Energy conservation through silicon carbide 'ENECOAT' of higher emissivity

The study of emissivity of kiln linings and utilsing emissivity for energy conservation has received a lot of attention in recent years. It is complementary to the use of low density high insulation value materials such as low density refractory insulation bricks and cermic fibre. We have known that emissivity depends on the temperature and nature of the material employed. It is also known that emissivity drops with increasing temperature. Recent research has been directed at the study of using high emissivity coatings on ceramic fibre aimed at increasing its mechanical strength and emissivity. Silicon Carbide has been known to possess a high emissivity. A coating based on Silicon Carbide was applied on different insulating materials and the infrared radiation emitted from such treated surfaces measured. These studies revealed that the treated surfaces had a far greater emissivity than untreated surface. (orig.)