کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4914248 1428956 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Performance of a building-integrated photovoltaic/thermal system under frame shadows
ترجمه فارسی عنوان
عملکرد یک سیستم فتوولتائیک / حرارتی ساختمان در زیر سایه قاب
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Air layer exists between glass covers and cells in most building-integrated photovoltaic/thermal (BIPV/T) systems. This layer significantly reduces heat loss and improves the thermal efficiency of BIPV/T systems. However, the frame border that supports the glass cover casts a shadow over cells near the frame according to the air layer thickness, system orientation and location of the sun, thereby affecting photovoltaic performance. This study aims to find out the effect of such air layer on thermal and photovoltaic performance of BIPV/T systems. The distribution of frame shadows and photovoltaic loss caused by such shadows is analyzed. Then thermal and photovoltaic performance of BIPV/T system with different air layer thicknesses is evaluated. The influences caused by the air layer thickness, orientation of the BIPV/T system, solar altitude, and solar azimuth are analyzed. An approach is presented to evaluate the annual performance of the BIPV/T system. The results show that the frame shadow reduces system photovoltaic efficiency to 2.6% (normal efficiency, 13.0%) in the worst case scenario in Hefei (E117°17′, N31°52′). The maximum annual electrical loss caused by the frame shadow is 70.15 kWh/m2 at an azimuthal angle of −45°. The quantity of total outputs increases with increasing air thickness. But the maximum comprehensive outputs are 359.95 kWh at 20 mm air thickness.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy and Buildings - Volume 134, 1 January 2017, Pages 71-79
نویسندگان
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