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TECHNICAL PAPERS: Extended Surfaces

Performance of Rectangular Fin in Wet Conditions: Visualization and Wet Fin Efficiency

[+] Author and Article Information
Yur-Tsai Lin, Kuei-Chang Hsu

Department of Mechanical Engineering, Yuan-Ze University, Taoyuan, Taiwan

Yu-Juei Chang, Chi-Chuan Wang

Energy & Resources Laboratories, Industrial Technology Research Institute, Hsinchu, 310, Taiwan

J. Heat Transfer 123(5), 827-836 (Apr 02, 2001) (10 pages) doi:10.1115/1.1391275 History: Received June 26, 2000; Revised April 02, 2001
Copyright © 2001 by ASME
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References

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Coney,  J. E. R., Kazeminejad,  H., and Sheppard,  C. G. W., 1989, “Dehumidification of Turbulent Air Flow Over a Thick Fin: An Experimental Study,” Proc. Inst. Mech. Engrs, J. of Mechanical Engng. Sci, 203, pp. 177–188.
Coney,  J. E. R., Sheppard,  C. G. W., and El-Shafei,  E. A. M., 1989, “Fin Performance With Condensation From Humid Air: A Numerical Study,” Int. J. Heat Fluid Flow, 10, pp. 224–231.
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Hong, T. K., and Webb, R. L., 1996, “Calculation of Fin Efficiency for Wet and Dry Fins,” ISSN 1078-9669,2 , No. 1, pp. 27–41.
Salah El-Din,  M. M., 1998, “Performance Analysis of Partially-Wet Fin Assembly,” Appl. Therm. Eng., 18, pp. 337–349.
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Figures

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Schematic of experimental setup
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Enlarged view of the test section
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(a) Droplet formation on a fin with RHin=50 percent,TDB,in=27°C,Fs=3 mm,Tfb=9°C; (b) droplet formation on a fin with RHin=70 percent,TDB,in=27°C,Fs=3 mm,Tfb=9°C; and (c) droplet formation on a fin with RHin=90 percent,TDB,in=27°C,Fs=3 mm,Tfb=9°C.
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(a) Variation of dimensionless temperature for TDB,in=27°C,RHin=50 percent; (b) variation of dimensionless temperature for TDB,in=27°C,RHin=70 percent; and (c) variation of dimensionless temperature for TDB,in=27°C,RHin=90 percent.
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Effect of the dry bulb temperature on the dry and wet fin efficiency
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Effect of relative humidity on the dry and fully wet fin efficiency
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Effect of inlet relative humidity on the partially wet surface
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Effect of fin base temperature on the fully wet efficiency

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