单通道冷却光伏系统的热性能的数值研究,使用分离器和不同的纳米流体
T Lima-Téllez1, J F Hinojosa1, I Hernández-López1
1Departamento de Ingeniería Química y Metalurgia, Universidad de Sonora (UNISON), Blvd. Rosales y Luis Encinas, Hermosillo, CP 83000, Sonora, Mexico.
Heliyon
|August 21, 2024
概括
这项研究评估了用于冷却太阳能光伏电池板的纳米流体,发现CuO最有效. 隔离器还提高了面板的电效率.
科学领域:
- 材料科学 材料科学 材料科学
- 热力工程是热力工程中的一个.
- 可再生能源可再生能源是可再生能源.
背景情况:
- 太阳能光伏 (PV) 面板的效率随着温度的上升而下降.
- 有效的冷却系统对于最大化太阳能转换至关重要.
- 纳米流体为传热应用提供了增强的热性能.
研究的目的:
- 用各种纳米流体对使用光伏电池板的新型平行流通道冷却系统的性能进行数值研究.
- 分析纳米粒子类型 (Al2O3,CuO,ZnO),度,雷诺兹数和太阳辐射对光伏面板热电效率的影响.
- 评估分离器在改善传热和面板性能方面的有效性.
主要方法:
- 计算流体动力学 (CFD) 模拟被用来建模光伏电池板和纳米流体之间的热传递.
- 该研究考虑了纳米粒子布朗运动和温度依赖的流体特性.
- 参数变化包括纳米粒子度,雷诺兹数 (18-1800) 和太阳辐射 (200-1000 W/m2).
主要成果:
- 铜氧化物 (CuO) 纳米流体在低雷诺兹数下比纯水显示出最高的热效率改善 (5.67%).
- 10%的Al2O3纳米流体将面板温度降低了高达15%,并在特定的雷诺德数范围 (18-42) 内将电效率提高了4%.
- 增加的雷诺兹数和较低的太阳辐射减少了纳米流体冷却效益,而屏蔽则提高了2%的电效率.
结论:
- 纳米流体,特别是CuO,显示出增强太阳能光伏电池板热管理的巨大潜力.
- 优化纳米流体度和流量条件对于最大限度地提高效率至关重要.
- 在冷却通道内集成的分离器提供了一种协同方法来提高光伏电气性能.
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