Producing power from a cryogenic liquid

Details Producing power from a cryogenic liquid Producing power from a cryogenic liquid

1981-06-19

1983-08-30

Ostrager, Allen M.

Power plants

Motive fluid energized by externally applied heat

Process of power production or system operation

60655, 60690, 60693, 60671, F01K 2304, F01K 2506, F01K 900

Patent

active

044009470

ABSTRACT:
Power is produced from a methane-containing cryogenic liquid such as LNG by compressing the liquid and employing the compressed liquid as a refrigerant in the condensers of two closed and independent power cycles. The heat exchange medium in the first of the cycles evaporates in a lower temperature range than that at which the heat exchange medium in the second cycle condenses. The first heat exchange medium is condensed by heat exchange in a first heat exchange step with the compressed cryogenic liquid and the second heat exchange medium is condensed by heat exchange in a second heat exchange step with compressed cryogenic liquid recovered from the first heat exchange step and evaporating first heat exchange medium. Power is recovered from the expansion engines associated with the two power cycles.

REFERENCES:
patent: 3257806 (1966-06-01), Stahl
patent: 3266246 (1966-08-01), Heller et al.
patent: 3892103 (1975-07-01), Antonelli
patent: 4231226 (1980-11-01), Griepentrog

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