Method for operating a partially closed, turbocharged gas turbine cycle, and gas turbine system for carrying out the method
First Claim
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.
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Accused Products
Abstract
A gas turbine system includes a gas turbine (1, 2, 3) having a compressor (1) and a turbine (2), which via a common shaft (3) drive a generator (4), and a combustion chamber (6), the exit of which is connected to the entry to the turbine (2) of the gas turbine (1, 2, 3), has a fuel feed (8) and receives combustion air from the exit of the compressor (1) of the gas turbine (1, 2, 3) via the high-pressure side of a recuperator (5), the exit of the turbine (2) and the entry to the compressor (1) of the gas turbine (1, 2, 3) being connected via the low-pressure side of the recuperator (5), and a first exhaust-gas turbocharger (ATL2) which sucks in air being connected to different locations (9, 10) of the low-pressure side of the recuperator (4) via the exit of its compressor (13) and the entry to its turbine (14).
52 Citations
22 Claims
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1. method for operating a partially closed, turbocharged gas turbine cycle, the method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification