Abstract
Energy consumption tests have been completed on a Radiant Tube Box (RTB) furnace which has a fibrous insulation. On this furnace an average of 9.7% of the energy used in processing parts with the conventional endothermic atmosphere practice was saved using nitrogen based atmosphere systems. Furthermore, the natural gas required at the heat treating facility to process the parts was reduced an average of 28.7%. Energy consumption of the furnace while idling under a methanol atmosphere was determined. When combined with the earlier reported data on endothermic and pure nitrogen atmospheres, a linear relationship between energy consumption and hydrogen concentration of the furnace atmosphere was found.
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