In a tableware glass manufacturing facility, the furnace flue gases are directed to a recuperator type chimney, which serves to preheat the combustion air.
Measurements showed that the chimney insulation is detiorated at several locations, and the temerature of flue gases exiting the chimney is relatively high. Maintaining and fixing the chimney insulation serves in increasing the efficiency of the recuperator to preheat the combustion air, leading to increase in the combustion efficiency, saving on energy consumption.