This paper describes the results of mathematical modeling, burner development, & field trials carried out with oxy-gas forehearths. Mathematical modeling was carried out for the rear cooling section of a BH-F forehearth conditioning a flint glass. The modeling coupled the glass channel with the forehearth combustion space. The glass exit temperatures from this section were compared under air-gas firing & oxy-gas firing. Results indicated that for the same glass flow rates, cooling was more efficient in the centre of the channel & heating more efficient close to the sides under oxy-gas firing. The combined effect was a 30% improvement over air-gas firing in temperature spread at the exit of the cooling zone. Conversely, the model also predicted that for similar temperature spreads, oxy-gas firing would allow pull through to be increased by 30%
