Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation
Patent
1977-02-02
1979-01-02
Ostrager, Allen M.
Power plants
Motive fluid energized by externally applied heat
Process of power production or system operation
60673, 60674, F01K 2506
Patent
active
041320778
ABSTRACT:
Process and apparatus are disclosed in which a very cold gas, e.g. air, is injected into an upflowing stream of water to aerate and help lift the liquid at accelerated velocity. The gas-liquid mixture is discharged at high velocity into a separating zone converting dynamic energy into pressure energy; gas flows out to drive an expansion engine while the liquid next flows to a deep storage zone, entrapping gas as it descends at considerable velocity. The expanding gas is cooled by expansion and returned to the first stage. Meanwhile, the entrapped downflowing gas is allowed to collect above the liquid in deep storage under pressure, from whence it can be released for expansion, as in an engine, with further cooling to lower still further the temperature of the gas going to the first step. In a modification, a very cold gas, such as liquid nitrogen, may be used in the first step, means being provided for obtaining work and reliquefying the latter gas. The system can be used to lift water at moderate temperature to considerable distances above underground aquifers.
REFERENCES:
patent: 1162052 (1915-11-01), Hall
patent: 3190072 (1965-06-01), Berryer
patent: 3908382 (1975-09-01), Stone, Jr.
patent: 4041710 (1977-08-01), Kraus
Ostrager Allen M.
Thomas Edwin M.
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