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Habib Gürbüz

THE EFFECT OF H2 PURITY ON THE COMBUSTION, PERFORMANCE, EMISSIONS AND ENERGY COSTS IN AN SI ENGINE

ABSTRACT
This paper aims to examine the effect of hydrogen purity on the combustion, performance, NOx emissions and energy costs in a spark ignition engine. In accordance with this purpose, two commercial hydrogen gases of different purity (i. e. 99.998% and 99.995%), were used as fuel in an spark ignition engine. The engine was operated under a lean mixture (ϕ = 0.6) and wide-open throttle conditions at 1400, 1600, and 1800 rpm engine speeds. It was found that high purity hydrogen improves engine performance parameters (i. e. indicated power, torque, thermal efficiency, and specific fuel consumption) in the range of 2.4-1.9% depending on engine speed. The combustion duration and the cyclic variations were also de-crease when the engine is operated with high purity hydrogen. However, NOx emissions increase depending on engine speed in the range of 3.4-2.9% when high purity hydrogen is used as a fuel. In addition, energy costs with high purity H2 increase in the range of 5.9-6.5% depending on engine speed.
KEYWORDS
SI engine, H2 purity, combustion, engine performance, NOx emission, energy costs
PAPER SUBMITTED: 2018-07-05
PAPER REVISED: 2018-10-26
PAPER ACCEPTED: 2018-11-13
PUBLISHED ONLINE: 2018-12-16
DOI REFERENCE: https://doi.org/10.2298/TSCI180705315G
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2020, VOLUME 24, ISSUE Issue 1, PAGES [37 - 49]
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The effect of H2 purity on the combustion, performance, emissions and energy costs in an SI engine

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence