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تحقیق و طراحی مهندسی شیمی
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • study of the influence of axial conduction in a boiling heated pipe

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    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 569
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     in this work a characterization of a horizontal heated pipe has been performed. this characterization consists in a steady state analysis of the thermohydraulic behavior of a boiling heated channel with subcooled liquid at the inlet. the temperature, velocities and pressure profiles along the heated section have been analyzed and the length of the single- and two-phase flow regions have been characterized. without axial conduction and due to the big difference in the magnitude of the single- and two-phase heat transfer coefficient, steep temperature gradients were observed. by adding the effect of axial conduction, more heat is removed from the single phase region and added to the two-phase region through the wall. the net effect was a decrease in length of the two-phase flow region and consequent increase of the single-phase region. it was also observed that the axial conduction decreases the gradients in the wall temperature profile but it does not influence markedly its temperature differences with the fluid.

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