Power plants – Motor operated by expansion and/or contraction of a unit of... – Mass is a liquid
Patent
1975-11-10
1977-07-19
Ostrager, Allen M.
Power plants
Motor operated by expansion and/or contraction of a unit of...
Mass is a liquid
60641, F03G 704
Patent
active
040360199
ABSTRACT:
The solar-differential temperature motor consists of a relatively warm evaporator chamber inside a transparent enclosure which is designed to absorb and trap solar energy. The evaporator chamber is paired with a relatively cold condensor chamber shielded from direct solar radiation by non-transparent barriers. The cold chamber is cooled by evaporation of water from its surfaces or by immersion in a relatively cold body of water. Insides of warm and cold chambers are sealed from the outside environment and contain a low boiling point fluid. By closing and opening of a communication between the vapor phases of the chambers cyclic difference in vapor pressures between the chambers is obtained. Pressure differences are translated into motion by means of a movable part of the chambers which responds to changes in pressures in the chambers. A predetermined resistance of the moving part and synchronization of moving part with the opening and closing of communication between the vapor phases provides a cyclic movement of the moving part. By means of proper linkage the movement is translated into useful work. Pump or gravity means are provided for the return of condensed liquid from cold to warm chamber. In one form of the invention the liquid phase of the warm chamber is separated from the vapor phase of the warm chamber during opening of communication between vapor phases of warm and cold chambers.
REFERENCES:
patent: 2907318 (1959-10-01), Awot
patent: 3778021 (1973-12-01), Alexander et al.
patent: 3842593 (1974-10-01), Bronicki et al.
patent: 3846984 (1974-11-01), Siegel
patent: 3910490 (1975-10-01), Saypalia
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