Solar augmented heat pump system with automatic staging reciproc

Details Solar augmented heat pump system with automatic staging reciproc Solar augmented heat pump system with automatic staging reciproc

1977-06-14

1979-04-10

Croyle, Carlton R.

Heating systems

Automatic control

Heat source is a reverse cycle refrigerating system or heat...

62160, 62238, 62510, 62324, G05D 2300, F25B 2702, F25B 110

Patent

active

041484363

ABSTRACT:
A multi-cylinder reciprocating compressor is automatically staged at low ambient temperature to improve refrigerant volume flow while facilitating subcooler operation and return of vaporized refrigerant from the subcooler to the inlet of the second stage cylinders of the compressor in the two stage mode. A solar evaporator substitutes for the outdoor coil when the solar heated storage tank temperature exceeds that of ambient. During staging mode, the wrist pins of the low side cylinders and the high side cylinder undergo proper load reversals, since intermediate suction pressure is applied to the wrist pin of the high side cylinders.

REFERENCES:
patent: 2619326 (1952-11-01), McLenegan
patent: 4019679 (1977-04-01), Vogt et al.
patent: 4030312 (1977-06-01), Wallin et al.

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