Material Selection for Heat Insulation
Material Selection for Heat Insulation The selection of insulating material is depend on the properties of material such as thermal resistance, heat capacity, density and thermal conductivity. The purpose of insulation is to ensure is to avoid the heat from radiating away and also to improve the working environment condition. Generally, insulation idea is approach by the heat capacity of material and the existing of pocket air , air has lower thermal conductivity than solid and the stagnant air has low convection air coefficient in the absence of bulk movement flow of fluid. (1) Mineral Rock Form by spun molten glass, stone, ceramic fiber into fiber structure. (2) Calcium Silicate Form by react polyol (alcohol with two or more hydroxyl group) with polymeric isocyanate. (3) Fiber Glass Form by finely woven silicon, glass powder and tiny shards of glass spun into microfibers. (4) Polyurethane Foam Form by react methylene diphenyldiisocyanate (MDI) and...