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Experimental study of using biogas in Pulse Detonation Engine with hydrogen enrichment

Elhawary, Shehab and Saat, Aminuddin and Wahid, Mazlan Abdul and Ghazali, Ahmad Dairobi (2020) Experimental study of using biogas in Pulse Detonation Engine with hydrogen enrichment. International Journal of Hydrogen Energy, 45 (30). pp. 15414-15424. ISSN 0360-3199

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Official URL: http://dx.doi.org/10.1016/j.ijhydene.2020.03.246

Abstract

Pulse Detonation Engine (PDE) is one of the pressure gain engines that provide prominent features over conventional engines such as higher thermodynamic efficiency, higher thrust, and less design complexity. Biogas is one of the promising alternative energy sources. The aim of this paper is to study the influence of hydrogen addition in biogas on detonation characteristics performance of PDE. The ideal detonation combustion characteristics of biogas are estimated using NASA Chemical Equilibrium with Applications (CEA). The equivalence ratio range is varied from 0.7 to 1.4. It was found that the higher the percentage of methane concentration in biogas increased the detonation characteristics of biogas such as pressure, temperature, and Mach number. However, a reduction in the flame speed, temperature, and pressure of biogas compared to pure methane was stipulated to be due to the presence of CO2 that acts as a dilutant in biogas. It was found also that, the optimal percentage of hydrogen addition into the biogas fuel mixture is 15%. At this percentage, the detonation pressure improved by 23%. The performance of PDE fuelled by biogas is presented experimentally at a frequency of 10 Hz. The results show a successful and stable detonation initiation in PDE by using biogas with 15% and 20% addition of hydrogen.

Item Type:Article
Uncontrolled Keywords:Alternative fuels, Biogas
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:87240
Deposited By: Widya Wahid
Deposited On:31 Oct 2020 12:27
Last Modified:31 Oct 2020 12:27

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