消极太阳能追踪器使用双金属带激活器,并集成了夜间返回机制
Mintesinot Alemayehu1, Bimrew Tamrat Admasu1
1Bahir Dar Institute of Technology, Bahir Dar University, 6000, Bahir Dar, Ethiopia.
Heliyon
|July 28, 2023
概括
这项研究引入了一种新型的被动太阳能追踪器,可靠地将光伏 (PV) 电池板在日出前返回东方位置. 与现有的追踪器不同,它独立于夜间温度波动,确保一致的性能和更高的能量收集.
科学领域:
- 可再生能源工程可再生能源工程
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
背景情况:
- 由于环境温度的变化,被动太阳能追踪器经常在黎明前重新定位面板时遇到困难.
- 电流跟踪器中的双金属条形衍射器表现出夜间温度的依赖性,导致性能不一致.
- 这种不可靠性影响了太阳能发电的整体效率和可预测性.
研究的目的:
- 设计和评估一个被动太阳能追踪器,带有双金属条形反射器,独立于夜间温度差异.
- 为了提高被动太阳能追踪系统的可靠性和准确性.
- 提供一个具有成本效益和稳定的太阳能跟踪解决方案.
主要方法:
- 开发了一种新型的被动太阳能追踪器设计,采用了温度独立的双金属条形反射器.
- 进行了实地测试,将拟议的追踪器与固定光伏 (PV) 系统进行比较.
- 分析了包括功率输出,功率密度和能量收集效率在内的性能指标.
主要成果:
- 拟议的追踪器每天平均输出功率为70-120W,显著超过固定系统 (10-120W).
- 它提供了每单位面积额外的47W,优化了输出功率,并节省了每单位面积71.75美元的成本.
- 与理想的跟踪相比,该系统的能量收集效率提高了24.86%,准确度高达96.4%.
结论:
- 开发的被动太阳能追踪器提供了可靠和稳定的解决方案,克服了现有设计的局限性.
- 它为固定光伏电池板和主动跟踪系统提供了一种经济高效,易于安装和操作的替代方案.
- 该系统对夜间温度波动的独立性确保在各种条件下保持一致的性能.
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