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http://dx.doi.org/10.5762/KAIS.2011.12.10.4302

Study on Heat Exchanging Characteristics of Automobile Exhaust Heat Recirculation Device  

Hong, Young-Jun (Dept. of Mechanical Engineering, Graduate School, Kongju National University)
Choi, Doo-Seuk (Div. of Mechanical & Automotive Engineering, Kongju National University)
Jung, Young-Chul (Div. of Mechanical & Automotive Engineering, Kongju National University)
Kim, Jong-Il (Research Team Dongwon Tech. Co, Ltd R&D Center)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.12, no.10, 2011 , pp. 4302-4307 More about this Journal
Abstract
Recently, various technologies for the fuel efficiency improvement are being developed. The purpose of this study is to evaluate the heat exchanging performance of a exhaust heat recirculation device and to propose a model with optimized performance. The device has been designed to warm up engine coolant as quickly as possible using wasted exhaust heat. To achieve these goals, heat transfer characteristics has been analyzed using CFD for the flow direction effect and in/out location effect of coolant. A method improving the effectiveness of heat exchange has been proposed. As a result, the highest efficiency in heat exchange was observed on condition that exhaust heat affects the coolant directly with a separate flow path between exhaust gas and coolant and that coolant flow rate is relatively low.
Keywords
Exhaust heat recirculation device; Warm-up; Heat trnasfer characteristics; Heat exchanging efficiency; Computational fluid dynamics; Waste heat recirculation;
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  • Reference
1 Richard Stobart and Rohitha Weerasinghe, "Heat Recovery and Bottoming Cycles for SI and CI Engines-A Perspective" , 2006-01-0662, 2006
2 T. Endo, S. Kawajiri, Y. Kojima, K. Takahashi, T. Bada, S. Ibaraki, T. Takahashi, M. Shinohara, "Study on Maximizing Exergy in Automotive Engines", SAE Paper NO.2007-01-0257, 2007.
3 Lee, H. K, Heo, Y. S, Lee, D. H, Bae, S. J, Hwamg, J. S, Choung, Y. D, Lee, S. H, Kim, T. J, 2010, "Analysis of Thermal Fluid of Engine Heat Recirculation Device for Engine Fast Warm-up" Annual Conference of the KSAE pp. 266-269, 2010.
4 NIKA GmbH, "COSMOS-FloWorks User's Manual", 2007.