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Oxygenated sunflower biodiesel: spectroscopic and emissions quantification under reacting swirl spray conditions

Chong, Cheng Tung and Chiong, Meng Choung and Ng, Jo Han and Lim, Mooktzeng and Tran, Manh Vu and Valera-Medina, Agustin and Chong, William Woei Fong (2019) Oxygenated sunflower biodiesel: spectroscopic and emissions quantification under reacting swirl spray conditions. Energy, 178 . pp. 804-813. ISSN 0360-5442

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Official URL: http://dx.doi.org/10.1016/j.energy.2019.04.201

Abstract

The spray combustion characteristics of sunflower (Helianthus annuus) biodiesel/methyl esters (SFME) and 50% SFME/diesel blend and diesel were investigated via a liquid swirl flame burner. The swirl flame was established at atmospheric condition by using a combined twin-fluid atomiser-swirler configuration at varied atomising air-to-liquid ratios (ALR) of 2.0–2.5. Diesel flame showed a sooty flame brush downstream of the main reaction zone, as opposed to the biodiesel flame which showed a non-sooty, bluish flame core. Biodiesel flame exhibited a more intense flame spectra with higher OH* radicals as compared to diesel. Higher preheating main swirl air temperature led to higher NO emission, while CO correspondingly decreased. Sunflower-derived biodiesel generally exhibited slightly higher NO and CO levels than diesel when compared at the same power output, mostly due to higher flame temperature and fuel chemistry effect. By increasing ALR, a significant reduction of NO and CO for both fuel types were concurrently achieved, presenting a strategy to control emissions and atomise biodiesel with higher viscosity under swirl combustion mode.

Item Type:Article
Uncontrolled Keywords:emissions, methyl esters, sunflower, swirl
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:88652
Deposited By: Yanti Mohd Shah
Deposited On:15 Dec 2020 18:36
Last Modified:15 Dec 2020 18:36

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