JP2018119732A - Hot water storage type hot water supply system in coordination with photovoltaic power generation device and hot water storage type water heater in coordination with photovoltaic power generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a user from mistakenly performing a boiling operation by a manual operation when a boiling operation by photovoltaic power generation is scheduled.SOLUTION: By a surplus boiling determination part 33A, it is determined whether or not a boiling operation can be executed in a boiling time zone on the next day at first timing before nighttime boiling start time for completing boiling of a hot water storage amount necessary for the next day by the finish time of a nighttime zone. Then, when it is determined to be executable, after the first timing, and at second timing before the finish time when the nighttime zone finishes, a daytime boiling advance notice mark M is displayed by a display part 61. Thereby, by visually recognizing the daytime boiling advance notice mark M, a user can correctly recognize that the reason why un-heated water is left in a hot water storage tank 10 is that a boiling operation is going to be executed by photovoltaic power generation power in the boiling time zone after that.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a solar power generation apparatus-linked hot water storage system and a solar power generation apparatus-linked hot water supply system that perform boiling operation using electric power generated by solar power generation.

  Conventionally, in this type of photovoltaic power generation device hot water storage hot water supply system, as described in Patent Document 1, based on weather forecast information acquired from the outside, from the generated power in the photovoltaic power generation device expected the next day, When the surplus power value of the next day is predicted by subtracting the load power consumption value consumed by the electrical load other than the hot water supply device, and the surplus power value is greater than or equal to the device power consumption value predicted to be consumed by the hot water supply device on the next day Some days later, it was determined that boiling operation using photovoltaic power was possible during the daytime.

JP 2013-148287 A

  In the above prior art, when it is determined that the daytime boiling operation can be performed as described above, the amount of the boiling amount by the boiling operation in the daytime zone, the nighttime zone before the next day It is possible to reduce the amount of boiling in a boiling operation (= boiling operation using electric power supplied from outside the system) executed by a normal method during the night period from the previous day to the next day. . In this case, immediately after the nighttime period ends (in other words, immediately after the daytime period starts, for example, 7:00), all the hot water in the hot water storage tank is not in a heated state. Unheated water remains in the hot water storage tank to some extent (= the amount of boiling in the daytime boiling operation by the electric power of the photovoltaic power generation).

  As a result, the user is suspicious of the presence of unheated water in the hot water storage tank (or is concerned about running out of hot water in subsequent use), and the user has to manually operate a predetermined amount of the daytime in the daytime when the electricity rate is high. There has been a problem in that boiling operation is executed (= so-called manual hot water increase) or it may be mistaken for an operation failure of the hot water storage type hot water supply apparatus.

  In order to solve the above-mentioned problems, according to claim 1 of the present invention, a solar power generation device, a hot water storage tank for storing hot water, and a heating means for heating the hot water are provided, and the heating means is hot water in the hot water storage tank. A hot water storage hot water supply device that performs a boiling operation for heating the solar power generation device linked hot water supply hot water supply system, using the predicted power generation value of the solar power generation device, the predicted surplus power on the next day of the desired date A surplus power predicting means for determining a desired display, a display means for performing a desired display, and a nighttime for completing the boiling of the hot water storage required for the next day from the desired date to the end time of a predetermined nighttime zone from the next day Before using the electric power from the photovoltaic power generator in the daytime zone excluding the nighttime zone on the next day based on the surplus power prediction value at a predetermined first timing until the boiling start time The first timing is determined when it is determined by the daytime boiling determination means that the boiling operation in the daytime zone is possible by the daytime boiling determination means for determining whether or not the boiling operation of the hot water storage type hot water supply apparatus is possible. Display control for controlling the display means so as to perform a lunch-warming notice display corresponding to execution of the boiling operation in the daytime zone at a predetermined second timing thereafter and until the end time of the nighttime zone Means.

  Moreover, in Claim 2, it has further the apparatus power consumption prediction means which determines the apparatus power consumption predicted value which the said hot water storage type hot water supply apparatus consumes in the said next day, The said surplus power prediction means in the said next day, Using the predicted power generation value of the solar power generation device and the predicted load power consumption value consumed by the electrical load excluding the hot water storage type hot water supply device, the predicted surplus power value for the next day is determined, and the daytime boiling The determination unit determines whether or not the boiling operation is possible based on the surplus power prediction value and the device power consumption prediction value determined by the device power consumption prediction unit.

Moreover, in Claim 3, it further has a weather information acquisition means for acquiring weather information,
The surplus power prediction means determines the surplus power prediction value for the next day using the generated power prediction value based on the weather information acquired by the weather information acquisition means and the load power consumption prediction value. To do.

  According to a fourth aspect of the present invention, the display control means controls the display means so as to extinguish the lunch boiling warning display when the boiling operation of the hot water storage hot water supply apparatus is completed in the daytime zone. is there.

  Further, in claim 5, the display control means does not perform the lunch boiling warning display when it is determined by the daytime boiling judgment means that the boiling operation in the daytime zone is impossible. The display means is controlled.

  According to a sixth aspect of the present invention, in the case where the display control means determines that the boiling operation in the daytime zone is possible by the daytime boiling judgment means, in addition to the daytime boiling warning display, the daytime zone The display means is controlled so as to further display the start time of the boiling operation of the hot water storage type hot water supply apparatus.

  Further, in claim 7, when the display control means determines that the boiling operation in the daytime zone is possible by the daytime boiling judgment means, the boiling operation of the hot water storage type hot water supply device in the daytime zone. Is started, the display means is controlled so that the display of the start time of the boiling operation disappears.

  Further, in the present invention, the display control means controls the display means so as to display the amount of the hot water that is not less than a predetermined temperature in the hot water storage tank.

  Further, according to a ninth aspect of the present invention, there is provided remote operation means capable of instructing execution of a predetermined amount of the boiling operation by manual operation in the hot water storage type hot water supply apparatus.

  In the present invention, the display means is provided in the remote operation means.

  Further, in claim 11, a hot water storage tank for storing hot water, a heating means for heating the hot water, and a display means for performing a desired display are provided. In the solar power generation device linked hot water storage hot water supply device that performs boiling operation to heat the hot water in the tank, the hot water storage using electric power from the solar power generation device in the daytime zone excluding the nighttime zone on the next day of the desired date The determination was made when it was determined by the daytime boiling determination means that the boiling operation was possible in the daytime zone, by determining whether the boiling operation of the water heater was possible. The time point is set as the first timing, and a lunch boiling warning display corresponding to execution of the boiling operation in the daytime zone is performed at a predetermined second timing after the first timing and until the end time of the nighttime zone. As those having a display control means for controlling said display means.

  According to Claim 1 of this invention, the solar power generation device and the hot water storage type hot water supply device are provided. When the sunshine conditions are good, the solar power generation device can receive sunlight and generate electric power, and the hot water storage hot water supply device uses the electric power generated by this solar power generation device and the heat pump heating means A boiling operation in which hot water in the hot water storage tank is heated through the heating circuit can be performed.

  Thus, when performing a boiling operation using electric power generated by photovoltaic power generation, the electric power value supplied to the hot water storage type hot water supply device (specifically, for example, consumption of the electric load excluding the hot water storage type hot water supply device from the generated electric power value) The surplus power value obtained by subtracting the load power consumption value) needs to be large to some extent. Therefore, in order to perform the boiling operation smoothly, according to claim 1, surplus power prediction means is provided.

  That is, the surplus power predicting means uses the predicted power generation value of the solar power generation device representing the temporal variation of the power generation power value in the solar power generation device, and the surplus in the next day of a certain day (desired date). Determine the predicted power value.

  Then, based on the surplus power predicted value, whether or not the boiling operation of the hot water storage hot water supply apparatus in the daytime day of the next day can be executed is determined by the daytime boiling determination means. For example, when the predicted surplus power on the next day is relatively large (specifically, for example, when it is equal to or higher than the predicted power consumption value consumed by the hot water storage hot water supply device), it is determined that the boiling operation can be performed. Is done. Note that this determination is performed at a predetermined timing (the first time between the desired date and the next day until the night boiling start time for completing the boiling of hot water storage required for the next day by the end time of the night zone. 1 timing).

  By the way, when it is determined that the next day's daytime boiling operation can be performed as described above, the amount of the boiling amount by the boiling operation in the daytime zone, the nighttime from the desired day to the next day, The amount of boiling can be reduced by the boiling operation performed by a normal method (using electric power supplied from outside the system). As a result, all the hot water in the hot water storage tank has not been boiled up immediately after the nighttime period ends (in other words, immediately after the daytime period starts, for example, 7:00). Unheated water remains in the hot water storage tank to some extent (= the amount of boiling in the daytime boiling operation by the electric power of the photovoltaic power generation).

