Thermal conductivity of glass

Glass is a poor conductor of heat, its thermal conductivity is low, mainly in the range of 0.712~1.340W/ (m·K), mainly determined by the chemical composition of the glass, temperature and color. The thermal conductivity of glass is one of the very important parameters, which is required in kiln design, glass mold design, glass production process balance and so on. The thermal conductivity increases with the increase of temperature, and the λ of ordinary glass is about doubled when it is heated to the softening point, which can be calculated by the following formula for 3.3 high borosilicate glass. λ=A+BlgT formula: A -- -0.003523;