Characteristics of temperature changes and stress of float glass under heat radiation

Abstract

This study aims to evaluate results of radiant heat transfer on float glass surface, where radiant heat and convection rate are distributed from initial glass heating to the maximum or final temperature of the float glass using varied temperature and thickness by means of Mecway FEA simulation. This research also seeks to measure thermal stress on float glass with thickness of 4-19mm. To calculate the rates of heat transfer occurring by conduction, it is assumed that with exposure to heat of 200-600°C for 20 minutes and temperature of about 32°C, the simulation distributes radiation temperature with maximums of 160.2-395.5°C. Results show overprediction of thermal change based on validation from prior experiments. In this study an initial crack took place around the edge of the glass frame, where the float glass underwent heat stress to maximums of 34.69-33.10 MPa. The focus of this study is to identify the characteristics of the float glass used in this and previous research under heat treatment with varied thickness and temperature.