Abstract :
An experimental investigation has been carried out for a range of system and operating parameters in order to analyse effect of artificial
roughness on heat transfer and friction in solar air heater duct having protrusions as roughness geometry. An increase in heat transfer
and friction loss has been observed for duct having roughened absorber plate. Experimental data have been used to develop Nusselt
number and friction factor correlations as function of system and operating parameters for predicting performance of the system having
investigated type of roughness geometry.
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