CONSTANT FLOW FUNCTION AIR EXPANSION TRAIN WITH COMBUSTER

摘要

A compressed air energy storage system (1) is described, comprising a compressor (3) fluidly coupled to a compressed air reservoir (9) and an expansion train (10) comprising at least a first turbine (7). The system (1) further comprises an electric machine aggregate (5) configured: for converting electric power into mechanical power and driving the compressor (3) therewith during the energy storing mode; and for converting mechanical power produced by the expansion train (10) into electric power during the power production mode. A combustor (21) is configured for receiving fuel (F) and compressed air and producing combustion gas, and for supplying the combustion gas to the first turbine (7).