Heating and air conditioning device using geothermal heat exchan

Details Heating and air conditioning device using geothermal heat exchan Heating and air conditioning device using geothermal heat exchan

1997-05-02

1998-12-29

Sollecito, John M.

Refrigeration

Structural installation

Geographic, e.g., subterranean feature

623246, F25B 1300

Patent

active

058529390

ABSTRACT:
A heat pump heating and cooling system uses heat exchange coils which are located vertically in the ground. A double evaporator is used as a condenser in the heating cycle, and a single evaporator is used in the cooling cycle. The device sub-cools the liquid refrigerant during the cooling cycle, and super heats the refrigerant in the heating cycle, increasing the efficiency over prior art heat pump systems. No receiver for excess refrigerant is required, and problems associated with liquid refrigerant settling in the vertical ground coils are eliminated.

REFERENCES:
patent: 4765149 (1988-08-01), Shiga et al.
patent: 4920757 (1990-05-01), Gazes

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