Waste heat recovery circuit for gas turbine - has coolant supply connected to turbine circuit via heat exchangers

摘要

Method increasing the usable waste heat quantity of an enclosed gas turbine installation is used in conjunction with a heat circuit having a fluid as heat carrier. The circuit is additional and connected to the gas turbine circuit via heat-exchangers. The heat carrying fluid, which is the coolant for the gas turbine circuit, has heat extracted from it prior to entry in the cooler, and is brought to a higher temp. level again after leaving it. A suitable coolant fluid receives heat from the heat carrier in a low temp. heat transmitter, and by feed into a pump or compressor is brought to a temp. higher than that of the heat carrier on leaving the gas turbine cooler. It then transmits heat to the heat carrier in a high temp. transmitter, afterwards being brought back to the condition suitable for entry in the low temp. heat transmitter.