Hydraulic and earth engineering – Fluid control – treatment – or containment – Fluid storage in earthen cavity
Patent
1987-05-21
1989-02-28
Corbin, David H.
Hydraulic and earth engineering
Fluid control, treatment, or containment
Fluid storage in earthen cavity
60398, B65G 500
Patent
active
048080292
ABSTRACT:
A system for subterranean storage of energy comprises a lower and a higher cavern formed in a subterranean salt formation, both caverns being partially filled with salt solution, a gas supply for pressurizing a head space in each cavern, a first channel interconnecting the liquid filled portions of the caverns, a second channel interconnecting the pressurized head spaces, and a pumping-generating plant at the ground surface connected between two vertical branches of the first channel. The plant is operable for pumping liquid through the first channel from the lower to the higher cavern when supplied with energy, or for generating energy when driven by liquid flowing through the first channel from the higher to the lower cavern. The gas supply maintains a pressure equal or greater to the hydrostatic pressure differential between the liquid filled spaces in the caverns and also sufficient for driving the liquid from the lower cavern to the ground surface.
REFERENCES:
patent: 3996741 (1976-12-01), Herberg
patent: 4261419 (1981-04-01), Probstein
patent: 4538414 (1985-09-01), Saleh
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