Experimental analysis of biofuel as an alternative fuel for diesel engines

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• 作者：Edwin Geo Varuvel^a ; ^{Varuvel.edwin-geo@mines-nantes.fr} ; ^{ve_geo@yahoo.com} ; Nadia Mrad^a ; Mohand Tazerout^a ; Fethi Aloui^b
• 关键词：Waste fish fat ; Biofuel ; Catalytic cracking ; Blending ; NOx emissions and Diesel engine
• 刊名：Applied Energy
• 出版年：2012
• 期刊代码：2_03062619
• 类别：pw
• 出版时间：June, 2012
• 卷：94
• 期：Complete
• 页码：224-231
• 文件大小：1669 K

摘要

The growth of energy demand and limited fossil fuel resources lead to renewable energy development such as vegetable oils and animal fats or their derivatives. In the present work, the valuation of waste fish fat by the pyrolysis technique with the presence of catalyst to produce biofuel for diesel engines. As a result, fuel undergoes good combustion and hence there is a significant improvement in performance and reduction in emissions. The brake thermal efficiency of neat biofuel is 32.4%at 80%load which is very high compared to neat diesel (29.98%). The combustion duration and ignition delay are decreased with neat biofuel due to high oxygen content and high cetane number of biofuel. The main problem with the use of neat biofuel in diesel engine is high NO_x emissions at all loads. Addition of diesel with biofuel reduces the NO_x emissions significantly from 917 ppm to 889 ppm at 80%load with an optimum blend of B80D20. There is a slight decrease in brake thermal efficiency and increase in particulate emission with this blend. The overall results show that by adding small quantity of diesel with biofuel decreases the NO_x emissions significantly and approaches the performance of neat biofuel.