Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

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Author: search.filters.author.Mohanan, P.Subject: search.filters.subject.Emission

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    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.
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    Experimental analysis of cardanol biofuel as an alternative fuel for diesel engines with air-side oxygen enrichment
    (Trans Tech Publications Ltd ttp@transtec.ch, 2014) Dinesha, P.; Nayak, V.; Kumar, D.; Mohanan, P.
    The present study investigates the effect of air-side oxygen concentration enrichment on the performance and emission of a single cylinder diesel engine using a bio-fuel blend as fuel. In this study, a natural phenolic compound, namely, cardanol is selected as the bio-fuel, which is obtained from the shell of cashew nut after purification. A blend of B10M10 (10% cardanol +10% methanol + 80% diesel by volume) is prepared and tested in the engine at various loading conditions. The experiments are carried out at atmospheric oxygen condition and an increment of 3, 5, and 7% of atmospheric oxygen concentration by weight. There is a drastic reduction in HC, CO, and smoke except for NOx emission. The level of NOx emission increases as the oxygen concentration in the intake air is increased. The performance characteristic will increase as the oxygen concentration increases, and higher brake thermal efficiency is obtained for B10M10 at 7% oxygen concentration. B10M10 with 7% oxygen enrichment gives better results, similar to diesel, except for NOx emission. © (2014) Trans Tech Publications, Switzerland.