  Correspondingly, according to claim 1, a display control means is provided. When it is determined by the daytime boiling determination means that the daytime boiling operation can be performed as described above, an appropriate timing (specifically, the determination time is determined by the control of the display control means). At the second timing after the first timing and until the end time of the night zone), a corresponding noon-warning notice display is displayed on the display means. Thereby, the user visually recognizes the lunch boiling warning display, and the reason why unheated water remains in the hot water storage tank is the reason why the boiling operation using the power of the photovoltaic power generation is executed in the daytime. It can be correctly recognized that it is. As a result, it is possible to avoid inconveniences such as execution of the boiling operation by the manual operation and misunderstanding of operation failure. It is also possible to notify the user that the power of solar power generation can be used on the next day, that is, the weather information on the next day is generally good (clear weather).

  Moreover, according to claim 2, the surplus power predicted value determined by using the predicted power generation value of the photovoltaic power generation apparatus and the predicted load power consumption consumed by the electric load, By determining whether or not the boiling operation is possible based on the predicted apparatus power consumption value determined by the apparatus power consumption prediction means, a more accurate and reliable determination can be made.

  According to claim 3, weather information (weather forecast information, sunshine duration information, etc.) for the next day is acquired by the weather information acquisition means. Since the temporal variation of the sunshine condition on the next day is clarified by the weather information, the surplus power predicting means corresponds to the generated power prediction that represents the temporal variation of the generated power value in the photovoltaic power generation apparatus. The surplus power predicted value can be determined using the value and the load power consumption predicted value. In this way, for example, it is possible to reliably determine the surplus power prediction value using known weather information provided from outside the system.

  Further, according to claim 4, when the daytime boiling operation is completed, the daytime boiling warning display disappears, so that the user is notified that the daytime boiling operation using photovoltaic power generation has ended. It can be recognized with certainty.

  In addition, according to claim 5, by not performing the daytime boiling warning display, the next day's heating operation using the power of solar power generation is not performed, in other words, the weather information of the next day is not good. The user can be surely recognized.

  According to the sixth aspect of the present invention, it is possible to reliably notify the user of the time when the boiling operation using the power of solar power generation is started in the daytime.

  In addition, according to claim 7, by displaying the start time of the boiling operation reliably after the start of the boiling operation, for example, when the state is displayed even after the start of the boiling operation (or It is possible to avoid misunderstanding of the user (and misunderstanding with the start time of the next day's boiling operation) in the case where the state is displayed even after the completion of the boiling operation).

  Moreover, according to claim 8, immediately after the nighttime period is over, the reason why the hot water is displayed as hot water at a predetermined temperature or higher, which is in a heated state, is not all hot water in the hot water storage tank. Then, it is possible to make the user surely recognize that the boiling operation using the power of the solar power generation is executed in the daytime.

  According to the ninth aspect of the present invention, in the configuration in which the user can instruct execution of the boiling operation by manual operation via the remote control means, the user performs the boiling operation with the power of solar power generation in the daytime. Can be surely recognized, and it is possible to reliably prevent the boiling operation by the manual operation from being performed carelessly.

  Further, according to the tenth aspect, the user can be surely recognized that the boiling operation by the power of the solar power generation is executed in the daytime zone through the remote operation means at hand.

The system block diagram of the solar power generation device cooperation hot water storage type hot-water supply system of one Embodiment of this invention Functional block diagram of HEMS equipment and control unit The graph figure which expresses notionally the temporal behavior of the predicted value of the amount of power generated by solar power generation and the predicted value of the amount of power consumption in the electrical load device when the weather of the next day is predicted to be sunny The graph figure which expresses notionally the time-dependent behavior of the prediction value of the amount of electric power generated by photovoltaic power generation and the prediction value of the electric energy consumption in the electric load device when the next day's weather is predicted to be rainy or cloudy External view showing detailed configuration of remote control device The figure showing the display example of the next morning by the remote control device when performing boiling operation at night The figure showing the example of a display of the next morning by the remote control apparatus of the comparative example of one Embodiment of this invention when performing a boiling operation in the boiling time zone of the daytime day of the next day The figure showing the example of a display of the next morning by the remote control device of one embodiment of the present invention when performing the boiling operation in the daytime boiling time zone of the next day The figure showing the example of a display of the next day evening by the remote control device of one embodiment of the present invention after performing boiling operation in the daytime boiling time zone of the next day The figure showing the modification which displays a window on the display part of a remote control device The flowchart figure showing the control procedure which a HEMS apparatus performs The flowchart figure showing the first half part of the control procedure which a control apparatus performs The flowchart figure showing the latter half part of the control procedure which a control apparatus performs The flowchart figure showing the detailed procedure of step S200 The flowchart figure showing the detailed procedure of step S300

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

  The system configuration of the solar power generation apparatus-linked hot water storage hot water supply system of this embodiment is shown in FIG. In FIG. 1, a part of signal transmission / reception to be described later is not shown in order to prevent the illustration from being complicated. In FIG. 1, the solar power generation apparatus-linked hot water supply system 100 of the present embodiment includes a heat pump hot water storage hot water supply apparatus 1 installed in a building (not shown) such as a house (corresponding to a specific power consumption facility), The distribution board 2 connected to the commercial power source 49, the solar power generation panel 4 installed on the roof of the house, etc., and the solar 5 provided with an inverter 5 that converts the generated power of the solar power generation panel 4 into an AC power source An electric load device 6 (for example, simply indicated as “air conditioner” in FIG. 1), which constitutes a load other than the photovoltaic power generation device 3 and the hot water storage type hot water supply device 1, for example, an air conditioner, etc. A HEMS (= Home Energy Management System) device 7 for performing power management, a network communication network 8, and a server 9 are included.

  The HEMS device 7 is connected to the hot-water storage type hot water supply device 1 and the solar power generation device 3 so as to be capable of bidirectional communication (see broken lines; the same applies hereinafter). Thereby, the HEMS apparatus 7 can collect the usage status of the hot water storage type hot water supply device 1, the power generation information of the solar power generation device 3, and the information of the power consumption for each branch circuit of the distribution board 2. Further, the HEMS device 7 is further connected to the server device 9 via the network communication network 8 and can exchange necessary information with each other. In addition, instead of the HEMS device 7 collecting the generated power information through communication with the solar power generation device 3, the HEMS device 7 inputs the generated power to the distribution board 2, or the distribution board 3 and the commercial You may make it collect the electric power generation information of the solar power generation device 3 by monitoring transmission / reception of the electric power between the power supplies 49. FIG.

  The hot water storage type hot water supply device 1 includes a remote control device 50 (corresponding to a remote control means), 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 top of the hot water storage tank 10. The hot water discharge pipe 12 for hot water, the water supply bypass pipe 13 branched from the water supply pipe 11, the hot water from the hot water discharge pipe 12 and the water from the water supply bypass pipe 13 are set to the hot water supply set temperature set by the remote controller 50. A mixing valve 14 for mixing, a hot water supply pipe 15 for supplying hot water to a hot water supply terminal (not shown), a hot water flow rate sensor 16 for detecting the hot water flow rate and outputting a corresponding detection signal, and a detection signal corresponding to the detected hot water temperature. It has a hot water supply temperature sensor 17 for outputting and a hot water storage temperature sensor 18 for detecting the hot water storage temperature in the hot water storage tank 10 and outputting a corresponding detection signal. A plurality of hot water storage temperature sensors 18 are provided on the side surface of the hot water storage tank 10 at different height positions. For example, each of the plurality of hot water storage temperature sensors 18 detects a hot water temperature that is set in advance corresponding to the temperature of hot water in a sufficiently heated state and is equal to or higher than a predetermined threshold value. Is output to the control device 31. Thereby, based on how many of the plurality of hot water storage temperature sensors 18 are outputting the detection signal, the control device 31 is sufficiently heated in the hot water storage tank 10. The amount of hot water (ie, the amount of hot water stored) can be detected.

  The hot water storage type hot water supply device 1 further includes a heat pump device 19 (corresponding to a heat pump type heating means) for heating the hot water in the hot water storage tank 10 to the boiling target temperature. The heat pump device 19 includes a compressor 20 that compresses and conveys refrigerant to a high temperature and a high pressure, a water refrigerant heat exchanger 21 that performs heat exchange 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 outside air to the air heat exchanger 23. The blower 24 that blows air, the 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 the detection signal corresponding to the outside air temperature that is detected. An outside air temperature sensor 30 that outputs to the control device 31 is provided.

