JP2016044849A - Photovoltaic power generation device cooperation heat pump hot water storage type hot water supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve accuracy of a boiling operation by power generation surplus power.SOLUTION: A photovoltaic power generation device cooperation heat pump hot water storage type hot water supply system includes: HP power consumption storage means 37 for storing HP power consumption which is power consumption of heat pump type heating means 19 predetermined according to a plurality of boiling target temperatures; surplus power monitoring means 40 for monitoring power generation surplus power of a photovoltaic power generation device 3; surplus power boiling determination means 41 which compares the power generation surplus power and HP power consumption according to the boiling target temperature and, in the case where the power generation surplus power is larger than the HP power consumption, which outputs a surplus power boiling possible signal, and in the case where the power generation surplus power is equal to or less than the HP power consumption, which outputs a surplus power boiling prohibition signal; and control means 35 which performs a boiling operation for boiling hot water in a hot water storage tank 10 to the boiling target temperature by the heat pump type heating means 19, in the case where there is a surplus power boiling possible signal, and which performs a boiling operation in the case where the surplus power boiling prohibition signal.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a heat pump hot water storage type hot water supply system that uses hot power generated by a solar power generation device to boil hot water.

  Conventionally, this type of heat pump hot water storage hot water supply system predicts the surplus power generated by the photovoltaic power generation system, and assumes that hot water is boiled with surplus power generated during the daytime hours. It is known that the amount of boiling is reduced by the amount that can be boiled with generated surplus power (see, for example, Patent Document 1), and when the surplus power generated by the solar power generator exceeds a certain HP power consumption, the boiling operation is started. It was something to do.

JP 2012-172915 A

  However, in this conventional device, the HP power consumption in the heat pump heating means is regarded as a constant value, and when the surplus power generated by the photovoltaic power generator exceeds the constant HP power consumption, the boiling operation is performed. Therefore, when the actual HP power consumption is larger than a certain value, the intention of boiling with the generated surplus power is a problem of boiling with the purchased power, or the actual HP power consumption is smaller than the certain value Even in a situation where boiling can be performed with the generated surplus power, boiling is not performed, and the self-consumption rate of the generated surplus power is reduced.

  Therefore, in order to solve the above-mentioned problems, the present invention provides a solar power generation device, a hot water storage tank for storing hot water, a heat pump heating means for heating the hot water in the hot water storage tank to a target temperature, and a past predetermined period. HP that stores the HP power consumption, which is the power consumption of the heat pump heating means that is determined in advance according to a plurality of boiling target temperatures, and the boiling target determination means that determines the boiling target temperature from the actual use of hot water supply Power consumption storage means, surplus power monitoring means for monitoring the surplus power generated by the solar power generation device, the generated surplus power and the HP power consumption according to the boiling target temperature are compared, and the surplus power generation When power is larger than the HP power consumption, a surplus power boiling possible signal is output, and when the generated surplus power is less than the HP power consumption, surplus power boiling is raised When there is a surplus power boiling judgment means for outputting a prohibition signal and the surplus power boiling possible signal, the heating pump heating means performs a boiling operation for boiling the hot water in the hot water storage tank to the boiling target temperature. And a boiling control means for stopping the boiling operation when the surplus power boiling prohibition signal is present.

  Further, the HP power consumption storage means stores the HP power consumption determined in advance according to a plurality of boiling target temperatures and the outside air temperature, and the surplus power boiling determination means determines the boiling target temperature. The HP power consumption corresponding to the outside air temperature is compared with the generated surplus power, and when the generated surplus power is larger than the HP consumed power, a surplus power boiling possible signal is output, and the generated surplus power is When the power consumption is equal to or lower than the HP power consumption, the surplus power boiling prohibition signal is output.

  According to the present invention, the boiling operation is performed when the generated surplus power is larger than the HP power consumption corresponding to the boiling target temperature. Therefore, in the conventional determination based on the constant HP power consumption, The power generation surplus when the HP power consumption is higher than a certain value and the power generation surplus power is going to boil with the purchased power, or the actual HP power consumption is smaller than the certain value Even in situations where boiling can be done with electric power, boiling is not performed, eliminating the problem of lowering the self-consumption rate of surplus generated power, and determining whether to start or stop proper boiling operation using surplus generated power Can be made.

