Title: Exergy analysis of a turbofan aircraft engine

Authors: Enis T. Turgut, T. Hikmet Karakoc, Arif Hepbasli, Marc A. Rosen

Addresses: School of Civil Aviation, Anadolu University, TR-26470 Eskisehir, Turkey. ' School of Civil Aviation, Anadolu University, TR-26470 Eskisehir, Turkey. ' Faculty of Engineering, Department of Mechanical Engineering, Ege University, TR-35100 Bornova, Izmir, Turkey. ' Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, Ontario L1H 7K4, Canada

Abstract: An exergy analysis is reported for a General Electric turbofan engine (the CF6-80) using sea-level data. The effects on exergy efficiencies and exergy destructions are investigated of modifying the isentropic efficiencies of turbomachinery components. The most irreversible units in the system are found to be the fan and the core engine exhaust, with exergy loss rates of 47.3 MW and 35.9 MW, respectively, and the combustion chamber, with an exergy destruction rate of 31.5 MW. The exergy efficiencies of the fan and the core engine exhausts are found to be 12.9 and 12.7%, respectively.

Keywords: exergy analysis; turbofan engines; Brayton cycle; efficiency; aerospace industry; aircraft engines; isentropic efficiencies; turbomachinery; fans; core engine exhaust; combustion chamber; exergy loss; exergy destruction.

DOI: 10.1504/IJEX.2009.023997

International Journal of Exergy, 2009 Vol.6 No.2, pp.181 - 199

Available online: 22 Mar 2009 *

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