WATER HEATER CONTROL SYSTEM AND STORAGE-TYPE ELECTRIC WATER HEATER

The following are provided: a photovoltaic power generator (1) interconnected with a commercial power supply, an electrical load circuit (2) including a storage-type electric water heater (7) using power from the commercial power supply and generated power of the photovoltaic power generator (1), an...

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Bibliographische Detailangaben
Hauptverfasser:	YANAGIMOTO, Kei, KOMATSU, Masayuki, TAKAYAMA, Keisuke, OGAWA, Takashi, OGAWA, Yuki, NOMURA, Satoshi, BARADA, Naoki, INABA, Tadahiko
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DOMESTIC HOT-WATER SUPPLY SYSTEMS DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATINGSYSTEMS ELECTRICITY ELEMENTS OR COMPONENTS THEREFOR FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL GENERATION HEATING LIGHTING MECHANICAL ENGINEERING RANGES SYSTEMS FOR STORING ELECTRIC ENERGY VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	The following are provided: a photovoltaic power generator (1) interconnected with a commercial power supply, an electrical load circuit (2) including a storage-type electric water heater (7) using power from the commercial power supply and generated power of the photovoltaic power generator (1), and a controller (4) limiting a water heating operation of the storage-type electric water heater (7) by stopping or suppressing the water heating operation of the storage-type electric water heater (7) when a power fee data for purchased power supplied to the electrical load circuit (2) from the commercial power supply exceeds a standard monetary amount. When the water heating operation by the storage-type water heater (7) is performed using photovoltaic power, and a purchase of power from the commercial power supply occurs due to a lowering of photovoltaic power because of temporary cloudiness and the like or due to an increase in in-home-use power because of unanticipated use of electric equipment and the like, so that a purchased-power fee is greater than or equal to prescribed value, the controller (4) suppresses or stops the water heating operation of the storage-type electric water heater (7).