Title: Customised application of exergy analysis method to PW120A turboprop engine for performance evaluation

Authors: Yasin Şöhret; M. Ziya Sogut; T. Hikmet Karakoc; Onder Turan

Addresses: Aircraft Technology Program, Keciborlu Vocational School, Suleyman Demirel University, TR-32700 Isparta, Turkey ' Engineering Faculty, Department of Mechanical Engineering, Bursa Orhangazi University, TR-16350 Bursa, Turkey ' Department of Airframe and Powerplant Maintenance, Faculty of Aeronautics and Astronautics, Anadolu University, TR-26470 Eskisehir, Turkey ' Department of Airframe and Powerplant Maintenance, Faculty of Aeronautics and Astronautics, Anadolu University, TR-26470 Eskisehir, Turkey

Abstract: In this paper, first and second laws of thermodynamics are applied on a turboprop engine of a regional aircraft. Performance parameters of the engine are assessed under take-off conditions and maximum power settings. Energy and exergy rates, exergy destruction rate, improvement potential, fuel depletion rate and productivity rate are proven by using component-based analysis method. Exergy destruction rates are found to be 337.12 kW, 1461.87 kW, 69.74 kW and 269.22 kW in order of air compressor, combustion chamber, gas turbine and free turbine. In addition, exergy efficiencies of the air compressor, combustion chamber, gas turbine and free turbine are calculated to be 86.95%, 82.16%, 97.86% and 85.52%, respectively, whilst energy and exergy efficiencies of the engine are found to be with the values of 27.89% and 26.74%. Obtained results from this study can be useful to improve performance of a turboprop engine still in service.

Keywords: energy analysis; exergy analysis; gas turbines; propulsion; regional aircraft; thermodynamics; PW120A turboprop engines; performance evaluation; take-off conditions; maximum power settings; exergy destruction; fuel depletion rate; productivity rate; component-based analysis; air compressor; combustion chamber; exergy efficiency; energy efficiency.

DOI: 10.1504/IJEX.2016.076678

International Journal of Exergy, 2016 Vol.20 No.1, pp.48 - 65

Received: 18 Jul 2014
Accepted: 12 May 2015
Published online: 20 May 2016 *

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