  In addition, by determining the HP power consumption of the heat pump heating means used when calculating the amount of heating heat in accordance with the outside air temperature in addition to the target boiling temperature, it is possible to determine whether to start or stop the heating operation using the generated surplus power. Accuracy can also be improved.

1 is a system diagram of an embodiment of the present invention. The block diagram of 1st Embodiment. The flowchart for demonstrating the action | operation of 1st Embodiment. The figure for demonstrating the relationship between prediction surplus electric power and HP power consumption. The figure for demonstrating the relationship between power generation surplus electric power and HP power consumption. The block diagram of 2nd Embodiment. The flowchart for demonstrating the action | operation of 2nd Embodiment.

The photovoltaic power generation apparatus cooperation heat pump hot water storage type hot water supply system of 1st Embodiment of this invention is demonstrated based on FIGS.
1 is a heat pump hot water storage water heater that heats up mainly during the night when the unit price of electricity is low, 2 is a distribution board connected to a commercial power source, and 3 is installed on the roof of the house. A photovoltaic power generation device comprising a photovoltaic power generation panel 4 and an inverter 5 that converts the power generated by the photovoltaic power generation panel 4 into an AC power source, 6 is another electrical load device such as an air conditioner, and 7 is a home power management system. HEMS devices (HEMS is an abbreviation for home energy management system), 8 is an external Internet communication network, and 9 is an external server device.

  The HEMS device 7 is connected to the heat pump hot water heater 1 and the solar power generator 3 so as to be able to communicate with each other in a bidirectional manner, and can collect usage information of the heat pump hot water heater 1 and generated power information of the solar power generator 3. Further, it is possible to collect information on the power consumption for each branch circuit of the distribution board 2 and is connected so that necessary information can be exchanged with an external server device 9 via the Internet communication network 8. It is.

  The heat pump hot water storage type water heater 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 branched from the water supply pipe 11. 14 is a mixing valve that mixes hot water from the tapping pipe 12 and water from the hot water supply bypass pipe 13 so as to reach a hot water supply set temperature set by a remote controller (not shown), 15 is a hot water pipe, and 16 is hot water supply. A hot water supply flow rate sensor 17 for detecting the flow rate, a hot water supply temperature sensor 17 for detecting the hot water supply temperature, and a hot water storage temperature sensor 18 for detecting a hot water storage temperature are provided in plural on the side surface of the hot water storage tank 10 at different height positions.

  Reference numeral 19 denotes a heat pump heating means for boiling hot water in the hot water storage tank 10 and heating it to a target temperature. The compressor 20 compresses and conveys the refrigerant to high temperature and high pressure, and exchanges heat between the high temperature and high pressure refrigerant and the water from the hot water storage tank 10. Water refrigerant heat exchanger 21 that performs expansion, expansion means 22 that decompresses and expands the refrigerant after heat exchange, air heat exchanger 23 that evaporates low-pressure refrigerant, a fan 24 that blows outside air to the air heat exchanger 23, and compression It is comprised from the discharge temperature sensor 25 which detects the temperature of the refrigerant | coolant discharged from the machine 20. FIG.

  26 is an HP forward pipe that connects 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 an HP return pipe that connects 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 HP forward pipe 26, 29 is a boiling temperature sensor provided in the HP return pipe 27, 30 is an outside air temperature sensor for detecting the outside air temperature, and 31 is a heat pump hot water heater 1 Control means for controlling the overall operation.

  As shown in FIG. 2, the control means 31 stores the hot water use record storage means for converting the hot water use performance in the past predetermined period into the hot water supply amount at the predetermined temperature from the output of the hot water flow sensor 16 and the hot water set temperature. 32, the hot water storage tank 10 in order to cover the boiling target temperature, which is the temperature of the hot water to be boiled by the heat pump type heating means 19 and stored in the hot water storage tank 10, and the hot water to be used in one day from the past hot water supply usage results for a predetermined period. From the boiling target determination means 33 for determining the boiling target heat amount, which is the amount of heat to be stored, and the boiling target heat amount and the surplus power boiling heat amount to be described later, it is stored in the hot water storage tank 10 at night time. Boiling heat control means 34 for determining the amount of heat to be heated at night, which is the amount of heat to be heated, the heat pump type heating means 19 and the heating circulation pump 28 to control the boiling operation. And a lower control unit 35 is provided.

