Performance Analysis of Box-type Solar Cooker with New Selective Coatings

Abstract

Abstract This paper offers a thorough experimental investigation of how applying selective coatings can enhance the performance of solar cookers in the box type. The application of black chrome on galvanized steel and black nickel on nickel-plated steel is given special attention. The results of the study show that the Black Nickel coating retains heat better than the Black Chrome coating because of its lower emissivity. When there is a large load, effective heat transfer from the absorber plate to the pot is quite important. Graphical examination of the temperature profiles indicates that when there is no load, the Black Nickel coating resulted in absorber plate temperatures ranging from 162-168°C, whereas the Black Chrome coating reached temperatures of 155-159°C. Under a load, the temperature of the absorber plate coated with Black Nickel ranged from 150-153°C, whereas the Black Chrome coating resulted in temperatures of 144-147°C. The findings align with the cooking pot temperatures, showing that the Black Nickel coating consistently outperformed the Black Chrome coating by obtaining higher temperatures in both loaded and unloaded circumstances. The ability of these coatings to swiftly attain greater temperatures is demonstrated by this research, which enhances the solar cooker’s efficiency both with and without a load. The findings represent a significant improvement in solar cooker technology since they offer a cost-effective and sustainable substitute for locations with sufficient sunshine.