Heat pump system

Details Heat pump system Heat pump system

1983-01-05

1985-02-12

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

236 92B, F25B 4100

Patent

active

044983107

ABSTRACT:
A heat pump system in which the amount of opening of an expansion valve is set to an optimum value in dependence upon the inlet temperature of water undergoing heat exchange at a utilization side heat exchanger and an inlet temperature of air undergoing heat exchange at a non-utilization side heat exchanger. In response to the sensed temperature values, a controller determines the optimum amount of valve opening so as to provide a maximum system capacity and efficiency. The controller may be implemented with a microprocessor and a read-only memory. In the read-only memory are stored data values representing optimum opening settings of the expansion valve corresponding to various values of the sensed inlet temperature of water at the utilization side heat exchanger and the inlet temperature of the air at the non-utilization side heat exchanger.

REFERENCES:
patent: 4032070 (1977-06-01), Nielsen
patent: 4095742 (1978-06-01), Schumacher
patent: 4244182 (1981-01-01), Behr
patent: 4283921 (1981-08-01), Prosky

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