JP2022070129A - Photovoltaic power generation device coordination hot water storage type hot water supply device - Google Patents

Abstract

To perform boiling-up using power generation amount by sunlight even in a cloudy forecast, while avoiding a risk of buying electricity.SOLUTION: A control device 31 of a hot water storage type hot water supply device 1 does not perform uniform control when a boiling-up possible time zone corresponds to "cloudy," on the basis of a determination result due to a weather information determining portion 33A, and suitably performs adjustment such as switching the presence/absence of daytime boiling-up operation, and changing an actual operation time zone, according to the contents of weather information in a time zone immediately before/after the boiling-up possible time zone. After ascertaining what kind of cloudy sky the boiling time zone is, fine boiling control is implemented, thereby avoiding a risk of buying electricity and capable of performing boiling-up using power generation amount by sunlight even in a cloudy forecast.SELECTED DRAWING: Figure 6

Description

The present invention relates to a hot water storage type hot water supply device linked with a photovoltaic power generation device that performs boiling operation using electric power generated by photovoltaic power generation.

Conventionally, in this type of photovoltaic power generation device linked hot water storage type hot water supply device, as described in Patent Document 1, the photovoltaic power generation device emits sunlight in the case of a sunny weather forecast with good sunshine conditions based on weather information. In some cases, light is received to generate electricity, and a hot water storage type hot water supply device uses the generated power to heat the hot water in the hot water storage tank during the daytime boiling operation.

Japanese Unexamined Patent Publication No. 2013-110951

In such a boiling operation using the electric power generated by solar power generation, at least the generated electric power value needs to be large to some extent. Specifically, for example, the surplus power consumption predicted value obtained by subtracting the load power consumption predicted value consumed by the electric load excluding the hot water storage type hot water supply device from the power generation predicted value of the photovoltaic power generation device on the next day of the desired day is the hot water storage type. When the estimated power consumption of the device consumed by the hot water supply device is equal to or higher than the predicted value, the boiling operation can be executed by the electric power from the photovoltaic power generation device.

In that case, the amount of boiling in the boiling operation using solar power generation in the daytime zone of the next day is expected, and the nighttime boiling is executed by using the electric power purchased from outside the system in the nighttime zone other than the daytime zone. It is possible to reduce the boiling amount (power-purchased boiling amount) in the upper operation, and it is possible to reduce the cost. At that time, for example, in the daytime zone, the control mode is such that the boiling operation using the solar power generation can be executed, and in the nighttime zone, the boiling operation is performed by the purchased electric power without using the solar power generation. It can be an embodiment.

Here, the weather information used for predicting the generated power is usually issued in the form of "sunny forecast", "cloudy forecast", "rain forecast", etc. for each predetermined time segment. In the case of rain forecast, it is sufficient to perform normal night boiling operation without performing daytime boiling operation because power generation by the photovoltaic power generation device can hardly be expected. On the other hand, in the case of cloudy weather forecast, it is possible to expect power generation by the photovoltaic power generation device because a certain amount of sunshine can be secured in the so-called light cloudy weather, but there is a possibility that the amount of power generation can hardly be expected in the case of rain clouds. be.

Therefore, in the above-mentioned conventional method, for example, in the case of cloudy weather forecast, if the daytime boiling operation is uniformly performed, in the case of rain clouds or the like, the amount of power generation may be insufficient and power may be purchased, resulting in high cost. On the contrary, if the daytime boiling operation is not performed uniformly, there is a problem that even if there is a sufficient amount of power generation in the case of light cloudiness, it cannot be utilized and waste may occur.

In order to solve the above problems, claim 1 of the present invention includes a hot water storage tank for storing hot water and a heating means for heating the hot water, and the heating means is the hot water storage tank in cooperation with a solar power generation device. In the solar power generation device linked hot water storage type hot water supply device that heats the hot water in the room, the first weather information with fine weather information, the second weather information with rainy weather information, and the third weather information with cloudy weather information are available. In the weather information acquisition means for acquiring the next day's weather information for each predetermined time division on the day after the desired day, which is classified into one of a plurality of meteorological information including, and in the daytime zone excluding the predetermined night zone on the next day. The boiling time zone in which the daytime boiling operation using the electric power from the solar power generation device can be executed by the solar power generation device linked hot water storage type hot water supply device is set to any of the plurality of meteorological information. The boiling of the heating means according to the determination result of the first meteorological information determination means and the first meteorological information determination means for determining whether or not it is applicable based on the next day weather information acquired by the meteorological information acquisition means. It has a boiling control means for controlling the upper operation, and the boiling control means has the daytime in the boiling possible time zone when the boiling possible time zone corresponds to the first meteorological information. The heating means is controlled so as to complete the night boiling operation in the night zone while performing the boiling operation and leaving the same capacity as the boiling capacity of the daytime boiling operation unheated. When the boilable time zone corresponds to the second meteorological information, the night boil operation is executed in the night zone without performing the daytime boil operation in the boilable time zone. When the heating means is controlled and the boilable time zone corresponds to the third meteorological information, the adjacent pre-adjacent time zone adjacent before the boilable time zone and adjacent after the boilable time zone are adjacent. Then, depending on the content of the next day weather information in the adjacent time zone, the presence or absence of the daytime boiling operation or the actual operation time zone in which the daytime boiling operation is actually performed is adjusted.

Further, in claim 2, in the boiling control means, the boiling possible time zone corresponds to the third weather information, and the front adjacent time zone or the rear adjacent time zone corresponds to the first weather information. If applicable, the daytime boiling operation is performed during the boiling time zone, and the same capacity as the boiling capacity due to the daytime boiling operation is left unheated, and the nighttime boiling operation is performed in the nighttime zone. The heating means is controlled so as to complete the above.

Further, in claim 3, when the boiling control means corresponds to the third meteorological information in the boiling possible time zone and corresponds to the first meteorological information in the preceding adjacent time zone, the boiling control means. The daytime boiling operation is performed in the first time zone immediately after the preceding adjacent time zone in the upper possible time zone.

Further, in claim 4, when the boiling control means corresponds to the third meteorological information in the boiling possible time zone and corresponds to the first meteorological information in the rear adjacent time zone, the boiling control means corresponds to the first meteorological information. The daytime boiling operation is performed in the second time zone immediately before the rear adjacent time zone in the upper possible time zone.

Further, in claim 5, in the boiling control means, the boiling possible time zone corresponds to the third weather information, and both the front adjacent time zone and the rear adjacent time zone are the first. When it does not correspond to the meteorological information, the heating means is controlled so that the nighttime boiling operation is executed in the nighttime zone without performing the daytime boiling operation in the boiling possible time zone.

Further, in claim 6, in the boiling control means, the boiling possible time zone corresponds to the third weather information, and both the front adjacent time zone and the rear adjacent time zone are the first. When it does not correspond to the meteorological information, the heating means is controlled so as to execute the daytime boiling operation in the third time zone including at least the first half of the boiling possible time zone.

Further, in order to solve the above problem, in claim 7 of the present invention, the hot water storage tank for storing hot water and the heating means for heating the hot water are provided, and the heating means is the hot water storage in cooperation with the solar power generation device. In the solar power generation device linked hot water storage type hot water supply device that heats the hot water in the tank, the first weather information has fine weather information, the second weather information has rainy weather information, and the third weather information has cloudy weather information. Meteorological information acquisition means for acquiring the next day's weather information for each predetermined time category on the day after the desired day, which is classified into one of a plurality of weather information including In the designated time zone acquisition means for acquiring the designated operation time zone, which is predetermined in the above and is designated to execute the daytime boiling operation using the electric power from the solar power generation device, and the designated time zone acquisition means. A second weather information determination means for determining which of the plurality of weather information the acquired designated operation time zone corresponds to based on the next day weather information acquired by the weather information acquisition means, and the above. It has a boiling control means for controlling the boiling operation of the heating means according to a determination result by the second weather information determining means, and the boiling control means has the designated operation time zone of the first. If it corresponds to the weather information, the daytime boiling operation is performed during the designated operation time zone, and the same capacity as the boiling capacity due to the daytime boiling operation is left unheated at night in the nighttime zone. The heating means is controlled so as to complete the boiling operation, and when the designated operation time zone corresponds to the second weather information, the daytime boiling operation in the designated operation time zone is not performed. The heating means is controlled so as to execute the night boiling operation in the night zone, and when the designated operation time zone corresponds to the third weather information, the designated operation among the boiling possible time zones is performed. The content of the next day weather information in a time zone other than the time zone, a front adjacent time zone adjacent before the boiling possible time zone, or a rear adjacent time zone adjacent after the boiling possible time zone. Correspondingly, the presence / absence of the daytime boiling operation or the actual operation time zone in which the daytime boiling operation is actually performed is adjusted.

Further, in claim 8, in the boiling control means, the designated operating time zone acquired by the designated time zone acquisition means corresponds to the third weather information, and the boiling possible time zone is the first. (2) When it does not correspond to the weather information, the heating means is controlled so as to execute the daytime boiling operation in the designated operation time zone.

Further, claim 9 further has a designated time zone acquisition means for acquiring a designated operation time zone designated to execute the daytime boiling operation among the boiling possible time zones, and the boiling is described. In the control means, the designated operating time zone acquired by the designated time zone acquisition means corresponds to the third weather information, and at least a part of the boiling possible time zone corresponds to the second weather information. In this case, the heating means is controlled so that the nighttime boiling operation is performed in the nighttime zone without performing the daytime boiling operation in the boiling possible time zone.

