Effects of Variation in Root Temperature on Heat Lost from a Thermally Non-Symmetric Fin
A discussion of the variation of the heat lost from a fin is presented the root temperature of which is T = Tw + a cosm (?y'/21), 0 ? m ? 5, and surface convection coefficients of which are constant but unequal. The range of parameters are 0 ? B2 ? b1 ? l, B1 = 0.01, 0.1, 1.0 where B1 and B2 are the Biot numbers of the top and bottom surfaces, respectively. A fin justification criterion (fin heat loss greater than or equal to three times the no-fin heat loss) is used to discuss fin effectiveness. The results are (1) the heat lost from the fin decreases as m increases, a > 0; (2) tip Biot number is not an important factor in heat lost for large B1 and B2 and (3) as a increases (m constant) the heat lost increases almost linearly.
D. C. Look and H. S. Kang, "Effects of Variation in Root Temperature on Heat Lost from a Thermally Non-Symmetric Fin," International Journal of Heat and Mass Transfer, Elsevier, Jan 1991.
The definitive version is available at http://dx.doi.org/10.1016/0017-9310(91)90016-8
Mechanical and Aerospace Engineering
Article - Journal
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