Thermal conductivity of glasses at various temperatures Junjie Chen Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China Glass is a non-crystalline, often transparent amorphous solid, that has widespread practical, technological, and decorative use in, for example, window panes, tableware, and optics. Glass is most often formed by rapid cooling of the molten form; some glasses such as volcanic glass are naturally occurring. The most familiar, and historically the oldest, types of manufactured glass are "silicate glasses" based on the chemical compound silica, the primary constituent of sand. The term glass, in popular usage, is often used to refer only to this type of material, although silica-free glasses often have desirable properties for applications in modern communications technology. Some objects, such as drinking glasses and eyeglasses, are so commonly made of silicate-based glass that they are simply called by the name of the material. Thermodynamic temperature (degrees kelvin), Thermal conductivity (watts per meter-kelvin) 297 1.35 300 1.34 306 1.39 319 1.42 322 1.59 322 1.45 329 1.43 330 1.56 332 1.66 336 1.68 345 1.91 356 1.9 273.2 1.11 323.2 1.16 373.2 1.22 423.2 1.27 473.2 1.33 523.2 1.38 573.2 1.43 100 0.58 200 0.9 300 1.11 400 1.25 500 1.36 600 1.5 700 1.62 800 1.89

Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China