Closed-cycle heat-engine

Details Closed-cycle heat-engine Closed-cycle heat-engine

1982-07-12

1984-04-17

Ostrager, Allen M.

Power plants

Motor operated by expansion and/or contraction of a unit of...

Unit of mass is a gas which is heated or cooled in one of a...

60508, 60516, F02G 104

Patent

active

044426704

ABSTRACT:
A closed-cycle heat engine consists of a gas-filled heat-insulated cylinder and a reciprocating piston. The cylinder space between the cylinder head and the piston face contains a spiral in the shape of flat interconnected discs, whereof the outermost disc at each end is heat-conductively attached to the cylinder head and the piston face respectively. About 10% of the discs at both ends of the spiral are of high heat-conductive material and about 80% of the discs inbetween are of a low heat-conductive sheet material. The cylinder head is permanently heated to a high temperature, and the piston is permanently cooled to a low temperature; the gas in the cylinder is alternately cooled and heated by the shifting movement of the discs, which are alternately closely packed adjacent the piston at the end of the compression stroke, and adjacent the cylinder head at the end of the expansion stroke. This shifting between the end positions is performed by an alternately directed gas stream.

REFERENCES:
patent: 4270351 (1981-06-01), Kuhns
patent: 4356697 (1982-11-01), White

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