在泡内部化的PCM的热传递特性研究
Farjad Shahid Hasan Khan1, Andrea Diani1
1Department of Industrial Engineering, University of Padova, via Venezia 1, 35131 Padova, Italy.
Materials (Basel, Switzerland)
|November 27, 2025
概括
阶段变换材料 (PCM) -金属泡复合材料在热能储存 (TES) 和电子冷却方面显示出更好的热性能. 金属泡加快化,并提高温度均性,相比纯PCM在基础加热下.
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.
- 储能 储能 储能 储能 储能 储能
背景情况:
- 传统的热能储存 (TES) 和电子冷却经常面临热滞后和局部过热的挑战.
- 变相材料 (PCM) 提供高能量存储密度,但热导率低.
- 金属泡在与PCM相结合时,提供高表面积和增强的导热性.
研究的目的:
- 在基层加热下研究相变材料 (PCM) -金属泡复合材料的热性能.
- 为了比较底部加热配置与更常见的TES和电子冷却侧面加热情况.
- 评估金属泡孔密度,PCM类型和热流对融特性的影响.
主要方法:
- 使用T历史方法对三种PCM (RT42,RT55,RT64HC) 的热物理性质进行表征.
- 用两个PCM (RT55,RT64HC) 浸金属泡 (10,20,40 PPI),用于基层加热复合材料的测试.
- 在不同的热流下进行实验性测试,包括纯PCM的对照案例.
主要成果:
- 与纯PCM相比,金属泡的加入显著改善了温度均性和加速化.
- PCM类型 (化温度) 强烈影响了化持续时间,而PPI的影响最小.
- 较高的热量流量大大减少了融时间,证明了其主导地位,尽管在较高的价值下回报率下降.
结论:
- PCM-金属泡复合材料增强热传递并减轻过热,使TES和冷却系统更紧,更有效.
- 底部加热的配置对于实际应用来说比侧面加热的外更相关.
- 对于非adiabatic案例,先进的泡架构和实际应用扩展,需要进一步研究.
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