Solid state thermal engine

Details Solid state thermal engine Solid state thermal engine

1979-03-12

1981-01-27

Ostrager, Allen M.

Power plants

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

Mass is a solid

F03G 706

Patent

active

042467543

ABSTRACT:
An improved solid state thermal engine utilizes as a drive member a braided belt fabricated from a memory alloy such as nickel-titanium and nickel-titanium ternary alloys, copper-zinc and copper-zinc ternary alloys, and the like. The braided belt is mounted on a set of pulleys to provide passage through a hot zone where the belt contracts and develops tension, and through a cold zone where it relaxes and stretches. Since more energy is delivered by contraction than is required for relaxation, positive work output results with an efficiency of between one-fifth and one-third of the Carnot cycle.

REFERENCES:
patent: 2329131 (1943-09-01), Ottmar
patent: 4075846 (1978-02-01), Li
patent: 4150544 (1979-04-01), Pachter

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