Energy Storage System with pressurized to a pressure Accumulator to store gas under pressure and with a Heat Accumulator to store because the heat Accumulator is operationally for its part located in an area of overpressure, and Method for storing Energy The form of stored gas.

摘要

The invention relates to a compressed air energy storage system comprising a pressure accumulator (2) for gas to be stored under pressure, and a heat accumulator (27) for storing the compression heat that has accumulated during charging of the pressure accumulator (2), wherein the heat accumulator (27) is arranged ready for use in an overpressure zone (31). Said arrangement enables a structurally simple heat accumulator to be provided, since said heat accumulator is not loaded by the pressure of the gas passing therethrough.