US scientists have utilized a nanochannels device to cool down the operating temperature of a commercial PV module and have found that the proposed technique is able to improve power yield by up to 32.8%. Spray droplets are dispersed over the nanochannels device in order to eliminate the need for a continuous supply of a coolant.
 and 20 μm (Case 2) achieved earlier. “The amount of heat flux removal during such a process is found to be dependent on the surface temperature.”</p><p>The final steady-state temperature of the proposed two cases was found to be 30.5 C and 20 C, respectively, which compares to 51.5 C for a reference solar module without any cooling. “Clearly, the finer spray droplets in Case 2 provide a higher heat flux dissipating ability and exhibit a greater extent of PV panel cooling approaching the theoretical limit,” the US group emphasized. “The enhancement in Case 2 as compared to Case 1 also aligns well with the finding in terms of the heat transfer coefficient, thus reiterating the significance of the reported technique of PV panel cooling.”</p><p>For Case 2, the average cooling was found to be of up to 31 C and the overall enhancement in the electrical power yield to be 32.8%. No information was provided on the costs of the proposed device nor on its commercial viability.</p><p>The technique was introduced in the study <a href=)
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