Concurrent calorimetric and interferometric studies of steady-state natural convection from miniaturized horizontal single plate-fin systems and plate-fin arrays

Filino Harahap, Herry Lesmana, Poetro Lebdo Sambegoro

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Concurrent calorimetric and interferometric studies have been conducted to investigate the effect that reduction of the base-plate dimensions has on the steady-state performance of the rate of natural convection heat transfer from miniaturized horizontal single plate-fin systems and plate-fin arrays. The effect was studied through comparison of the present results with those of earlier relevant calorimetric, interferometric, or numerical studies. Results shown that a reduction of the base-plate area by 74% increased natural convection coefficient by 1.5 times to 26.0 W m-2K-1 for single fin systems and by 1.8 times to 18 W m-2K-1 for fin arrays in the range of the base-plate temperature excess of 20-50°C. A simple correlation for the Nusselt number of miniaturized horizontal plate-fin arrays is proposed in the range of Rayleigh number divided by the number of fins to the 2.7 power from 2 × 10 to 5 × 105.

Original languageEnglish
Pages (from-to)929-942
Number of pages14
JournalHeat and Mass Transfer/Waerme- und Stoffuebertragung
Volume46
Issue number8-9
DOIs
Publication statusPublished - 1 Oct 2010
Externally publishedYes

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