通过Phonon工程设计的硬碳纳米花实现了基于太阳能热的快速高效的水蒸发和空间加热
Ananya Sah1, Sumit Sharma2, Sandip Saha2
1Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
ACS applied materials & interfaces
|September 8, 2023
概括
研究人员开发了新的纳米结构硬碳花束 (NCF) 以实现高效的太阳能热转换. 这些宽带吸收器提供高太阳能-蒸汽效率,并使积极的空间加热应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 可再生能源可再生能源是可再生能源.
背景情况:
- 高效的太阳能利用需要具有强大的光子吸收和低导热性的宽带吸收器.
- 现有的材料往往难以平衡高效的光吸收与最小的热量损失.
研究的目的:
- 开发一种新的纳米结构硬碳花束 (NCFs) 类,用于增强太阳能热转换.
- 调查NCF在太阳能驱动水蒸发和空间加热应用中的性能.
主要方法:
- 制造有孔的,纳米结构的硬碳花束,具有形微腔.
- 光学吸收,太阳能热转换效率 (ηSTC) 和导热率的表征.
- 测试NCF涂层的太阳能驱动水蒸发和空间加热性能.
主要成果:
- NCF实现了95%的宽带吸收 (250-2500nm) 和高太阳能热转换效率 (ηSTC = 87%).
- 证明了低导热率 (1.5 W m-1 K-1),最大限度地减少了热损失.
- 实现了高的太阳能蒸汽转换效率 (ηSVC = 186%) 和水蒸发率 (5.4 kg m-2 h-1 在 2 太阳).
- 在30天内持续性能,并证明了活跃的空间加热 (346 ± 3K).
结论:
- 太阳能热板是有效采集太阳能热能的一种有前途的材料.
- NCFs独特的纳米结构使其在太阳能驱动的水蒸发和加热中实现了卓越的性能.
- NCF为绿色热量产生和利用提供了可扩展和强大的解决方案.
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