Variable capacity staged cooling direct expansion geothermal hea

Details Variable capacity staged cooling direct expansion geothermal hea Variable capacity staged cooling direct expansion geothermal hea

1994-05-09

1996-10-15

Tanner, Harry B.

Refrigeration

Automatic control

Selective heating or cooling

62199, 622387, 623244, 62260, 621964, F25B 1300

Patent

active

055642829

ABSTRACT:
A "DX" heat pump is provided herein which is based on the principle of providing optimal heat exchange in the heating mode through at least two, but up to five or more parallel ground loops, all but one of which respectively can be cut off from the system and evacuated of refrigerant in the cooling mode, and selectively reintroduced as required in the cooling mode. The loops are designed in terms of volume so that the refrigerant charge is correct in the heating mode when split in the selected number of loops and also correct in the cooling mode when one or more loops are used, whereby it/they contain the full system refrigerant charge. The headers are provided with solenoid valves which can be individually operated to provide a staged cooling system.

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