  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 part of the hot water storage tank 10, and the water side inlet of the water refrigerant heat exchanger 21. A heating return pipe 27, a heating return pipe 27 connecting the water outlet of the water-refrigerant heat exchanger 21 and the upper part of the hot water storage tank 10, a heating circulation pump 28 provided in the middle of the heating forward pipe 26, It has a boiling temperature sensor 29 that is provided in the heating return pipe 27 and outputs a detection signal to the control device 31. The heating forward pipe 26, the heating return pipe 27, and the heating circulation pump 28 constitute a heating circulation circuit (hereinafter simply referred to as “heating circulation circuits 26, 27, 28” as appropriate).

  As described above, the solar power generation apparatus-linked hot water supply system 100 according to this embodiment includes the solar power generation apparatus 3 and the hot water storage type hot water supply apparatus 1. When the sunshine conditions are good, the solar power generation device 3 can receive power from the solar power generation panel 4 to generate power, and the hot water storage hot water supply device 1 is the solar power generation device 3. Using the generated electric power, the heat pump device 19 can perform a boiling operation in which hot water in the hot water storage tank 10 is heated through the heating circulation circuits 26, 27, and 28. Conversely, when the sunshine conditions are not very good, the solar power generation device 3 cannot perform sufficient power generation by receiving sunlight, so the hot water storage type hot water supply device 1 uses the electric power supplied from the commercial power supply 49. And perform the boiling operation.

  In order to perform the boiling operation using the power generated by solar power generation as described above, at least the generated power value is somewhat large (specifically, the power value supplied to the hot water storage hot water supply device 1, that is, the generated power value). The surplus power value obtained by subtracting the load power consumption value consumed by the electric load device 6 excluding the hot water storage type hot water supply apparatus 1 is somewhat large (described later). Therefore, in order to smoothly perform the boiling operation using the electric power generated by the photovoltaic power generation, the photovoltaic power generation device cooperation hot water storage hot water supply system 100 includes the HEMS device 7 and the control device 31 in each of the configurations shown in FIG. A functional part is provided.

  That is, as shown in FIG. 2, the HEMS device 7 includes a weather information acquisition unit 32A, a generated power prediction unit 32B, a load power consumption prediction unit 32C, a device power consumption prediction unit 32D, and a surplus power prediction unit. 32E. The controller 31 includes a surplus boiling determination unit 33A, a surplus boiling control unit 40, a surplus boiling capacity calculation unit 37, a hot water usage learning unit 34, a required heat amount determination unit 35, a night boiling. A capacity calculation unit 36, a corrected night boiling capacity calculation unit 38, a night boiling control unit 39, and a daytime boiling increase control unit 42 are provided. The display control unit 33B will be described later. In addition, the allocation (distribution) of these functional units in the HEMS device 7 and the control device 31 is not limited to the illustrated example. For example, by enhancing communication contents between the HEMS device 7 and the control device 31, A part or all of the functions 32A to 32E provided in the HEMS device 7 may be provided in the control device 31 of the hot water storage type hot water supply device 1, or conversely, the control device 31. A part or all of the functions 33A, 33B, and 34 to 42 described above may be provided in the HEMS device 7.

  The weather information acquisition unit 32A (corresponding to weather information acquisition means) acquires weather information (for example, weather forecast information and sunshine time information) emitted from the server 9, for example. In addition, you may acquire the weather information as well-known information from appropriate places other than the server 9. FIG.

  The generated power prediction unit 32B (corresponding to the generated power prediction unit) is acquired from the photovoltaic power generation apparatus 3 and is acquired by the meteorological information acquisition unit 32A and the generated power amount per unit time that has changed over time in the past predetermined period. Based on the meteorological information, a specific period to be determined (in this example, for example, one day following the desired date on which the control procedure according to the flow shown in FIGS. 11 to 15 described later is executed. The generated power predicted value for each unit time in the generated power behavior of the photovoltaic power generator 3 that fluctuates over time on the “next day” is determined (calculated).

  The load power consumption prediction unit 32C (corresponding to load power consumption prediction means) has been acquired from the distribution board 2 and consumed per unit time in the past predetermined period of the electric load device 6 such as an air conditioner in the building. Based on the amount of electric power, a predicted value (including a case where the time fluctuation does not occur) of load usage power representing the power consumption per unit time of the electric load device 6 on the next day is determined (calculated).

  The device power consumption prediction unit 32D (corresponding to the device power consumption prediction means) is acquired from the hot water storage hot water supply device 1 and based on the power consumption per unit time of the hot water storage hot water supply device 1 in the past predetermined period. A predicted value (including a case where the time fluctuates or a case where the time does not fluctuate) of the apparatus power consumption representing the power consumption per unit time of the hot water storage type hot water supply apparatus 1 on the next day is determined (calculated).

  The surplus power predicting unit 32E (corresponding to surplus power predicting means) is the generated power predicted value determined by the generated power predicting unit 32B and the load used power predicted value determined by the load used power predicting unit 32C. Based on the above (specifically, subtracting the predicted load use power value from the predicted power generation value), the surplus power prediction value per unit time in the building in the surplus power behavior that fluctuates over time on the next day is determined. (calculate.

  The surplus boiling determination unit 33A has a surplus power prediction value for each unit time of the next day determined by the surplus power prediction unit 32E and a unit time for the next day determined by the device power consumption prediction unit 32D. Compare with the predicted power usage. And, on the next day, whether or not there is a time zone (a possible boiling time zone) in which the surplus power predicted value is continuously greater than or equal to the device power usage predicted value for a predetermined length or more, In the next day, it is determined whether or not a boiling operation using electric power generated by solar power generation can be performed.

  A specific example of this determination will be described with reference to FIG. FIG. 3 shows a time axis on which the time of the next day is engraved, such as “0:00”, “10:00”,..., “23:00”, “24:00” on the horizontal axis, Taking the amount of power [kWh], the predicted value of the generated power amount in the solar power generation device 3 on the next day (predicted by the generated power prediction unit 32B), the predicted load use power value in the electrical load device 6 (load use) 3 is a graph conceptually illustrating an example of the prediction by the power prediction unit 32C) and the predicted power usage value of the hot water storage hot water supply apparatus 1 (prediction by the power usage prediction unit 32D). As will be described in detail later, the determination is performed on the desired date (hereinafter referred to as “determination date”), which is the day before the next day, or on the appropriate timing (first timing, which will be described later in this example). Thus, the determination date “23:00” is also written on the horizontal axis before “0:00” on the next day.

  As shown in FIG. 3, this example is an example when the weather on the next day is predicted to be sunny based on the weather information acquired by the weather information acquisition unit 32A. In other words, as shown by the solid line graph in the figure, the predicted value of the power generation amount in the solar power generation device 3 on the next day changes from 0:00 to 6:00 at almost 0 [kWh], but the sunrise (Between 6:00 and 7:00), gradually increasing, 0.2 [kWh] at 7:00, 1.0 [kWh] at 8:00, 1.5 [kWh] at 8:30, After that, at 9:00, 1.8 [kWh] at 10:00, 2.5 [kWh] at 10:00, 3.2 [kWh] at 11:00, and 3.3 [kWh] at 12:00 It reaches a peak. After that, the amount of power generated by the solar power generation device 3 gradually decreases with the shade of the sun, becoming 3.2 [kWh] at 13:00, 2.5 [kWh] at 14:00, and thereafter 15:00. 1.8 [kWh] at 15:30, 1.5 [kWh] at 15:30, 1.0 [kWh] at 16:00, 0.2 [kWh] at 17:00, then sunset (17: 00-00) 18:00), the value after 18:00 becomes almost 0 [kWh] until 24:00.

  On the other hand, as shown by the gray bar graph in the figure, the predicted value of the load power consumption in the electrical load device 6 is 0.5 [kWh] throughout the day from 00:00 to 24:00 on the next day. ing. As a result, as shown in FIG. 3, the predicted value of the surplus power represented by “amount of generated power in the solar power generation device 3” − “amount of load power used in the electrical load device 6” is 8: 00 for the first time 0.5 [kWh], 1.0 [kWh] at 8:30, 1.3 [kWh] at 9:00, 2.0 [kWh] at 10:00, 11:00 After 2.7 [kWh], the maximum is 2.8 [kWh] at 12:00. After that, it gradually decreases, 2.7 [kWh] at 13:00, 2.0 [kWh] at 14:00, 1.3 [kWh] at 15:00, 1.0 [kWh] at 15:30 , 16:00 becomes 0.5 [kWh].

