Freeze protection device in heat pump system

Details Freeze protection device in heat pump system Freeze protection device in heat pump system

1974-06-12

1979-10-23

Wayner, William E.

Refrigeration

Automatic control

Selective heating or cooling

62201, 62180, 237 2B, F25B 1300

Patent

active

041716213

ABSTRACT:
A water source heat pump system having a plurality of zone air conditioning units, each unit adapted for selectively heating or cooling a zone independent of other units, each air conditioning unit having an air conditioner coil, a heat exchanger of the type having a water contact coil disposed within a housing, a refrigerant compressor, and refrigerant control means operable to selectively cause the air conditioner coil to act as a refrigerant evaporator or condenser and the water contact coil heat exchanger to act as a refrigerant condenser or evaporator, the water contact coil heat exchanger utilizing thermostat control means to control the operation of the air conditioning unit so as to prevent freezing of water in the water contact coil heat exchanger.

REFERENCES:
patent: 2128794 (1938-08-01), Billings
patent: 2496466 (1950-02-01), Graham
patent: 2594502 (1952-04-01), Sahs
patent: 2715514 (1955-08-01), Stair
patent: 3165148 (1965-01-01), Soule
patent: 3271969 (1966-09-01), Lorentzen
patent: 3523575 (1970-08-01), Olivieri
patent: 3630271 (1971-12-01), Brody
patent: 3734402 (1973-05-01), Morgan

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