可定制的热导和热能储存行为在3D打印的基于阶级细胞结构的阶段变化材料中
Lin Qiu1, Xin Wang1, Guangpeng Feng1
1School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
Small methods
|February 21, 2025
概括
这项研究优化了用于相变材料 (PCM) 的细胞结构. 新的层次设计改善了热储能,降低了峰值温度,加快了融时间.
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.
- 计算力学 计算力学 计算力学
背景情况:
- 细胞结构是热能储存中的相变材料 (PCM) 的关键.
- 周期基细胞 (PBC) 的拓学对热导和PCM特性产生了重大影响.
研究的目的:
- 为细胞结构开发一个多尺度拓优化框架.
- 为了确定最佳的PBC配置和密度分布,以提高热性能.
主要方法:
- 多尺度拓优化框架. 多尺度拓优化框架.
- 具有不同密度的层次性孔隙设计.
- 选择性激光融3D打印用于实验验证.
主要成果:
- 优化的树状层次结构将最大温度降低22%,并将统一性提高9%.
- 化时间在计算上缩短了8%,在实验中缩短了10.4%.
- 证明了热导率的调制,而不依赖于孔隙性.
结论:
- 层次的细胞结构为PCM提供了卓越的热管理.
- 挑战了热导率仅仅取决于孔隙性的概念.
- 介绍了一种改善PCM化行为的新方法.
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