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 2 × 2 wire-wrapped rod bundle to supercritical pressure water
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Heat transfer from a 2 × 2 wire-wrapped rod bundle to supercritical pressure water
چکیده انگلیسی
An experiment has been completed to study the heat transfer characteristics of supercritical water in a 2 × 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 1.2 mm outer diameter was helically wrapped around the outer surface of each heated rod at an axial pitch of 200 mm. The experimental parameters covered the pressure of 23-28 MPa, mass flux of 400-1000 kg/m2s and heat flux range on the rod surface of 200-1000 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 2 × 2 bare rod bundle. Heat transfer characteristics of supercritical water in the 2 × 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
نویسندگان
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