This study aimed to improve the heat concentration of hot-dip galvanizing kettle in the galvanizing process of Union Galvasteel Corporation.
The study proposed three alternative solutions focused on the two concepts of heat transfer that could improve the heat concentration of the galvanizing kettle. For the insulation, the study concentrated on the reduction of heat loss by improving the insulating capacity of the galvanizing furnace. For the heat absorption of the galvanizing kettle, the study focused on the thermal conductivity of the material. Increasing the thermal conductivity helped in the heat absorption of the kettle. The heat from the burners could be easily absorbed and this could result to a lower temperature which would be needed in the combustion chamber. With this, the heat given by the burners could now be utilized.
Findings revealed that the heat concentration in the galvanizing furnace depends on the level of insulation available and/or in the level of heat absorption of the galvanizing kettle.
The study recommended three alternative solutions: Alternative No. 1 – increasing the thickness of Insulating Chaol from 50 mm to 115 mm; Alternative No. 2 – replacement of the galvanizing kettle; and Alternative No. 3 – replacement of 64 mm fireclay and high alumina SK34 with 115 mm firebrick insulator B1. It was found out that alternative no. 1 is the best option in addressing the problem on fuel consumption in the galvanizing process. The assumed cost is lower than other alternatives and the design computation results to the improvement of the heat concentration of hot-dip galvanizing kettle in the galvanizing process of Union Galvasteel Corporation.