Alktranee Mohammed, Shehab Mohammed Ahmed, Németh Zoltán, Bencs Péter, Hernadi Klara
Department of Fluid and Heat Engineering, Faculty of Mechanical Engineering and Informatics, University of Miskolc, Miskolc, HU-3515, Hungary.
Department of Mechanical Techniques, Technical Institute of Basra, Southern Technical University, Basrah, Iraq.
Heliyon. 2023 Nov 20;9(12):e22535. doi: 10.1016/j.heliyon.2023.e22535. eCollection 2023 Dec.
The energy and exergy efficiency of a photovoltaic thermal (PV/T) system at various volume fractions is investigated with mono TiO nanofluid and new hybrid TiO-FeO nanofluid. Serpentine tubes soldered on an absorbing plate attached to the rear of the PV module have been proposed to evaluate the effect of nanofluids on the PV/T temperature reduction, energy produced, and exergy losses. The study compared energy and exergy with previous studies and delivered an economic analysis to confirm the feasibility of applying nanofluids. The results indicated that using TiO-FeO nanofluid reduced the PV cell's temperature by 42.19% compared to water, TiO nanofluid, which increased the electrical power by 74.5% and 46.22% when cooling by mono and hybrid nanofluid at 0.3 vol%. The PV/T system's maximum thermal and electrical efficiency recorded with mono and hybrid nanofluids was 34.6%, 8.44%, 47.2%, and 12.62%, respectively. Dispersion of hybrid nanocomposite in DI water has enhanced the number and HTC by 42.72% and 23% higher than mono nanofluid, which improved the exergy efficiency of the PV/T system by 14.89%. A better payback period was achieved with a hybrid nanofluid by 54 days with reduced exergy losses by 45.5% and entropy generation by 86.29%.
采用单分散TiO纳米流体和新型混合TiO-FeO纳米流体，研究了光伏-热（PV/T）系统在不同体积分数下的能量和㶲效率。提出了焊接在光伏组件背面吸收板上的蛇形管，以评估纳米流体对PV/T温度降低、发电量和㶲损失的影响。该研究将能量和㶲与先前的研究进行了比较，并进行了经济分析，以确认应用纳米流体的可行性。结果表明，与水相比，使用TiO-FeO纳米流体可使光伏电池温度降低42.19%；在0.3 vol%的单分散和混合纳米流体冷却下，TiO纳米流体可使电功率分别提高74.5%和46.22%。单分散和混合纳米流体记录的PV/T系统最大热效率和电效率分别为34.6%、8.44%、47.2%和12.62%。混合纳米复合材料在去离子水中的分散使颗粒数和传热系数分别比单分散纳米流体提高了42.72%和23%，从而使PV/T系统的㶲效率提高了14.89%。混合纳米流体实现了更好的回收期，缩短了54天，㶲损失降低了45.5%，熵产生降低了86.29%。
