Refrigeration – Processes – Exchanging heat between plural systems – e.g. – disparate
Patent
1982-01-15
1983-07-05
Wayner, William E.
Refrigeration
Processes
Exchanging heat between plural systems, e.g., disparate
622386, 62335, F25B 2702, F25B 700
Patent
active
043911048
ABSTRACT:
A heat pump system and method, wherein the system may be operated in cascade fashion to heat water using heat extracted from relatively cold outdoor ambient air, or in non-cascade fashion to provide supplemental heating or cooling in a comfort zone. The system uses a first and a second refrigerant fluid with separate compression cycle loops passing in heat transfer relationship through a tri-fluid heat exchanger. In a first mode of operation, the first refrigerant fluid condensed while heating water is vaporized in the tri-fluid heat exchanger to cool air supplied to the comfort zone, and in a second mode the first refrigerant fluid is vaporized by heat rejected from condensing the second refrigerant fluid. In a third mode, wherein only the second refrigerant loop is operative, air passing through the tri-fluid heat exchanger to the comfort zone is heated by condensation of the compressed second refrigerant fluid.
REFERENCES:
patent: 2204394 (1940-06-01), Bailey
patent: 3301002 (1967-01-01), McGrath
patent: 3984050 (1976-10-01), Gustafsson
patent: 4149389 (1979-04-01), Hayes et al.
patent: 4325226 (1982-04-01), Schaeffer
Anderson Ronald M.
Campbell Raymond W.
Lewis Carl M.
The Trane Company
Wayner William E.
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