Abstract

The convective heat transfer on the outer surface of tube arrays perpendicular to the flow direction was experimentally investigated. The test sections which include the aligned and staggered arrangements were made and the local heat transfer coefficients on the outer surface of the tube were measured after the flow has been fully developed. The results showed that the local heat transfer coefficients of the staggered arrangement, which has transverse pitch of 0.075 m and longitudinal pitch of 0.08 m, were about 15% greater than that of the aligned arrangement. Also, the overall mean Nusselt number of the former was greater than that of the latter. It is verified that the results obtained by using the simulation show the same tendency with those of experiment.

주제어

#대류 열전달   #정렬배열   #엇갈림 배열   #열전달계수   #열유속  

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참고문헌 (5)

1. Martin, A. R. and Saltiel, C., 1988, Frictionlosses and convective heat transfer in sparse, periodic cylinder arrays in cross flow, Int. J. Heat Mass Transfer, Vol. 41, pp.2383-2397 
2. Buyruk, E. and Jonhson, M. W., 1988, Numerical and experimental study of flow and heat transfer around a tube in cross-flow at low Reynolds number, Int. J. Heat and Fluid Flow, pp. 223-232 
3. Debusschere, B., 1998, Measurement of friction, heat transfer, and mass transfer in a severely outgassing tube banks, Int. J. Heat and Fluid Flow, pp. 3015-3024 
4. Giedt, W. H., 1949, Local Nusselt number for airflow normal to a circular, Trans, ASME, Vol. 71, pp.375-380 
5. Zhukauskas, A., 1985, Heat Transfer of a Cylinder flow, Hemisphere Publishing Co 

이 논문을 인용한 문헌 (1)

1. Han, Hwa-Taik ; Shin, Dong-Sin ; Choi, Chang-Ho ; Lee, Dae-Young ; Kim, Seo-Young ; Kwon, Yong-Il 2008. "Recent Progress in Air Conditioning and Refrigeration Research: A Review of Papers Published in the Korean Journal of Air-Conditioning and Refrigeration Engineering in 2006" 설비공학논문집 = Korean journal of air-conditioning and refrigeration engineering, 20(6): 427~446  원문보기 상세보기