Predicted & Measured Glass Surface Temperatures In An Industrial, Regeneratively Gas-Fired Flat Glass Furnace

This study reports optically measured glass surface temperatures along the furnace centre-line in the combustion space of a sideport, 455 metric t/d industrial gas-fired flat glass furnace. The measurements were made using a water-cooled two-colour pyrometer inserted through holes in the crown at six locations along the length of the furnace. The average temperatures were found to rise from a low near 1700K near the batch blanket to a peak of around 1900K, then drop to a level of 1800K. Evidence of batch islands or "logs" is observed in the surface temperature data collected at the measurement location of nearest the batch blanket.