Optimization of longitudinal fins with temperature-dependent thermal parameters

Journal Article · · Heat Transfer Engineering; (United States)

DOI:https://doi.org/10.1080/01457639408939828· OSTI ID:6866955

Yeh, R H ^[1]

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1. National Taiwan Ocean Univ., Keelung (China). Dept. of Marine Engineering and Technology

The profile of the least-weight longitudinal cooling fins is obtained considering temperature dependence of thermophysical properties. A power-law-type wall heat flux is assumed on the lateral and tip surfaces of the fin. Uniform temperature is imposed at the fin base, whereas two kinds of boundary conditions at the fin tip are considered. First, a specified heat transfer rate is prescribed at the free end. Second, the outer edge of the fin is also subject to a power-law-type surface heat flux and dissipates energy to the ambient fluid. Special cases of negligible heat transfer from the fin tip and zero tip temperature are investigated. The temperature distributions and profiles of the optimum fins are calculated for various single heat transfer modes. In addition, it is shown that the fin length plays an important role in the determination of the optimum fin with minimum volume.

• OSTI ID: 6866955
• Journal Information: Heat Transfer Engineering; (United States), Journal Name: Heat Transfer Engineering; (United States) Vol. 15:3; ISSN 0145-7632; ISSN HTEND2
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
AUGMENTATION
EFFICIENCY
ENERGY TRANSFER
FINS
GEOMETRY
HEAT EXCHANGERS
HEAT TRANSFER
MATHEMATICS
THERMAL EFFICIENCY