On optimum spines
- Natl Taiwan Ocean Univ, Keelung, Taiwan (China)
This article presents the optimum dimensions and heat transfer characteristics of spines for cylindrical, convex parabolic, conical, and concave parabolic profiles. With a derived solution form, the optimum base diameter, length, heat dissipation, temperature profile, and efficiency of spines are obtained by fin parameter and tip temperature. The temperature-dependent heat transfer coefficient is assumed to be a power-law type. It is found that the optimum dimensions of a spine are functions of fin volume, heat transfer coefficient at fin base, and thermal conductivity. For a fin with least material, the optimum conditions are also obtained. It shows that the results are solely related to the heat transfer mode on the fin surface. To facilitate the thermal design of heat transfer components, simple mathematical expressions as well as design charts are presented. 15 refs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 101975
- Journal Information:
- Journal of Thermophysics and Heat Transfer, Journal Name: Journal of Thermophysics and Heat Transfer Journal Issue: 2 Vol. 9; ISSN 0887-8722; ISSN JTHTEO
- Country of Publication:
- United States
- Language:
- English
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