  In this example, the predicted value of the apparatus power consumption when the hot water storage type hot water supply apparatus 1 is operated is 1 [kWh] per unit time with respect to the time fluctuation of the surplus power as described above. As a result, the surplus boiling determination unit 33A satisfies “surplus power” ≧ “apparatus power consumption of the hot water storage hot water supply apparatus 1” and can secure an operation time of 3 hours or more continuously, from 8:30 to 15:30. It is determined that the hot water storage type hot water supply device 1 can be operated with the surplus power during the time period until (boiling possible time period). In FIG. 3, as a result of such determination, the boiling operation of the hot water storage type hot water supply apparatus 1 is 11:00 to 15:00 (hereinafter referred to as “boiling time” as appropriate) of the boiling possible time zone. The case where it is set to be executed (referred to as described later in detail) is shown in parallel as an example (see black bar graph). The first timing, the second timing, the lunch boiling warning mark, etc. in the figure will be described in detail later.

  As described above, in the present embodiment, the generated power prediction unit 32B determines the generated power value in the solar power generation device 3 in response to the weather information of the next day acquired by the weather information acquisition unit 32A, Based on this, the surplus boiling determination unit 33A can determine whether or not the boiling operation using solar power generation can be performed.

  In addition, the example shown in FIG. 3 is an example when the weather on the next day is predicted to be sunny as described above (as a result, it is determined that the power generation by the solar power generation is possible). On the other hand, for example, FIG. 4 shows a case where the weather on the next day is predicted to be rain or cloudy (almost no solar radiation by the sun) by the weather information acquired by the weather information acquisition unit 32A. In this case, as shown by the solid line graph in the figure, the predicted value of the power generation amount in the solar power generation device 3 changes at 0 [kWh] from 0:00 to 8:00, and with the sunrise Slightly increased, but at 9:00 0.1 [kWh] at 10:00, 0.3 [kWh] at 10:00, 0.5 [kWh] at 11:00, 0.6 [kWh] at 12:00 The peak at 13:00 after passing through remains at about 0.7 [kWh]. Thereafter, the power generation amount in the solar 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. 4, the predicted value of the surplus power represented by “the amount of generated power in the solar power generation device 3” − “the amount of power used in the electric load device 6” is 12: It occurs only slightly between 00 and 14:00, and its maximum value also remains at about 0.2 [kWh]. In such a case, the surplus boiling rise determination unit 33A determines that the boiling operation of the hot water storage type hot water supply device 1 using the surplus power is impossible. In FIG. 4, as a result of such determination, the boiling operation of the hot water storage type hot water supply apparatus 1 is performed by supplying power from the commercial power supply 49 (without using power generated by solar power generation) as usual. Is set to be executed in an appropriate time zone (3: 0 to 7:00 in this example) in an inexpensive night zone (23: 0 to 7:00 in this example). (Refer to the black bar graph. Details will be described later). As in the case described above, the first timing and the lunch boiling warning mark in the figure will be described in detail later.

  Next, a detailed configuration of the remote controller 50 is shown in FIG. In FIG. 5, the remote control device 50 has a display unit 60 (corresponding to display means) and a “bath automatic” for automatically performing hot water filling from the hot water storage tank 10 into the bathtub or hot water after filling. "Switch 71", "Call" switch 72 for making a call in the bathroom, speaker 73, various numerical values such as the hot water supply temperature, etc., and the upward setting of the cursor in the display unit 60 The cross key 74 for performing the leftward / downward / horizontal movement operation, the “menu / decision” switch 75, and the boiling operation by manual operation to increase the amount of hot water stored in the hot water storage tank 10 by a predetermined amount. A "tank hot water replenishment" switch 76, and an automatic hot water refining function for boiling up the daytime boiling increase capacity when the amount of hot water stored in the hot water storage tank 10 decreases below the predetermined threshold value. Various guides including explanations of a plurality of operation modes (detailed explanation is omitted) such as an “economy mode” prepared in advance and a “saving mode (eco) mode” that is paused by operation (only on the day of operation) An “eco guide” switch 78 for displaying on the display unit 60 and a “return” switch 79 for returning the display screen displayed on the display unit 60 to the previous display screen are provided.

  The display unit 60 is configured to be able to switch a plurality of display screens each displaying predetermined contents. In the illustrated display screen 60A, a date and time display unit 61 for displaying the current date and time (in this example, Friday, May 31, 22:30) and the temperature of hot water in the bathtub (in this example, 40 ° C.) A bath temperature display unit 62 for displaying the hot water supply temperature display unit 63 for displaying the hot water supply temperature (40 ° C. in this example), a hot water storage amount display unit 64 for displaying the hot water storage amount in the hot water storage tank 10, and the A network display unit 65 indicating that it is connected to the server 9 via the network communication network 8, and which mode is selected from among the plurality of modes (in this example, “auto energy saving” mode. And a mode display unit 66 representing (omitted).

  The hot water storage amount display unit 64 displays the hot water storage amount in the hot water storage tank 10 in accordance with the detection result of the hot water storage temperature sensor 18 under the control of the display control unit 33B. In the illustrated example, the hot water storage amount display unit 64 can display the hot water storage amount in five stages by five display elements 64A to 64C. That is, when almost all of the hot water storage tank 10 is in a sufficiently heated state (the hot water storage amount is full), all the display elements 64A, 64B, 64C, 64D, 64E is lit and displayed. On the contrary, when the hot water storage amount in the hot water storage tank 10 is almost empty, all the display elements 64A, 64B, 64C, 64D, 64E are turned off, and the hot water storage amount gradually increases from this state. From the lower display element 64A, a display element 64B, a display element 64C, a display element 64D, and a display element 64E are added and displayed in the storefront. The illustrated example shows a state in which the hot water storage amount is about 1/5 of the total capacity in the hot water storage tank 10, and only the lowermost display element 64A among the display elements 64A to 64E is lit and displayed. At the same time, the remaining four display elements 64B, 64C, 64D, and 64E are turned off (represented by broken lines in the figure for clarity).

  Here, in the example shown in FIG. 5, the amount of hot water stored in the hot water storage tank 10 is 1 / full tank due to the use of hot water during housework or bathing (see 22:30 time display on the date display unit 61). The figure shows a case where it has been reduced to about 5 (only the lowermost display element 64A of the hot water storage amount display section 64 is lit). As already described, in the present embodiment, when the sunshine condition expected on the next day (June 1 of the next day of May 31 in this example) is good, the next day (June 1st) ), The boiling operation can be performed during the boiling possible time zone using the electric power generated by the solar power generation device 3. When the sunshine conditions expected on the next day (June 1) are not very good, the nighttime zone (in this example, 23: 00 to 7:00) where the unit price of power charges on the next day (June 1) is low. The boiling operation is performed using electric power supplied from the commercial power source 49.

  First, the remote control device at 7:30 on the next morning (morning on the next day) when the sunshine conditions expected on the next day are not so good as described above and the entire amount of boiling operation is performed in the nighttime zone A display example of 50 on the display unit 60 is shown in FIG. As a result of the hot water boiling operation in the hot water storage tank 10 being performed during the nighttime (3:00 to 7:00 in the example described with reference to FIG. 4), the result of June 1 shown in FIG. At 7:30 in the morning, the amount of hot water stored in the hot water storage tank 10 is full, and correspondingly, all the display elements 64A to 64E of the hot water storage amount display section 64 are lit.

  On the other hand, when the sunshine condition expected on the next day is good as described above, and the boiling operation is performed in the boiling time zone of the daytime on the next day, The display on the display unit 60 is different from the content shown in FIG. That is, in the present embodiment, the amount of the boiling amount scheduled to be boiled in the boiling time zone on June 1 (in the example described with reference to FIG. 3 from 11:00 to 15:00), It is possible to reduce the amount of boiling due to the boiling operation by the electric power from the commercial power source 49 during the nighttime. As a result, as shown in FIG. 7 as a comparative example, all the hot water in the hot water storage tank 10 has been boiled up even at the stage of 7:30 in the morning on June 1. In other words, the unheated water remains in the hot water storage tank 10 to some extent (= the amount of boiling by the boiling operation in the boiling time zone by the power of the photovoltaic power generation). In other words, in this example (unlike FIG. 6), the amount of hot water stored in the hot water storage tank 10 remains about 3/5 of the full tank state, and correspondingly, all the display elements 64A to 64E of the hot water storage amount display section 64 Among them, only the three display elements 64A, 64B, 64C from the bottom are turned on, and the remaining two display elements 64D, 64E are turned off.

  In this case, the user unconsciously contrasts with the display state as shown in FIG. 6, and the display elements 64A to 64E are not fully lit even though the nighttime zone is over (= the hot water storage). Suspiciously the presence of unheated water in the tank 10), or concerned about running out of hot water after use at 7:30, the “tank hot water” switch 76 is turned on in the daytime when the electricity rate is high. There is a possibility that a predetermined amount of the above-mentioned boiling operation is executed by manual operation (= so-called manual hot water increase), or misunderstood as an operation failure of the hot water storage type hot water supply apparatus 1.

