Abstract
A review of studies focused on promoting the rate of heat transfer with the help of an optimum rise in friction factor, by offering a simulated irregularity to the interior surface of the absorber plate of SAH, is expressed. In this article an effort has been made to explore different coarseness configurations as used by number of researchers to boost the SAH heat transfer rate. Furthermore, different correlations developed by researchers for Nusselt number and friction factor are also presented. On the basis of these correlations, thermohydraulic performance variable was calculated and attributed for various coarseness configurations. Friction factor and Colburn factor of various coarseness configurations have also been compared and presented. This review focused on use of different coarseness configurations with different coarseness parameter and flow parameter is deeply discussed from which future researchers can easily identify that which coarseness is to be used for designing SAH duct for the better augmentation of heat transfer and friction factor. It also helps the researchers to determine the optimum value of coarseness parameter so that the SAH works efficiently and effectively.
Highlights
Energy is an essential need to carry on with our everyday life at a cost of some significant things, for example, condition debasement by utilizing fossil powers
Multiple arc shape ribs Singh et al [55] have been examined the consequence of multiple arc shapes ribs attached to the undersurface of the absorber plate for the augmentation of heat transfer and friction factor in solar air heater (SAH)
This article presented the detailed study of different artificial coarseness configuration used by various investigators in SAH
Summary
Energy is an essential need to carry on with our everyday life at a cost of some significant things, for example, condition debasement by utilizing fossil powers. Multiple arc shape ribs Singh et al [55] have been examined the consequence of multiple arc shapes ribs attached to the undersurface of the absorber plate for the augmentation of heat transfer and friction factor in SAH. Multiple arc shape ribs with gap Pandey et al [57] have been examined the consequence of multiple arc shape with gap attached to the undersurface of the absorber plate for the augmentation of heat transfer and friction factor in rectangular channel. Saini and Verma [59] have been examined the consequence of dimple-shape coarseness and stream variables on heat transfer and friction factor in SAH. Multiple v dimple arrangement Kumar et al [62] have been examined the consequence of multiple Vdimple-shape coarseness and stream variables on heat transfer and friction factor in SAH.
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