Energetic and Exergetic Analyses of a Dual-Fuel Diesel Engine Run on Preheated Intake Biogas-Air Mixture and Oxygenated Pilot Fuels
Publication: Journal of Energy Engineering
Volume 146, Issue 5
Abstract
In the present study of energy and exergy, the raw biogas is chosen as the less reactive inducted renewable fuel in dual-fuel mode (DFM). Further, some crucial parameters like global fuel-air equivalence ratio (), intake charge preheating, and various liquid oxygenated fuels blended with diesel as the pilot fuel are considered to improve the DFM engine performance. The experiments at part and higher loads are carried out at the engine’s standard compression ratio (CR) and injection timing (IT). The parameters examined are the energy and exergy potential of fuel input, cooling water, exhaust gas, exergy destruction, energy efficiency, exergy efficiency, entropy generation, energy and exergy recovery from the exhaust, and emissions. Energy, exergy and emissions are noticed to be improved significantly at higher loads, with preheating, and with the use of blends of oxygenated pilot fuels at optimum . The superior results are found with the ternary blends of diethyl ether (TB-DEE) as the pilot fuel. At higher load of with TB-DEE blend (pilot fuel), the maximum energy recovery, exergy recovery, reductions of CO and Unburnt hydrocarbon (HC) of 26.99%, 36.03%, 51.72%, and 67.39%, respectively, are estimated in comparison with the case without preheating.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
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Published In
Journal of Energy Engineering
Volume 146 • Issue 5 • October 2020
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Dec 27, 2019
Accepted: Mar 31, 2020
Published online: Jul 7, 2020
Published in print: Oct 1, 2020
Discussion open until: Dec 7, 2020
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