  Therefore, according to the present embodiment, the control of the display control unit 33B (corresponding to the display control means) provided in the control device 31 gives an advance notice of the boiling operation based on the photovoltaic power generation as shown in FIG. A mark M (corresponding to a lunchtime warning notice display, hereinafter referred to as a “daytime warning notice mark”) is displayed on the display screen 60A. That is, in the present embodiment, the determination by the surplus boiling determination unit 33A is performed in the night zone (this example) from the determination date (May 31 in this example) to the next day (June 1 in this example). Then, at 23: 00 to 7:00), a predetermined timing (the first timing described above) until a night boiling start time (see step S62 in FIG. 13 described later) when the night boiling described later starts. Then, on May 31st 23:00, it is performed in the above-described FIGS. 3 and 4 and the flow of FIG. And the display of the daytime boiling warning mark M by the display unit 61 is the end time (in this example) after the first timing and at the end of the nighttime zone (23: 0 to 7:00 in this example). Then, at a predetermined timing (corresponding to the second timing. For example, 3:00 on June 1; refer to the flow in FIG. 3 and FIG. 12 described later) until June 1 at 7:00. Is called. In addition, the display of the above-mentioned lunch boiling warning mark M started at the second timing is continuously displayed until the disappearance described later.

  After completion of boiling operation in the boiling time zone (in this example, 11:00 to 15:00, see FIG. 3) by the power of the photovoltaic power generation in a state where the lunch boiling warning mark M is displayed. FIG. 9 shows a display example on the display unit 60 of the remote control device 50 at 16:30 on the next day. As shown in the figure, the hot water boiling operation in the hot water storage tank 10 was performed from 11:00 to 15:00, and as a result, the amount of hot water stored in the hot water storage tank 10 became full. The display elements 64D and 64E of the hot water storage amount display section 64 that are not lit at 7:30 in the morning of the day are turned on, so that all the display elements 64A to 64E are lit. Further, when the boiling operation in the boiling time period is completed at 15:00, the above-mentioned lunch boiling warning mark M (see FIG. 8) that has been displayed so far disappears.

  At this time, in this embodiment, while the lunch boiling warning mark M is displayed on the display screen 60A of the display unit 60 as described above, the boiling time is controlled by the control of the display control unit 33B at the same time. A time display T (in this example, 11:00, hereinafter referred to as “boiling start time display” as appropriate) representing the start time of the belt boiling operation is performed on the display screen 60A. That is, the boiling start time display T is displayed at the second timing together with the lunch boiling notice mark M, and disappears when the boiling operation in the boiling time period is completed at 15:00.

  Note that the display unit 60 of the remote control device 30 has a so-called power saving (sleep) function, and the backlight is turned off during sleep, and the backlight is turned on when the user performs some operation on the remote control device 30. It may be configured to turn on (become bright as the entire display unit 60). In this case, as described above, during the completion of the boiling operation from the second timing to the boiling time period, in a state where there is no user operation, the backlight is turned off (the entire display unit 60 is dark). The display of the daytime boiling mark M and the boiling start time display T is added to the display screen 60A. Alternatively, during the completion of the boiling operation from the second timing to the boiling time period, the backlight is turned on without any user operation, and the entire display unit 60 is brightly displayed in the display screen 60A. The display of the above-mentioned boiling-up mark M and the above-mentioned boiling start time display T may be added (the display of the above-mentioned boiling-up mark M and the above-mentioned boiling start time display T is added at the second timing. Only immediately after, the backlight may be brightened). Furthermore, when some operation is performed by the user, as shown in FIG. 10, the window 60W is displayed so as to cover or interrupt the display screen 60A shown in FIG. 8 (or switched to an independent separate screen). It may be configured). In the window 60W shown in FIG. 10, a text message 80 of “Today, June 1st, 11:00 when boiling water is generated by solar power” is displayed, and the user starts the boiling from 11:00. It is intended to reliably notify that the boiling operation with the power of the photovoltaic power generation is performed in the upper time zone. In addition, instead of the daytime boiling mark M and the boiling start time display T in FIG. 8, the window 60W or a display area having an equivalent display function may be displayed. In this case, the window 60 </ b> W corresponds to the display of the lunch boiling warning display and the start time of the boiling operation.

  In addition, an appropriate display (corresponding to the display means in this case) provided with the display function of the display screen 60A of the display unit 60 described above other than the remote control device 50, for example, the control device 31 or the HEMS device 7 is provided. You may have. In this case, a display control unit (corresponding to display control means in this case) having a function equivalent to that of the display control unit 33B is provided in the control device 31 and the HEMS device 7, and the display control similar to the above is performed on the display. You may make it perform.

  Next, control procedures executed by the HEMS device 7 and the control device 31 in order to realize the above-described method will be described with reference to the flowcharts of FIGS. 11, 12, 13, 14, and 15.

  FIG. 11 shows a control procedure executed by the HEMS device 7. In FIG. 11, first, in step S110, the HEMS device 7 sets the start time (23:00 in this example, 23:00 in this example) where the power unit price is low (in this example, 23:00, the same applies hereinafter). It is determined whether or not. The determination is not satisfied until the night zone start time is reached (S110: NO), and the loop waits. When the night zone start time is reached, the determination is satisfied (S110: YES), and the process proceeds to step S120.

  In step S120, the HEMS device 7 acquires the weather information from the server 9 by the weather information acquisition unit 32A. The weather information acquisition unit 32A periodically acquires the weather information from the server 9 and stores the latest data in an appropriate location. When this flow is started, at the timing of the step S120, You may make it read and use the data of the weather information memorize | stored in the said appropriate location.

  Thereafter, the process proceeds to step S130, where the HEMS device 7 uses the generated power prediction unit 32B based on the amount of generated power per unit time in the past predetermined period of the solar power generation device 3 and the weather information acquired in step S120. Then, a predicted power generation value for each unit time of the solar power generation device 3 in a specific period (in this example, the next day, the same applies hereinafter) is determined (calculated).

  In step S140, the HEMS device 7 uses the load power consumption prediction unit 32C to calculate the electric load device on the next day based on the load power consumption per unit time in the past predetermined period of the electric load device 6. 6 is used to determine (calculate) a predicted load power consumption value per unit time.

  Thereafter, in step S150, the HEMS device 7 uses the apparatus power consumption prediction unit 32D to determine the hot water storage hot water supply for the next day based on the apparatus power consumption per unit time of the hot water storage hot water supply apparatus 1 in the past predetermined period. A predicted apparatus power consumption value for each unit time of the apparatus 1 is determined (calculated). As already described, the controller 31 of the hot water storage hot water supply device 1 may have the same function as the device power consumption prediction unit 32D, and the device power consumption predicted value may be determined. At this time, the control device 31 itself may learn its own power consumption by a known method, or may determine its own power consumption as a constant value. In this case, only the surplus power predicted value (described later) is output to the control device 31 in step S180 described later, and only the surplus power predicted value (described later) is acquired by the control device 31 in step S10 of FIG. 12 described later. Is done.

  Then, the process proceeds to step S160, where the HEMS device 7 uses the surplus power prediction unit 32E to determine the generated power predicted value determined in step S130 and the load usage per unit time of the electrical load device 6 in step S140. Based on the predicted power value, a surplus predicted power value for each unit time in the building on the next day is determined (calculated).

  Thereafter, in step S180, the HEMS device 7 outputs the apparatus power consumption predicted value determined in step S150 and the surplus power predicted value determined in step S160 to the control apparatus 31 and ends this flow.

  12 to 15 show control procedures executed by the control device 31. FIG. First, in FIG. 12, in step S <b> 2, the control device 31 performs a boiling impossible flag F indicating that the boiling operation of the hot water storage type hot water supply device 1 using the surplus power is impossible, and the daytime boiling warning mark. A mark display flag Fd indicating that M is displayed is initialized to 0.

  Thereafter, in step S5, the control device 31 determines whether or not the night time start time (23:00) has been reached, as in step S110 of FIG. Until the night zone start time is reached, the determination is not satisfied (S5: NO), and the loop waits. When the night zone start time is reached, the determination is satisfied (S5: YES), and the process proceeds to step S10.

  In step S10, the control device 31 acquires the device power consumption predicted value and the surplus power predicted value output in step S180 of FIG. Thereafter, the process proceeds to step S25. In step S25, the control device 31 uses the average or standard deviation based on the amount of hot water learned per day during the past predetermined period learned by the hot water amount learning unit 34 by the required heat amount determination unit 35. Is used to determine (calculate) the necessary heat amount on the next day. In addition, you may calculate this required heat amount as a required hot water amount of predetermined temperature (for example, 43 [degreeC]) conversion.

