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Improving the performance of gas turbine power plant by modified axial turbine

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posted on 2019-01-15, 15:23 authored by Hakim T. Kadhim, Faris A. Jabbar, Aldo Rona, Audrius Bagdanavicius
Computer-based optimization techniques can be employed to improve the efficiency of energy conversions processes, including reducing the aerodynamic loss in a thermal power plant turbomachine. In this paper, towards mitigating secondary flow losses, a design optimization workflow is implemented for the casing geometry of a 1.5 stage axial flow turbine that improves the turbine isentropic efficiency. The improved turbine is used in an open thermodynamic gas cycle with regeneration and cogeneration. Performance estimates are obtained by the commercial software Cycle – Tempo. Design and off design conditions are considered as well as variations in inlet air temperature. Reductions in both the natural gas specific fuel consumption and in CO2 emissions are predicted by using the gas turbine cycle fitted with the new casing design. These gains are attractive towards enhancing the competitiveness and reducing the environmental impact of thermal power plant.


This research used the ALICE high performance computing facility at the University of Leicester. Graphical rendering software licenses were originally acquired with EPSRC support on Grant GR/N23745/01. The Higher Committee for Education Development in Iraq (HCED) is acknowledged. The supply of experimental data for the 1.5 stage axial flow turbine “Aachen Turbine” under license by RWTH Aachen is gratefully acknowledged.



International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, 2018, 12 (6), pp. 690-696 (7)

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