Calculation of Temperature Distributions in Glass Plates Undergoing Heat‐Treatment

Abstract

A method is presented for calculating temperature distributions in diathermanous sheets that are being heated or cooled. It differs from previous calculations of this type in that it takes a more comprehensive account of radiative effects that play a part in these processes. Principally, these effects are the penetration of external radiation into the sheet, the emission and partial re‐absorption of radiation within the sheet, and multiple internal reflection between the surfaces of the sheet. A high‐speed digital computer has been programmed to perform these calculations. The results of a few representative examples are presented to illustrate the influence of diathermancy on the thermal history of glass plates undergoing various heat‐treatments.