completed when the hot water storage temperature sensor 18 detects that the corrected night-time boiling capacity Cyh has been boiled or when the current time is the end time tn2 of the night time zone. (Yes in step S17), the night boiling operation is stopped (step S18).

At this time, unheated water remains in the lower part of the hot water storage tank 10 by the same capacity as the surplus boiling capacity Ch.

Then, when the current time reaches the surplus boiling start time td1 (Yes in step S19), the excess boiling control means 40 drives the heat pump type heating means 19 and the heating circulation pump 28 to take out from the lower portion of the hot water storage tank 10. The excess boiling operation, which is scheduled to heat the water to the boiling target temperature tm and sequentially stack the hot water storage tanks 10 from above, is performed (step S20).

The excess boiling control means 40 detects that the excess boiling capacity Ch has been boiled by the hot water storage temperature sensor 18, or when the elapsed time from the excess boiling start time td1 reaches the excess boiling time T, the excess boiling time T is reached. It is determined that the raising has been completed (Yes in step S21), and the excess boiling operation is stopped (step S22).

Here, at the time of completion of the night boiling operation, unheated water by the same capacity as the surplus boiling capacity Ch remains in the lower part of the hot water storage tank 10, so that hot water is not supplied at all until the start of the surplus boiling operation. Even if it is not necessary, it is possible to continuously perform the surplus boiling operation that fully utilizes the surplus power that was originally predicted.

After the surplus boiling operation is completed, the daytime additional boiling control means 42 determines that the daytime additional boiling capacity Cw is Yes in step S23 when the additional daytime additional heating capacity Cw is calculated and there is a capacity, The present remaining hot water capacity Cz in the hot water storage tank 10 is calculated from the hot water storage temperatures detected by the plurality of hot water storage temperature sensors 18, and it is determined whether or not the remaining hot water capacity Cz is equal to or less than a predetermined amount (step S24).

When the hot water in the hot water storage tank 10 is discharged by the hot water supply and is replaced with the water supplied from the lower portion to reduce the residual hot water capacity Cz to a predetermined amount or less (Yes in step S24), the heat pump heating means 19 and the heating circulation pump 28. Is driven to heat the water taken out from the lower portion of the hot water storage tank 10 to the target temperature tm by boiling and start the daytime reheating operation that is scheduled to be sequentially stacked from the upper portion of the hot water storage tank 10 (step S25), The amount increased by the progress of the daytime additional heating operation is subtracted from the daytime additional heating capacity Cw and updated (step S26).

Then, when the updated daytime boiling capacity Cw becomes 0 (Yes in step S27), or when the hot water storage temperature sensor 18 at the bottom of the hot water storage tank 10 detects a predetermined daytime boiling completion temperature or more and becomes full ( Yes in step S28), the scheduled daytime additional heating operation is stopped (step S29), and the process returns to step S23.

In step S23, it is again determined whether or not the extra boiling capacity Cw remains in the daytime, and when it is determined that the extra boiling capacity Cw in the daytime does not remain (No in step S23), the hot water storage temperature sensor 18 at the top of the hot water storage tank 10 is set to a predetermined value. It is monitored whether the temperature falls below the hot water danger temperature, and when it falls below a predetermined hot water danger temperature, it is determined that the hot water runs out (Yes in step S30), and a predetermined time for temporarily eliminating the hot water runout ( Here, the hot water is reheated for 1 hour (step S31), and when the current time reaches the start time of the night time zone (Yes in step S31), the process returns to step 1 again.

Thus, in the present invention, the required amount of heat of the next day is converted into the required capacity at the boiling target temperature, and the smaller of the required capacity and the hot water storage tank capacity is taken as the nighttime boiling capacity, and the excess boiling capacity is calculated from the nighttime boiling capacity. Calculate the corrected night boiling capacity by subtracting the surplus boiling capacity that can be boiled to the target temperature at the raising time, and the corrected night boiling capacity is boiled during the night time zone, so it is boiled with excess power. It is possible to finish night-time boiling with the unheated water required for boiling up the heat that can be raised, that is, the excess boiling capacity left in the hot water storage tank, and utilize all the surplus power that was initially predicted. The daytime boiling can be completed.

Here, FIG. 5 is a diagram showing the relationship between the boiling operation type and the boiling capacity of the conventional technology disclosed in Patent Document 1 as a comparative example of the present embodiment, and the vertical axis indicates the boiling target temperature tm. It shows the boiling capacity.