Further, claim 10 further has a designated time zone acquisition means for acquiring a designated operation time zone designated to execute the daytime boiling operation among the boiling possible time zones, and the boiling is described. In the control means, the designated operating time zone acquired by the designated time zone acquisition means corresponds to the third weather information, and the boiling possible time zone and the time zone adjacent to the second weather zone before and after the boiling time zone correspond to the third weather information. When the information does not correspond, the heating means is controlled so as to execute the daytime boiling operation in the designated operation time zone.

Further, claim 11 further includes a designated time zone acquisition means for acquiring a designated operation time zone designated to execute the daytime boiling operation among the boiling possible time zones, and said boiling. In the control means, the designated operation time zone acquired by the designated time zone acquisition means corresponds to the third meteorological information, and at least a part of the boiling possible time zone and the time zones adjacent to the front and back thereof. When corresponds to the second meteorological information, the heating means is controlled so as to execute the night boiling operation in the night zone without performing the daytime boiling operation in the boiling possible time zone. be.

According to claim 1 of the present invention, when the boiling control means controls the boiling operation of the heating means according to the determination result by the first weather information determining means, the boiling possible time during which the daytime boiling operation can be executed is possible. The control is finely switched according to which weather information the band corresponds to.
When it corresponds to the first meteorological information mainly corresponding to fine weather, the daytime boiling operation is performed during the boiling time zone, and the same capacity as the daytime boiling operation is left unheated in the nighttime zone prior to that. Try to perform night boiling operation.
When it corresponds to the second meteorological information mainly corresponding to rainy weather, the daytime boiling operation is not performed in the boiling time zone, and the normal night boiling operation is performed in the nighttime zone prior to the daytime boiling operation.
Then, when it corresponds to the third weather information mainly corresponding to cloudy weather, it is appropriate according to the content of the next day weather information in the front adjacent time zone or the rear adjacent time zone adjacent to the front and back of the boiling possible time zone. Make adjustments such as switching the presence or absence of daytime boiling operation and changing the actual operation time zone. As described above, according to the invention of claim 1, when cloudy weather is expected in the boilable time zone, the control is not uniform, and the boilable time zone is determined based on the weather information of the time zones before and after. After ascertaining what kind of cloudy sky it is, fine boiling control will be implemented. As a result, it is possible to use the amount of power generated by solar power to boil even if it is a cloudy forecast, while avoiding the risk of purchasing electricity.

Also, if sunny weather is expected at least one of the time before and after the boiling time, for example, the weather is slightly downhill from the sunny weather, but the clouds are not so thick during the boiling time, or the weather. However, it is highly possible that the weather is recovering significantly toward the clear sky and the number of clouds is decreasing during the boiling time, so it is highly possible that some sunshine can be obtained during the boiling time. Therefore, according to claim 2, when the boiling possible time zone corresponds to the third weather information and the front / rear adjacent time zone corresponds to the first weather information, the daytime boiling occurs in the boiling possible time zone. The upper operation is performed, and the night boiling operation is performed by subtracting the boiling capacity of the daytime boiling operation. As a result, even if it is a cloudy forecast, it is possible to reliably use the amount of power generated by sunlight to boil.

Also, if sunny weather is expected before the boilable time zone, the weather is a little downhill from the fine weather, but the clouds are not so thick during the boilable time zone, and there is a possibility that some sunshine can be obtained. Is high. According to claim 3, when such a case is dealt with and the preceding adjacent time zone corresponds to the first weather information, the first time zone, which is the earlier time zone of the boiling possible time zone, is described above. Since the daytime boiling operation is performed, it is possible to reliably boil even if it is forecast to be cloudy.

Also, if sunny weather is expected after the boilable time zone, the weather is recovering significantly toward the clear sky, and there is less cloud during the boilable time zone, so there is a possibility that some sunshine can be obtained. Is high. According to claim 4, when such a case is dealt with and the rear adjacent time zone corresponds to the first weather information, the second time zone, which is the later time zone of the boilable time zone, is set. Since the daytime boiling operation is performed, it is possible to reliably boil even if it is forecast to be cloudy.

In addition, if there is no expectation of sunny weather before and after the boilable time zone, there is a high possibility that the sky is covered with clouds during the boilable time zone, so sunshine is available during the boilable time zone. Is unlikely to be obtained. Therefore, according to claim 5, when the boiling possible time zone corresponds to the third weather information and neither the front nor the rear adjacent time zone corresponds to the first weather information, the boiling possible time zone is set. The daytime boiling operation is not performed, and the normal nighttime boiling operation is performed without expecting the boiling capacity of the daytime boiling operation. As a result, it is possible to avoid the risk of purchasing electricity, which causes a high cost in the daytime.

In addition, if there is no expectation of fine weather before and after the boiling time zone, for example, it may be covered with clouds throughout the boiling time zone, but the weather is not changed and the light cloudy state continues. There is a possibility, and in that case, there is a possibility that sunshine can be obtained in the boiling time zone to some extent. Therefore, according to claim 6, even if the boilable time zone corresponds to the third meteorological information and neither the front nor the rear adjacent time zone corresponds to the first meteorological information, the boilable time The daytime boiling operation is performed in the third time zone, which is relatively early in the zone. As a result, it is possible to prevent waste from occurring because the power generation amount cannot be utilized even in the case of light cloudiness or the like.

Further, according to claim 7, when the boiling control means controls the boiling operation of the heating means according to the determination result by the second weather information determination means, the designation acquired by the designated time zone acquisition means. The control is finely switched according to which weather information the operating time zone corresponds to.
When it corresponds to the first weather information mainly corresponding to the sunny weather, the daytime boiling operation is performed during the designated operation time zone, and in the nighttime zone prior to that, the same capacity as the daytime boiling operation is left unheated at night. Try to perform boiling operation.
When it corresponds to the second weather information mainly corresponding to rainy weather, the daytime boiling operation is not performed in the designated operation time zone, and the normal nighttime boiling operation is performed in the nighttime zone prior to the daytime boiling operation.
Then, when it corresponds to the third weather information mainly corresponding to cloudy weather, the time zone other than the designated operation time zone in the boiling possible time zone, or the preceding adjacent time adjacent to the front and back of the boiling possible time zone. Depending on the content of the weather information on the next day in the zone or the adjacent time zone, adjustments such as switching the presence or absence of daytime boiling operation and changing the actual operation time zone are made as appropriate. As described above, according to the invention of claim 7, when cloudy weather is expected in the designated operation time zone, the control is not uniform, and the control is performed based on the weather information of the boiling time zone and the time zone before and after the boiling time zone. After ascertaining what kind of cloudy sky the designated operating time zone is, fine boiling control will be implemented. As a result, it is possible to use the amount of power generated by solar power to boil even if it is a cloudy forecast, while avoiding the risk of purchasing electricity.

Further, for example, the operator uses an external information terminal or the like to specify a desired time zone (designated operation time zone) in which the hot water storage type hot water supply device is desired to perform daytime boiling operation from the boiling time zone. Can be done. If rainy weather is not expected during the boiling time even if the designated operating time is expected to be cloudy, for example, the weather is slightly downhill from fine weather, but rain clouds still occur during the designated operating time. There is a high possibility that the weather has not been recovered, or that it has been a sufficient time since the weather started to recover and no rain clouds remain during the designated operating hours, so there is a possibility that some sunshine can be obtained during the designated operating hours. Is high. According to claim 8, the daytime boiling operation is performed during the boiling time zone in response to such a case. As a result, even if it is a cloudy forecast, it is possible to reliably use the amount of power generated by sunlight to boil.

Also, if the designated operating time zone is expected to be cloudy and rainy weather is expected somewhere in the boiling time zone, for example, the weather is downhill and rain clouds are beginning to occur during the designated operating time zone. There is a high possibility that rain clouds will remain in the designated operating time zone because it has not been long since the weather began to recover, so it is unlikely that sunshine will be obtained during the designated operating time zone. According to claim 9, in response to such a case, the daytime boiling operation is not performed during the boiling time zone, and the normal nighttime boiling operation is not expected for the boiling capacity of the daytime boiling operation. To do. As a result, it is possible to avoid the risk of purchasing electricity, which causes a high cost in the daytime.

In addition, even if the designated operation time zone is expected to be cloudy, if rainy weather is not expected in the boiling time zone and the time zone adjacent to it, for example, the weather is slightly downhill from fine weather, but the designated operation There is a high possibility that the clouds are not so thick in the time zone, or the weather is recovering greatly toward the clear sky and the clouds are decreasing in the designated driving time zone, so in the designated driving time zone. It is likely that you will get some sunshine. According to claim 10, the daytime boiling operation is performed in the designated operation time zone in response to such a case. As a result, even if it is a cloudy forecast, it is possible to reliably use the amount of power generated by sunlight to boil.

Even if the designated operation time zone is expected to be cloudy, if rainy weather is expected in at least a part of the boiling time zone and the time zone adjacent to it, for example, clouds will continue during the designated operation time zone. Since there is a high possibility that it is covered with water, it is unlikely that sunshine will be obtained during the boiling time. According to claim 11, in response to such a case, the daytime boiling operation is not performed during the designated operation time zone, and the normal nighttime boiling operation is performed in which the boiling capacity of the daytime boiling operation is not expected. Try to do it. As a result, it is possible to avoid the risk of purchasing electricity, which causes a high cost in the daytime.

