Closed loop air-cycle heating and cooling system

Details Closed loop air-cycle heating and cooling system Closed loop air-cycle heating and cooling system

1993-12-30

1995-10-31

Ford, John K.

Heat exchange

Structural installation

Heating and cooling

62277, 62325, 62402, 62513, 62401, F25B 2900, F25D 900

Patent

active

054621100

ABSTRACT:
A closed air cycle system for heating and cooling the interior of a structure is provided. The air cycle system includes a compressor to compress and to heat the air. A louver is provided which is movable between a first heating position wherein a heat exchange is effected between the compressed air and a radiator system, and a second cooling position wherein a heat exchange is effected between the compressed air and the air outside the structure. After the initial heat exchange, a second heat exchanger intakes the compressed air. The second heat exchanger is also coupled to the input end of the compressor to provide air to the compressor. The second heat exchanger effects a heat exchange between the compressed air and the air provided to the compressor. After exiting the second heat exchanger, the compressed air rotates a turbine so as to generate power to partially power the compressor. As a result of driving the turbine, the air is decompressed. The air is provided to a third heat exchanger which includes a second louver. The second louver is movable between a first heating position wherein the third heat exchanger effects the heat exchange between the decompressed air and the air outside of the structure, and a second cooling position wherein the third heat exchanger effects the heat exchange between the compressed air and the interior of the structure. The decompressed air flows into a third heat exchanger to provide the air for the compressor and the cycle is repeated.

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Ashrae Handbook, 1984 Systems, p. 10.7 Applied Heat Pump Systems, Copyright 1984.
"Air Cycle Heat Pumps" by Robin MacKay dated Apr. 22, 1993, NoMac Energy Systems, 655 Deep Valley Drive, Suite 205, Rolling Hills Estates, Calif. 90274.

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