대한설비공학회:학술대회논문집 (Proceedings of the SAREK Conference)
- 대한설비공학회 2007년도 동계학술발표대회 논문집
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- Pages.185-190
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- 2007
스크린을 이용한 직교류 열교환기의 열전달 촉진에 관한 연구
An Experimental Study on Heat Transfer Enhancement of Cross Flow Heat Exchanger Using Screen
- Yoo, Seong-Yeon (Department of Mechanical Design Engineering, Chungnam National University) ;
- Jang, Kwang-Il (Graduate School, Chungnam National University) ;
- Kwon, Hwa-Kil (Mechanical Engineering Reasearch Institute, Korea Advanced Institute of Science and Technology)
- 발행 : 2007.11.30
초록
For the successful design of heat exchangers, it is very important to understand local heat transfer characteristics on the circular cylinder of the cross flow heat exchangers. In this study, the heat exchanger using screen is developed to enhance heat transfer. The naphthalene sublimation technique is employed to measure the local heat transfer coefficients in the heat exchanger. The experiments are performed for single circular tube, in-line array tube bank with and without heat transfer promoter. Local Nusselt numbers of single circular tube and tube bank with heat transfer promoter are investigated and compared to those of without heat transfer promoter.
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