System configuration diagram of a hot water storage type hot water supply system linked with a photovoltaic power generation device according to an embodiment of the present invention Functional block diagram of the control device of the hot water storage type hot water supply device Explanatory diagram showing an example of acquired weather information Graph diagram that conceptually shows the temporal behavior of the amount of power generated by photovoltaic power generation and the amount of power consumed by electric load equipment when the weather is fine. Graph diagram conceptually showing the temporal behavior of the amount of power generated by photovoltaic power generation and the amount of power consumed by electric load equipment when the weather is rainy or cloudy. Explanatory diagram showing an example of time division setting of daytime boiling operation when various weather information is acquired for the boiling time zone and other time zones. Flow chart showing the control procedure executed by the control device of the hot water storage type hot water supply device Functional block diagram of the control device of the hot water storage type hot water supply device in the modified example in which the time of daytime boiling operation is specified from the information terminal. Explanatory diagram showing an example of setting the time division of daytime boiling operation when various weather information is acquired for the designated operation time zone, boiling possible time zone and other time zones. Flow chart showing the control procedure executed by the control device of the hot water storage type hot water supply device

Next, an embodiment of the present invention will be described with reference to the drawings.

<System configuration>
FIG. 1 shows the system configuration of the hot water storage type hot water supply system linked with the photovoltaic power generation device of the present embodiment. In addition, in FIG. 1, in order to prevent the complexity of the illustration, some of the signal transmission / reception described later are omitted from the illustration. In FIG. 1, the photovoltaic power generation device linked hot water storage type hot water supply system 100 of the present embodiment is a heat pump type hot water storage type hot water supply device 1 installed in a building such as a house (not shown), and power distribution connected to a commercial power supply 49. A solar power generation device 3 equipped with a panel 2, a solar power generation panel 4 installed on the roof of the house, an inverter 5 for converting the power generated by the solar power generation panel 4 into an AC power source, and a hot water storage type. Information that constitutes an load other than the hot water supply device 1, for example, an electric load device 6 including an air conditioner (indicated simply as "air conditioner" in FIG. 1), a network communication network 8, a server 9, a smartphone, and the like. It has a terminal 200 and.

At this time, the hot water storage type hot water supply device 1 is provided with a control device 31, and the control device 31 is connected to the server 9 and the information terminal 200 via the network communication network 8 to mutually exchange necessary information. It is possible to exchange.

The hot water storage type hot water supply device 1 includes a remote control device 50, a hot water storage tank 10 for storing hot water, a water supply pipe 11 for supplying water to the bottom of the hot water storage tank 10, and a hot water discharge pipe 12 for discharging hot water from the top of the hot water storage tank 10. A mixing valve that mixes the water supply bypass pipe 13 branched from the water supply pipe 11, the hot water from the hot water outlet pipe 12, and the water from the water supply bypass pipe 13 so as to reach the hot water supply set temperature set by the remote control device 50. 14, a hot water supply pipe 15 that supplies hot water to a hot water supply terminal (not shown), a hot water supply flow rate sensor 16 that detects the hot water supply flow rate and outputs a corresponding detection signal, and a hot water supply temperature sensor 17 that detects a hot water supply temperature and outputs a corresponding detection signal. It also has a hot water storage temperature sensor 18 that detects the hot water storage temperature of the hot water in the hot water storage tank 10 and outputs a corresponding detection signal. A plurality of the hot water storage temperature sensors 18 are provided on the side surface of the hot water storage tank 10 at different height positions. Each of the plurality of hot water storage temperature sensors 18 detects, for example, a hot water temperature equal to or higher than a predetermined threshold value set in advance corresponding to the temperature of the hot water in a sufficiently heated state, and a corresponding detection signal. Is configured to be output to the control device 31. As a result, the control device 31 is in a sufficiently heated state in the hot water storage tank 10 based on how many sensors out of the plurality of hot water storage temperature sensors 18 output the detection signal. The amount of hot water (that is, the amount of hot water stored) can be detected.

Further, the hot water storage type hot water supply device 1 further has a heat pump device 19 (corresponding to a heating means and a heat pump type heating means) for heating the hot water in the hot water storage tank 10 to a boiling target temperature. The heat pump device 19 includes a compressor 20 that compresses and conveys a refrigerant to a high temperature and a high pressure, a water refrigerant heat exchanger 21 that exchanges heat between the high temperature and high pressure refrigerant and water from the hot water storage tank 10, and the water refrigerant. An expansion valve 22 that decompresses and expands the refrigerant after heat exchange in the heat exchanger 21, an air heat exchanger 23 that exchanges heat between the outside air and the low-pressure refrigerant to evaporate the low-pressure refrigerant, and the air heat exchanger 23 to exchange the outside air. A blower 24 (blower fan) that blows air, a discharge temperature sensor 25 that detects the temperature of the refrigerant discharged from the compressor 20 and outputs a corresponding detection signal to the control device 31, and, for example, a ventilation path in the blower 24. It is provided above and includes an outside air temperature sensor 30 (outside air sensor) that detects the outside air temperature and outputs a corresponding detection signal to the control device 31.

Further, the hot water storage type hot water supply device 1 further connects the control device 31 that controls the operation of the entire hot water storage type hot water supply device 1, the lower portion of the hot water storage tank 10, and the water side inlet of the water refrigerant heat exchanger 21. A heating return pipe 27 connecting the water side outlet of the water refrigerant heat exchanger 21 and the upper part of the hot water storage tank 10, a heating return pipe 27, and a heating circulation pump 28 provided in the middle of the heating going pipe 26. It has a boiling temperature sensor 29 provided in the heating return pipe 27 and outputting a detection signal to the control device 31. The heating circulation circuit is composed of the heating going pipe 26, the heating return pipe 27, and the heating circulation pump 28 (hereinafter, simply referred to as “heating circulation circuits 26, 27, 28” as appropriate).

<Structure of control device for hot water storage type hot water supply device>
Here, the boiling operation of the normal hot water storage type hot water supply device without the solar power generation device 3 is performed from the commercial power source 49 in the nighttime zone (23:00 to 7:00 in this example) where the unit price of electric power is low. It is done by the power supply of. On the other hand, the solar power generation device linked hot water storage type hot water supply system 100 of the present embodiment is provided with the solar power generation device 3 as described above. When the sunshine condition is good, the photovoltaic power generation device 3 can receive sunlight by the photovoltaic power generation panel 4 to generate electricity, and the hot water storage type hot water supply device 1 is the photovoltaic power generation device 3. Using the generated power, the heat pump device 19 can perform a boiling operation for heating the hot water in the hot water storage tank 10 via the heating circulation circuits 26, 27, 28 (hereinafter, “daytime boiling operation” as appropriate). Called). When performing the boiling operation using the electric power generated by solar power generation in this way, it is necessary that the generated electric power value is at least to some extent large. Specifically, the power value supplied to the hot water storage type hot water supply device 1, that is, the surplus power value obtained by subtracting the load consumption power value consumed by the electric load device 6 excluding the hot water storage type hot water supply device 1 from the generated power value is to some extent. Must be big. Therefore, in order to smoothly perform the boiling operation, the control device 31 is provided with each functional unit shown in FIG. 2 in the solar power generation device linked hot water storage type hot water supply system 100.

That is, as shown in FIG. 2, the control device 31 includes a weather information acquisition unit 32A, a weather information determination unit 33A, a surplus boiling time division determination unit 33B, a surplus boiling control unit 40, and a surplus boiling. Upper capacity calculation unit 37, hot water amount learning unit 34, required heat amount determination unit 35, night boiling capacity calculation unit 36, corrected night boiling capacity calculation unit 38, night boiling control unit 39, and daytime boiling. An increase control unit 42 is provided.

The weather information acquisition unit 32A (corresponding to the weather information acquisition means) is, for example, for each predetermined time division (for example, every 3 hours, every hour, etc.) of the installation location of the hot water storage type hot water supply device 1 emitted from the server 9. Acquire weather information, that is, weather forecast information, sunshine duration information, and the like. In this example, as shown in FIGS. 3A and 3B, the weather information is "sunny" as sunny weather information (first weather information) and "rain" as rainy weather information (second weather information). ) And "cloudy" as cloudy weather information (third weather information), three types are acquired every three hours. In the illustrated example, the content of the weather information shown at the bottom of the "time" column indicates the content of the immediately preceding 3 hours including the time. That is, "cloudy" at "6 o'clock" indicates that it is cloudy from 3:00 (to be exact, immediately after 3:00. The same applies hereinafter), which is the 3 hours immediately before that, and "9 o'clock". "Sunny" indicates that it is sunny from 6:00 to 9:00, and "rain" at "18:00" indicates that it is rainy from 15:00 to 18:00.

In addition, when detailed weather information other than the above "sunny", "rain", and "cloudy" is acquired, it can be classified according to a predetermined rule and handled in the same way as the above "sunny", "rain", and "cloudy". good. For example, "sunny and sometimes cloudy" can be treated as sunny weather information like "sunny", "cloudy temporary rain" can be treated as cloudy weather information like "cloudy", and "snow" can be treated as rainy weather information like "rain". It's enough. It should be noted that the weather information as publicly known information may be acquired and used from an appropriate place other than the server 9.

The weather information determination unit 33A (corresponding to the first weather information determination means) is a boiling water storage type hot water supply device 1 capable of performing the daytime boiling operation based on the weather information acquired by the weather information acquisition unit 32A. It is determined which of the plurality of meteorological information corresponds to the upper possible time zone (whether the above-mentioned sunny weather information, cloudy weather information, or rainy weather information). In the following, the weather corresponding to the sunny weather information is simply referred to as "sunny", the weather corresponding to the cloudy weather information is simply referred to as "cloudy", the weather corresponding to the rainy weather information is simply referred to as "rain", and the like.

In this example, the boiling time zone is a predetermined time zone (for example, this) in the daytime zone (for example, 7:00 to 23:00) excluding the night zone (for example, 23:00 to 7:00) of each day. In the example, it is uniformly set from 9:00 to 15:00). The boiling time zone is not limited to this example, and may be another time zone such as 8:00 to 16:00. Further, it may be appropriately changed depending on the season and the place where the hot water storage type hot water supply device 1 is installed.

