Stirling cycle engine

Refrigeration – Gas compression – heat regeneration and expansion – e.g.,...

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F25B 900

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040559602

ABSTRACT:
The hot and cold gases of a Stirling Cycle engine are stored in the opposite ends of a rotating hollow cylinder with the inner surface of the cylinder covered with water held in place by centrifugal force. The hot and cold gases are kept separate by a piston, that moves back and forth in the rotating cylinder, with the outer edge of the piston dipping in the ring of water providing a gas seal.
The gas when heated and introduced into the hot end of the rotating cylinder is given the same angular velocity as the rotating hollow cylinder by means of a large number of small holes in a molybdenum sheet of metal. The molybdenum metal is strong and is not corroded, in the hydrogen gas used as the working fluid, at temperatures as hot as 2200.degree. Fahrenheit or even hotter.
The system is the basis of a low first cost power plant where hydrogen is compressed, expanded through a turbine with the generation of power and then compressed over again. The overall power plant needs less than 7500 BTU per KWH. With the use of Solar heat stored in enormous piles of sand-lime pebbles with cooling water sprayed in winter and stored in holes, from which has been obtained sand which is made into sand-lime mortar for the pebbles, heat rates of as low as 6500 BTU per KWH can be obtained.

REFERENCES:
patent: 3364675 (1968-01-01), Dorer
patent: 3416308 (1968-12-01), Livezey
patent: 3481142 (1969-12-01), Schulze

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