Develop thermal efficiency of hot air solar selective surface to promote used solar energy for sea-food drying

Abstract

The objective of this research applying black spray color in local market, it is flat-black color, don’t mixing reflection chemical for coating solar selective surface to make up hot-air solar color. Research mythology was standard process for coating surface by spraying and testing thermal efficiency The result 1. The solar selective color and solar absorptance was 0.98 2. The surface was roughness, do not reflection solar radiation out of surface 3 . The highest thermal efficiency was 0.81 and the term of energy loss ( - FR) was18.38 W/m2.°C