Performance enhancement of a baffle-cut heat exchanger of exhaust gas recirculation

被引：52
作者：
E, Jiaqiang [1 ,2 ,5 ]
Han, Dandan [1 ,2 ]
Deng, Yuanwang [1 ,2 ,5 ]
Zuo, Wei [1 ,2 ]
Qian, Cheng [3 ]
Wu, Gang [4 ]
Peng, Qingguo [1 ,2 ]
Zhang, Zhiqing [1 ,2 ]
机构：
[1] Hunan Univ, State Key Lab Adv Design & Mfg Vehicle Body, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ, Coll Mech & Vehicle Engn, Changsha 410082, Hunan, Peoples R China
[3] Jiaxing Univ, Coll Mech & Elect Engn, Jiaxing 314001, Zhejiang, Peoples R China
[4] Changsha Univ Sci & Technol, Coll Automot & Mech Engn, Changsha 410114, Hunan, Peoples R China
[5] Hunan Univ, Inst New Energy & Energy Saving & Emiss Reduct Te, Changsha 410082, Hunan, Peoples R China
来源：
APPLIED THERMAL ENGINEERING | 2018年 / 134卷
基金：
中国国家自然科学基金;
关键词：
Baffle-cut heat exchanger; Baffle cuts; Baffle arrangements; Heat transfer increment; SHELL-SIDE; HELICAL BAFFLES; THERMOACOUSTIC SYSTEM; TREFOIL-HOLE; FLOW; EGR; COMBUSTION; SIMULATION; EMISSION; OPTIMIZATION;
D O I：
10.1016/j.applthermaleng.2018.01.109
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In present investigation, a 3D numerical simulation of a baffle-cut heat exchanger of exhaust gas recirculation (EGR) in diesel engine is used to investigate its flow field and heat transfer characteristics at three different part loads. Firstly, an original shell-and-tube heat exchanger with different EGR rates is simulated as reference for latter comparisons. Then, some baffle-cut heat exchanger models with differently adjacent baffles cut in every model but same overall baffle cuts are made. Afterwards, these new ones are simulated with same conditions of original one to facilitate comparisons. The Nu/P-p is the ratio of Nu to pump power. It's taken as one evaluation criterion to indicate comprehensive performance enhancement of new models which is increased with the increase of EGR rates and higher than original one.
引用
收藏
页码：86 / 94
页数：9
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