Power plants – Utilizing natural heat – Geothermal
Reexamination Certificate
2005-03-08
2005-03-08
Nguyen, Hoang (Department: 3748)
Power plants
Utilizing natural heat
Geothermal
C060S641100
Reexamination Certificate
active
06862886
ABSTRACT:
Applicant's preferred embodiment utilizes municipal wastewater effluent to replenish a depleted geothermal field. Condensate produced by expanding steam produced in the geothermal field through a steam turbine-generator may be pooled with cooked water collected from said field, and then directed through a penstock from a higher elevation to a lower elevation where further energy is extracted through a traditional hydroelectric turbine-generator. The cooked water and condensate may be treated to produce potable water and/or distributed for public consumption either before or after being directed to the hydroelectric turbine-generator. The effluent is pumped up to the geothermal field during off-peak periods of electric consumption, and the hydroelectric generation is accomplished during periods of peak electric demand. A fraction of the effluent may be used as cooling water for the steam turbine-generator and its associated condenser before injection into the geothermal field. At least a portion of the pipeline to transport the wastewater effluent is preferably routed along an undisturbed riverbed and/or through an excavated tunnel.
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Milks, III William C.
Russo & Hale LLP
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