Abstract
AbstractIn this work, cotton seed crude oil was obtained from the dried seeds using mechanical device called expeller. The free fatty acid (FFA) of cotton seed crude oil was found higher so it was subjected to double stage transesterification process. The maximum yield of cotton seed biodiesel was found with optimized variables; catalytic concentration, molar ratio and reaction time. In addition to pure biodiesel usage the methyl ester (neat diesel) and Al2O3 nano particle additives were used to blend the biodiesel in different proportions. The properties of the blend made of 20% cotton seed biodiesel and 80% methyl ester and Al2O3 nanoparticles were found close to pure diesel properties. A single cylinder, four strokes diesel engine was tested at different loads by maintaining constant speed with cotton seed biodiesel and its blends with methyl ester and Al2O3. It is observed that comparatively higher brake thermal efficiency (BTE), lesser brake specific fuel consumption (BSFC) and higher exhaust gas temperature (EGT) for blend made of 20% cotton seed biodiesel and 80% methyl ester and Al2O3 nanoparticles.KeywordsCotton seedMechanical expellerTrans-esterification processMethyl esterAl2O3BTEBSFC & EGT
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