کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8078384 | 1521480 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental investigation of the effects of silica/water nanofluid on PV/T (photovoltaic thermal units)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
In this research, the effects of using nanofluid as a coolant on the thermal and electrical efficiencies of a PV/T (photovoltaic thermal unit) are experimentally studied. Coolant fluids in the experiments are pure water and silica (SiO2)/water nanofluid 1% and 3% by weight (wt%). A brief uncertainty analysis is performed which shows that the measurements are sufficiently accurate. By converting the output electrical energy of the PV/T system into an equivalent thermal energy, it is found that the overall energy efficiency for the case with a silica/water nanofluid of 1Â wt% is increased by 3.6% compared to the case with pure water. When using the silica/water nanofluid of 3Â wt%, however, the increase is 7.9%. The thermal efficiency of the PV/T collector for the two cases of 1Â wt% and 3Â wt% of silica/water nanofluids are increased by 7.6% and 12.8%, respectively. The total exergy of the PV/T system, with and without nanofluids, is also compared with that of the PV system with no collector. It is observed that by adding a thermal collector to a PV system, the total exergy for the three cases with pure water, 1Â wt% silica/water nanofluid, and 3Â wt% silica/water nanofluid is increased by 19.36%, 22.61% and 24.31%, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 66, 1 March 2014, Pages 264-272
Journal: Energy - Volume 66, 1 March 2014, Pages 264-272
نویسندگان
Mohammad Sardarabadi, Mohammad Passandideh-Fard, Saeed Zeinali Heris,