Importance

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Abstract

The electricity storage and recovery system. At first, injects high-pressure gas in a high-pressure tank and then, the normal-pressure fluid from a normal-pressure tank is pumped into the high-pressure tank by a motor-driven pump so that the electrical energy is converted to high-pressure potential energy of the fluid stored inside the high-pressure tank. To recover the potential energy back to electrical energy, the high-pressure fluid flows from the bottom of the high-pressure tank to the normal-pressure tank through a turbine. The turbine in turn drives a generator to produce electricity. The pump and the turbine are of a same device running in opposite directions. The motor and the generator are also of a same device running in opposite directions.

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First Claim