Further, in this example, the acquisition of the weather information by the weather information acquisition unit 32A is controlled by the flow shown in FIGS. 7 and 10 described later, for example, for a specific period to be determined by the weather information determination unit 33A. One day following the desired day on which the procedure is performed; as appropriate hereafter, it is performed at 23:00 on the day before (simply referred to as the "next day") (corresponding to the desired day). That is, the meteorological information acquired by the meteorological information acquisition unit 32A corresponds to the next day's meteorological information.

The surplus boiling time classification determination unit 33B causes the hot water storage type hot water supply device 1 to boil in the daytime on the next day according to the determination result by the weather information determination unit 33A for the weather information acquired by the weather information acquisition unit 32A. Determine the boiling time division in which the operation should be performed. The principle of determining the boiling time division will be described with reference to FIG. In FIG. 4, the horizontal axis is the time axis such as "0:00", "1:00", ..., "23:00", "24:00", and the vertical axis is the electric energy [ kWh], the generated power per unit time in the generated power behavior of the solar power generation device 3 that fluctuates with time on the next day, the load power consumption representing the power consumption per unit time of the electric load device 6, and It is a graph conceptually showing an example of the device power consumption consumed by the hot water storage type hot water supply device 1 every unit time.

As shown in FIG. 4, in this example, when the weather information acquired by the weather information acquisition unit 32A predicts that the weather on the next day will be "sunny" from 9:00 to 15:00, the next day. This is an example of the behavior of. That is, as shown in the broken line graph by the solid line in the figure, the amount of power generated by the photovoltaic power generation device 3 changes at almost 0 [kWh] from 0:00 to 6:00, but at sunrise (6:00 to 7). It gradually rises with (between: 00), 0.2 [kWh] at 7:00, 1.0 [kWh] at 8:00, 1.5 [kWh] at 8:30, and then 9:00. At 1.8 [kWh], 2.5 [kWh] at 10:00, 3.2 [kWh] at 11:00, and peak at 3.3 [kWh] at 12:00. After that, the amount of power generated by the photovoltaic power generation device 3 gradually decreases with the shade of the sun, reaching 3.2 [kWh] at 13:00, 2.5 [kWh] at 14:00, and then 15:00. After 1.8 [kWh] at 15:30, 1.5 [kWh] at 15:30, 1.0 [kWh] at 16:00, and 0.2 [kWh] at 17:00, the sun sets (17: 00 ~). (During 18:00), it will be almost 0 [kWh] until 24:00 after 18:00.

On the other hand, as shown by the gray bar graph in the figure, the load power used in the electric load device 6 is 0.5 [kWh] throughout the day from 0:00 to 24:00 on the next day. As a result, the surplus power value represented by "the amount of power generated by the solar power generation device 3"-"the amount of power used by the load in the electric load device 6" is 8:00 the next day as shown in FIG. For the first time, 0.5 [kWh] occurs, 1.0 [kWh] at 8:30, 1.3 [kWh] at 9:00, 2.0 [kWh] at 10:00, and 2. After 7 [kWh], it becomes maximum at 2.8 [kWh] at 12:00. After that, it gradually decreased, 2.7 [kWh] at 13:00, 2.0 [kWh] at 14:00, 1.3 [kWh] at 15:00, and 1.0 [kWh] at 15:30. , It becomes 0.5 [kWh] at 16:00.

In response to the time fluctuation of the surplus power as described above, in this example, the power used by the hot water storage type hot water supply device 1 is 1 [kWh] per unit time. As a result, on the day of such solar radiation behavior, "surplus power" ≥ "power used by the device of the hot water storage type hot water supply device 1", and from 9:00 to 15:00 is the hot water storage type hot water supply device due to the surplus power. It can be seen that 1 is a operable time zone.
In the present embodiment, based on the above principle, whether or not the determination result by the meteorological information determination unit 33A for the meteorological information acquired by the meteorological information acquisition unit 32A is expected to obtain good solar radiation behavior. Based on the above, the hot water storage type hot water supply device 1 determines the boiling time division in which the daytime boiling operation should be performed on the next day. That is, in the present embodiment, the boiling time division is determined only based on what the meteorological information is, without calculating or estimating the value of the surplus power value. .. At that time, particularly in the present embodiment, as described above, 9:00 to 15:00 is set as the boiling possible time zone in which the daytime boiling operation may be performed when the sunshine conditions are relatively good in advance. ing. Then, based on the weather information acquired as described above, the surplus boiling time classification determination unit 33B actually executes the daytime boiling operation from the 9:00 to 15:00 boiling time. Determine the classification as appropriate. Therefore, for example, even when 6:00 to 15:00 is "sunny" as in the example shown in FIG. 3A, the boiling time zone 9:00 to 15:00 in the case is set. From the inside, the boiling time division is determined. In this way, when the daytime boiling operation can be expected on the next day, the amount of boiling in the nighttime boiling operation performed by purchasing power from the commercial power supply 49 in the nighttime zone on the desired day the day before is calculated in the daytime. It can be reduced by the amount that is planned to be boiled by boiling operation.

On the other hand, for example, FIG. 5 shows an example of the behavior of the next day when the weather on the next day is predicted to be rainy or cloudy (there is almost no solar radiation by the sun) based on the weather information acquired by the weather information acquisition unit 32A. In this case, as shown by the broken line graph with the solid line in the figure, the value of the amount of power generated by the photovoltaic power generation device 3 changes from 0:00 to 8:00 at almost 0 [kWh], and is slight with sunrise. However, 0.1 [kWh] at 9:00, 0.3 [kWh] at 10:00, 0.5 [kWh] at 11:00, and 0.6 [kWh] at 12:00. Even at the peak at 13:00 after that, it stays at about 0.7 [kWh]. After that, the amount of power generated by the photovoltaic power generation device 3 is 0.6 [kWh] at 14:00, 0.5 [kWh] at 15:00, 0.3 [kWh] at 16:00, and 17:00. It becomes 0.1 [kWh], and after 18:00, it becomes almost 0 [kWh] until 24:00. As a result, as shown in FIG. 5, the value of the surplus power represented by "the amount of power generated by the photovoltaic power generation device 3"-"the amount of power used by the load in the electric load device 6" is 12:00 the next day. It occurs only slightly between 14:00 and 14:00, and its maximum value remains at about 0.2 [kWh]. In such a case, there is no time zone in which "surplus power" ≥ "power used by the hot water storage type hot water supply device 1".
Based on such a behavior principle, in the surplus boiling time classification determination unit 33B, for example, as shown in FIG. 3B, the boiling possible time zone from 6:00 to 15:00 is “rain”. In that case, the daytime boiling operation is not performed during the boiling time zone. In other words, it does not determine the boiling time division in which the daytime boiling operation is actually performed. In this case, as shown in FIG. 5, the boiling operation of the hot water storage type hot water supply device 1 is performed at nighttime when the unit price of electric power is low by supplying power from the commercial power source 49 without using electric power generated by solar power generation. In this example, it is executed from 23:00 to 7:00).

Returning to FIG. 2, the boiling time division determined by the excess boiling time classification determination unit 33B as described above is output to the excess boiling capacity calculation unit 37. The surplus boiling capacity calculation unit 37 allows the hot water storage type hot water supply device 1 to boil up to a predetermined boiling target temperature between the boiling time divisions determined by the excess boiling time classification determination unit 33B. Calculate the excess boiling capacity that can be achieved (corresponding to the daytime boiling capacity). The calculated surplus boiling capacity is output to the corrected nighttime boiling capacity calculation unit 38.

On the other hand, at this time, the hot water used amount learning unit 34 receives a detection signal from the hot water supply flow rate sensor 16 (representing the hot water supply amount), a detection signal from the hot water supply temperature sensor 17 (representing the hot water supply temperature), and a water supply temperature. The detection signal (representing the water supply temperature) of the sensor (not shown) is input. The hot water used learning unit 34 converts the input hot water supply amount into the hot water used at a predetermined temperature (for example, 40 [° C.]) while corresponding to the hot water supply temperature, and learns daily for the past predetermined period (for example, 7 days). Learn as the amount of hot water. In the learning at that time, the average value for a predetermined period may be simply taken, or the daily variation may be added by a known method. In addition, the presence or absence of daily reheating results may be taken into consideration.

The required calorific value determination unit 35 determines the required calorific value in the next day based on the daily learning hot water amount in the past predetermined period learned by the hot water amount learning unit 34.

The nighttime boiling capacity determining unit 36 (corresponding to the target boiling amount calculating means) divides the required heat amount on the next day determined by the required heat amount determining unit 35 by the temperature difference between the boiling target temperature and the water supply temperature. Then, the required capacity is calculated and used as the night boiling capacity (corresponding to the target night boiling amount) (before correction using the surplus boiling capacity described later). The night-time boiling capacity calculated in this way is output to the corrected night-time boiling capacity calculation unit 38.

The corrected night-time boiling capacity calculation unit 38 (corresponding to the corrected night-time boiling amount calculation means) is the night-time boiling capacity calculated by the night-time boiling capacity determination unit 36 as described above (in other words, one of the following days). The surplus boiling capacity calculated by the surplus boiling capacity calculation unit 37 as described above from the boiling capacity corresponding to the amount of hot water required in a day (in other words, in the boiling time division of the next day). The corrected nighttime boiling capacity (corresponding to the amount that cannot be boiled due to the surplus electric power in the daytime of the next day) is calculated by subtracting the boiling capacity corresponding to the amount of boiling water. This corrected night boiling capacity is output to the night boiling control unit 39.

