Closed loop direct expansion heating and cooling system with...

Details Closed loop direct expansion heating and cooling system with... Closed loop direct expansion heating and cooling system with...

2005-08-23

2005-08-23

Jones, Melvin (Department: 3744)

Refrigeration

Structural installation

Geographic, e.g., subterranean feature

C062S324100, C165S045000

Reexamination Certificate

active

06931879

ABSTRACT:
A direct expansion refrigerant-based heating and cooling system which includes a refrigerant pumping devise calibrated to ease or eliminate the pumping requirements placed upon the system's compressor unit when one or both of significant system height differentials between the compressor unit and the condensing unit are present and significant system refrigerant fluid transport line distances are present, or are desirable, such as in a deep well direct expansion system application.

REFERENCES:
patent: 4325228 (1982-04-01), Wolf
patent: 4383419 (1983-05-01), Bottum
patent: 4448238 (1984-05-01), Singleton et al.
patent: 4993483 (1991-02-01), Harris
patent: 5313804 (1994-05-01), Kaye
patent: 5383337 (1995-01-01), Baker
patent: 5461876 (1995-10-01), Dressler
patent: 5623986 (1997-04-01), Wiggs
patent: 5671608 (1997-09-01), Wiggs et al.
patent: 5758514 (1998-06-01), Genung et al.
patent: 5816314 (1998-10-01), Wiggs et al.
patent: 5946928 (1999-09-01), Wiggs

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