대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제32권10호
  • /
  • Pages.769-775
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  • 2008
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  • 1226-4881(pISSN)
  • /
  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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디젤 자동차용 딤플 사각 튜브형 EGR Cooler 의 열교환기 효율에 관한 연구

Study on Heat Exchanger Efficiency of EGR Cooler with Dimpled Rectangular Tube Shape for Application of Diesel Vehicles

  • 서영호 (부산대학교 대학원 항공우주공학과) ;
  • 허성찬 (부산대학교 대학원 항공우주공학과) ;
  • 구태완 (부산대학교 항공우주공학과) ;
  • 송우진 (부산대학교 산학협력단) ;
  • 김정 (부산대학교 항공우주공학과) ;
  • 강범수 (부산대학교 항공우주공학과)
  • 발행 : 2008.10.01
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초록

In this study, the investigations on the dimpled type Exhaust Gas Recirculation (EGR) cooler have been focused on the high heat exchanger efficiency. To overcome low heat exchanger efficiency of general EGR cooler, the dimpled type EGR cooler was developed. It was ensured the improvement of the performance of the dimpled type EGR cooler related to the heat exchange based on a series of the experiment. These results were caused by the increase of thermal surface area in accordance with the dimple's one. The estimation model of the heat exchanger efficiency using the Effectiveness-NTU method was also developed in order to verify the validity of experimental result. Also, the program for the estimation of the heat exchanger efficiency on the EGR cooler with regard to the dimpled tube shape was developed. Resultantly, it was confirmed that the dimpled type EGR cooler could be served better performance than the conventional one in view of the heat exchanger efficiency.

키워드

참고문헌

  1. Kim, C. H., Lee, J. H., Chun, K. M., Lee, K. S., 2000, “Prediction of Nitric Oxide Formation Using a Two Zone Model in a DI Diesel Engine,” Trans. of the KSME (B), Vol. 24, No. 3, pp. 390-401
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