Title: Effect of reference altitudes for a turbofan engine with the aid of specific-exergy based method

Authors: Onder Turan

Addresses: School of Civil Aviation, Anadolu University, TR-26470 Eskisehir, Turkey

Abstract: This paper presents effect of reference altitudes on the exergetic efficiency of a engine with the aid of specific exergy method. between 4000-9000 m. In the analysis, and exergy efficiency of the engine is found to be from 50.34% at 4000 m to 48.91% at 9000 m. Results of this study show that increase in reference altitude decreases the exergy efficiency and increases the energy efficiency of the engine. Additionally, specific exergy analysis can also be used as an integrated indicator for determining the exergetic efficiency.

Keywords: turbofan engines; specific exergy; Brayton cycle; reference environment propulsion; reference altitudes; exergy efficiency.

DOI: 10.1504/IJEX.2012.049738

International Journal of Exergy, 2012 Vol.11 No.2, pp.252 - 270

Received: 13 Sep 2011
Accepted: 14 Dec 2011
Published online: 14 Oct 2012 *

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