Air Extraction in a Gas Turbine for Integrated Gasification Combined Cycle (IGCC): Experiments and Analysis
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In this article, a combined experimental and computational approach was undertaken to verify results of an approximate analysis: whether extracting air from the turbine wrapper would create unacceptable nonuniformity in the flow field inside the compressor discharge casing.Abstract:
This paper presents an investigation of extracting air from the compressor discharge of a heavy-frame gas turbine. The study was aimed to verify results of an approximate analysis: whether extracting air from the turbine wrapper would create unacceptable nonuniformity in the flow field inside the compressor discharge casing. A combined experimental and computational approach was undertaken. Cold flow experiments were conducted in an approximately one-third scale model of a heavy-frame gas turbine; a closely approximated 3-D computational fluid dynamic analysis was also performed. This study substantiated the earlier prediction that extracting air from the turbine wrapper would be undesirable although this method of air extraction is simple to retrofit. Prediffuser inlet is suggested as an alternate location for extracting air. The results show that not only the problem of flow non-uniformity was alleviated with this alternate scheme, but the frictional power loss in the compressor discharge casing was also reduced by a factor of two.Copyright © 1994 by ASMEread more
Citations
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Journal ArticleDOI
Simultaneous optimization and integration of gas turbine and air separation unit in IGCC plant
TL;DR: In this paper, a simultaneous optimization and integration methodology is developed for the system of ASU and GT to increase the net power generation in integrated gasification combined cycle (IGCC) plant.
Journal ArticleDOI
Effect of Air Extraction for Cooling and/or Gasification on Combustor Flow Uniformity
TL;DR: In this paper, the effect of air extraction for cooling or gasification on the flow distributions at the combustors' inlets was investigated in a 48 percent scale, 360 deg model of the diffuser-combustor section of an industrial gas turbine.
Proceedings ArticleDOI
Cold Flow Experiments in a Sub-Scale Model of the Diffuser-Combustor Section of an Industrial Gas Turbine
TL;DR: In this article, the authors describe the experimental facility and flow measurements in a sub-scale, 360-degree model of the diffuser-combustor section of an advanced developmental industrial gas turbine.
Book ChapterDOI
The gas and steam turbines and combined cycle in IGCC systems
TL;DR: In this paper, the fundamental thermodynamics of Brayton and Rankine cycles are presented, followed by discussions of the working principles of each component in gas turbines, including aerodynamics in compressors, turbines, and the reverse-flow combustor and dump diffuser assembly, turbine airfoil cooling, and combustion mechanisms.
Journal ArticleDOI
Reduced Integration Optimization Model for Coupled Elevated-Pressure Air Separation Unit and Gas Turbine in Oxy-combustion and Gasification Power Plant
TL;DR: In this article, the gap of systematic analysis of air separation unit (ASU) and gas turbine (GT) integrations in integrated gasification combined cycle (IGCC) power plant has been fulfilled in the elevated-pressure ASU operation conditions beyond discrete case studies.
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