Freeze protection device in heat pump system
The invention discloses 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.
- Assignee:
- American Air Filter Co., Inc.
- Patent Number(s):
- US 4171621
- OSTI ID:
- 5713552
- Resource Relation:
- Patent File Date: Filed date 12 Jun 1974
- Country of Publication:
- United States
- Language:
- English
Similar Records
Controls for room air conditioner with timer and power saver
Heat pump using solar and outdoor air heat sources