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The goal of this study determine the materials that can be used as conductive and insulator coating materials and coating process to increase performance solar flat plate collector. The solar flat plate collector consists of a transparent cover, absorber plate, heat exchanger tube, and frame. The absorber plate, the part absorbs solar radiation that be used for heating the water flowing in the heat exchanger and water tank. To increase performance, the solar collector must increase the absorptivity and thermal conductivity of the plate absorber from the side that receives the sun's radiation and increase the insulation on the other side of the plate. The use of ceramic materials in coatings improves thermal conductivity and insulation. The materials that are used to increase thermal conductivity are: graphene, graphite, carbon nanotube, diamond, aluminum nitride, boron nitride. The carbon family have thermal conductivity higher from other coating materials. The graphene consider higher thermal conductivity coating material can be used. The ceramic materials have thermal insulation higher from other insulation coating materials. The yttria stabilized zirconia (YSZ) and Lanthanum Zerconate consider higher thermal insulation. The materials used to develop collector performance can be mixed with polymer material to increase the homogeneity and adhesion of the coating mixture without affecting coating specifications. The tests that work on coating materials are: X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Atomic force microscopy (AFM), Fourier transmittance infrared spectrophotometer (FTIR), Thermal conductivity, Adhesion strength, Coating thickness, Ultraviolent (U.V), Porosity, Density, Thermal analysis. [ABSTRACT FROM AUTHOR]

Conventional energy sources are typically expensive and insufficient to provide a wide range of energy demands, owing to rising manufacturing and household usage. The ceramic materials employed in this study to improve thermal conductivity performance include graphite and copper powder because the carbon covering has a larger absorptivity; it traps a wider range of light wavelengths and reduces reflectivity. The results showing from thermal conductivity test for samples coated with graphite coating increased about 60% while the sample that be coated with ratios of copper powder and graphite material the thermal conductivity increase about 80% from bare aluminum plate. Spray air brush coating was employed in this project, and the absorber plate was made of aluminum alloy. X-ray diffraction X-R-D, scanning electron microscope SEM, atomic force microscope AFM, thermal conductivity TC, adhesion strength, density, coating thickness and ultraviolet UV are the tests used to investigate and guarantee the findings. The goal of this project is to demonstrate how to improve the efficiency of a solar flat plate collector by coating the absorber plate with ceramic coating materials to increase thermal conductivity on the side that faces to the sun. [ABSTRACT FROM AUTHOR]