Gawande, Vipin B.; Dhoble, A.S.; Zodpe, D.B. - In: Renewable and Sustainable Energy Reviews 32 (2014) C, pp. 347-378
air heaters and heat exchangers in terms of heat transfer, friction factor and flow simulation techniques. Correlations … developed for heat transfer and friction factor for different roughness geometries by various investigators in solar air heaters …