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Electrocaloric Refrigeration using Multi-Layers of Electrocaloric Material Films and Thermal Switches

机译：使用多层电热材料膜和热敏开关进行电热制冷

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摘要

The electrocaloric effect in thin films of electrocaloric material has the potential to be used for efficient cooling systems. We numerically calculated the effect of the parameters in electrocaloric refrigeration with multi-layers of electrocaloric material films and thermal switches by changing the contact thermal conductance to improve thermal performance. It was found that the average heat transfer efficiency was 10% and the average heat flux transferred to the cold side of the system was 2.4 × 10~4 W/m~2 for the standard conditions of a frequency of 100 Hz and a temperature difference between the hot side and the cold side of the system of 20 K. The average heat flux transferred to the cold side of the system was maximum when the thickness of the electrocaloric material was 70 μm and thickness of the heat storage material 100 μm. The average heat transfer efficiency was maximum at the two layers of the electrocaloric material.
机译：电热材料薄膜中的电热效应具有用于有效冷却系统的潜力。我们通过改变接触热导率来改善热性能，以数值方式计算了多层电热材料膜和热开关对电热制冷中参数的影响。发现在频率为100 Hz和温度差为100％的标准条件下，平均传热效率为10％，转移到系统冷侧的平均热通量为2.4×10〜4 W / m〜2在系统的热侧和冷侧之间的热通量为20K。当电热材料的厚度为70μm，储热材料的厚度为100μm时，传递到系统冷侧的平均热通量最大。两层电热材料的平均传热效率最高。

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  • 来源
    《Heat Transfer Engineering》 |2018年第12期|1091-1099|共9页
  • 作者

    Shigeki Hirasawa; Tsuyoshi Kawanami; Katsuaki Shirai;

  • 作者单位

    Department of Mechanical Engineering, Kobe University, Kobe, Hyogo, Japan;

    Department of Mechanical Engineering, Kobe University, Kobe, Hyogo, Japan;

    Department of Mechanical Engineering, Kobe University, Kobe, Hyogo, 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
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