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Emission analysis for a new tubular aeroengine combustor in atmospheric test rig conditions

Ahmet Topal (Tusas Engine Industries Inc, Eskisehir, Turkey)
Onder Turan (Department of Aeronautics and Astronautics, Eskisehir Teknik Universitesi, Eskisehir, Turkey and Advisory Board Member of Information Technology Research and Application Center, Istanbul Ticaret University, Istanbul, Turkey)

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 19 September 2022

Issue publication date: 14 February 2023

104

Abstract

Purpose

The purpose of this study is to have semiempirical correlations for carbon monoxide (CO), unburned hydrocarbon (UHC) and nitrogen oxide (NOx) emissions that are collected and calibrated by using experimental data of a tubular-type combustor.

Design/methodology/approach

Combustor uses a coflow radial-type air-blast atomizer and is especially designed for the empirical correlation issues. Air mass flow rate, air inlet temperature and air-to-fuel ratio parameters have been changed and different inlet conditions have been created for combustor tests. Six different inlet temperatures from 475 to 350 K have been set for each air mass flow rate. Air mass flow rate values from 0.035 to 0.050 kg/s have been used to create varied combustor aerodynamic loadings.

Findings

Increasing combustor inlet temperature decreases the CO and UHC emissions. However, it has an adverse effect in NOx emissions. Moreover, CO and UHC emissions have an increasing trend by the mass flow rate rise that results an extra aerodynamic loading.

Research limitations/implications

It is difficult to obtain real operating parameters for the combustor. Therefore, as a different approach in respect of the literature, rig test parameters have been used for thermodynamic calculations. Additionally, emission calculations of the combustor design point have been performed based on a conditioned test environment. Moreover, combustor outlet temperature and emission values have been scanned and mean values used for the analysis.

Practical implications

To perform preliminary calculations for these pollutants, designers need experimentally calibrated correlations for the similar combustors.

Social implications

If the application area of the designed engine is a civil aircraft, emissions are one of the most important issues because of the strict regulations of International Civil Aviation Organization. Therefore, aviation companies are continuously working on reducing of emissions.

Originality/value

A comprehensive study for the preliminary emission calculation of newly designed gas turbine combustors was performed to investigate semiempirical correlations in the atmospheric test rig.

Keywords

Acknowledgements

The authors would like to thank TUSAS Engine Industries Inc. and colleagues who contributed to production, assembly and test processes of the combustor. Moreover, this work was performed as a part of “A New Preliminary Design Methodology for Gas Turbine Combustors” project and supported financially by the Eskisehir Technical University (Project No. 1703F075). The authors would also like to thank Eskisehir Technical University for their support.

Citation

Topal, A. and Turan, O. (2023), "Emission analysis for a new tubular aeroengine combustor in atmospheric test rig conditions", Aircraft Engineering and Aerospace Technology, Vol. 95 No. 4, pp. 569-579. https://doi.org/10.1108/AEAT-04-2022-0116

Publisher

:

Emerald Publishing Limited

Copyright © 2022, Emerald Publishing Limited

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