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...
Patent
1983-03-01
1984-06-26
Husar, Stephen F.
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...
60682, F02G 104
Patent
active
044558252
ABSTRACT:
An improved closed cycle hot gas engine in which virtually the entire working gas mass performs the same Ericsson Cycle loop thereby achieving maximized thermal efficiency. The invention engine embodiments consist of paired cylinders connected together by leak sealed means for controlled working gas operation. The working gas is simultaneously heated and expanded in the heating cylinder and then simultaneously cooled and compressed in the cooling cylinder to achieve the isothermal expansion and compression steps respectively of the four step Ericsson Cycle loop. The improvements consist of means to provide both the reciprocating operation of the cylinders pistons as well as control of piston relative motion with respect to each other. Piston relative motion is such that during the entire simultaneous expansion and heating step virtually all the working gas is contained in the heating cylinder, and, during the entire simultaneous compression and cooling step virtually all the working gas mass is contained in the cooling cylinder. In between these two isothermal steps the gas mass is isobarically transferred between the cylinders by the storage or recovery, respectively, of working gas heat in a state-of-the-art regenerator located serially in the flow path between the heating and cooling cylinders.
REFERENCES:
patent: 1926463 (1933-09-01), Stoddard
patent: 3579980 (1971-05-01), Kelly
patent: 4136523 (1979-01-01), Pronovost
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