Direct expansion geothermal heat pump

Details Direct expansion geothermal heat pump Direct expansion geothermal heat pump

1993-04-23

1994-05-24

Tanner, Harry B.

Refrigeration

Automatic control

Selective heating or cooling

62260, 622387, 623244, F25B 1300

Patent

active

053138040

ABSTRACT:
A "DX" heat pump is provided herein which is based on the principle of providing optimal heat exchange in the heating mode through three parallel ground loops, two of which can be cut off from the system and evacuated of refrigerant 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 three loops and also correct in the cooling mode when only one loop is used, but it contains the full system refrigerant charge.

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patent: 5038580 (1991-08-01), Hart
patent: 5136855 (1992-08-01), Lenarduzzi

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