Spectrally Tuned Emissivity Surfaces For Optimal Glass Heating And Bending

Radiation furnaces typically heat products by electrically heating wires or elements that then emit radiation with some spectral distribution. The energy emitted over a given wavelength range is a function of the temperature of the material and its . Heating inefficiencies occur when the spectral emissivity of a heating element and a substrate are not well matched. The presence of a low emissivity coating on a glass substrate presents additional challenges.