一个基于混合再生的完全固态概念磁热制冷器
Yuan Lin1,2, Jing Wang1,2, Wei Dai3
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
Innovation (Cambridge (Mass.))
|June 24, 2024
概括
一种新的混合磁再生器 (HMR) 通过整合高导热材料 (HTCM) 和磁热材料 (MCM) 来增强磁热制冷. 这种方法最大限度地减少了再生损失,提高了先进冷却系统的效率.
科学领域:
- 材料科学 材料科学 材料科学
- 热力学是一种热力学.
- 制冷技术 制冷技术的使用
背景情况:
- 磁热制冷为传统蒸汽压缩系统提供了一个环保的替代方案.
- 传统的再生器 (PMR,AMR) 由于传热流体的限制而遭受效率损失,特别是在高频率时.
- 这些损失源于热传递物质中的死体积,压力下降和不均的温度.
研究的目的:
- 引入一种新的混合磁再生器 (HMR) 设计,以改善磁热制冷.
- 为了使高导热材料 (HTCM) 和磁热材料 (MCM) 能够积极参与再生过程.
- 为了减少再生损失和提高高工作频率的制冷性能.
主要方法:
- 开发一个概念性的混合磁再生器 (HMR),集成固态HTCM和MCM.
- 使用实验推导的亚亚巴特温度变化和磁性工作数据.
- 使用有限元模拟来建模HMR的性能.
主要成果:
- 该HMR设计显著降低了与死体积,压力和温度不均相关的再生损失.
- 达到26K的最大温度范围.
- 在10Hz时显示出8.3kW/kg的高冷却功率.
- 达到54.2%的最大理想功率效率.
结论:
- 拟议的HMR设计为克服当前被动和主动磁再生器的局限性提供了一个有希望的途径.
- 这种综合方法显示了在磁热制冷器中实现优越,先进性能的潜力.
- 这种HMR概念可以带来更高效,更环保的冷却技术.
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