Method for recovering mechanical energy from compressed gas in compressed gas reservoir, involves controlling quasi-isothermal expansion of compressed gas, to produce electrical energy from mechanical work of working machine

摘要

The expansion of compressed gas in expansion chamber (E) is controlled such that the change amount of temperature of gas during mass quasi-isothermal expansion is less than half of that occurs during full-adiabatic expansion. The displacement of liquid (1) due to expanding gas (2), from expansion chamber into working machine (A) e.g. water turbine is performed through opening. The mechanical work produced by liquid flowing in working machine is converted into electrical energy by generator. An independent claim is included for a compressed gas storage plant.