  As shown in FIG. 2, the HEMS device 7 includes a power generation record of unit time in the past predetermined period of the solar power generation device 3, weather forecast information provided from the external server device 9, and unit time in the home. The surplus prediction means 36 for predicting the generated surplus power according to the time of the next day from the actual power usage of the heat pump, and the heat pump heating means 19 corresponding to each of the plurality of boiling target temperatures of the heat pump hot water heater 1 HP power consumption storage means 37 that stores in advance the HP power consumption, which is the value of the power consumption at the time of boiling up to the boiling target temperature, and the prediction of the surplus power generation according to the time and the HP power consumption according to the boiling target temperature The boiling possible time calculating means 38 for calculating the boiling possible time from the above, the boiling possible time and the heating capacity per unit time of the heat pump heating means 19 stored in advance Surplus power boiling calorie calculation means 39 for calculating the surplus power boiling calorie, which is the amount of heat boiled by the surplus generated power, and the surplus power generated from the generated power of the solar power generation device 3 and the power used in the home and monitored. Comparing the surplus power monitoring means 40, the generated surplus power and the HP power consumption according to the boiling target temperature, and output the surplus power boiling start possible signal when the generated surplus power is larger than the HP power consumption, Surplus power boiling determination means 41 is provided for outputting a surplus power boiling stop signal when the generated surplus power is equal to or less than the HP power consumption.

  Next, the operation of this solar power generation apparatus linked heat pump hot water storage system will be described with reference to FIG. 3. When the heat pump hot water storage system 1 reaches the start time of the night time zone where the power unit price is low, it is heated up. The target determining means 33 determines the boiling target temperature and the boiling target heat quantity from the hot water supply usage record of the past predetermined period stored in the hot water supply usage record storage means 32 (steps S1 and S2). Here, a plurality of boiling target temperatures are provided in increments of 5 ° C. from 65 ° C. to 90 ° C., and the next day of the next day due to the past maximum daily hot water supply amount or variation in daily hot water supply amount. The boiling target temperature and the boiling target heat amount are determined so as to cover the amount used in the above.

  The boiling target temperature determined by the boiling target determination unit 33 is output to the HP power consumption storage unit 37 of the HEMS device 7 (step S3).

  On the other hand, in the HEMS device 7, when the start time of the night time zone comes, the surplus prediction means 36 first predicts the power generation surplus power of the next day, from the power generation results for each unit time in the past predetermined period, from the external server device 9. The generated power for every unit time of the next day is predicted from the weather forecast information for the next day provided (preferably sunshine forecast information) (step S11), and the HEMS device 7 of the past predetermined period stored in the HEMS device 7 The power usage per unit time of the next day is predicted from the power usage results per unit time in the installed home (step S12), and the surplus prediction means 36 predicts the generated power and the predicted usage as shown in FIG. The surplus power generated on the next day is calculated and predicted from the power, and the predicted surplus power is output to the boiling time calculating means 38 (step S13).

  Next, when the HP power consumption storage unit 37 receives the input of the boiling target temperature from the boiling target determination unit 33 (step S14), the HP power consumption storage unit 37 selects the HP power consumption corresponding to the input boiling target temperature and boils. It is output to the possible increase time calculation means 38 (step S15).

  In the boiling possible time calculation means 38, as shown in FIG. 4, the predicted surplus power and the HP power consumption are compared, and the boiling is the time that the predicted surplus power exceeds the HP power consumption corresponding to the boiling target temperature. The possible time is calculated, and the calculated boiling time is output to the surplus power boiling heat amount calculation means 39 (step S16).

  The surplus power boiling heat quantity calculating means 39 calculates the surplus power boiling heat quantity by multiplying the heating capacity per unit time of the heat pump type heating means 19 stored in advance and the boiling possible time (step S17). It outputs to the night heating heat amount calculation means 34 (step S18).

  When the night boiling heat quantity calculation means 34 of the heat pump hot water storage type hot water supply apparatus 1 receives the input of the surplus power boiling heat quantity (step S4), the surplus power is calculated from the boiling target heat quantity determined by the boiling target determination means 33. The amount of boiling heat is reduced to determine the amount of heating at night (step S5) and output to the boiling control means 35.

