Heat-exchanger design: Optimal uniform thickness of Vertical rectangular fins protruding perpendicularly outwards, at uniform separations, from a Vertical rectangular [`]Base'

C.W. Leung and S.D. Probert

Applied Energy, 1987, vol. 26, issue 2, 118 pages

Abstract: The effects of varying the fin thickness on the steady-state rate of heat loss from the fin array have been measured experimentally for free-convection conditions. The duralumin fin array had a base area of 500 mm (vertical) x 190 mm (horizontal), and the fins protruded 65 mm proud of, and perpendicularly out from, the base. The experiments were performed with five different fin thicknesses, namely 1, 3, 6, 9 and 19 mm, for base temperatures of 20·0 (±0·1)°C and 40·0 (±0·1)°C above that of the ambient environment, which was maintained at 20 (±0·2)°C. There is an average optimal uniform fin thickness equal to 3·0 ± 0·5 mm, corresponding to the maximum rates of heat loss, for the range of conditions stated when the uniform separations between the adjacent fins exceeds 20 mm. For 20 mm

Date: 1987
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