Investigation of the effects of palm biodiesel dissolved oxygen and conductivity on metal corrosion and elastomer degradation under novel immersion method

被引：28
作者：
Chandran, Davannendran [1 ,2 ]
Hoon Kiat Ng [1 ]
Harrison Lik Nang Lau [2 ]
Gan, Suyin [1 ]
Choo, Yuen May [2 ]
机构：
[1] Univ Nottingham Malaysia Campus, Fac Engn, Jalan Broga, Semenyih 43500, Selangor Darul, Malaysia
[2] Malaysian Palm Oil Board, 6 Persiaran Inst,Bandar Baru Bangi, Kajang 43000, Selangor Darul, Malaysia
来源：
APPLIED THERMAL ENGINEERING | 2016年 / 104卷
关键词：
Conductivity; Dissolved oxygen; Fuel delivery materials; Modified immersion; Palm biodiesel; OXIDATIVE STABILITY; BLENDS; COPPER; TRANSFORMERS; ANTIOXIDANTS; ALUMINUM; ENGINE; SYSTEM;
D O I：
10.1016/j.applthermaleng.2016.05.044
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The aim of this work was to investigate the compatibility of fuel delivery materials with palm biodiesel fuel under novel immersion method which simulated diesel engine operation. For this, a two-stage investigation was conducted. In the first stage, the effects of biodiesel dissolved oxygen concentration and conductivity value on fuel delivery materials degradation under standard immersion were determined as a baseline study. In the second stage, modified immersion investigations which simulated the deterioration of biodiesel under common rail diesel engine operation (CRDE) were carried out to ascertain the compatibility present between fuel delivery materials and palm biodiesel. Palm biodiesel dissolved oxygen and conductivity were found to adversely affect both copper corrosion and nitrile rubber (NBR) degradation. The copper corrosion rate and NBR volume change increased by 9% and 13%, respectively due to 22.5% increase in the conductivity. In contrast, the copper corrosion rate and NBR volume swelling reduced by 91% and 27%, respectively due to 96% reduction in the dissolved oxygen concentration. Copper corrosion and NBR degradation were found to be lowered by up to 93% and 85%, respectively under modified immersion as compared to standard immersion. This study has inferred that good compatibility is present between fuel delivery materials and biodiesel under CRDE operation. (C) 2016 Elsevier Ltd. All rights reserved.
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页码：294 / 308
页数：15
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