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Concurrent calorimetric and interferometric studies of steady-state natural convection from miniaturized horizontal single plate-fin systems and plate-fin arrays |
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| Authors: | Filino Harahap Herry Lesmana Poetro Lebdo Sambegoro |
| Affiliation: | 1. Thermal Engineering Laboratory, Faculty of Mechanical and Aerospace Engineering, Institute of Technology of Bandung (ITB), Jl Ganesha 10, Bandung, 40132, Indonesia 2. GroundProbe Pty Ltd, 8 Hockings St., South Brisbane, QLD, 4000, Australia 3. Mechanical Engineering Department, MIT, Cambridge, MA, USA |
| 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?2 K?1 for single fin systems and by 1.8 times to 18 W m?2 K?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. |
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