In other words, the corrected night boiling capacity calculation unit 38 calculates the corrected night boiling capacity that should be boiled in the night zone (specifically, it should be kept in a boiling state at the end time of the night zone). As a result, the amount of boiling power in the nighttime zone can be reduced by the amount that the excess boiling capacity is expected in the daytime zone of the next day. The amount of electric power purchased from outside the type hot water supply system 100) can be reduced, and the cost can be reduced.

As a result of setting the corrected night boiling capacity as described above, the daytime zone is started immediately after the nighttime zone (23:00 to 7:00 in this example) from the desired day to the next day is completed (in other words, the daytime zone is started). Immediately after, for example, at 7:00), not all the hot water in the hot water storage tank 10 is in a state of being boiled, and the unheated water is to some extent (= the surplus boiling by the electric power of the solar power generation). It remains in the hot water storage tank 10 (for the upper capacity).

The night-time boiling control unit 39 is used from the corrected night-time boiling capacity calculation unit 38 in the nighttime zone from the desired day to the next day (for example, from 23:00 on the desired day to 7:00 on the next day). The heat pump device 19 (specifically, the compressor 20, the blower 24, the heating circulation pump 28, etc.) of the hot water storage type hot water supply device 1 is controlled so as to boil the output corrected nighttime boiling capacity. ..

As described above, when the weather on the next day is sunny or the like and the boiling time classification is set by the excess boiling time classification determination unit 33B, this boiling time classification is the excess boiling control. It is output to unit 40. The surplus boiling control unit 40 uses the surplus power in the boiling time division of the next day to boil the surplus boiling capacity calculated by the surplus boiling capacity calculation unit 37. The heat pump device 19 (specifically, the compressor 20, the blower 24, the heating circulation pump 28, etc.) of the hot water supply device 1 is controlled.

Further, the daytime boiling increase control unit 42 reduces the amount of hot water stored in the hot water storage tank 10 to or less than a predetermined threshold value in a daytime zone other than the nighttime zone (for example, from 7:00 to 23:00). (Detected by the plurality of hot water storage temperature sensors 18), the heat pump device 19 of the hot water storage type hot water supply device 1 (specifically, the above) so as to boil a predetermined daytime boiling increase capacity using the commercial power supply 49. The compressor 20, the blower 24, the heating circulation pump 28, etc.) are controlled. In the night boiling capacity determination unit 36, the required capacity calculated as described above may be compared with the capacity of the hot water storage tank 10, and the smaller of them may be used as the night boiling capacity (hereinafter, the same applies). ). At this time, when the required capacity exceeds the capacity of the hot water storage tank 10, the nighttime boiling capacity calculated by the nighttime boiling capacity determination unit 36 is input to the daytime boiling increase control unit 42 (FIG. (Refer to the two-dot chain line in 2), the amount that the daytime boiling increase control unit 42 did not boil in the night zone is calculated as the daytime boiling increase capacity, and the calculated daytime boiling increase capacity is boiled. Such control may be performed.

In the above, the surplus boiling time division determination unit 33B, the surplus boiling control unit 40, the surplus boiling capacity calculation unit 37, the used hot water amount learning unit 34, the required heat amount determination unit 35, and the nighttime boiling capacity. The calculation unit 36, the corrected nighttime boiling capacity calculation unit 38, the nighttime boiling control unit 39, and the daytime boiling increase control unit 42 correspond to the boiling control means.

<Main part of the embodiment>
Here, when the weather information such as "sunny", "cloudy", and "rain" is acquired, in the case of "rain", power generation by the photovoltaic power generation device can hardly be expected, so the daytime boiling operation is performed. It is enough to perform normal night boiling operation without doing it. On the other hand, in the case of "cloudy", there is a possibility that power generation by a solar power generation device can be expected because a certain amount of sunshine can be secured in the so-called light cloudy weather, but it is possible that almost no power generation can be expected in the case of rain clouds. There is.

Therefore, for example, if it is "cloudy" and the daytime boiling operation is performed uniformly, in the case of rain clouds, etc., the amount of power generated by the daytime boiling operation is insufficient and power is purchased during the daytime, resulting in high cost. On the contrary, if the daytime boiling operation is not performed uniformly, even if there is a sufficient amount of power generation in the case of light cloudiness, it cannot be utilized and waste may occur.

Therefore, in the present embodiment, when the boilable time zone of the next day corresponds to "cloudy", it is a time zone adjacent to the boilable time zone (9:00 to 15:00). Contents of weather information from 6:00 to 9:00 (corresponding to the front adjacent time zone) or from 15:00 to 18:00 (corresponding to the rear adjacent time zone) which is the time zone adjacent to the boiling possible time zone. Depending on the situation, the presence or absence of the daytime boiling operation or the actual operation time zone during which the daytime boiling operation is actually performed is adjusted. FIGS. 6A to 6F show an example of setting the time division of the daytime boiling operation according to the present embodiment, including the adjustment at the time of such cloudy weather prediction.

<Outline of the method of the embodiment>
In the example of FIG. 6A, on the next day, 3:00 to 6:00 is "cloudy", 6:00 to 9:00 is "sunny", 9:00 to 12:00 is "sunny", and 12 It is a case where it is predicted that: 00 to 15:00 is "sunny", 15:00 to 18:00 is "cloudy", and so on. In this case, since the boiling possible time zone from 9:00 to 15:00 is "sunny", the daytime boiling operation is executed in the boiling possible time zone from 9:00 to 15:00. As a result, the boiling amount in the night boiling operation on the desired day is reduced by the boiling amount in the daytime boiling operation.

In the example of FIG. 6B, on the next day, 3:00 to 6:00 is "cloudy", 6:00 to 9:00 is "rain", 9:00 to 12:00 is "rain", and 12 It is a case where it is predicted that "rain" is from: 00 to 15:00, "cloudy" is from 15:00 to 18:00, and so on. In this case, since the boiling time zone from 9:00 to 15:00 is "rain", the daytime boiling operation is not executed. Therefore, the night-time boiling operation on the desired day is performed without reducing the boiling amount as in the case where the daytime boiling operation is performed.

In the example of FIG. 6 (c), on the next day, 3:00 to 6:00 is "sunny", 6:00 to 9:00 is "sunny", 9:00 to 12:00 is "cloudy", and 12 It is a case where it is predicted that: 00 to 15:00 is "cloudy", 15:00 to 18:00 is "rain", and so on. In this case, the boiling time zone from 9:00 to 15:00 is "cloudy", while the previous 6:00 to 9:00 is "sunny". In the present embodiment, in such a case, the boiling time zone is 9:00 to 15:00, which is immediately after 6:00 to 9:00, which is “sunny” (No. 1). During the daytime boiling operation (corresponding to one hour). As a result, similarly to the above, the boiling amount in the night boiling operation on the desired day is reduced by the boiling amount in the daytime boiling operation.

In the example of FIG. 6 (d), on the next day, 3:00 to 6:00 is "rain", 6:00 to 9:00 is "rain", 9:00 to 12:00 is "cloudy", and 12 It is a case where it is predicted that: 00 to 15:00 is "cloudy", 15:00 to 18:00 is "sunny", and so on. In this case, the boiling time zone from 9:00 to 15:00 is "cloudy", while the subsequent 15:00 to 18:00 is "sunny". In the present embodiment, in such a case, 12:00 to 15:00 (No. 1) immediately before 15:00 to 18:00, which is "sunny", in the boiling time zone from 9:00 to 15:00. During the daytime boiling operation (corresponding to 2 hours). As a result, similarly to the above, the boiling amount in the night boiling operation on the desired day is reduced by the boiling amount in the daytime boiling operation.

In the example of FIGS. 6 (e) and 6 (f), 3:00 to 6:00 is "cloudy", 6:00 to 9:00 is "cloudy", and 9:00 to 12:00 on the next day. Is "cloudy", 12:00 to 15:00 is "cloudy", 15:00 to 18:00 is "cloudy", and so on. In this case, the boiling time zone from 9:00 to 15:00 is "cloudy". On the other hand, both 6:00 to 9:00 before that and 15:00 to 18:00 after that are "cloudy", not "sunny". In this embodiment, in such a case, the control device 31 of the hot water storage type hot water supply device 1 selectively turns ON / OFF a "safety control mode" which is a control mode for avoiding the possibility of purchasing power as much as possible. It is provided as possible.

FIG. 6E is an adjustment example when the “safety control mode” is ON. In this case, the daytime boiling operation is not executed as shown in the figure. Therefore, the night-time boiling operation on the desired day is performed without reducing the boiling amount as in the case where the daytime boiling operation is performed.

On the other hand, FIG. 6 (f) is an adjustment example when the "safety control mode" is OFF. In this case, out of the available boiling time zone from 9:00 to 15:00, an appropriate time zone including at least the first half portion, in this example, 9:00 to 12:00 (corresponding to the third time zone) in the daytime. Perform boiling operation. As a result, similarly to the above, the boiling amount in the night boiling operation on the desired day is reduced by the boiling amount in the daytime boiling operation.

<Control procedure>
Next, the control procedure executed by the control device 31 in order to realize the above method will be described with reference to the flowchart of FIG. 7.

In FIG. 7, first, in step S10, the control device 31 receives the weather information acquired as described above by the weather information determination unit 33A in the boiling time zone (9:00 to 15:00 in this example). . The same applies below) is determined whether or not it is "sunny". If it is "sunny", the determination is satisfied (S10: Yes), the process proceeds to step S20, and the weather acquired by the weather information acquisition unit 32A (and determined to be "sunny" by the weather information determination unit 33A). The daytime boiling operation is performed in the boiling time division determined based only on the information. After that, this flow ends.

If the weather information in the boiling time zone is not "sunny" in step S10, the determination is not satisfied (S10: No), and the process proceeds to step S30.

