Heat Transfer Performance Analysis and Optimization of Exhaust Gas Recirculation Cooler with Different Structural Characteristics

Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_IJE-33-10_028

تاریخ نمایه سازی: 6 اردیبهشت 1400

Abstract:

In order to improve the heat transfer performance of an exhaust gas recirculation (EGR) cooler, different structural characteristics are numerically and experimentally studied. In numerical analyses, the presented pitted tube model and inner fin model, are compared under two typical working conditions, heat transfer efficiency solutions of inner fin model were ۳~۵% higher than that of pitted tube model. The inner fin model also gives smaller gas side pressure drop, which is only ۱۷% of the pitted tube model. Then, the structural optimization of the inner fin model by analysing the various amplitude A was investigated. It is shown that increasing A results in increment of heat transfer efficiency and gas side pressure drop, the temperature requirement is satisfied and pressure drop is minimized when A=۰.۹ mm. The optimized numerical heat transfer efficiency solutions were ۸۶.۴% and ۸۴%, and experimental results were ۸۸.۵% and ۸۶.۳% corresponding to working conditions, respectively. A good agreement was obtained. The optimized inner fin structure can be used efficiently to improve the heat transfer performance for an EGR cooler, the study method has been proven to be feasible by the simulations and experiments.

Keywords:

Exhaust Gas Recirculation Cooler , heat transfer , Fluid Simulation , Structural Optimization

Authors

C. H. Liu

College of Automobile and Transportation Engineering, Liaoning University of Technology, Jinzhou, China

S. C. Li

College of Automobile and Transportation Engineering, Liaoning University of Technology, Jinzhou, China

C. Liu

Jinzhou Liansheng Automobile Parts Co., Ltd., Jinzhou, China

J. Shi

College of Automobile and Transportation Engineering, Liaoning University of Technology, Jinzhou, China

D. M. Zhang

BMW Brilliance Automotive Ltd., Shenyang, China

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