Importance

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Abstract

A working fluid in the gaseous state at some initial temperature and pressure is expanded polytropically to a resulting exhaust fluid (vapor and liquid) having some lower pressure at some lower temperature in order to produce useful work. The exhaust fluid is then, in a manner approaching constant enthalpy, compressed to the working fluid's nominal original high pressure. Thereafter, the fluid undergoes constant pressure heating to restore its initial state. Of the several methods described for achieving isenthalpic compression, the preferred method uses an isenthalpic compression apparatus which educts the exhaust fluid vapors into a throat located between a motive fluid inlet nozzle and a wider recompression outlet. After eduction, and entrainment into the motive fluid, the exhaust vapors are recompressed by the deceleration produced at the recompression outlet. Thereafter the working fluid and motive fluid are separated. The motive fluid at elevated pressure consists of liquid in quantities sufficient to accomplish gas recompression with surplus quantities being returned to reservoir storage.

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First Claim