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A Ceramic Waste Heat Recovery System on a Rotary Forge Furnace: An Installation and Operating History
Abstract
In the fall of 1980, the Reed Rock Bit Company (Houston, Texas) placed a Hague International high temperature energy conservation system on a rotary hearth furnace used to heat steel billets for forging. The energy conservation system includes a heavy duty high temperature ceramic tube recuperator and five high temperature recirculating burners.
The energy conservation system was retrofitted onto a rotary hearth furnace with an inside diameter of 11' 5'' (3.5m) and an available hearth area of approximately 75 square feet (7m2). The system has an installed burner capacity of 3MMBtu/hr (2,345kW).
Before retrofitting, furnace thermodynamic performance data were collected. The amount of energy used to bring a mass unit of steel to forging temperature during typical heating cycles was 3,921 Btu/lb (9.12 x 106 J/kg). After in installation of the heat recovery system, the thermo dynamic performance of the improved furnace was calculated. The amount of energy used to bring a mass unit of steel to forging temperature during typical heating cycles in the retrofitted furnace was 1,798 Btu/lb (4.18 x 106 J/kg), demonstrating a fuel reduction of 54.1%
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Citation
Young, S. B.; Campbell, T. E.; Worstell, T. M. (1981). A Ceramic Waste Heat Recovery System on a Rotary Forge Furnace: An Installation and Operating History. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /94447.