Refrigeration – Processes – Compressing – condensing and evaporating
Patent
1983-01-10
1984-05-29
Capossela, Ronald C.
Refrigeration
Processes
Compressing, condensing and evaporating
62333, 62335, 62467, F25B 100
Patent
active
044506902
ABSTRACT:
Method and apparatus for transferring heat. A pair of closed loop heat transfer loops each includes a refrigerant, a condenser to remove heat from the refrigerant, and an evaporator which adds heat to the refrigerant from its associated heat source. Each loop also includes a chamber of a compressor which has a free piston common to both chambers. One of the chambers is located above the other so that in one of the two cycles of operation, thermal energy from a heat source of the loop including the upper chamber evaporates liquified refrigerant collected in a collector of the loop in the previous cycle of operation which vapor together with gravity acting on the free piston cause the piston to compress vaporized refrigerant of the other loop in the lower chamber. This compressed refrigerant is condensed by loss of heat to an associated heat sink and is collected in the collector of its loop. In the second cycle, liquified refrigerant in the collector of the loop including the lower chamber is vaporized in its evaporator by absorbing heat from its associated heat source. The vaporized refrigerant acts on the free piston to cause it to compress vaporized refrigerant in the upper chamber which refrigerant is condensed in its loop condenser and collected in its collector. Controls are provided to initiate the next cycle of operation at the completion of the preceding cycle.
REFERENCES:
patent: 3577880 (1971-05-01), Leslie
patent: 3699779 (1972-10-01), Schlichtig
patent: 3823573 (1974-07-01), Cassady
patent: 4281969 (1981-08-01), Doub, Jr.
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