JP Journal of Heat and Mass Transfer
Volume 15, Issue 1, Pages 93 - 123
(February 2018) http://dx.doi.org/10.17654/HM015010093 |
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DEVELOPMENT OF CORRELATIONS OF HEAT TRANSFER AND FLUID FLOW CHARACTERISTICS FOR THREE SIDES ARTIFICIALLY ROUGHENED SOLAR AIR HEATERS
Ashwini Kumar, B. N. Prasad and K. D. P. Singh
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Abstract: A novel investigatory work for the flow region has been carried out for the results of heat transfer fluid flow characteristic factor in three sides artificially roughened and glass covered solar air heater, simultaneously with three sides glass covered smooth ones. The effects of relative roughness height and relative roughness pitch on Nusselt number and friction factor have been studied, covering the Reynolds number range of 4000-20000, for a fixed duct aspect ratio of 8. Based on the experimental results, correlations of Nusselt number and friction factor have been developed as a function of flow and roughness parameters. |
Keywords and phrases: Nusselt number, friction factor, roughness Reynolds number, Reynolds number, three sides artificial roughness. |
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