کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
670156 | 1458779 | 2011 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Water-based suspensions of Al2O3 nanoparticles and MEPCM particles on convection effectiveness in a circular tube
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This work compares experimentally the effectiveness of substituting the water-based suspensions of Al2O3 nanoparticles (nanofluid) and of micro-encapsulated phase change material particles (PCM suspension) for the pure water for laminar forced convective cooling through an iso-flux heated circular horizontal tube. Convection heat transfer experiments have been undertaken for the tube using the pure water, the PCM suspensions (ÏPCM = 2, 5, and 10 wt.%) and the nanofluids (Ïnp = 2, 6, and 10 wt.%) as the working fluids under the following operating conditions: the volume flow rate Q = 25-240 cm3/min (the Reynolds number Ref = 195-1801), the heating power applied at the outer wall of the tube qo = 20, 30, 40 W, and the inlet fluid temperature Tin = 32.8-33.2 °C. In addition, a scale analysis together with integral energy balance is presented concerning thermally developing heat transfer characteristics of the water-based suspension flow in the tube. The convective cooling performance of the water-based suspensions was gauged in terms of local and surface-averaged temperature control effectiveness along the tube wall compared with that obtained for the pure water. Furthermore, the water-based suspensions were compared based on the figures of merit for their heat transfer performances against the corresponding pressure drop penalty.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Thermal Sciences - Volume 50, Issue 5, May 2011, Pages 736-748
Journal: International Journal of Thermal Sciences - Volume 50, Issue 5, May 2011, Pages 736-748
نویسندگان
C.J. Ho, J.B. Huang, P.S. Tsai, Y.M. Yang,