Power plants – Utilizing natural heat – With natural temperature differential
Patent
1987-01-12
1987-11-03
Ostrager, Allen M.
Power plants
Utilizing natural heat
With natural temperature differential
F03G 704
Patent
active
047036265
ABSTRACT:
An apparatus is disclosed to generate electricity using ocean thermal and salinity gradients. An elongated chamber extends vertically downward from the surface of the ocean. Warm, high-salinity water from the ocean surface flowing by gravity down the apparatus is used to drive a turbine and electrical generator. Air bubbles are introduced into the flow at the upper opening of the apparatus. This air is subject to hydraulic compression as the water falls. The flow of sea water and air passes through a cooling tube near the bottom of the apparatus where it is cooled to the temperature of ambient sea water at that depth. The flow then enters a chamber where the air and water are allowed to separate. Because of its greater density than the ambient sea water at that depth, the water in the chamber tends to flow out exhaust ports located at the bottom of the chamber. Excess air pressure held in the chamber can either be used to operate a booster pump to increase the flow through the turbine, or to assist in exhausting water from the separation chamber.
REFERENCES:
patent: 2006985 (1934-06-01), Claude
patent: 4278405 (1981-07-01), Angle
patent: 4311012 (1982-01-01), Finley
patent: 4355513 (1982-10-01), Girden
patent: 4597360 (1986-07-01), Johnson
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