Heat exchanger design: Optimal thickness (under natural convective conditions) of vertical rectangular fins protruding upwards from a horizontal rectangular base

Chun Wah Leung, S. D. Probert

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)


Steady-state rates of heat transfer from an array of vertical, rectangular polished duralumin fins under natural convective conditions have been measured. The horizontal base, which was manufactured of the same material, was kept at the uniform temperature of either 20·0 (±0·2)°C or 40·0 (±0·2)°C above the local air temperature of 20 (±0·2)°C. The optimal thickness of the fins in this array, corresponding to a maximum rate of heat dissipation, was deduced. For a base of width 190 mm and length 500 mm, the optimal thickness for fins of 60 mm protrusion rose from 2·0 mm to 4·5 mm when the fin separation was increased from 20 mm to 60 mm. This optimal fin thickness was almost invariant with respect to the change of the considered base temperature.
Original languageEnglish
Pages (from-to)299-306
Number of pages8
JournalApplied Energy
Issue number4
Publication statusPublished - 1 Jan 1988

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Energy(all)

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