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Fabrication of Heat Storage Pellets Consisting of a Metallic Latent Heat Storage Microcapsule and an Al_2O_3 Matrix

机译:制造由金属潜热储存微胶囊和AL_2O_3基质组成的蓄热粒料

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摘要

Energy efficiency is fundamental in the steel industry. Latent heat storage (LHS) systems with phase change materials (PCM) are attractive technologies for the recovery and utilization of heat, especially for the development of high-temperature thermal energy storage system. This paper describes fabrication of LHS pellets for high-temperature applications using metallic microencapsulated PCM (MEPCM). The LHS pellets consist of Al-Si PCM parts and an Al_2O_3 matrix. The pellets were fabricated by mixing MEPCM with sinterable alumina. The powder mixture was then pelletized and sintered at different pressures and atmospheric conditions, respectively. Some MEPCM in the pellets remained spherical after being sintered at 1000°C, a high-temperature condition above the PCM melting temperature. All fabricated pellets exhibited latent heat of PCM at the melting point of the PCM, about 577°C. The maximum value of latent heat was 73.5 J g~(-1). This was observed for the LHS pellet pelletized at 20 MPa and sintered under O_2 atmosphere. Therefore, this study presents a great material for high-temperature thermal energy storage systems in the steel industry.
机译:能源效率是钢铁行业的基础。具有相变材料(PCM)的潜热储存(LHS)系统是用于恢复和利用热量的吸引力,特别是对于高温热能存储系统的开发。本文介绍了使用金属微胶囊化PCM(MEPCM)的高温应用的LHS颗粒的制造。 LHS颗粒由Al-Si PCM部件和AL_2O_3矩阵组成。通过将Mepcm与可烧结的氧化铝混合来制造粒料。然后将粉末混合物分别在不同压力和大气条件下造粒并烧结。颗粒中的一些Mepcm在1000℃下烧结后保持球形,高于PCM熔化温度的高温条件。所有制造的颗粒在PCM的熔点处表现出PCM的潜热,约577℃。潜热的最大值为73.5Jg〜(-1)。对于在20MPa造粒并在O_2大气下烧结的LHS颗粒观察到这一点。因此,本研究为钢铁工业中的高温热能储存系统提供了一种很好的材料。

著录项

  • 来源
    《ISIJ international》 |2020年第10期|2152-2156|共5页
  • 作者单位

    Graduate School of Engineering Hokkaido University Kita 13 Nishi 8 Kita-ku Sapporo Hokkaido 060-8628 Japan;

    Faculty of Engineering Hokkaido University Kita 13 Nishi 8 Kita-ku Sapporo Hokkaido 060-8628 Japan;

    Faculty of Engineering Hokkaido University Kita 13 Nishi 8 Kita-ku Sapporo Hokkaido 060-8628 Japan;

    Faculty of Engineering Hokkaido University Kita 13 Nishi 8 Kita-ku Sapporo Hokkaido 060-8628 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    steelmaking; high temperature waste heat recovery; phase change material;

    机译:炼钢;高温废热回收;相变材料;

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