  In the boiling control means 35, an appropriate boiling start time is calculated so as to complete the boiling heat amount at the end time of the night time zone (step S6). When the boiling start time comes, the heat pump heating means 19 and The heating circulation pump 28 is driven to perform boiling operation so that hot water heated to the boiling target temperature is sequentially stacked from the upper part of the hot water storage tank 10.

  And in the daytime time zone other than the night time zone, the surplus power boiling judgment means 41 of the HEMS device 7 has the current solar power generation device 3 monitored by the surplus power monitoring means 40 as shown in FIG. When the surplus power generated by subtracting the current power used from the generated power exceeds the HP power consumption corresponding to the boiling target temperature, a surplus power boiling enable signal is output to the heat pump hot water storage system 1 and the surplus power is boiled When the power consumption falls below the HP power consumption corresponding to the target temperature, a surplus power boiling prohibition signal is output to the heat pump hot water storage type hot water supply apparatus 1.

  In the boiling control means 35 of the heat pump hot water storage type hot water supply apparatus 1, when a surplus power boiling possible signal is input, the boiling control means 35 confirms the amount of hot water in the hot water storage tank 10 and uses the amount of hot water that can be heated up. If there is, the boiling operation is started, and the boiling operation is continued until the inside of the hot water storage tank 10 is heated up to a full tank or the surplus power boiling prohibition signal from the surplus power boiling judgment means 41 of the HEMS device 7 is inputted. I try to continue.

  In addition, when the amount of hot water in the hot water storage tank 10 is small, or when the time from the start of the boiling operation to the input of the surplus power boiling prohibition signal is shorter than the predetermined minimum operation duration, the surplus Even if the power boiling prohibition signal is input, the boiling operation is continued without immediately stopping the boiling operation.

  In this way, the HP power consumption of the heat pump type heating means 19 used when predicting and calculating the amount of heat to heat up the hot water with the generated surplus power of the solar power generation device 3 can be brought closer to the actual condition by responding to the target heating temperature. It is possible to accurately predict the amount of heat generated during the daytime due to surplus power generated, and to boil up an appropriate amount during the nighttime period, so it is possible to suppress hot water outages and unnecessary power purchases during the daytime period. The surplus power generated in the belt can be used for boiling, and the self-consumption rate of the surplus power generated can be improved. In addition to being able to improve the efficiency of the heat pump hot water storage hot water supply system, it is possible to suppress excessive power consumption in the night time zone.

  In the heating operation in the daytime period, the heating operation is performed when the generated surplus power is larger than the HP power consumption corresponding to the boiling target temperature. Therefore, the conventional constant HP power consumption is used. In the case where the actual HP power consumption is larger than a certain value, the problem of boiling up with the surplus power generated when the actual HP power consumption is larger than a certain value or the actual HP power consumption is smaller than the certain value. In the situation where boiling can be done with the generated surplus power when it is small, boiling is not performed, and the problem that the self consumption rate of the generated surplus power is reduced, the start of appropriate boiling operation with the generated surplus power, A stop decision can be made.

  Next, 2nd Embodiment of this invention is described based on FIG. 1, FIG. Here, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the second embodiment, as shown in FIG. 6, the outside air temperature predicting means 42 for predicting the outside air temperature in the daytime day of the next day is provided from the past transition of the outside air temperature, etc., and the HP power consumption memory is stored. Unlike the first embodiment, the means 37 and the surplus power boiling heat quantity calculation means 39 are provided on the heat pump hot water storage type hot water heater 1 side, and the HP power consumption storage means 37 includes a plurality of heat pump hot water storage type hot water heaters 1. In correspondence with each combination of a boiling target temperature and a plurality of outside air temperature ranges, HP power consumption, which is a value of power consumption when the heat pump type heating means 19 is heated to the boiling target temperature, is stored in advance. Yes.

  Next, the operation of the solar power generation apparatus-linked heat pump hot water storage system will be described with reference to FIG. 7. When the heat pump hot water storage system 1 reaches the start time of the night time zone where the unit price of electricity is low, it is heated up. The target determining unit 33 determines the boiling target temperature and the boiling target heat amount from the hot water supply usage record of the past predetermined period stored in the hot water supply usage record storage unit 32 (steps S21 and S22).