Conventionally, the amount of heat that can be boiled with excess power is reduced from the required amount of heat, so this is converted into a capacity, and the required capacity Cq-excessive boiling capacity Cw is set as the capacity to boil at night, and the boiling at night is completed. At this time, only unheated water remains at the bottom of the hot water storage tank 10 at the capacity of Ct-(Cq-Cw). For this reason, even if the solar power generation device 3 generates power and surplus power is generated, the hot water storage tank 10 is heated to the boiling target temperature Tm before boiling all of the initially predicted surplus boiling capacity Cw. Since the tank is full, boiling cannot continue even if there is excess power.

On the other hand, the present invention determines the night-time boiling capacity with the capacity of the hot water storage tank as the upper limit, and heats the capacity obtained by subtracting the surplus boiling capacity Cw from the night-time boiling capacity (maximum Ct) in the night time zone. Therefore, at the time of completion of boiling at night, unheated water of Cw capacity remains at the bottom of the hot water storage tank 10. Therefore, when the solar power generation device 3 generates power to generate surplus power, the initially predicted surplus power can be fully utilized.

It should be noted that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention. For example, instead of the heat pump heating means 19, an electric heater heating is possible. Means may be used.

Further, although the surplus power predicting means 32 and the surplus boiling time setting means 33 are provided in the HEMS device 7, they may be provided in the external server device 9 or the communication contents of the HEMS device 7 and the control means 31. May be provided in the control means 31, or conversely, the configuration in the control means 31 may be provided in the HEMS device 7.

Further, the surplus boiling control means 40 is configured to start the surplus boiling at the previously calculated surplus boiling start time td1, but the present invention is not limited to this, and the solar power generation device 3 outputs a predetermined generated power. It is also possible to adopt a configuration in which the surplus boiling is started from the time when the temperature reaches the upper limit.

1 Hot water storage type hot water supply device 3 Photovoltaic power generation device 6 Electric load equipment 10 Hot water storage tank 11 Water supply pipe 19 Heat pump type heating means (heating means)
26 Heating forward pipe (heating circulation circuit)
27 Heating return pipe (heating circulation circuit)
28 Heating circulation pump (heating circulation circuit)
31 control means 32 surplus power predicting means 33 surplus boiling time setting means 34 used hot water amount learning means 35 required heat amount determining means 36 night boiling capacity calculating means 37 surplus boiling capacity calculating means 38 corrected night boiling capacity calculating means 39 night boiling Raising control means 40 Excessive boiling control means 41 Daytime additional boiling capacity calculation means 42 Daytime additional boiling control means

Claims (2)

Solar power generation device,
A hot water storage type hot water supply device having a hot water storage tank, heating means, and a heating circulation circuit;
In the photovoltaic hot water storage system hot water supply system with
Surplus power predicting means for calculating a surplus power prediction value for the next day by subtracting the power consumption prediction value for the next day of the electric load excluding the hot water storage type hot water supply device from the power generation prediction value for the next day of the solar power generation device,
A hot water usage learning means for learning and storing a plurality of days of hot water usage as a learning usage for one day;
Required heat amount determining means for determining the heat amount necessary for the next day from the learning usage amount for the past multiple days as the required heat amount,
The required capacity is calculated by dividing the required heat quantity by the temperature difference between the separately determined boiling target temperature and the feed water temperature, the required capacity and the capacity of the hot water storage tank are compared, and the smaller capacity is boiled at night. Night-time boiling capacity calculation means for increasing capacity,
When the required capacity exceeds the capacity of the hot water storage tank, a daytime boiling capacity calculation means for calculating the daytime boiling capacity by subtracting the capacity of the hot water storage tank from the required capacity,
Excessive boiling time setting means for setting an excessive boiling time that can be used for boiling based on the surplus power predicted value,
Excessive boiling capacity calculation means for calculating an excessive boiling capacity that is boiled to the boiling target temperature at the excessive boiling time,
The required capacity is calculated capacitance boiling correction night by subtracting the surplus water heating capacity from the night boiling capacity is the capacity of the previous SL hot water tank when it exceeds the capacity of the hot water storage tank, the required capacity is the hot water storage Corrected night boiling capacity calculation means for calculating a corrected night boiling capacity by subtracting the surplus boiling capacity from the night boiling capacity which is the required capacity when the capacity of the tank is not exceeded ,
Night-time boiling control means for boiling the corrected night-time boiling capacity at night,
Excessive boiling control means for boiling the excess boiling capacity with excess power in the daytime,
A hot water supply system with a hot water storage system linked to a solar power generator. Daytime boiling control means for boiling the daytime boiling capacity after the completion of the surplus boiling by the surplus boiling control means,
The solar power generation device cooperation hot water storage type hot water supply system according to claim 1, further comprising:

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