کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10642902 | 998121 | 2011 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Performance of a concentrated photovoltaic energy system with static linear Fresnel lenses
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
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چکیده انگلیسی
All of the direct radiation is concentrated by a factor of 25 on a photovoltaic/thermal (PV/T) module and converted to electrical and thermal (hot water) energy. The PV/T module is kept in position by a tracking system based on two electric motors and steel cables. The energy consumption of the tracking system, ca. 0.51 W mâ2, is less than 2% of the generated electric power yield. A peak power of 38 W mâ2 electrical output was measured at 792 W mâ2 incoming radiation and a peak power of 170 W mâ2 thermal output was measured at 630 W mâ2 incoming radiation of. Incoming direct radiation resulted in a thermal yield of 56% and an electric yield of 11%: a combined efficiency of 67%. The annual electrical energy production of the prototype system is estimated to be 29 kW h mâ2 and the thermal yield at 518 MJ mâ2. The collected thermal energy can be stored and used for winter heating. The generated electrical energy can be supplied to the grid, extra cooling with a pad and fan system and/or a desalination system. The obtained results show a promising system for the lighting and temperature control of a greenhouse system and building roofs, providing simultaneous electricity and heat. It is shown that the energy contribution is sufficient for the heating demand of well-isolated greenhouses located in north European countries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy - Volume 85, Issue 3, March 2011, Pages 432-442
Journal: Solar Energy - Volume 85, Issue 3, March 2011, Pages 432-442
نویسندگان
P.J. Sonneveld, G.L.A.M. Swinkels, B.A.J. van Tuijl, H.J.J. Janssen, J. Campen, G.P.A. Bot,