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EXPERIMENTAL PERFORMANCE EVALUATION OF SINTERED Gd SPHERES PACKED BEDS

机译:烧结Gd球形袋床的实验性能评估

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摘要

Research in magnetic refrigeration heavily relies on the use of packed spheres in regenerators, however little investigation to verify that such non-monolithic arrangements guarantee a sufficiently constrained structure has yet been performed. This work presents a preliminary comparison of the performance of AMRs consisting of Gd spheres with diameters ranging from 450-550 microns partially sintered by Spark Plasma Sintering (SPS) to similar spheres, sorted in the same size range and from the same batch, but merely packed. Pressure drop is compared at uniform temperature and at a range of heat rejection temperatures and temperature spans. Performance is compared in terms of temperature span at a range of heat rejection temperatures (295 – 308 K) and 0 and 10 W cooling loads. Results show a moderate increase of pressure drop with the sintered spheres, while temperature spans were consistently 2.5 - 5 K smaller. These results are coherent with previously presented results [1].
机译:磁制冷的研究严重依赖于蓄热器中填充球的使用,然而,尚未进行过任何研究以验证这种非整体式布置可确保充分约束的结构。这项工作对AMR的性能进行了初步比较,该AMR由直径450-550微米的Gd球组成,部分通过火花等离子烧结(SPS)烧结到相似的球,以相同的尺寸范围和相同的批次进行分类,但仅打包。在均匀温度下以及一系列排热温度和温度跨度下比较压降。在散热温度范围(295 – 308 K)以及0和10 W冷却负载下,根据温度跨度比较性能。结果表明,烧结球的压降适度增加,而温度跨度始终小2.5-5K。这些结果与先前提出的结果一致[1]。

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  • 来源
  • 会议地点 Turin(IT)
  • 作者单位

    Institute for Integrated Energy Systems, Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada E-mail: atura@uvic.ca;

    DTU Energy, Technical University of Denmark, Roskilde, Denmark;

    DTU Energy, Technical University of Denmark, Roskilde, Denmark;

    DTU Energy, Technical University of Denmark, Roskilde, Denmark;

    Institute for Integrated Energy Systems, Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada;

    Institute for Integrated Energy Systems, Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada;

    Institute for Integrated Energy Systems, Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada;

    Institute for Integrated Energy Systems, Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Active magnetic regenerator; spark plasma sintering; partially sintered spheres regenerator; Gd;

    机译:有源磁蓄热器;火花等离子体烧结;部分烧结球体蓄热器; d;

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