ボルト充填層を被加熱物とする間接型加熱炉の３次元非定常伝熱解析

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  • Three-dimensional unsteady heat transfer analysis of an indirect heating furnace with a bolts-packed work.
  • ボルト ジュウテンソウ オ ヒ カネツブツ ト スル カンセツガタ カネツロ

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To establish an accurate design method for industrial furnaces from the viewpoint of heat transfer, we carried out three-dimensional unsteady heat transfer analysis for a practical-size heat treatment furnace equipped with radiant heaters. We applied three packaged programs, STREAM, MORSE and TRUMP, to analyze a combined heat transfer problem of radiation, conduction and convection. We also carried out experiments in heating of a bolts-packed model as an actual work.<BR>We found that air flow swirled in the furnace. As for the temperature in each part in the furnace, analytical results generally were in good agreement with the experimental ones. This suggests that our analysis method is useful in the fundamental heat transfer design of a practical-size industrial furnace with an actual work, such as a bolts-packed model. For the temperature distribution in the work, analytical results were also in good agreement with experimental ones. Consequently, it was found that the heat transfer in the bolts-packed work could be described with effective thermal conductivity.

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