کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7055664 | 1458045 | 2016 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Heat transfer from a 2Â ÃÂ 2 wire-wrapped rod bundle to supercritical pressure water
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
An experiment has been completed to study the heat transfer characteristics of supercritical water in a 2Â ÃÂ 2 wire-wrapped rod bundle. The rod-bundle simulated a fuel assembly with four heated rods and was installed inside a square channel with rounded corners. A wire of 1.2Â mm outer diameter was helically wrapped around the outer surface of each heated rod at an axial pitch of 200Â mm. The experimental parameters covered the pressure of 23-28Â MPa, mass flux of 400-1000Â kg/m2s and heat flux range on the rod surface of 200-1000Â kW/m2. Wall temperatures obtained at each heated rod were examined and average heat transfer coefficients were calculated at each measuring location of the rod and compared against those obtained with a 2Â ÃÂ 2 bare rod bundle. Heat transfer characteristics of supercritical water in the 2Â ÃÂ 2 rod bundle were analyzed with respect to the variations of heat flux, mass flux and pressure. Eleven heat transfer correlations were assessed against the current set of test data. The results showed that the correlations of Jackson and Krasnoshchekov-Protopopov give the best predictions on average Nusselt number.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 97, June 2016, Pages 486-501
Journal: International Journal of Heat and Mass Transfer - Volume 97, June 2016, Pages 486-501
نویسندگان
Han Wang, Qincheng Bi, Laurence K.H. Leung,