Thermodynamic process and latent heat engine

Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation

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60673, 60674, F02C 104

Patent

active

041062949

ABSTRACT:
The invention involves thermodynamic processes, heat engines, and ways of making gaseous fluid jets by using primarily the latent heat of condensation for the energy required. A vapor such as water vapor is mixed with a gaseous fluid such as air, and the mixture is expanded in a nozzle sufficiently to condense a substantial portion of the vapor and transform the latent heat of the condensation into kinetic energy of the gaseous fluid. The process can be used to form a gaseous fluid jet, which can be used to drive the turbine of a heat engine for either open-cycle or closed-cycle operation. Moist ambient wind can be used as the energy source for producing a jet that drives a wind turbine, or a boiler can be used to form saturated vapor mixed with the gaseous fluid and directed into the nozzle. For closed-cycle systems, the gaseous fluid exhausted from the turbine and the liquid from the condensation of the vapor are both recompressed, the liquid is revaporized, and the vapor and compressed gaseous fluid are recombined. The process is efficient enough so that electric energy from the turbine output can be used to heat a liquid supply for storing energy that is later reconverted to electricity, and operating pressures and temperatures are low enough so that a wide variety of energy sources become usable, including many that are impractical with present heat engines.

REFERENCES:
patent: 2151949 (1939-03-01), Turner
patent: 2852239 (1958-09-01), Vicard
patent: 2983332 (1961-05-01), Vicard
patent: 3358451 (1967-12-01), Feldman et al.
patent: 3681009 (1972-08-01), Horsley
patent: 3972195 (1976-08-01), Hays

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