Patent ID: 6901759
Filing Date: 2005-06-07
Classification: F02C,Y02E

Abstract:
1. method for operating a partially closed, turbocharged gas turbine cycle, the method comprising: burning fuel in a combustion chamber while supplying a gaseous, compressed working medium which contains combustion air, to generate hot combustion gases; expanding a working medium which contains the hot combustion gases in a turbine of a gas turbine, said turbine performing work; extracting heat from the expanded working medium in a downstream recuperator to generate cooled working medium; compressing the cooled working medium in a compressor of the gas turbine; feeding heat to the compressed working medium in the recuperator before said compressed working medium re-enters the combustion chamber; removing a portion of the expanded working medium on a low-pressure side of the recuperator at a removal location which is at a first temperature level, and further expanding said removed expanded working medium portion in the turbine of a first exhaust-gas turbocharger; sucking in and compressing air with a compressor of the first exhaust-gas turbocharger; and feeding the compressed air to the working medium on the low-pressure side of the recuperator at a feed location which is at a second temperature level; wherein said gas turbine compressor comprises a radical compressor.