An experimental study on heat exchange effectiveness in the diesel engine EGR coolers

被引：0
|
作者：
Hyung-Man Kim
Dae-Hee Lee
Sang-Ki Park
Kap-Seung Choi
Hak-Min Wang
机构：
[1] Inje University,Inje Engineering Institute School of Mechanical & Automotive Engineering
[2] Inje University,Graduate School, Department of Mechanical Engineering
来源：
Journal of Mechanical Science and Technology | 2008年 / 22卷
关键词：
Diesel engine; EGR cooler; Shell & tube-type; stack-type; Heat exchange effectiveness;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Both reducing nitrogen oxides (NOx) and particulate matter (PM) emissions from diesel engine and improving fuel consumption are important in meeting government regulations and society needs. Use of the Cooled Exhaust Gas Recirculation (EGR) system is one of the most effective techniques currently available for reducing NOx and PM emissions. However, the EGR system has a trade-off between NOx and PM emissions at high loads. In the present study, engine dynamometer experiments have been performed to investigate the heat exchange effectiveness of EGR coolers with shell & tube-type and stack-type. The results show that the heat transfer effectiveness of the stack-type EGR cooler is 25–50 % higher than that of the shell & tube type due to an increased surface area and a better mixing of the exhaust gas flow.
引用
收藏
页码：361 / 366
页数：5
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