Patent ID: 7472550
Filing Date: 2009-01-06
Classification: F01D,F02C,F05D,Y02T

Abstract:
1. A turbine system comprising: a turbine system including a first compressor for receiving air and providing compressed air, the compressed air being fluidly connected to a mixing point, the mixing point being fluidly connected to an input of a second compressor, an output of the second compressor being fluidly connected to an input of a combustor, the combustor providing a hot gas flow, the hot gas flow being fluidly connected to an input of a high pressure turbine, the high pressure turbine providing an exhaust gas flow, a low pressure turbine being fluidly connected to the high pressure turbine for receiving at least a portion of the exhaust gas flow, and a recirculation means for recirculating at least another portion of the exhaust gas flow back to mix with the compressed air at the mixing point to form an air-gas mixture; and a refrigeration system disposed at least in part after the mixing point; wherein the refrigeration system is constructed and arranged to cool the air-gas mixture between the first compressor and the second compressor, wherein the refrigeration system is constructed and arranged to use exhaust heat from (i) the first compressor, (ii) the recirculated portion of the hot exhaust gas flow, or (iii) both.