Compressed air energy storage (Work for compression)

Description

Compressed air energy storage is a way to store energy generated at one time for use at another time using compressed air. In order to achieve a near thermodynamic reversible process so that most of the energy is saved in the system and can be retrieved, and losses are kept negligible, a near reversible isothermal process or an isentropic process is desired. From a process from an initial state A to a final state B, with absolute temperature constant, one finds the work required for compression (negative) or done by the expansion (positive),