  Next, the HP power consumption storage unit 37 selects HP power consumption corresponding to the outside air temperature predicted by the outside air temperature predicting unit 42 and the boiling target temperature determined by the boiling target determining unit 33 (step S23). ) And output to the boiling possible time calculating means 38 (step S24).

  On the other hand, in the HEMS device 7, when the start time of the night time zone comes, the surplus prediction means 36 first predicts the power generation surplus power of the next day, from the power generation results for each unit time in the past predetermined period, from the external server device 9. The generated power for each unit time of the next day is predicted from the weather forecast information for the next day provided (preferably sunshine forecast information) (step S31), and the HEMS device 7 of the past predetermined period stored in the HEMS device 7 The power usage per unit time of the next day is predicted from the power usage results per unit time in the installed home (step S32), and the surplus prediction means 36 predicts the generated power and the predicted usage as shown in FIG. The power generation surplus power of the next day is calculated and predicted from the power, and the predicted surplus power is output to the boiling time calculating means 38 (step S33).

  When receiving the HP power consumption input from the HP power consumption storage unit 37 (step S34), the boiling time calculation unit 38 compares the predicted surplus power with the input HP power consumption as shown in FIG. Then, the boiling possible time, which is the time that the predicted surplus power exceeds the HP power consumption corresponding to the boiling target temperature and the outside air temperature, is calculated (step S35), and the calculated boiling possible time is calculated as the surplus power boiling heat amount. It outputs to the means 39 (step S36).

  And in the heat pump hot water storage type hot water supply apparatus 1, when receiving the input of the boiling possible time from the boiling possible time calculating means 39 (step S25), the surplus power boiling heat amount calculating means 39 stores the heat pump type stored in advance. The heating power per unit time of the heating means 19 is multiplied by the possible boiling time to calculate the surplus electric power heating heat amount (step S26), and the night heating heat amount calculating means 34 is determined by the boiling target determining means 33. The surplus power boiling heat amount is subtracted from the boiling target heat amount to determine the night boiling heat amount (step S27) and output to the boiling control means 35.

  The boiling control means 35 calculates an appropriate boiling start time so that the boiling heat amount at the end of the night time period is completed (step S28). When the boiling start time is reached, the heat pump heating means 19 and The heating circulation pump 28 is driven to perform boiling operation so that hot water heated to the boiling target temperature is sequentially stacked from the upper part of the hot water storage tank 10.

  And in the daytime time zone other than the night time zone, the surplus power boiling judgment means 41 of the HEMS device 7 has the current solar power generation device 3 monitored by the surplus power monitoring means 40 as shown in FIG. When the surplus power generated by subtracting the current power used from the generated power exceeds the HP power consumption corresponding to the boiling target temperature and the current outside air temperature, a surplus power boiling possible signal is output to the heat pump hot water storage hot water supply device 1 to generate power. When the surplus power falls below the HP power consumption corresponding to the boiling target temperature and the outside air temperature, a surplus power boiling prohibition signal is output to the heat pump hot water storage type hot water supply device 1.

  In the heat pump hot water storage type hot water supply device 1, when a surplus power boiling possible signal is input, the boiling control means 35 confirms the amount of hot water in the hot water storage tank 10, and if the amount is hot enough to be heated, the boiling operation is performed. The boiling operation is continued until the inside of the hot water storage tank 10 is boiled up to a full tank or a surplus power boiling prohibition signal is input from the HEMS device 7.

  In addition, when the amount of hot water in the hot water storage tank 10 is small, or when the time from the start of the boiling operation to the input of the surplus power boiling prohibition signal is shorter than the predetermined minimum operation duration, the surplus Even if the power boiling prohibition signal is input, the boiling operation is continued without immediately stopping the boiling operation.

  In this way, the HP power consumption of the heat pump type heating means 19 used when predicting and calculating the amount of heat to heat up the hot water with the generated surplus power of the solar power generation device 3 can be brought closer to the actual condition by responding to the target heating temperature. It is possible to accurately predict the amount of heat generated during the daytime due to surplus power generated, and to boil up an appropriate amount during the nighttime period, so it is possible to suppress hot water outages and unnecessary power purchases during the daytime period. The surplus power generated in the belt can be used for boiling, and the self-consumption rate of the surplus power generated can be improved. In addition to being able to improve the efficiency of the heat pump hot water storage hot water supply system, it is possible to suppress excessive power consumption in the night time zone.

