CALCULATING METHOD FOR HEATING OPERATION TIME IN HEAT PUMP WATER HEATER

PROBLEM TO BE SOLVED: To estimate heating operating time in a heat pump water heater. SOLUTION: After a remaining hot-water amount Lz in a hot-water tank 10 having reached 55 deg.C is calculated by a microcomputer 20, a circulation flow (heating amount per minute) is calculated by dividing a heating...

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Bibliographische Detailangaben
Hauptverfasser:	OKADA TADAO, ENYA YOSHINORI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL HEATING LIGHTING MECHANICAL ENGINEERING RANGES VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To estimate heating operating time in a heat pump water heater. SOLUTION: After a remaining hot-water amount Lz in a hot-water tank 10 having reached 55 deg.C is calculated by a microcomputer 20, a circulation flow (heating amount per minute) is calculated by dividing a heating amount per minute with a heat pump by a temperature obtained by subtracting a water temperature from a heating temperature. Then, based on this circulation flow, an amount obtained by subtracting the remaining hot-water amount from the capacity of the hot-water tank 10 is divided by the circulation flow, and 5 is added to it to calculate the operating time.