No abstract

In this study and analysis, the physical properties such as calorific value, viscosity, flash, and fire point temperatures of rice bran oil methyl ester were found. The rice bran oil biodiesel has been prepared by transesterification process from pure rice bran oil in the presence of methanol and NaOH. Moreover, property enhancement of rice bran oil methyl ester was also made by adding different additives such as ethanol in various proportions. Rice bran oil methyl ester with 1, 3, and 5% ethanol were analyzed for its fuel properties. The effects of diesel-B20ROME blends with ethanol additive of 1, 3, and 5% on a compression ignition engine were examined considering its emissions. It is found that the increase in biodiesel concentration in the fuel blend influences CO 2 and NO x emissions. On the other hand CO and HC emissions are reduced. It is interesting to observe the emission as ethanol-B20ROME blends, reduces CO 2 and NO x which are the major contributors to global warming. As the NO x and CO 2 can be reduced drastically by the proposed blends, the global warming can be reduced considerably.

In the present work, straight sunflower oil and rice bran oil blended with diesel have been used as fuel diesel in a mini boiler. The thermal efficiency of the boiler and emission levels in the exhaust gases have been investigated by burning the oil blends of varying proportions ranging from 0-50%. An additional air supply system and compressed air atomization of fuel with a new burner have been used to improve the thermal efficiency of the mini boiler. Results revealed that the additional air supply improved the thermal efficiency up-to 7% and reduced the CO and HC emission up-to 40%. The use of compressed air atomization further increased the thermal efficiency up-to 4% and reduced the CO and HC emission up-to 70%.