  In the heating operation in the daytime period, the heating operation is performed when the generated surplus power is larger than the HP power consumption corresponding to the boiling target temperature. Therefore, the conventional constant HP power consumption is used. In the case where the actual HP power consumption is larger than a certain value, the problem of boiling up with the surplus power generated when the actual HP power consumption is larger than a certain value or the actual HP power consumption is smaller than the certain value. Even in a situation where boiling can be performed with surplus power generated when it is small, boiling is not performed, and the problem that the self-consumption rate of surplus generated power is reduced is solved, and appropriate boiling operation with surplus generated power is performed be able to.

  Further, by determining the HP power consumption of the heat pump type heating means 19 used for the prediction calculation of the amount of heating heat according to the outside air temperature in addition to the target boiling temperature, the accuracy of the prediction of the amount of boiling heat based on the surplus power generated is further improved. Furthermore, it is possible to improve the accuracy of the determination of the start and stop of the boiling operation by the generated surplus power.

  The present invention is not limited to the first and second embodiments described above, and can be modified without changing the gist. For example, the boiling target determination means 33 and the night heating heat amount calculation means. It is also possible to provide a part or all of the calculation functions including 34 in the HEMS device 7 side or the external server device 9 as long as the system can perform an equivalent operation.

  In the second embodiment, the HP power consumption storage unit 37 stores the HP power consumption for each combination of the boiling target temperature and the outside air temperature. However, the present invention is not limited to this, and for each boiling target temperature. It is good also as a structure which memorize | stored HP power consumption and memorize | stored the relational expression which correct | amends this according to outside temperature, or memorize | stored the relational expression from which HP power consumption is derived | led-out by boiling-up target temperature and outside temperature. .

  Further, the surplus power boiling determination unit 41 uses the HP power consumption according to the current outside air temperature, but is not limited to this, and the HP power consumption according to the outside temperature predicted by the outside air temperature prediction unit 42 may be used. Well, the outside air temperature predicting means 42 predicts from the transition of the outside air temperature. However, the present invention is not limited to this, and the outside air temperature predicting means 42 is configured to predict the rough outside air temperature based on the water supply temperature, the calendar function, etc. It is good also as a structure by which the outdoor temperature prediction information of this is input.

DESCRIPTION OF SYMBOLS 1 Heat pump hot water storage type hot water heater 3 Solar power generation device 10 Hot water storage tank 19 Heat pump type heating means 33 Heating target determination means 35 Heating control means 37 HP power consumption storage means 40 Surplus power monitoring means 41 Surplus power boiling judgment means

Claims (2)

A solar power generator,
A hot water storage tank for storing hot water,
A heat pump heating means for heating up the hot water in the hot water tank to a target temperature;
A boiling target determination means for determining the boiling target temperature from the actual use of hot water in the past predetermined period;
HP power consumption storage means for storing HP power consumption, which is power consumption of the heat pump heating means determined in advance according to a plurality of boiling target temperatures,
Surplus power monitoring means for monitoring surplus power generated by the solar power generation device;
The generated power surplus power is compared with the HP power consumption according to the boiling target temperature, and when the generated power surplus power is larger than the HP power consumption, a surplus power boiling possible signal is output, and the generated power surplus power Surplus power boiling judgment means for outputting a surplus power boiling prohibition signal when the power consumption is equal to or less than the HP power consumption;
When the surplus power boiling possible signal is present, the heat pump heating means performs boiling operation for boiling hot water in the hot water storage tank to the boiling target temperature, and when the surplus power boiling prohibition signal is present A solar power generator-linked heat pump hot water storage type hot water supply system characterized by comprising a boiling control means for stopping a boiling operation. The HP power consumption storage means stores the HP power consumption determined in advance according to a plurality of boiling target temperatures and the outside air temperature,
The surplus power boiling judgment means compares the HP power consumption corresponding to the boiling target temperature and the outside air temperature with the generated surplus power, and surplus power is generated when the generated surplus power is greater than the HP power consumption. 2. A solar power generation apparatus linked heat pump according to claim 1, wherein a power boiling enable signal is output, and a surplus power boiling prohibition signal is output when the surplus power generated is equal to or less than the HP power consumption. Hot water storage hot water system.

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