Apparatus for recovery and use of waste thermal energy

Details Apparatus for recovery and use of waste thermal energy Apparatus for recovery and use of waste thermal energy

1992-12-23

1994-01-18

Lazarus, Ira S.

Power plants

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

Mass is a solid

60531, F03G 700

Patent

active

052791238

ABSTRACT:
Energy recovery apparatus for recovering and using thermal energy comprises multiple series of shape memory elements having decreasing transformation temperatures from one element to the next in the direction of a heating fluid to extract heat over a range of fluid temperatures to effect a shape change of each element. Cooling fluid is flowed alternately through each series of elements to cool the elements and effect another shape change. The cooling fluid exiting a preceding series of elements is used as the heating fluid of the next series of elements to extract further heat indirectly from the original heating fluid. The shape changes of the elements are converted to mechanical work.

REFERENCES:
patent: 3913326 (1975-10-01), Banks
patent: 3937019 (1976-02-01), Renner
patent: 4041706 (1977-08-01), White
patent: 4086769 (1978-05-01), Smith
patent: 4393654 (1983-07-01), Pelly

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