Patent ID: 6978621
Filing Date: 2005-12-27
Classification: F01D,F02C,F05D

Abstract:
1. A gas turbine engine comprising: a compressor having an inlet and an outlet, the compressor being configured to receive a coolant fluid stream, to compress the coolant fluid stream and to discharge the compressed coolant fluid stream; a turbine in fluid communication with the compressor for receiving the compressed coolant fluid stream from the compressor outlet, the compressed coolant fluid stream undergoing thermal exchange with the turbine and exiting the turbine thereafter; and a source of a working fluid stream in fluid communication with the turbine, the working fluid stream being fluidly isolated from at least a portion of the coolant fluid stream, undergoing thermodynamic expansion through the turbine to extract energy therefrom and exiting the turbine thereafter, a portion of the extracted energy being utilized to drive the compressor, wherein at least a portion of the coolant fluid stream being preheated in the turbine is channeled downstream of the turbine to supply a preheated process fluid stream to an adjacent system configured as a separate system, which is outside of a control volume of the gas turbine engine and does not return the preheated process fluid stream to the control volume of the gas turbine engine, and wherein the coolant fluid stream received by the turbine consists of the compressed coolant fluid stream received from the compressor.