Countercurrent direct contact heat exchange process and system

Details Countercurrent direct contact heat exchange process and system Countercurrent direct contact heat exchange process and system

1978-01-30

1979-09-11

Ostrager, Allen M.

Power plants

Utilizing natural heat

Geothermal

F03G 700

Patent

active

041670990

ABSTRACT:
Recovery of energy from geothermal brines and other hot water sources by direct contact heat exchange with a working fluid, such as a hydrocarbon working fluid, e.g. isobutane. The process and system consists of a plurality of stages, each stage including mixing and settling units. In the first stage, hot brine and arm working fluid are intimately mixed and passed into a settler wherein the brine settles to the bottom of the settler and the hot working fluid rises to the top. The hot working fluid is passed to a heat engine or turbine to produce work and the working fluid is then recycled back into the system. The system is comprised of a series of stages each containing a settler and mixer, and wherein the working fluid and the brine flow in a countercurrent manner through the stages to recover the heat from the brine in increments and raise the temperature of the working fluid in increments.

REFERENCES:
patent: 3972193 (1976-08-01), Sherwood
patent: 4063419 (1977-12-01), Garrett
patent: 4120158 (1978-10-01), Sheinbaum

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