Power plants – Utilizing natural heat – Geothermal
Patent
1975-01-02
1976-05-04
Ostrager, Allen M.
Power plants
Utilizing natural heat
Geothermal
60398, 60651, 60671, 60675, 62119, 62260, 165 45, F03G 704
Patent
active
039539717
ABSTRACT:
This invention relates to a system for generating power utilizing the elevation differences and available temperatures on the earth's surface, such as occurs in a mountainous region with a nearby valley or desert. The system includes heat rejection means, as for example, a condenser located at a higher elevation (a mountain top). Means for supplying heat to the system may be provided at a lower elevation (in a valley or desert region below). A geothermal source of heat, such as a hot spring, may be used. Power generation means are also provided in the valley and operatively communicated with the condenser on the mountain top and the heat supply means in the valley. Liquid flowing from the condenser to the power generation means at a relatively high pressure will drive the power generation means to create electrical energy and the liquid will be expanded, vaporized and cooled. The cooled vapor will absorb heat from the heat supply means and then be returned to the condenser on the mountain top. It may be desirable to have the relatively high pressure liquid pass through the power generation means in a liquid stage. The liquid will then be boiled off into a vapor at the heat supply means. This vapor then will be returned to the condenser on the mountain top.
In some instances it may be desirable to add heat or work to the vapor in order to assist the return of same to the mountain top.
Another aspect of this invention is to take advantage of a source of cold at the relatively cool mountain top and a source of warmth in the relatively hot valley or desert. Additional power may be derived with a compound cycle where there is heat exchange between the ambient or other sources of cold and warmth at the mountain top and in the valley or desert below.
REFERENCES:
patent: 196759 (1877-11-01), Miller
patent: 1493368 (1924-05-01), Merz
Ostrager Allen M.
Rothstein Seymour
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