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US 4,249,384 AGranted
Isothermal compression-regenerative method for operating vapor cycle heat engine
OwnerMarion K. Harrisinventor
Life of this patent
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Abstract
A method of operation of a vapor cycle heat engine which includes the steps of regeneration, recompression, reheating and isothermal recompression with feedwater spray injection for improved cycle efficiency.
Claims11
A method of operating a vapor cycle heat engine comprising the steps of:
- (a) pumping a working substance into a boiler to raise the pressure of the substance to a predetermined value;
- (b) heating the working substance in the boiler;
- (c) expanding the working substance in a cylinder for driving a load;
- (d) exhausting the working substance;
- (e) recompressing the exhausted working substance in an isothermal recompression cylinder to a pressure below said predetermined value;
- and
- (f) injecting a spray of recondensed working substance into the isothermal recompression cylinder for controlling temperature and for providing isothermal compression.
4 more elements
A method for operating a vapor cycle heat engine comprising the steps of:
- (a) pumping a working substance having a first pressure-volume-temperature state to convert said working substance to a second-pressure-temperature state;
- (b) heating the working substance to convert it to a vaporized third pressure-volume-temperature state;
- (c) expanding the working substance from the third pressure-volume-temperature state during which expansion external work is realized and the pressure and temperature of the working substance are decreased;
- (d) exhausting the working substance to a fifth pressure-volume-temperature state;
- (e) recompressing the working substance while injecting a spray of a portion of condensed working substance for intermixing with the vaporized working substance to produce a sixth pressure-volume-temperature state with isothermal compression at which the pressure is less than the pressure at said second state;
- (f) exhausting the working substance and reheating it to a seventh pressure-volume-temperature state;
- and
- (g) expanding the working substance from the seventh pressure-volume-temperature state to an eighth pressure-volume-temperature state during which expansion external work is realized and the pressure and temperature of the working substance decreased.
5 more elements
Dependencies are inferred from the claim text.