  Thereafter, in step S30, the control device 31 may use the necessary heat amount determining unit 35 to set the necessary hot water amount determined in step S25 and other conditions such as the outside air temperature (or the water supply temperature) acquired in step S10. ) To determine the boiling target temperature. The boiling target temperature is set as low as possible between, for example, 65 [° C.] to 75 [° C.]. Particularly, when the required amount of hot water is large, the outside air temperature is low, or the water supply temperature is If it is low (compared to other cases), it is set higher.

  Then, in step S35, the control device 31 divides the necessary heat determined in step S30 by the temperature difference between the boiling target temperature and the feed water temperature by the night boiling capacity determination unit 36, and the necessary amount. Convert to capacity and use the night boiling capacity when performing night boiling. In addition, when the calculated required capacity calculated in this way exceeds the capacity of the hot water storage tank 10, the capacity of the hot water storage tank 10 may be set as the night boiling capacity. Thereafter, the process proceeds to step S40.

  In step S40, the control device 31 uses the surplus boiling-up determination unit 33A to estimate the surplus power prediction value for each unit time of the next day acquired in step S10 and the device power consumption prediction for the unit time of the next day. Compare the value. Then, on the next day, whether or not the boiling operation using the power generated by photovoltaic power generation can be performed on the next day (predetermined length, that is, the surplus power predicted value continuously for 3 hours or more in the above example). It is determined whether or not there is a boiling-up possible time zone that is equal to or greater than the device power consumption predicted value. If the boiling-up possible time zone is not found, the determination is not satisfied (S40: NO), and the process proceeds to step S46 described later. If the boiling-up possible time zone is found, the determination is satisfied (S40: YES), and the routine goes to Step S42. In addition, the function of the said excess boiling determination part 33A of the control apparatus 31 which performs this step S40 functions as a daytime boiling determination means. Further, step S40 may be executed at a timing prior to step S5 (together with previous steps S2 and S10 to step S35), that is, before the start time of the night zone on the determination date. Good. In this case, the timing corresponds to the first timing.

  In step S42, the control device 31 causes the boiling determination unit 33A to perform a time division (excess boiling) in which the boiling operation is actually performed from the boiling possible time zone found in step S40 by an appropriate method. Time). Thereafter, the process proceeds to step S45.

  In step S <b> 45, the controller 31 causes the surplus boiling capacity calculation unit 37 to perform the predetermined heating of the heat pump device 19 during the excess boiling time determined in step S <b> 42. The surplus boiling capacity that can be boiled up to the boiling target temperature with the capacity is calculated.

  In step S50, the control device 31 subtracts the surplus boiling capacity calculated in step S45 from the night boiling capacity calculated in step S35 by the corrected night boiling capacity calculation unit 38. Then, the corrected night boiling capacity that is actually heated in the night zone is calculated. Thereafter, the process proceeds to step S55 described later.

  On the other hand, in step S46, where the determination in step S40 is not satisfied and the process proceeds to step S46, the controller 31 is unable to perform the boiling operation of the hot water storage hot water supply device 1 using the surplus power by setting the boiling impossible flag F. It is 1 representing the case.

  Thereafter, in step S48, the control device 31 sets the corrected night boiling capacity to 0 by the corrected night boiling capacity calculation unit 38. Thereafter, the process proceeds to step S55.

  In step S55, the control device 31 uses the night boiling control unit 39 based on the detection results of the plurality of hot water storage temperature sensors 18 to store hot water capacity (remaining hot water capacity) that can be regarded as hot water in a sufficiently heated state. Is calculated.

  Further, in the subsequent step S60, the control device 31 calculates the start time of night boiling by the night boiling control unit 39.

  That is, when the determination in step S40 is satisfied (S40: YES) and the process proceeds to step S60 through steps S42 to S50 and S55, the night boiling control unit 39 calculates in step S50. The boiling time required to boil the capacity obtained by subtracting the remaining hot water capacity calculated in step S55 from the corrected night boiling capacity is calculated, and the boiling time is calculated at the end time of the night zone (for example, 7:00). The night boiling start time is calculated that is appropriate for completion (eg, by subtracting the required boiling time from the night time end time).

  On the other hand, if the determination in step S40 is not satisfied (S40: NO) and the process proceeds to step S60 via step S46, step S48, and step S55, the night boiling control unit 39 causes the step S35 to A boiling time required to boil the capacity obtained by subtracting the remaining hot water capacity calculated in step S55 from the calculated night boiling capacity is calculated, and the boiling time is increased at the end time of the night zone (for example, 7:00). A night boiling start time that is appropriate for completion (eg, by subtracting the required boiling time from the night time end time) is calculated.

  Then, the process proceeds to step S62 in FIG. 13, and the control device 31 determines whether or not the time (current time) at this time is the night boiling start time calculated in step S60 by the night boiling control unit 39. judge. If it is not the night boiling start time, the determination is not satisfied (S62: NO), and the process proceeds to step S63.

  In step S63, the control device 31 determines whether or not the non-boiling flag F is 1 by the display control unit 33B (that is, the boiling operation of the hot water storage type hot water supply device 1 using the surplus power is impossible). It is determined whether or not there is a determination. If F = 1, the determination is satisfied (S63: YES), and the process returns to step S62 to repeat the same procedure. If F = 0 remains, the determination is not satisfied (S63: NO), and the process proceeds to step S64.

  In step S64, the control device 31 causes the display control unit 33B to display the current time at the display start timing of the lunch warning mark M (that is, the second timing, 3:00 in the above example, and so on). It is determined whether or not. If it is not the display start timing, the determination is not satisfied (S64: NO), and the process returns to step S62 and the same procedure is repeated. If the display start timing is reached, the determination is satisfied (S64: YES), and the routine goes to Step S66.

  In step S66, the control device 31 causes the display control unit 33B to output a notice display control signal for causing the display unit 60 of the remote control device 50 to display the lunch-warming notice mark M. As a result, as shown in FIG. 8, at the display screen 60A, at the start-up time (11:00 in this example) of the surplus boiling notice mark M and the surplus boiling time determined in step S42. The boiling start time display T indicating the corresponding start time is displayed (display start). Thereafter, the process proceeds to step S68.

  In step S68, the control device 31 sets the mark display flag Fd to 1 by the display control unit 33B. Thereafter, the process returns to step S62, and the same procedure is repeated.

  On the other hand, if the current time is the night boiling start time in step S62, the determination is satisfied (S62: YES), and the process proceeds to step S200.

  In step S <b> 200, the control device 31 performs night boiling processing by the night boiling control unit 39. The detailed procedure of step S200 is shown in FIG.

  In FIG. 14, first, in step S <b> 215, the controller 31 controls the heat pump device 19 (specifically, the compressor 20, the blower 24, and the heating) of the hot water storage hot water supply device 1 by the night boiling control unit 39. A night pumping operation in which the water extracted from the lower part of the hot water storage tank 10 is heated to the boiling target temperature determined in the step S30 and sequentially stacked from the upper part of the hot water storage tank 10 by controlling the circulation pump 28, etc. Start.

  Thereafter, in step S216, after the night boiling operation is started as described above by the night boiling control unit 39, the control device 31 raises the corrected night boiling capacity calculated in step S50. It is determined whether or not the hot water storage temperature sensor 18 has detected (or the current time during operation is the end time of the nighttime zone). If the corrected night boiling capacity is not heated (or the end time of the night zone is not reached), the determination is not satisfied (S216: NO), and the process proceeds to step S223.

  In step S223, the control device 31 determines whether or not the mark display flag Fd is 1 (that is, whether or not the lunch warning notice mark M and the boiling start time display T have already been made by the display control unit 33B. )). If Fd = 1, the determination is satisfied (S223: YES), and the process returns to step S216 to repeat the same procedure. If Fd = 0 remains, the determination is not satisfied (S223: NO), and the process proceeds to step S224.

  In step S224, as in step S64, the control device 31 determines whether or not the current time has reached the display start timing (second timing) by the display control unit 33B. If it is not the display start timing, the determination is not satisfied (S224: NO), and the process returns to step S216 and the same procedure is repeated. If the display start timing is reached, the determination is satisfied (S224: YES), and the routine goes to Step S226.

  In step S226, as in step S66, the control device 31 causes the display control unit 33B to output a notice display control signal for causing the display part 60 to display the sunrise warning mark M. As a result, the lunch boiling warning mark M and the boiling start time display T are displayed on the display screen 60A as described above. Thereafter, the process proceeds to step S228.

