کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4990994 | 1457109 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pore scale numerical simulation of heat transfer and flow in porous volumetric solar receivers
ترجمه فارسی عنوان
شبیه سازی عددی پوسته در انتقال حرارت و جریان در گیرنده های خورشیدی حجمی متخلخل
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کلمات کلیدی
گیرنده خورشیدی حجمی، تخت بسته بندی شده، محیط متخلخل مقیاس پوسته،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Volumetric receivers used in concentrated solar power (CSP) plants consist of porous media and transfer energy to the working fluid passing through after being heated by concentrated solar flux. Pore scale models based on structured packed bed volumetric solar receivers with three packed types are investigated in this work. The Monte Carlo Ray Tracing (MCRT) method is employed to analyze the radiation propagation in the volumetric receiver. Then the absorbed flux is used as the boundary heat source in pore scale models, and the heat transfer and flow in pore scale models are analyzed. The influences of porosity, incident angle and receiver absorptivity on the reflection loss and radiation propagation are analyzed. It is demonstrated that the sphere surface absorptivity has a great influence on the absorption process. Smaller incident angle and higher porosity can promote the radiation propagation. The pore diameter and packed type have strong impacts on the pressure drop, while the inlet velocity greatly affects the temperature distribution. Finally, a hybrid packed bed volumetric solar receiver is introduced to optimize the heat transfer and flow in the receiver.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 120, 25 June 2017, Pages 150-159
Journal: Applied Thermal Engineering - Volume 120, 25 June 2017, Pages 150-159
نویسندگان
Qibin Zhu, Yimin Xuan,