In step S30, the control device 31 determines whether or not the boilable time zone is “rain” in the acquired weather information by the weather information determination unit 33A. If it is "rain", the determination is satisfied (S30: Yes), and if it is not "rain", the determination is not satisfied (S30: No), and the process proceeds to step S40.

In step S40, the control device 31 uses the weather information determination unit 33A to set the time zone (6:00 to 9:00 in this example) adjacent to the boiling possible time zone in the acquired weather information. Determine if it is "sunny". If it is "sunny", the determination is satisfied (S40: Yes), and the process proceeds to step S50. In step S50, similarly to the above, the control device 31 is based only on the weather information acquired by the weather information acquisition unit 32A (and determined to be “sunny” by the weather information determination unit 33A), and the boiling of the next day. The daytime boiling operation is executed in the time zone immediately after the time zone adjacent to the previous one (9:00 to 12:00 in this example) among the upper possible time zones. After that, this flow ends.

In step S40, if the weather information in the time zone adjacent to the front is not "sunny", the determination is not satisfied (S40: No), and the process proceeds to step S60.

In step S60, the control device 31 is set by the weather information determination unit 33A to "clearly" in the time zone (15:00 to 18:00 in this example) adjacent to the boiling possible time zone in the acquired weather information. It is determined whether or not it is. If it is "sunny", the determination is satisfied (S60: Yes), and the process proceeds to step S70. In step S70, similarly to the above, the control device 31 is based only on the weather information acquired by the weather information acquisition unit 32A (and determined to be “sunny” by the weather information determination unit 33A), and the boiling of the next day. The daytime boiling operation is executed in the time zone immediately before the adjacent time zone (12:00 to 15:00 in this example) among the upper possible time zones. After that, this flow ends.

If the weather information in the adjacent time zone is not "sunny" in step S60, the determination is not satisfied (S60: No), and the process proceeds to step S80.

In step S80, the control device 31 determines whether or not the safety control mode is turned off by the surplus boiling time division determination unit 33B. If it is OFF, the determination is satisfied (S80: Yes), and the process proceeds to step S90. In step S90, the control device 31 executes the daytime boiling operation in an appropriate time zone (9:00 to 12:00 in this example) including at least the first half of the boiling possible time zone of the next day. After that, this flow ends.

If the safety control mode is ON in step S80, the determination is not satisfied (S80: No), and the process proceeds to step S100. In step S100, the control device 31 is set not to execute the daytime boiling operation in the boiling possible time zone of the next day. After that, this flow ends.

<Effect of embodiment>
As described above, according to the hot water storage type hot water supply device 1 of the present embodiment, the boiling possible time zone in which the daytime boiling operation can be executed based on the determination result by the weather information determination unit 33A (9: in the above example: The control is finely switched according to which weather information corresponds to (00 to 15:00). That is, in the case of "sunny", the daytime boiling operation is performed during the boiling time zone (see step S20), and in the nighttime zone prior to that, the same capacity as the daytime boiling operation is left unheated at night. Try to perform boiling operation. When the boiling time zone corresponds to "rain", the daytime boiling operation is not performed in the boiling possible time zone (see the flow of Yes determination in step S30), and the normal night boiling is performed in the night zone prior to that. Try to drive up.

When the boiling time zone corresponds to "cloudy", the presence or absence of daytime boiling operation may be switched as appropriate according to the content of the weather information in the time zone adjacent to the time zone before and after the boiling time zone. Make adjustments such as changing the operation time zone (see step S50, step S70, step S90, and step S100). In this way, what kind of cloudy sky is the boilable time zone based on the weather information of the time zone before and after, instead of controlling uniformly when "cloudy" is expected in the boilable time zone. After ascertaining, fine boiling control will be implemented. As a result, it is possible to use the amount of power generated by solar power to boil even if it is a cloudy forecast, while avoiding the risk of purchasing electricity.

If sunny weather is expected at least one of the time before and after the boiling time (6:00 to 9:00 or 15:00 to 18:00 in the above example), for example, the weather is slightly from fine weather. Although it is a downhill, there is a possibility that the clouds are not so thick during the boiling time, or the weather is recovering greatly toward the clear sky and the clouds are decreasing during the boiling time. Since it is high, there is a high possibility that a certain amount of sunshine can be obtained during the boiling time.
Therefore, in the present embodiment, in particular, when the boiling possible time zone corresponds to "cloudy" and the time zones before and after it correspond to "sunny", the daytime boiling operation is performed in the boiling possible time zone. , The night boiling operation is performed by subtracting the boiling capacity of the daytime boiling operation (see steps S50 and S70). As a result, even if it is a cloudy forecast, it is possible to reliably use the amount of power generated by sunlight to boil.

Also, if "sunny" is expected before the boiling time, the weather is a little downhill from the fine weather, but the clouds are not so thick during the boiling time, and some sunshine can be obtained. Probability is high. Therefore, in the present embodiment, particularly in such a case, when the time zone adjacent to the boiling time zone (6:00 to 9:00 in the above example) corresponds to "sunny". Performs the daytime boiling operation from 9:00 to 12:00, which is an earlier time zone among the boiling possible time zones (see step S50). As a result, even if it is a cloudy forecast, it can be surely boiled.

Also, if "sunny" is expected after the boiling time, the weather is recovering significantly toward fine weather and there are few clouds during the boiling time, so some sunshine can be obtained. Probability is high. Therefore, in the present embodiment, in particular, when such a case is dealt with and the adjacent time zone after the boiling possible time zone corresponds to "sunny", the later boiling time zone is selected. The daytime boiling operation is performed from 12:00 to 15:00 (see step S70). As a result, even if it is a cloudy forecast, it can be surely boiled.

In addition, if there is no expectation of "sunny" before and after the boilable time zone, there is a high possibility that it is covered with clouds during the boilable time zone, for example. It is unlikely that you will get sunshine in. Therefore, in the present embodiment, particularly when the safety control mode is ON, the boiling possible time zone corresponds to "cloudy", and the adjacent time zones (6:00 to 9:00, 15:) before and after that. If none of (00 to 18:00) corresponds to "sunny", the daytime boiling operation is not performed during the boiling time zone, and the boiling capacity of the daytime boiling operation is not expected. (Refer to the flow of step S60 → step S80 → step S100). As a result, it is possible to avoid the risk of purchasing electricity, which causes a high cost in the daytime.

On the other hand, if there is no expectation of "sunny" before and after the boiling time, for example, it may be covered with clouds throughout the boiling time, but the weather will not change and the cloudy state will continue. In that case, there is a possibility that sunshine can be obtained in the boiling time zone. Therefore, in the present embodiment, particularly when the safety control mode is OFF, the boiling possible time zone corresponds to "cloudy", and the adjacent time zones (6:00 to 9:00, 15:) before and after that. Even if none of (00 to 18:00) corresponds to "sunny", the daytime boiling operation is performed from 9:00 to 12:00, which is a relatively early time zone among the boiling time zones. (See step S90). As a result, it is possible to prevent waste from occurring because the power generation amount cannot be utilized even in the case of light cloudiness or the like.

The present invention is not limited to the above aspects, and can be applied to the extent that the gist thereof is not changed. Hereinafter, such a modification is shown.

(1) When the time of daytime boiling operation is specified from the information terminal That is, in the above embodiment, the possible boiling time zone in which the daytime boiling operation may be performed when the sunshine conditions are relatively good is set in advance. (9:00 to 15:00 in the above example), and various adjustments related to daytime boiling operation depending on whether the weather information for the boiling time zone is "sunny", "cloudy", or "rainy". Was done. In this modification, a time zone in which the daytime boiling operation should be performed in advance by the user using the information terminal 200 is specified among the boiling possible time zones, and the time zone (hereinafter, as appropriate, simply " This is an example of making various adjustments related to daytime boiling operation depending on whether the weather information for (referred to as "designated operation time zone") is "sunny", "cloudy", or "rainy". The same reference numerals are given to the parts equivalent to those in the above embodiment, and the description thereof will be omitted or simplified as appropriate.

The functional configuration of the control device 31 of the hot water storage type hot water supply device 1 in this modification is shown in FIG. 8 corresponding to FIG. In FIG. 8, in the configuration shown in FIG. 2, a designated time acquisition unit 32B (corresponding to a designated time acquisition means) is further added. The designated time acquisition unit 32B acquires the designated operation time zone designated by an appropriate operation of the user in the information terminal 200. Then, the weather information determination unit 33A corresponds to any of the plurality of weather information in the designated operation time zone input from the designated time acquisition unit 32B based on the weather information acquired by the weather information acquisition unit 32A. It is determined whether to do (whether it is the above-mentioned sunny weather information, cloudy weather information, or rainy weather information). The surplus boiling time classification determination unit 33B actually executes the daytime boiling operation as it is in the designated operation time zone designated as described above based on the determination result in the weather information determination unit 33A (details will be described later). Determined as the boiling time division. Alternatively, if the designated operation time zone cannot be determined as the boiling time division for executing the daytime boiling operation (details will be described later), the boiling time division for executing the daytime boiling operation is not determined. As described above, the surplus boiling control unit 40 is determined by the surplus boiling time classification determination unit 33B as the boiling time division in which the designated operation time zone is actually executed during the daytime boiling operation. The hot water storage type hot water supply device 1 so as to boil the surplus boiling capacity calculated by the surplus boiling capacity calculation unit 37 using the surplus power in the time division of the next day corresponding to the designated operation time zone. Controls the heat pump device 19 of the above.

