Power plants – Utilizing natural heat – Geothermal
Patent
1984-07-20
1985-09-24
Husar, Stephen F.
Power plants
Utilizing natural heat
Geothermal
60655, F03G 704
Patent
active
045426252
ABSTRACT:
A geothermal power plant for operating on geothermal fluid includes an open cycle power plant responsive to the geothermal fluid for producing power and producing heat depleted geothermal fluid. Associated with the open cycle power plant is a closed Rankine cycle organic fluid power plant for producing power. Heat from the geothermal fluid is transferred to the closed cycle power plant; and heat depleted geothermal fluid is injected into a rejection well. The open cycle power plant includes a condenser that operates at a pressure greater than or equal to about atmospheric pressure with the result that the condenser is directly vented to the rejection well. Uncondensible gases contained in the geothermal fluid are thus passed directly into the rejection well making the power plant environmentally acceptable. The operation of the condenser at a pressure greater to or equal to atmospheric pressure eliminates the need for a vacuum pump and thus increases the useful work produced by the hybrid power plant so constructed, and simplifies its design and operation. The same approach is applicable to elimination of noncondensible gases in steam produced in industrial processes rather than from a geothermal well.
REFERENCES:
patent: 3266246 (1966-08-01), Heller et al.
patent: 3995428 (1976-12-01), Roberts
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