Power plants – Utilizing natural heat – Geothermal
Patent
1979-04-02
1981-08-25
Ostrager, Allen M.
Power plants
Utilizing natural heat
Geothermal
60657, 60671, 60676, F03G 702
Patent
active
042852013
ABSTRACT:
An engine assembly that is powered by high pressure vapor from a volatile liquid that has a boiling point substantially below the minimum ambient temperature in the geographical location in which the engine assembly will be used. Heat for volatilizing the liquid may be withdrawn from the ground, naturally occurring sources of water, as well as from sunlight and waste heat from industrial installations. Although the engine assembly is capable of being used to produce power for any desired purpose, it is particularly adapted for use in pumping water from a well, with the pumped water not only being used for irrigation purposes and the like, but also to effect an initial cooling of the low pressure vapor discharged from the engine assembly prior to the vapor being further cooled and pressurized to return to the liquid state whereupon it is heated and recycled through the engine assembly. The volatile liquid may be a suitable one of the various Freons that are commercially available, such as Freon 22, liquid carbon dioxide, ammonia, or the like. Although the engine assembly will preferably operate on naturally occurring heat, it is adapted to operate on heat from a conventional fuel such as Diesel oil, wood, sawdust and the like when the occasion so requires. Water may also be used as a source of vapor providing the source of heat is of sufficient magnitude to convert the water to superheated steam.
REFERENCES:
patent: 4014172 (1977-03-01), Jones
patent: 4033136 (1977-07-01), Stewart
patent: 4156343 (1979-05-01), Stewart
Babcock William C.
Husar Stephen F.
Ostrager Allen M.
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