Title: Exergy analysis of an air-blasted combustor: an application for atmospheric test rig condition

Authors: Ahmet Topal; Onder Turan; Sitki Uslu; M. Ziya Sogut

Addresses: TUSAS Engine Industries (TEI), Eskisehir 26003, Turkey ' Faculty of Aeronautics and Astronautics, Anadolu University, TR-26470 Eskisehir, Turkey ' TOBB University of Economics and Technology, Department of Mechanical Engineering, Ankara 06560, Turkey ' Engineering Faculty, Orhangazi University, Mechanical Engineering Department, Bursa 16310, Turkey

Abstract: Combustion of fuel finds its importance in heating, power production and transportation. The main objective of this study is to assess the performance of an air-blasted combustor using the exergy at different combustor exit temperatures (T₄). Exergetic metrics of the combustor in a test rig were made between 1,100 < T₄ ≤ 1500K. JP8 kerosene-type fuel was used for analysis. For the combustor, exergy efficiency was calculated to be between 49.3% and 59.4%. Furthermore, greatest exergy destruction is found at highest combustor exit temperature (138.7 kW at 1500 K), while the lower exergy destructions are found at 1102 K with the value of 90.7 kW. The methodology and the results of this study can be beneficial for further improvement, and development of similar combustor systems for designers.

Keywords: air-blasted combustors; energy analysis; turbojet; exergy analysis; atmospheric test rig; combustor exit temperatures; fuel combustion; kerosene; combustor design; exergy efficiency; exergy destruction.

DOI: 10.1504/IJEX.2016.076676

International Journal of Exergy, 2016 Vol.20 No.1, pp.1 - 21

Received: 17 Nov 2014
Accepted: 12 Apr 2015
Published online: 20 May 2016 *

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