单一和混合纳米流体对光伏热系统性能的影响的热力学分析:一项比较研究
Mohammed Alktranee1,2, Mohammed Ahmed Shehab3,4, Zoltán Németh5
1Department of Fluid and Heat Engineering, Faculty of Mechanical Engineering and Informatics, University of Miskolc, Miskolc, HU-3515, Hungary.
Heliyon
|December 4, 2023
概括
一种新的混合纳米流体 (TiO2-Fe2O3) 显著提高了光伏热 (PV/T) 系统的性能. 它降低了光伏电池的温度,增加了电力,提高了能源和能量效率,证实了经济可行性.
科学领域:
- 可再生能源系统可再生能源系统
- 纳米技术应用 纳米技术应用
- 热力学是一种热力学.
背景情况:
- 光伏热 (PV/T) 系统集成太阳能捕获电力和热量.
- 提高PV/T效率需要有效的冷却和能量传输机制.
- 纳米流体有可能改善太阳能应用中的传热性能.
研究的目的:
- 通过使用单一TiO2和混合TiO2-Fe2O3纳米流体,研究光伏/光伏系统的能量和功率效率.
- 为了评估这些纳米流体对光伏电池温度,能源生产和能量损失的影响.
- 为了在PV/T系统中进行纳米流体的实际应用进行经济分析.
主要方法:
- 用于纳米流体循环的光伏模块后部的吸收板上使用了蛇形管.
- 测试了各种体积分数的单一TiO2和混合TiO2-Fe2O3纳米流体.
- 与之前的研究和水冷却相比,比较了能源和功率性能.
主要成果:
- 与水相比,混合TiO2-Fe2O3纳米流体将光伏电池温度降低了42.19%.
- 电力增加了74.5% (单体) 和46.22% (混合) 在0.3卷%纳米流体.
- 混合纳米流体提高了14.89%的能量效率,减少了45.5%的能量损失,并实现了54天更短的回报期.
结论:
- 混合TiO2-Fe2O3纳米流体在PV/T系统中表现出优异的性能,与单一TiO2和水相比.
- 混合纳米流体的增强热传递 (Nu数和HTC) 会带来显著的效率提升.
- 混合纳米流体在PV/T系统中的应用在经济上是可行的,并提高了整体系统的可持续性.
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