Optimization of a Graphite Tube Blackbody Heater for a Thermogage Furnace

Springer Netherlands
Publication Type:
Journal Article
International Journal of Thermophysics, 2008, 29 (1), pp. 386 - 394
Issue Date:
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Design modifications are presented for a 289-mm long, 25.4-mm inner diameter blackbody heater element of a 48 kW Thermogage blackbody furnace, based on (i) cutting a small âheater zoneâ into the ends of the tube and (ii) using a mixture of He and Ar or N2 to âtuneâ the heat losses and, hence, gradients in the furnace. A simple numerical model for the heater tube is used to model and optimize these design changes, and experimental measurements of the modified temperature profile are presented
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