Browse > Article
http://dx.doi.org/10.5293/kfma.2013.16.6.040

A Numerical Study on the Effect of Fin Pitch and Fin Array on the Heat Transfer Performance of a Pre-heater  

Yoo, Ji Hoon (Graduate School, Department of Aerospace Engineering, Pusan National University)
Kim, Kuisoon (Department of Aerospace Engineering, Pusan National University)
Publication Information
The KSFM Journal of Fluid Machinery / v.16, no.6, 2013 , pp. 40-47 More about this Journal
Abstract
In this paper, a numerical study was performed to investigate the performance characteristics of a pre-heater. The effects of fin pitch and fin array type(in-line, staggered, leaned array) were reported in terms of Colburn j-factor and Fanning friction factor f, as a function of Re. Three-dimensional numerical simulation has been performed by using flow analysis program, FLUENT 13.0. The results show that Colburn j-factor decreases with the decrease of fin pitch attached in the annular tube. But the fin pitch has little effect on f-factor. The staggered array and leaned array show improved heat transfer performance compared with in-line array, so that Colburn j-factor was increased. It also shows that the f-factor of leaned array is the highest in the studied range of Reynolds number.
Keywords
Pre-heater Boiler; Internally-finned Tube; Fanning friction Factor; Colburn j Factor; Pressure Drop;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Liu, X. and Jensen, M. K., 2001, "Geometry Effects on Turbulent Flow and Heat Transfer in Internally Finned Tubes," ASME Journal of Heat Transfer, Vol. 123, pp. 1035-1044.   DOI   ScienceOn
2 Asharful Islam, Md. and Mozumder, A. K., 2009, "Forced Convection Heat Transfer Performance of an Internally Finned Tube," Journal of Mechanical Engineering, Vol. ME 40, No. 1, pp. 54-62.
3 이주희, 이상환, 임효재, 박경우, 2005, "내부휜이 부착된 원형관 열교환기의 열/유동 해석 및 최적설계," 대한기계 학회논문집 B권, 제 29 권, 제 4 호, pp. 460-468.   과학기술학회마을   DOI   ScienceOn
4 Ma, T., Lin, M., Zeng, M., Ji, Y. P., Wang, Q. W., 2010, "Numerical Study of Internally Finned Bayonet Tubes in a High Temperature Bayonet Tube Heat Exchanger with Inner and Outer Fins," ASME Turbo Expo 2010, GT2010-22360.
5 Wang, Q. W., Lin, M., Zeng, M., 2009, "Effect of Lateral Fin Profiles on Turbulent Flow and Heat Transfer Performance of Internally Finned Turbs," Applied Thermal Engineering, pp. 3006-3013.
6 Tian, L., Wang, Q. W., Xie, G. N., Zhao, C. L., and Luo, L. Q., 2008, "Convective Heat Transfer and Pressure Drop of Annular Tubes with Three Different Internal Longitudinal Fins," Heat Transfer-Asian Research, 37 (1), pp. 29-40.   DOI   ScienceOn
7 Incropera, F. P., DeWitt, D. P., 2007, "Fundamentals of Heat and Mass Transfer," Wiley Press.
8 Pak, H. Y., Park, K. W. and Choi, M. S., 1998, "Numerical Analysis of the Flow and Heat Transfer Characteristics for Forced Convection-Radiation in Entrance Region of an Internally Finned Tubes," KSME International Journal, Vol. 12, No. 2, pp. 310-319.   DOI