关于中温太阳能收集系统相变材料热传递特征的研究
Tianqi Wang1,2, Yingai Jin1,2, Firoz Alam3
1National Key Laboratory of Automotive Chassis Integration and Bionics, Changchun 130022, China.
Materials (Basel, Switzerland)
|November 9, 2024
概括
混合相变材料 (PCM) 显著改善了太阳能储能. 这项研究表明,增强了热储和效率,为可再生能源的可靠性提供了低成本的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 可再生能源工程可再生能源工程
- 热力学是一种热力学.
背景情况:
- 预计可再生能源,特别是太阳能,将主导新的全球发电能力.
- 太阳能的间歇性需要高效的储能解决方案.
- 换相材料 (PCM) 具有高能量密度,但热导率较低,限制了它们的应用.
研究的目的:
- 实验研究混合相变材料 (石墨烯和氧化八水合物) 的储能能力.
- 为了评估这些混合PCM与中温太阳能热收集系统集成的性能.
- 将混合PCM的热储性能与单个PCM和水储性能进行比较.
主要方法:
- 在太阳能热采集系统中对混合PCM (和氧化八水合物) 进行实验研究.
- 累积电荷分数,能量容量和能量损失的测量.
- 在PCM储和水储之间比较热量和能量储存效率.
主要成果:
- 与单个PCM相比,混合PCM实现了最高的累积电荷分数 (0.59),能量容量和最低的能量损耗.
- 换相材料储显示储热量增加了27%,储能效率比储水效率增加了18%.
- 混合PCM在各种温度下表现出增强的性能和出色的热储性能.
结论:
- 混合相变材料显著提高了太阳能储能效率和可靠性.
- 混合PCM的集成为设计节能,低成本的太阳能热储能系统提供了一个有前途的途径.
- 对混合PCM的进一步研究可以优化可再生能源的整合和电网稳定性.
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