Heat Transfer Coefficient between Wall and Particles Bed in Rotating Cylinder

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Other Title
  • 回転円筒炉における壁・粒子層間伝熱係数
  • カイテン エントウロ ニ オケル カベ リュウシ ソウカン デンネツ ケイスウ

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Abstract

The heat transfer coefficient between a rotating cylinder wall and the spherical particles bed contacting with it was experimentally and theoretically studied. Two experiments were done: one in the steady condition with a constant feed of solid particles and the other in the transient condition with initially charged burdens. In the both experiments the steel cylinder assumed to be a rotating kiln was externally heated by means of Kanthal wire, which had been wound on the cylinder wall. The temperature was limited to a lower range in which radiation could be neglected. Wall, particles bed and free board temperatures were continuously measured by means of CA-thermocouples. Steel, glass, copper and alumina balls, 0.03 cm to 0.4 cm in size, were used as the solid burden.<BR>Heat transfer coefficients between the wall and the particle bed which have been estimated in analyzing the measured temperatures can be explained by the thermal penetration model

Journal

  • Tetsu-to-Hagane

    Tetsu-to-Hagane 64 (10), 1491-1498, 1978

    The Iron and Steel Institute of Japan

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