  In step S228, as in step S68, the control device 31 sets Fd = 1 by the display control unit 33B. Thereafter, the process returns to step S216 and the same procedure is repeated.

  On the other hand, in the step S216, when the corrected night boiling capacity is raised (or when the end time of the night zone is reached), the determination is satisfied (S216: YES), and it is regarded that the night boiling operation is completed. Then, the process proceeds to step S218.

  In step S218, the control device 31 controls the heat pump device 19 by the night boiling control unit 39, and stops the night boiling operation started in step S215. At this time, unheated water remains in the lower part of the hot water storage tank 10 by the same capacity as the excess boiling upper capacity calculated in step S45. Thereafter, returning to FIG. 13, the process proceeds to step S71.

  In step S71, as in step S63, the controller 31 determines whether the boiling impossible flag F is 1 (that is, the boiling operation of the hot water storage type hot water supply device 1 using the surplus power is not possible). Or not) is determined. If F = 1, the determination is satisfied (S71: YES), and the routine goes to Step S80 described later. If F = 0 still remains, the determination is not satisfied (S71: NO), and the process proceeds to step S72.

  In step S72, the control device 31 determines whether or not the end time (7:00) of the nighttime zone has been reached. If it is not the night time end time, the determination is not satisfied (S72: NO), and the routine goes to Step S73.

  In step S73, as in step S223, the control device 31 causes the display control unit 33B to determine whether or not the mark display flag Fd is 1 (that is, the lunch warning notice mark M and the boiling start time already). It is determined whether or not the display T has been made. If Fd = 1, the determination is satisfied (S73: YES), and the process returns to step S72 and the same procedure is repeated. If Fd = 0 remains, the determination is not satisfied (S73: NO), and the process proceeds to step S74.

  In step S74, as in step S224, the control device 31 determines whether or not the current time has reached the display start timing (second timing) by the display control unit 33B. If the display start timing is not reached, the determination is not satisfied (S74: NO), and the process returns to step S72 and the same procedure is repeated. If the display start timing is reached, the determination is satisfied (S74: YES), and the routine goes to Step S76.

  In step S76, as in step S226, the control device 31 causes the display control unit 33B to output a notice display control signal for causing the display part 60 to display the lunch warning sign M. As a result, the lunch boiling warning mark M and the boiling start time display T are displayed on the display screen 60A as described above. Thereafter, the process proceeds to step S78.

  In step S78, as in step S228, the control device 31 sets Fd = 1 by the display control unit 33B. Thereafter, the process returns to step S72 and the same procedure is repeated.

  On the other hand, if the night zone end time is reached in step S72, the determination is satisfied (S72: YES), and the routine goes to step S300. If the second timing as the display start timing is set to the same time as the night time end time (7:00 in this example), the step after the determination in step S72 is satisfied. The procedure equivalent to that in steps S74, S76, and S78 may be executed before shifting to S300.

  In step S300, the control device 31 performs a surplus boiling process by the surplus boiling control unit 40. The detailed procedure of step S300 is shown in FIG.

In FIG. 15, first, at step S320, the control device 31 causes the surplus boiling control unit 40 to start the boiling time section (the surplus boiling up) at which the time (current time) at this time is determined at step S42. It is determined whether or not the start time is 11:00 in the above example. The determination is not satisfied until the surplus boiling start time is reached (S320: NO), and a loop standby is performed. If it is the surplus boiling start time, the determination is satisfied (S320: YES), and the routine goes to Step S322.

  In step S322, the control device 31 causes the excess boiling control unit 40 to perform the heat pump device 19 of the hot water storage type hot water supply device 1 (specifically, the compressor 20, the blower 24, the heating circulation pump 28, etc.). The excess boiling operation is started in which the water taken out from the lower part of the hot water storage tank 10 is heated to the boiling target temperature determined in the step S30 and sequentially stacked from the upper part of the hot water storage tank 10.

  After that, in step S324, the controller 31 boiled the excess boiling capacity calculated in step S45 after the excess boiling operation was performed as described above by the excess boiling control unit 40. Is detected by the hot water storage temperature sensor 18 (or the current time during operation is the end time of the boiling time section). If the surplus boiling capacity has been boiled (or the end time of the boiling time section is reached), the determination is satisfied (S324: YES), and it is considered that the surplus boiling operation has been completed, and step S326 is performed. Move on.

  In step S326, the control device 31 controls the heat pump device 19 with the surplus boiling up control unit 40, and stops the surplus boiling up operation started in step S322. At this time, as described above, since unheated water remains in the lower part of the hot water storage tank 10 at the same capacity as the excess boiling capacity when the night boiling operation is completed, the time until the start of the excess boiling operation is reached. Even if no hot water is supplied at all, it is possible to continuously perform the surplus boiling operation using the entire amount of surplus power that was initially predicted. Thereafter, the process proceeds to step S328.

  In step S328, the control device 31 causes the display control unit 33B to stop outputting a notice display control signal for causing the display unit 60 of the remote control device 50 to display the sunrise warning mark M. As a result, the lunch boiling warning mark M and the boiling start time display T, which have been started in the step S66, the step S226, or the step S76, disappear (display end). After the surplus boiling operation is completed as described above, the process returns to FIG. 13 and proceeds to step S96. It should be noted that the boiling start time display T may be extinguished at the timing of the start of surplus boiling in step S322.

  In step S96, the controller 31 causes the daytime boiling point increase control unit 42 to set the time (current time) at this time to the end time (eg, 23:00) of the daytime zone (eg, 7:00 to 23:00). It is determined whether or not. If it is the daytime end time, the determination is satisfied (S96: YES), the process returns to step S2 shown in FIG. 12, and the same procedure is repeated. If it is not the daytime end time, the determination is not satisfied (S96: NO), and the routine goes to Step S92.

  In step S92, the control device 31 determines whether or not the hot water storage temperature sensor 18 at the uppermost part of the hot water storage tank 10, for example, has decreased below a predetermined hot water danger temperature by the daytime boiling point increase control unit 42. If the temperature is higher than the hot water danger temperature, the determination in step S92 is not satisfied (S92: NO), and the same procedure is repeated by returning to step S96. If it is below the hot water danger temperature, the determination in step S92 is satisfied (S92: YES), and it is considered that the hot water is out, and the process proceeds to step S94.

  In step S94, the control device 31 controls the heat pump device 19 by the daytime boiling increase control unit 42, and performs a hot water boiling increase operation for a predetermined time (for example, 1 hour) for eliminating the hot water shortage. Thereafter, the process returns to step S96 and the same procedure is repeated.

  As described above, according to the photovoltaic power generation apparatus linked hot water storage system 100 of the present embodiment, the surplus boiling point determination unit 33A acquires the surplus power expected value in step S10 and thereafter (in other words, After the expected surplus power is determined in step S160), the end time of the night zone (June 1) from the determination date (May 31 in the above example, the same applies hereinafter) to the next day (June 1). The first timing (May 31 23:00) until the night boiling start time for completing the boiling of the required hot water storage volume on the next day by 7:00) It is determined whether or not the boiling operation can be executed in the boiling time zone on the next day. If it is determined that execution is possible, the second timing (June 1) after the first timing and before the end time (June 1, 7:00) when the nighttime zone ends. On the day of 3:00), the above-mentioned notice mark M on the daytime boiling is displayed by the display unit 61.

  As a result, the user visually recognizes the daytime boiling warning mark M, and the reason why unheated water remains in the hot water storage tank 10 is that the reason is that in the daytime period (specifically, the boiling time period in detail) It can be correctly recognized that the boiling operation by the power of photovoltaic power generation is executed. As a result, it is possible to avoid inconveniences such as execution of the boiling operation by the manual operation and misunderstanding of operation failure. It is also possible to notify the user that the power of solar power generation can be used on the next day, that is, the weather information on the next day is generally good (clear weather).

  In the present embodiment, in particular, in step S40 of FIG. 12, the surplus power prediction determined using the generated power predicted value of the solar power generation device 3 and the predicted load power consumption consumed by the electrical load device 6 is used. By determining whether or not the boiling operation can be performed in the boiling time zone on the next day based on the value and the predicted apparatus power consumption value determined by the apparatus power consumption prediction unit 32D, a more accurate and reliable determination It can be performed.

  In the present embodiment, in particular, weather information (weather forecast information, sunshine duration information, etc.) for the next day is acquired by the weather information acquisition unit 32A, and the surplus power prediction unit 32E corresponds to the solar power generation device 3 corresponding thereto. The surplus power predicted value is determined using the generated power predicted value representing the temporal variation of the generated power value at and the load power usage predicted value. In this way, using the well-known weather information provided from the server 9 (or may be provided from the outside of the photovoltaic power generation device linked hot water storage system 100), a reliable surplus power predicted value is obtained. Decisions can be made.

