کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5012721 | 1462817 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Performance evaluation of a novel solar photovoltaic-thermal collector with dual channel using microencapsulated phase change slurry as cooling fluid
ترجمه فارسی عنوان
ارزیابی عملکرد یک کلکتور جدید فتوولتائیک خورشیدی با کانال دوگانه با استفاده از دوغاب تغییر فاز میکرو کیسه ای به عنوان مایع خنک کننده
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
In a photovoltaic-thermal solar collector, only a small percentage of the absorbed solar radiation can be converted into electricity, the rest is converted into heat. The waste heat gathering and transferring rate is the key to improve the module efficiency. In this work, a type of microencapsulated phase change slurry was employed in the photovoltaic-thermal solar collectors to improve the thermal and electrical performances. The designed photovoltaic-thermal collector was reduced to a 2-dimension physical model and numerically studied. Solar cells temperature, outlet temperature and pressure drop of the fluid, electrical, thermal and overall net efficiency were simulated and analyzed to evaluate the dynamic performance of the hybrid photovoltaic-thermal collector. Energetic efficiencies for photovoltaic-thermal model with various light concentrations versus the mass flow rate of the microencapsulated phase change slurry flow were investigated. When the concentration is 10Â wt%, the photovoltaic-thermal collector obtained the highest net efficiency with the flow rate of 0.02Â kg/s and the piping height of 10Â mm. And it was found that the temperature variation of both fluid and PV cells employing microencapsulated phase change slurry was much smaller than water, which would improve both thermal and electrical performances. Then the optimized photovoltaic-thermal module was simulated in a daytime with the comparison of conventional water type. It was found that overall net efficiency of the photovoltaic-thermal collector with microencapsulated phase change slurry reached 80.57% at 11:00, about 1.8% higher than the conventional water type. The maximum overall net exergy efficiency was 11.4% in the morning. Above all, the proposed photovoltaic-thermal collector with microencapsulated phase change slurry flow has potential for further development in solar collector.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 145, 1 August 2017, Pages 30-40
Journal: Energy Conversion and Management - Volume 145, 1 August 2017, Pages 30-40
نویسندگان
Lingkun Liu, Yuting Jia, Yaxue Lin, Guruprasad Alva, Guiyin Fang,