Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
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Item Characterization and performance study of biodiesel from waste cooking oil in a direct injection diesel engine(Combustion Institute, 2009) Mohanan, P.Analysis of different samples of Waste Cooking Oil (WCO) to assess their suitability as raw material for the production of biodiesel through transesterification reaction is carried out. The degradation of cooking oil is mainly due to the thermal oxidation reaction and hydrolysis reaction during frying. Acid-alkali and alkali methods are employed for transesterification reaction for producing biodiesel from thermally degraded WCO obtained under controlled laboratory conditions. The work focuses also the determination of catalyst required for the transesterification process and the correlation with acid value and Free Fatty Acid (FFA) content of the WCO. It was established that acid-alkali method gave better physiochemical properties compared to alkali method and B20 blend obtained by this method has shown comparable performance and improved emission characteristics with diesel fuel when tested in a compression ignition (C.I) engine. © 2009 Combustion Institute. All rights reserved.Item The effect of cyclo- alkane in Waste Cooking Oil (WCO) B20 fuel on a single cylinder di diesel engine(Korean Society of Combustion, 2013) Varghese, G.; Mohanan, P.Diesel engine combustion generates large amounts of oxides of nitrogen due to the presence of oxygen and nitrogen in the combustion chambers at high flame-temperatures. The main component of total cost of producing bio-diesel comprises the cost of raw materials. The use of a low cost feedstock such as Waste Cooking Oil (WCO) can help make biodiesel much cheaper than diesel derived from petroleum sources. Waste cooking oil, which is otherwise wasted, is one of the most economical choices to produce biodiesel [1]. In this investigation, Cyclo- Pentane and Cyclo- Hexane were used as blend-components. The scope of this work also includes studies on various fuel-blends of B20 with varying percentages of blend-components, and comparisons to fossil-based diesel. The studies performed also include investigations on the emission characteristics of B20 with blend-components at different loading conditions. The tests performed indicate that the use of B20 with 1.5% cyclo-hexane as a blend-component, resulted in a significant reduction in NOx emissions by 4% when compared to fossil-based diesel, at a normal injection timing of 27.5° before-top dead-center (btdc), at full-load conditions. It was also observed that the B20 blend with 1% cyclo-pentane possessed the lowest smoke opacity of/by 36% at full-load conditions.