An example of setting the time division of the daytime boiling operation according to this modification is shown in FIGS. 9 (a) to 9 (d) corresponding to FIG. In the example shown in FIG. 9, as in the above embodiment, the designated operating time from 9:00 to 12:00 is set by the information terminal 200 in a state where the boiling time zone is preset from 9:00 to 15:00. The case where the band is specified will be described. Further, in FIG. 9, a case where the weather information in the designated operation time zone (9:00 to 12:00) is “cloudy” will be described as an example.

In the example of FIG. 9A, on the next day, 3:00 to 6:00 is "sunny", 6:00 to 9:00 is "cloudy", and 9:00 to 12:00 is "cloudy", 12 It is a case where it is predicted that "rain" is from: 00 to 15:00, "cloudy" is from 15:00 to 18:00, and so on. In this case, the designated operation time zone 9:00 to 12:00 is "cloudy" and at least a part of the boiling time zone 9:00 to 15:00 (12:00 to 15:00 in this example). ) Corresponds to "rain". In this modification, in such a case, the daytime boiling operation is not performed in the designated operation time zone from 9:00 to 12:00 (even in other time zones of the boiling possible time zone from 12:00 to 15:00). Do not perform daytime boiling operation). That is, in this case, the night boiling operation on the desired day is executed without reducing the boiling amount as in the case where the daytime boiling operation is performed.

In the example of FIG. 9B, on the next day, 3:00 to 6:00 is "cloudy", 6:00 to 9:00 is "cloudy", and 9:00 to 12:00 is "cloudy", 12 It is a case where it is predicted that: 00 to 15:00 is "cloudy", 15:00 to 18:00 is "cloudy", and so on. In this case, the designated operation time zone 9:00 to 12:00 is "cloudy" and the boiling time zone 9:00 to 15:00 as a whole does not correspond to "rain", and the boiling possible time zone is further. The time zone 6:00 to 9:00 adjacent to the front and the time zone 15:00 to 18:00 adjacent to the rear do not correspond to "rain" either. In this modification, even in such a case, the daytime boiling operation is performed in the designated operation time zone from 9:00 to 12:00.

In the example of FIG. 9 (c), on the next day, 3:00 to 6:00 is "cloudy", 6:00 to 9:00 is "cloudy", and 9:00 to 12:00 is "cloudy", 12 It is a case where it is predicted that: 00 to 15:00 is "cloudy", 15:00 to 18:00 is "rain", and so on. In this case, the designated operation time zone 9:00 to 12:00 is "cloudy" and the boiling time zone 9:00 to 15:00 does not correspond to "rain" as a whole, but before the boiling possible time zone. Alternatively, the later adjacent time zone (in this example, the later adjacent time zone from 15:00 to 18:00) corresponds to "rain". In this modification, in such a case, the daytime boiling operation is not performed in the designated operation time zone from 9:00 to 12:00 (other time zones of the boiling possible time zone from 12:00 to 15:00). But I don't do the daytime boiling operation). That is, the night-time boiling operation on the desired day is executed without reducing the boiling amount as in the case where the daytime boiling operation is performed.
The example of FIG. 9D will be described later.

<Control procedure>
Next, in order to realize the above method, the control procedure executed by the control device 31 of the hot water storage type hot water supply device 1 of this modification will be described with reference to the flowchart of FIG.

In FIG. 10, first, in step S110, the control device 31 is in the designated operating time zone (in this example, 9:00 to 12:00) in the weather information acquired as described above by the weather information determination unit 33A. It is determined whether or not (the same applies hereinafter) is "sunny". If it is "sunny", the determination is satisfied (S110: Yes), the process proceeds to step S120, and the weather information acquisition unit 32A has acquired it (and the weather information determination unit 33A has determined that it is "sunny" as described above. E) The daytime boiling operation is executed in the designated operation time zone of the next day based only on the weather information. After that, this flow ends.

If the weather information in the designated operation time zone is not "sunny" in step S110, the determination is not satisfied (S110: No), and the process proceeds to step S130.

In step S130, the control device 31 determines whether or not the designated operation time zone is "rain" in the acquired weather information by the weather information determination unit 33A. If it is "rain", the determination is satisfied (S130: Yes), and the process proceeds to step S140. In step S140, similarly to the above, the control device 31 boiled in the daytime on the next day based only on the weather information acquired by the weather information acquisition unit 32A (and determined to be "rain" by the weather information determination unit 33A). Set not to execute the top operation. After that, this flow ends.

If the weather information in the designated operation time zone is not "rain" in step S130, the determination is not satisfied (S130: No), and the process proceeds to step S150.

In step S150, the control device 31 determines whether or not "rain" is included in the boiling possible time zone (9:00 to 15:00 in this example) in the acquired weather information by the weather information determination unit 33A. Is determined. If "rain" is included, the determination is satisfied (S150: Yes), and the process proceeds to step S160. In step S160, the control device 31 is similarly the next day based only on the weather information acquired by the weather information acquisition unit 32A (and determined by the weather information determination unit 33A to include "rain"). Set not to execute the daytime boiling operation in. After that, this flow ends.

If "rain" is not included in the weather information in the boiling time zone in step S160, the determination is not satisfied (S150: No), and the process proceeds to step S170.

In step S170, the control device 31 is adjacent to the time zone before or after the boiling possible time zone in the acquired weather information by the weather information determination unit 33A (in this example, 6:00 to 9:00 or 15). : 00 to 18:00) is determined whether or not "rain" is included. If "rain" is included, the determination is satisfied (S170: Yes), and the process proceeds to step S180. In step S180, the control device 31 is similarly the next day based only on the weather information acquired by the weather information acquisition unit 32A (and determined by the weather information determination unit 33A to include "rain"). Set not to execute the daytime boiling operation in. After that, this flow ends.

If "rain" is not included in the weather information in the time zone adjacent to the boiling time zone before or after the boiling time zone in the step S170, the determination is not satisfied (S170: No), and the process proceeds to step S190.

In step S190, the control device 31 is said to be based only on the weather information acquired by the weather information acquisition unit 32A (and determined by the weather information determination unit 33A that "rain" is not included), as described above. The daytime boiling operation is executed in the designated operation time zone on the next day. After that, this flow ends.

<Effect of modified example>
Also in this modification, the same effect as that of the above embodiment is obtained. That is, based on the judgment result by the weather information judgment unit 33A, the designated operation time zone (9:00 to 12:00 in the above example) acquired by the designated time acquisition unit 32B corresponds to which weather information. , Finely switch the control. That is, when it corresponds to "sunny", the daytime boiling operation is performed during the designated operation time zone (see step S120), and in the nighttime zone prior to that, the same capacity as the daytime boiling operation is left unheated at night. Try to drive up. When the designated operation time zone corresponds to "rain", the daytime boiling operation in the designated operation time zone is not performed (see step S140), and the normal nighttime boiling operation is performed in the nighttime zone prior to the designated operation time zone.

When the designated operation time zone corresponds to "cloudy", the boiling time zone other than the designated operation time zone (12:00 to 15:00 in the above example) or boiling is performed. Contents of weather information in the front adjacent time zone (6:00 to 9:00 in the above example) or the rear adjacent time zone (15:00 to 18:00 in the above example) adjacent before and after the upper possible time zone. Depending on the situation, adjustments such as switching the presence or absence of daytime boiling operation and changing the actual operation time zone are performed (see step S160, step S180, and step S190). In this way, when "cloudiness" is expected in the designated operation time zone, the control is not uniform, and the designated operation time zone is based on the weather information of the boiling time zone and the time zones before and after the boiling time zone. After ascertaining whether the sky is cloudy, fine boiling control is performed. As a result, it is possible to use the amount of power generated by solar power to boil even if it is a cloudy forecast, while avoiding the risk of purchasing electricity.

When the determination in step S150 is not satisfied, the step S170 may be omitted and the step S190 may be executed immediately. This has the following significance. That is, for example, even if the designated operation time zone is expected to be "cloudy", if rainy weather is not expected in other boiling time zones (when step S150 is No determination), for example, the weather is slightly sunny. Although it is a downhill, there is a high possibility that rain clouds have not yet occurred during the designated driving time, or that the weather has begun to recover and sufficient time has passed and no rain clouds remain during the designated driving time. , There is a high possibility that some sunshine can be obtained during the designated operation time zone. Therefore, in response to such a case, by performing the daytime boiling operation during the boiling time zone (see step S190), the amount of power generated by sunlight can be reliably used even in the cloudy forecast. It can be boiled.

The example of FIG. 9D shows an example when the above control omitting step S170 is applied. In this example, on the next day, 3:00 to 6:00 is "sunny", 6:00 to 9:00 is "cloudy", 9:00 to 12:00 is "cloudy", and 12:00 to 15: 00 is predicted to be "cloudy", 15:00 to 18:00 is predicted to be "rain", and so on. In this case, the designated operation time zone 9:00 to 12:00 is "cloudy" and the boiling possible time zone 9:00 to 15:00 as a whole is not "rainy". Therefore, the daytime boiling operation is performed during the designated operation time zone from 9:00 to 12:00.

Also, if the designated operating time zone is expected to be "cloudy" and rainy weather is expected somewhere other than the boiling time zone, for example, the weather is downhill and rain clouds will appear during the designated operating time zone. There is a high possibility that it is starting to occur, or that it has not been long since the weather started to recover and rain clouds remain in the designated operating time zone, so there is a possibility that sunshine will be obtained in the designated operating time zone. low. Therefore, in this modification, in such a case, the daytime boiling operation is not performed during the boiling possible time zone (see step S160), and the boiling capacity of the daytime boiling operation is not expected at normal nighttime. Try to perform boiling operation. As a result, it is possible to avoid the risk of purchasing electricity, which causes a high cost in the daytime.

