增强热传输用于低级废热采集中的热磁生成
Haodong Chen1, Mingze Liu1, Ziyuan Yu1
1School of Materials Science and Engineering, University of Science and Technology of Beijing, Beijing, 100083, P R China.
Advanced materials (Deerfield Beach, Fla.)
|March 31, 2025
概括
这项研究通过将纳入Ni-Mn-In合金来增强热磁生成 (TMG),显著提高热传输和功率输出,以有效地回收废热.
科学领域:
- 材料科学 材料科学 材料科学
- 收集能源 收集能源
- 固态物理 固态物理
背景情况:
- 热磁发电 (TMG) 提供了低等级废热回收的潜力.
- 目前的TMG材料面临由于热传递差的局限性,阻碍了实际应用.
- 提高热导率对于提高TMG设备性能至关重要.
研究的目的:
- 为了提高Ni-Mn-InHeusler合金的热磁生成性能.
- 为了提高TMG材料的传热能力.
- 开发一种具有成本效益的复合材料,用于低等级的废热回收.
主要方法:
- 制造Ni-Mn-In/In热磁生成复合材料. 制造Ni-Mn-In/In热磁生成复合材料. 制造Ni-Mn-In/In热磁生成复合材料.
- 在Ni-Mn-In合金中引入具有高导热性的低点 (In).
- 复合材料的导热率,输出电压和功率密度的表征.
- 优化复合几何结构以提高性能.
主要成果:
- Ni-Mn-In/In复合材料显示了导热率的显著增加 (65.2 W m-1 K-1).
- 含有40 wt.% In (In40) 的复合材料表现出优越的TMG性能:平均电压3.8倍高,功率密度2.4倍高于基质合金.
- 优化的In40几何学实现了15倍更高的导热率和比其他TMG材料大8倍的发电指数.
结论:
- 开发的Ni-Mn-In/In复合材料为低等级废热回收提供了一个有前途的解决方案.
- 增强的导热性和TMG性能,加上有利的材料特性,使其适合实际应用.
- 该材料具有零热歇斯底里,良好的可加工性,耐腐蚀性和长期稳定性.
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