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Analysing NOx and soot formations of an annular chamber with various types of biofuels

  • Joanne Zi Fen, Lim (School of Aerospace Engineering, Engineering Campus, Universiti Sains Malaysia) ;
  • Nurul Musfirah, Mazlan (School of Aerospace Engineering, Engineering Campus, Universiti Sains Malaysia)
  • Received : 2022.08.28
  • Accepted : 2022.11.21
  • Published : 2022.11.25
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Abstract

The rapid decrease of fossil fuel resources and increase of environmental pollution caused by aviation industries have become a severe issue which leads to an increase in the greenhouse effect. The use of biofuel becomes an option to alleviate issues related to unrenewable resources. This study presents a computational simulation of the biofuel combustion characteristics of various alternative fuels in an annular combustion chamber designed for training aircraft. The biofuels used in this study are Sorghum Oil Methyl Ester (SOME), Spirulina Platensis Algae (SPA) and Camelina Hydrotreated Esters and Fatty Acids (CHEFA). Meanwhile, Jet-A is used as a baseline fuel. The fuel properties and combustion characteristics are being investigated and analysed. The results are presented in terms of temperature and pressure profiles in addition to the formation of NOx and soot generated from the combustion chamber. Results obtained show that CHEFA fuel is the most recommended biofuel among all four tested fuels as it is being found that it burns with 37.6% lower temperature, 15.2% lower pressure, 89.5% lower NOx emission and 8.1% lower soot emission compared with the baseline fuel in same combustion chamber geometry with same initial parameters.

Keywords

Acknowledgement

The authors would like to acknowledge Ministry of Higher Education Malaysia, grant number FRGS/1/2019/TK07/USM/03/5 and Graduate Fellowship USM (GFUSM) for the financial support.

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