  Further, particularly in the present embodiment, the day-boiling warning mark M disappears when the boiling operation in the boiling time period is completed (see step S328 in FIG. 15). Thereby, it can be made to recognize a user reliably that the boiling operation of the said boiling time zone using photovoltaic power generation which announced was completed. In addition to the completion of the boiling operation during the boiling time zone, the daytime boiling warning is also given when the night zone start time (23:00) is reached during the daytime boiling operation by the user's manual operation. The mark M and the boiling start time display T may disappear.

  Further, in the present embodiment, in particular, when it is determined that the boiling operation in the daytime period is not possible, the lunch boiling warning mark M is not displayed (see FIG. 6), so that the power of photovoltaic power generation on the next day is displayed. The user can be surely recognized that the use-up operation is not performed, in other words, that the weather information of the next day is not good.

  In the present embodiment, in particular, when it is determined that the boiling operation is possible in the boiling time zone, the boiling start time display T is further displayed in addition to the day-boiling notice mark M. Thereby, it is possible to reliably notify the user of the time when the boiling operation using the power of solar power generation is started in the daytime. Further, the boiling start time display T is extinguished after the start of the boiling operation (see step S328 in FIG. 15), so that the misunderstanding of the user (and the next day, That is, misunderstanding with the start time of the boiling operation on June 2 can be avoided.

  In the present embodiment, in particular, the hot water storage amount in the hot water storage tank is displayed by the hot water storage amount display section 64. Thereby, immediately after the nighttime period is over, the reason why the amount of hot water stored in the hot water storage tank 10 is not full (only the display elements 64A to 64C are displayed) is the power of solar power generation in the daytime period thereafter. This is because the user can be surely recognized that the boiling-up operation is performed.

  Further, in the present embodiment, in particular, the remote control device 50 capable of instructing execution of a predetermined amount of the boiling operation in the hot water storage type hot water supply device 1 by manual operation is provided. Accordingly, in a configuration in which the user can instruct execution of the boiling operation by manual operation via the remote control device 50, the user can be surely recognized that the boiling operation by the power of solar power generation is performed in the daytime. It is possible to reliably prevent the boiling operation by the manual operation from being performed carelessly. At this time, the display unit 60 of the remote control device 50 displays the daylighting warning mark so that the boiling operation by the power of solar power generation is executed in the daytime. The user can be surely recognized via the device 50.

  The present invention is not limited to the above embodiment and can be applied without changing the gist thereof. For example, instead of the heat pump device 19, an electric heater type heating means may be used. is there.

  Also, each functional unit provided in the HEMS device 7 (weather information acquisition unit 32A, generated power prediction unit 32B, load usage power prediction unit 32C, device usage power prediction unit 32D, and surplus power prediction unit 32E). At least one of them may be provided in the server 9.

  Further, in the above, the arrows shown in each drawing such as FIG. 2 show an example of the signal flow, and do not limit the signal flow direction.

  The flowcharts shown in FIGS. 11 to 15 are not intended to limit the present invention to the procedure shown in the above flow, but to add / delete procedures or change the order within the scope of the gist and technical idea of the invention. You may do.

DESCRIPTION OF SYMBOLS 1 Hot water storage type hot water supply device 3 Solar power generation device 6 Electric load equipment 7 HEMS equipment 10 Hot water storage tank 19 Heat pump device (heat pump type heating means)
26 Heating pipe (Heating circuit)
27 Heating return pipe (Heating circuit)
28 Heating circulation pump (heating circulation circuit)
31 Control Device 32A Weather Information Acquisition Unit (Meteorological Information Acquisition Unit)
32B Power generation prediction unit (power generation prediction means)
32C Load power consumption prediction unit 32D Device power consumption prediction unit (device power consumption prediction means)
32E Surplus power prediction unit (surplus power prediction means)
33A Excess boiling point determination unit 33B Display control unit (display control means)
49 Commercial power supply 50 Remote control device (remote control means)
60 Display section (display means)
60A Display screen 64 Hot water storage amount display section 64A to E Display element 100 Solar power generation device hot water storage hot water system M M
T Boiling start time display

Claims (11)

A solar power generator,
A hot water storage tank for storing hot water, a heating means for heating the hot water, and a hot water storage hot water supply apparatus for performing a boiling operation in which the heating means heats the hot water in the hot water storage tank;
In a hot water storage system linked with a solar power generation device having
Surplus power prediction means for determining a surplus power prediction value on the next day of a desired date using the generated power prediction value of the solar power generation device;
Display means for performing desired display;
The surplus at a predetermined first timing between the desired date and the end time of the predetermined nighttime period from the desired day to the nighttime boiling start time for completing the boiling of the hot water storage amount required for the next day Daytime boiling determination for determining whether or not the boiling operation of the hot water storage hot water supply apparatus using power from the photovoltaic power generation apparatus in the daytime zone excluding the nighttime zone on the next day is based on the predicted power value. Means,
When the daytime boiling determination means determines that the boiling operation in the daytime zone is possible, the daytime zone at a predetermined second timing after the first timing and before the end time of the nighttime zone. And a display control means for controlling the display means so as to perform a day-warming notice display corresponding to the execution of the boiling operation in the solar power generation apparatus-linked hot water supply system. An apparatus power consumption prediction means for determining an apparatus power consumption predicted value consumed by the hot water storage type hot water supply apparatus on the next day,
The surplus power prediction means includes
The surplus power prediction value for the next day is determined using the predicted power generation value of the photovoltaic power generation device on the next day and the load power consumption prediction value consumed by the electric load excluding the hot water storage hot water supply device. ,
The daytime boiling judgment means
2. The photovoltaic power generation according to claim 1, wherein whether or not the boiling operation is possible is determined based on the surplus power prediction value and the device power consumption prediction value determined by the device power consumption prediction unit. Equipment-linked hot water storage system. It further has weather information acquisition means for acquiring weather information,
The surplus power prediction means includes
The predicted surplus power on the next day is determined using the predicted power generation value based on the weather information acquired by the weather information acquisition means and the predicted load power consumption value. Item 3. The solar power generation device-linked hot water storage system according to Item 2. The display control means includes
4. The display unit is controlled so as to extinguish the day-boiling warning display when the boiling operation of the hot-water storage hot-water supply apparatus is completed in the daytime zone. 5. The hot water storage system linked to the described solar power generator. The display control means includes
The display means is controlled so that the day-boiling warning display is not performed when the day-time boiling judgment means judges that the boiling operation in the daytime zone is impossible. The solar power generation device cooperation hot water storage hot water supply system according to any one of 1 to 4. The display control means includes
When it is determined by the daytime boiling determination means that the boiling operation in the daytime zone is possible, in addition to the daytime boiling warning display, the boiling operation start of the hot water storage hot water supply device in the daytime zone is started. The solar power generation apparatus-linked hot water storage system according to any one of claims 1 to 5, wherein the display means is controlled to further display the time. The display control means includes
When it is determined by the daytime boiling determination means that the boiling operation in the daytime zone is possible, the boiling operation starts when the boiling operation of the hot water storage hot water supply device in the daytime zone is started. The solar power generation apparatus linked hot water storage system according to claim 6, wherein the display means is controlled so that the display of time is extinguished. The display control means includes
The solar power generation apparatus-linked hot water supply system according to any one of claims 1 to 6, wherein the display means is controlled to display the amount of the hot water in the hot water storage tank. The solar power generation device according to any one of claims 1 to 8, further comprising remote operation means capable of instructing execution of a predetermined amount of the boiling operation in the hot water storage type hot water supply device by a manual operation. Cooperation hot water storage system. The solar power generation apparatus linked hot water storage system according to claim 9, wherein the display means is provided in the remote control means. A hot water storage tank for storing hot water, a heating means for heating the hot water, and a display means for performing desired display are provided, and the heating means heats the hot water in the hot water storage tank in cooperation with a solar power generation device. In the hot water storage device cooperation hot water storage device that performs boiling operation,
Daytime boiling determination means for determining whether or not the boiling operation of the hot water storage type hot water supply apparatus using electric power from the solar power generation device in the daytime zone excluding the nighttime zone of the next day of the desired date,
When it is determined by the daytime boiling determination means that the boiling operation in the daytime zone is possible, the time when the determination is performed is a first timing, and after the first timing and until the end time of the nighttime zone And a display control means for controlling the display means so as to perform a pre-warning display corresponding to the execution of the hoisting operation in the daytime at a predetermined second timing. Photovoltaic generator linked hot water storage system.

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