کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7045733 | 1457094 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical and thermal investigation of a linear Fresnel collector with trapezoidal cavity receiver
ترجمه فارسی عنوان
بررسی نوری و حرارتی یک جمع کننده خطی فرسن با گیرنده حفره تراپزی
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Concentrating solar collectors are proven to be efficient solutions for heat production in the order of 150-400â¯Â°C. These collectors utilize tracking reflective surfaces and employ line focus concentration. This paper deals with the optical and thermal investigation of a linear Fresnel collector with trapezoidal cavity receiver. The optical analysis was performed through the development of a ray-tracing model and showed the distribution of the solar radiation onto the absorber perimeter. The effect of the slope error is investigated parametrically. The peak instantaneous efficiency was calculated at 0.693, the concentration ratio was found 10.9 and the ground coverage 76.2%. The thermal analysis was performed through a CFD model. The simulation results showed that the absorber heat losses ranged from 181.2â¯W/m to 986â¯W/m, for inlet fluid temperatures from 150â¯Â°C to 375â¯Â°C, respectively. The heat losses from the receiver, absorber and glass cover were also calculated. Temperature distributions in the receiver components were extensively discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 135, 5 May 2018, Pages 379-388
Journal: Applied Thermal Engineering - Volume 135, 5 May 2018, Pages 379-388
نویسندگان
P. Tsekouras, C. Tzivanidis, K. Antonopoulos,