Working fluid for rankine cycle power plant

Details Working fluid for rankine cycle power plant Working fluid for rankine cycle power plant

1986-01-08

1989-10-31

Ostrager, Allen M.

Power plants

Motive fluid energized by externally applied heat

Process of power production or system operation

60671, F01K 2506, F01K 2508

Patent

active

048768553

ABSTRACT:
A composite working fluid for a Rankine cycle power plant operating between a boiler temperature and a condenser temperature comprises a mixture of immiscible fluids selected such that the saturated vapor line of the composite fluid in the vicinity of the boiler temperature is generally along a line of substantially constant entropy. As a result, the vapor of the composite working fluid expands from boiler to condenser temperature generally along the saturated vapor line of the composite working fluid. One of the immiscible fluids of the composite working fluid is a "wet" fluid, and one of the immiscible fluids is a "dry" fluid. The "wet" fluid is a polar compound with a molecular weight smaller than the molecular weight of the "dry" fluid, which is a non-polar compound. Preferably, the "wet" fluid is water, and the "dry" fluid is selected from a class comprising hydrocarbons and their halogenated derivatives.

REFERENCES:
patent: 709115 (1902-09-01), Rosenthal
patent: 3282048 (1966-11-01), Murphy et al.
patent: 3841099 (1974-10-01), Somekh
patent: 4084379 (1978-04-01), Schwartzman
patent: 4448025 (1984-05-01), Oda

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