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Effect of Combustion Air Preheat on a Forged Furnace Productivity
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A basic thermal analysis of a gas fired forge furnace can determine the fuel savings from exhaust energy recovery/combustion air preheat on a furnace operating at a single condition, for example, high fire. What this analysis is not able to determine are the effects of combustion air preheat on four additional furnace operating characteristics. These characteristics are: (1) fuel utilization of a furnace operating cycle; (2) time to heat the furnace load; (3) scale production; and (4) furnace uniformity. The capabilities to perform the above comparative analysis now exist within a single facility. In this facility, Solar Turbines Incorporated, under contract to the Gas Research Institute, has recently installed a newly developed high temperature metallic recuperator in a new fiber-lined furnace. This paper summarizes some preliminary test results of instrumented billets in selected gas fired furnaces.
Combustion Air Preheat
Gas Fired Furnaces
High Temperature Metalic Recuperators
Ward, M. E.; Bohn, J.; Davis, S. R.; Knowles, D. (1984). Effect of Combustion Air Preheat on a Forged Furnace Productivity. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from