Even if the designated operation time zone is expected to be "cloudy", if rainy weather is not expected in the boiling time zone and the time zone adjacent to it, for example, the weather is slightly downhill from fine weather, but the designated operation There is a high possibility that the clouds are not so thick in the time zone, or the weather is recovering greatly toward the clear sky and the clouds are decreasing in the designated driving time zone, so in the designated driving time zone. It is likely that you will get some sunshine. According to this modification, the daytime boiling operation is performed in the designated operation time zone in response to such a case (see step S190). As a result, even if it is a cloudy forecast, it is possible to reliably use the amount of power generated by sunlight to boil.

Even if the designated operation time zone is expected to be cloudy, if rainy weather is expected in at least a part of the boiling time zone and the time zone adjacent to it, for example, it will be covered with clouds throughout the designated operation time zone. Since there is a high possibility that it has been damaged, it is unlikely that sunshine will be obtained during the boiling time. According to this modification, in response to such a case, the daytime boiling operation is not performed during the designated operation time zone (see step S180), and the boiling capacity of the daytime boiling operation is not expected. Try to perform night boiling operation. As a result, it is possible to avoid the risk of purchasing electricity, which causes a high cost in the daytime.

(2) Others For example, at least one of the functional units provided in the control device 31 of the hot water storage type hot water supply device 1 may be provided in the server 9.

Further, in the above, the arrows shown in each of the figures such as FIGS. 2 and 8 indicate an example of the signal flow, and do not limit the signal flow direction.

Further, the flowcharts shown in FIGS. 7 and 10 do not limit the present invention to the procedure shown in the above flow, and add / delete or change the order of the procedures within a range that does not deviate from the purpose and technical idea of the invention. You may do.

1 Hot water storage type hot water supply device 3 Solar power generation device 10 Hot water storage tank 19 Heat pump device (heating means)
31 Control device 32A Meteorological information acquisition unit (weather information acquisition means)
32B Weather information judgment unit (1st weather information judgment means, 2nd weather information judgment means)
33B Surplus boiling time classification determination unit 36 Night boiling capacity determination unit 38 Corrected night boiling capacity calculation unit (corrected night boiling amount calculation means)
49 Commercial power supply 100 Photovoltaic power generation equipment cooperation Hot water storage type hot water supply system

Claims (11)

It is equipped with a hot water storage tank that stores hot water and a heating means that heats the hot water, and while cooperating with the solar power generation device, the heating means cooperates with a solar power generation device that performs a boiling operation that heats the hot water in the hot water storage tank. In the hot water storage type hot water supply device
A predetermined time on the day after the desired date, which is classified into any one of a plurality of weather information including the first weather information having sunny weather information, the second weather information having rainy weather information, and the third weather information having cloudy weather information. Meteorological information acquisition means to acquire the next day weather information for each category,
It is possible for the solar power generation device-linked hot water storage type hot water supply device to perform daytime boiling operation using the power from the solar power generation device, which is predetermined in the daytime zone excluding the predetermined nighttime zone of the next day. A first meteorological information determination means for determining which of the plurality of meteorological information the time zone corresponds to based on the next day meteorological information acquired by the meteorological information acquisition means.
A boiling control means for controlling the boiling operation of the heating means according to a determination result by the first weather information determining means, and a boiling control means.
Have,
The boiling control means is
When the boilable time zone corresponds to the first meteorological information, the daytime boiling operation is performed during the boilable time zone, and the same capacity as the boiling capacity due to the daytime boiling operation is applied. The heating means is controlled so as to complete the night boiling operation in the night zone while leaving unheated.
When the boilable time zone corresponds to the second meteorological information, the night boil operation is executed in the night zone without performing the daytime boil operation in the boilable time zone. By controlling the heating means,
When the boilable time zone corresponds to the third meteorological information, in the pre-adjacent time zone adjacent before the boilable time zone and the post-adjacent time zone adjacent after the boilable time zone. Depending on the content of the weather information on the next day, the presence or absence of the daytime boiling operation or the actual operation time zone during which the daytime boiling operation is actually performed is adjusted. Device. The boiling control means is
When the boilable time zone corresponds to the third meteorological information and the front adjacent time zone or the rear adjacent time zone corresponds to the first meteorological information, the daytime boiling is performed in the boilable time zone. The heating means is controlled so as to perform the upper operation and complete the night boiling operation in the night zone while leaving the same capacity as the boiling capacity of the daytime boiling operation unheated. The hot water storage type hot water supply device linked with a solar power generation device according to claim 1. The boiling control means is
When the boilable time zone corresponds to the third weather information and the front adjacent time zone corresponds to the first weather information, immediately after the previous adjacent time zone in the boilable time zone. The solar power generation device-linked hot water storage type hot water supply device according to claim 2, wherein the daytime boiling operation is performed in the first time zone of the above. The boiling control means is
When the boilable time zone corresponds to the third meteorological information and the posterior adjacent time zone corresponds to the first meteorological information, immediately before the posterior adjacent time zone in the boilable time zone. The solar power generation device-linked hot water storage type hot water supply device according to claim 2, wherein the daytime boiling operation is performed in the second time zone of the above. The boiling control means is
When the boilable time zone corresponds to the third meteorological information and neither the front adjacent time zone nor the rear adjacent time zone corresponds to the first meteorological information, the boilable time zone is used. The invention according to any one of claims 1 to 4, wherein the heating means is controlled so that the night boiling operation is performed in the night zone without performing the daytime boiling operation. Hot water storage type hot water supply device linked with solar power generation device. The boiling control means is
When the boilable time zone corresponds to the third meteorological information and neither the front adjacent time zone nor the rear adjacent time zone corresponds to the first meteorological information, the boilable time zone The sun according to any one of claims 1 to 4, wherein the heating means is controlled so as to execute the daytime boiling operation in a third time zone including at least the first half portion. Photovoltaic power generation device cooperation hot water storage type hot water supply device. It is equipped with a hot water storage tank that stores hot water and a heating means that heats the hot water, and while cooperating with the solar power generation device, the heating means cooperates with a solar power generation device that performs a boiling operation that heats the hot water in the hot water storage tank. In the hot water storage type hot water supply device
A predetermined time on the day after the desired date, which is classified into any one of a plurality of weather information including the first weather information having sunny weather information, the second weather information having rainy weather information, and the third weather information having cloudy weather information. Meteorological information acquisition means to acquire the next day weather information for each category,
The designated time to acquire the designated operating time zone that is predetermined in the daytime zone excluding the predetermined nighttime zone of the next day and is designated to execute the daytime boiling operation using the electric power from the photovoltaic power generation device. Obi acquisition means and
A second method of determining which of the plurality of meteorological information the designated operating time zone acquired by the designated time zone acquisition means corresponds to, based on the next day weather information acquired by the meteorological information acquisition means. Meteorological information judgment means and
A boiling control means for controlling the boiling operation of the heating means according to a determination result by the second weather information determining means, and a boiling control means.
Have,
The boiling control means is
When the designated operation time zone corresponds to the first meteorological information, the daytime boiling operation is performed during the designated operation time zone, and the same capacity as the boiling capacity due to the daytime boiling operation is not heated. The heating means is controlled so as to complete the night boiling operation in the night zone, leaving it as it is.
When the designated operation time zone corresponds to the second weather information, the heating is performed so that the nighttime boiling operation is executed in the nighttime zone without performing the daytime boiling operation in the designated operation time zone. Control the means,
When the designated operation time zone corresponds to the third weather information,
Of the boilable time zones, a time zone other than the designated operation time zone, a pre-adjacent time zone adjacent before the boilable time zone, or a posterior adjacent time zone adjacent after the boilable time zone. A solar power generation device characterized in that the presence or absence of the daytime boiling operation or the actual operating time zone in which the daytime boiling operation is actually performed is adjusted according to the content of the next day weather information in the time zone. Cooperative hot water storage type hot water supply device. The boiling control means is
When the designated operation time zone acquired by the designated time zone acquisition means corresponds to the third weather information and the boiling possible time zone does not correspond to the second weather information, the designated operation time zone The solar power generation device-linked hot water storage type hot water supply device according to claim 7, wherein the heating means is controlled so as to execute the daytime boiling operation. Further having a designated time zone acquisition means for acquiring a designated operation time zone designated to execute the daytime boiling operation among the boiling possible time zones.
The boiling control means is
When the designated operation time zone acquired by the designated time zone acquisition means corresponds to the third weather information and at least a part of the boiling possible time zone corresponds to the second weather information, the above. The solar power generation device according to claim 7, wherein the heating means is controlled so that the nighttime boiling operation is performed in the nighttime zone without performing the daytime boiling operation in the boiling possible time zone. Cooperative hot water storage type hot water supply device. Further having a designated time zone acquisition means for acquiring a designated operation time zone designated to execute the daytime boiling operation among the boiling possible time zones.
The boiling control means is
The designated operation time zone acquired by the designated time zone acquisition means corresponds to the third meteorological information, and the boiling possible time zone and the time zones adjacent to it do not correspond to the second meteorological information. The solar power generation device-linked hot water storage type hot water supply device according to claim 7, wherein the heating means is controlled so as to execute the daytime boiling operation in the designated operation time zone. Further having a designated time zone acquisition means for acquiring a designated operation time zone designated to execute the daytime boiling operation among the boiling possible time zones.
The boiling control means is
The designated operation time zone acquired by the designated time zone acquisition means corresponds to the third weather information, and at least a part of the boiling possible time zone and the time zones adjacent to the second is the second. When the weather information is applicable, the claim is characterized in that the heating means is controlled so as to execute the night boiling operation in the night zone without performing the day boiling operation in the boiling possible time zone. Item 7. The solar power generation device linked hot water storage type hot water supply device according to item 7.

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