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Enhancement of natural convection heat transfer from an inclined heated plate using rectangular grids

✍ Scribed by Shigeyuki Sasaki; Noriyuki Ashiwake

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
193 KB
Volume
31
Category
Article
ISSN
1099-2871

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✦ Synopsis

Abstract

The effect of an inclination angle on the natural convection heat transfer from an inclined heated plate with rectangular grids is investigated. Heat transfer coefficients are measured in air when the plates are inclined at angles from βˆ’30 to +60 from a vertical plane, grid heights are in the range of 5 to 10 mm, and diagonal lengths of the grid are 25, 50, 100, and 200 mm. For each configuration, the surface heat flux ranges from 50 to 200 W/m^2^. It is found that the rectangular grids increase local heat transfer coefficients when the grids are applied to an inclined plate. The rectangular grids increase the average heat transfer coefficients along the horizontal centerline of the plate by up to 20% compared to those coefficients of a smooth plate, even when the angles of inclination are Β±30Β° Β© 2002 Wiley Periodicals, Inc. Heat Trans Asian Res, 31(5): 408–419, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/htj.10043

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