Journal of Enhanced Heat Transfer Theory and Application in High Performance Heat and Mass Transfer

ISSN for PRINT: 1065-5131

For Online Access

Best Paper Award Selection - Editorial Board Site

2005, Volume12

Issue 3

81 pages

DOI: 10.1615/JEnhHeatTransf.v12.i3

Issue price - $138.00

Rong-Hua Yeh
Department of Marine Engineering, National Taiwan Ocean University, Keelung, 20224, Taiwan, Republic of China

Shih-Pin Liaw
Department of Mechanical and Mechatronic Engineering, National Taiwan Ocean University

Jan-Yih Hong
China Technical Consultants Inc.

This paper theoretically and experimentally investigates single cylindrical pin fins subject to a pool of saturated isopropyl alcohol. Initially, a two-dimensional steady-state conduction equation is solved numerically to obtain the temperature distribution and base heat flux of a fin. Copper fins with a diameter of 25 mm and lengths of 40, 55, 70, and 85 mm in boiling liquid are studied. In addition, both heating and cooling processes and fins with or without insulated tips are taken into considerations. The result show that hysteresis effects are more pronounced for longer fins at a fixed diameter. Also, both burnout and film-collapse superheats are higher for a longer fin. The critical temperatures for fins with heat transfer at a tip are higher than those with adiabatic fin tips. The same phenomena are observed in a subsequent boiling experiment. Finally, the predicted temperatures and heat fluxes of fins compare with experimental data.

DOI: 10.1615/JEnhHeatTransf.v12.i3.10 Download article, 225-237 pages

Article price - $35.00

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