Impact of different nano additives on performance, combustion, emissions and exergetic analysis of a diesel engine using waste cooking oil biodiesel

IF 5.4 2区工程技术 Q1 ENGINEERING, AEROSPACE

Propulsion and Power Research Pub Date : 2022-06-01 DOI:10.1016/j.jppr.2022.04.004

M.S. Gad , Mostafa M. Abdel Aziz , Hatem Kayed

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引用次数: 0

Abstract

Biodiesel is derived from waste cooking oil (WCO) by transesterification. Methyl ester was prepared by mixing diesel and biodiesel oils as 20% by volume. Nano particles as TiO₂, Al₂O₃ and CNTs were blended with biodiesel blend at different concentrations of 25, 50, and 100 mg/l to enhance the physicochemical fuel characteristics to obtain clean and efficient combustion performance. An experimental setup was incorporated into a diesel engine to investigate the influence of these nano-materials on engine performance, exergy analysis, combustion characteristics and emissions using WCO biodiesel-diesel mixture. Enriching methyl ester mixture with 100 ppm titanium, alumina and CNTs (B20T100, B20A100 and B20C100) increased the thermal efficiency by 4%, 6% and 11.5%, respectively compared to B20. Biodiesel blending with nano additives B20T100, B20A100 and B20C100 decreased the emissions of CO (11%, 24% and 30%, respectively), HC (8%, 17% and 25%, respectively) and smoke (10%, 13% and 19%, respectively) compared to B20. However, the noticeable increase of NO_x was estimated by 5%, 12% and 27% for B20T100, B20A100 and B20C100, respectively. Finally, the results showed the rise in peak cylinder pressure by 5%, 9% and 11% and increase in heat release rate by 4%, 8% and 13% for B20T100, B20A100 and B20C100, respectively. The fuel exergy of B20T100, B20A100 and B20C100 are lower than biodiesel blend B20 by 6.5%, 16% and 23% but the exergetic efficiency are increased by 7%, 19% and 30% at full load about B20.

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不同纳米添加剂对废食用油生物柴油发动机性能、燃烧、排放及火用分析的影响

生物柴油是从废食用油(WCO)中通过酯交换反应得到的。以体积比为20%的柴油和生物柴油混合制备甲酯。将TiO2、Al2O3和CNTs等纳米颗粒分别以25、50和100 mg/l的浓度与生物柴油混合，增强燃料的理化特性，获得清洁高效的燃烧性能。在一台柴油发动机上安装了实验装置，研究这些纳米材料对使用WCO生物柴油-柴油混合物的发动机性能、火用分析、燃烧特性和排放的影响。与B20相比，添加100 ppm钛、氧化铝和碳纳米管的甲酯混合物(B20T100、B20A100和B20C100)的热效率分别提高了4%、6%和11.5%。与B20相比，添加纳米添加剂B20T100、B20A100和B20C100的生物柴油的CO排放量分别降低了11%、24%和30%，HC排放量分别降低了8%、17%和25%，烟雾排放量分别降低了10%、13%和19%。然而，B20T100、B20A100和B20C100的NOx排放量分别增加了5%、12%和27%。结果表明，B20T100、B20A100和B20C100的峰值缸压分别提高了5%、9%和11%，放热率分别提高了4%、8%和13%。B20T100、B20A100和B20C100的燃料用能比生物柴油混合物B20分别低6.5%、16%和23%，而B20左右的满负荷用能分别提高7%、19%和30%。

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来源期刊

Propulsion and Power Research Multiple-

CiteScore

7.50

自引率

5.70%

发文量

期刊介绍： Propulsion and Power Research is a peer reviewed scientific journal in English established in 2012. The Journals publishes high quality original research articles and general reviews in fundamental research aspects of aeronautics/astronautics propulsion and power engineering, including, but not limited to, system, fluid mechanics, heat transfer, combustion, vibration and acoustics, solid mechanics and dynamics, control and so on. The journal serves as a platform for academic exchange by experts, scholars and researchers in these fields.