Title: Comparative study of combustion, performance, and emissions of a diesel engine fuelled with biodiesel blend with metallic and organic nano-particles

Authors: E.A. Elsharkawy; M.M. Abou Al-Sood; M.K. El-Fakharany; M. Ahmed

Addresses: Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh 33511, Egypt ' Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh 33511, Egypt ' Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh 33511, Egypt ' Department of Energy Resources Engineering, Egypt-Japan University of Science and Technology (E-JUST), Alexandria 21934, Egypt; Mechanical Engineering Department, Assiut University, Assiut 71516, Egypt

Abstract: This study investigates the effect of adding two types of nano-particles to castor biodiesel-diesel on combustion, performance, and emission characteristics of diesel engine. Blended fuels were experimentally tested by running the engine at various loads at a constant speed. The experimental analysis indicated that diesel-biodiesel blends with aluminium oxide nano-particles (ALNPs) show better results than multi walled carbon nanotubes (MWCNT) for higher cylinder peak pressure, lower ignition delay, higher BTE and lower emissions for CO while MWCNT diesel-biodiesel blends have slight improvement in NO_x emissions. The peak pressure increase was approximately 2.2% while BTE increased by 6.1%. The maximum reduction in NO_x emissions was 30.5%, while the reduction in CO emission was 28.52%. For MWCNT addition, increase in cylinder pressure recorded was 3.3%, and the BTE was enhanced by 6.2%, NO_x emission decreased by 30.25%, while the greatest reduction in CO was 57.2% for the fuel blend with ALNPs. Finally, adding MWCNT to biodiesel blend CB30 increases the cost of producing 1.0 kWh by 41%-170% whereas adding ALNPs has a negligible effect in the cost.

Keywords: castor biodiesel; nano-particles; combustion; performance; emissions.

DOI: 10.1504/IJGW.2020.110292

International Journal of Global Warming, 2020 Vol.22 No.2, pp.133 - 159

Received: 24 Aug 2019
Accepted: 21 Mar 2020
Published online: 13 Oct 2020 *

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