Heating systems – Automatic control – Heat source is a reverse cycle refrigerating system or heat...
Patent
1989-02-15
1990-07-24
Wayner, William E.
Heating systems
Automatic control
Heat source is a reverse cycle refrigerating system or heat...
165 111, 236 94, 364156, G05B 1302
Patent
active
049430033
ABSTRACT:
A control device for a heat pump system having a hot-water supply facility is disclosed which comprises an input device for inputting the cost of electricity for operating a heat pump and for inputting the cost of fuel for operating a boiler. A first sensor detects the temperature of the ambient air. A second sensor detects the moisture of the ambient air. A third sensor detects the temperature of the hot-water supply. An operation circuit selects an operation mode on the basis of the output signals received from the sensors. A comparison circuit selects the cheaper energy form based on cost data inputted from the input device in the heating air mode and in the hot-water supply mode. A control circuit selectively operates the heat pump or the boiler based on the result of the comparison performed by the comparison circuit.
REFERENCES:
patent: 4716957 (1988-01-01), Thompson et al.
Kojima Hideo
Maehara Kazuo
Shimizu Mitsuo
Shinohara Hidenobu
Sanden Corporation
Wayner William E.
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