Dual economizer heat exchangers for heat pump

Details Dual economizer heat exchangers for heat pump Dual economizer heat exchangers for heat pump

2006-02-21

2006-02-21

Jones, Melvin (Department: 3744)

Refrigeration

Reversible, i.e., heat pump

C062S113000, C062S513000

Reexamination Certificate

active

07000423

ABSTRACT:
A refrigerant system is operable in either a heating mode or cooling mode. The system is also provided with an economizer cycle that will function in either heating mode or cooling mode. A pair of economizer heat exchangers are positioned adjacent to an air conditioning economizer expansion device, and a heat pump economizer expansion device, respectively. A control for the system will control the opening either the air conditioning economizer expansion device or the heat pump economizer expansion device, dependent on whether economized operation is desired, and whether the system is in cooling or heating mode. Thus, a pair of heat exchangers are utilized, with one being selected for economizer operation dependent on whether the system is in cooling or heating mode.

REFERENCES:
patent: 4876859 (1989-10-01), Kitamoto
patent: 5095712 (1992-03-01), Narreau
patent: 5174123 (1992-12-01), Erickson
patent: 5875637 (1999-03-01), Paetow
patent: 6047556 (2000-04-01), Lifson
patent: 6206652 (2001-03-01), Caillat
Systems & Advanced Technologies Engineering S.r.I., publication entitled “Compsys—Dynamic Simulation of Gas Compression Plants”, dated Jun. 12, 2002.
Copeland Europe publication entitled “Refrigeration Scroll for Parallel Applications” dated Feb. 26, 2002.

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