熱スイッチを用いた室温磁気冷凍システム研究の現状と取組み

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タイトル別名
  • Present Status and Approach to a Room-temperature Magnetic Refrigerator with Thermal Switches
  • ネツ スイッチ オ モチイタ シツオン ジキ レイトウ システム ケンキュウ ノ ゲンジョウ ト トリクミ

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A high-performance magnetic refrigerator is expected to serve as an alternative technology for air-conditioners in electric vehicles. The high power consumption of conventional air-conditioners in electric vehicles considerably decreases the cruising distance. In the background, the demands of cooling power density, temperature difference between hot and cold sides, COP and transient properties must be high. We have devised a novel system that doesn't require heat-transfer fluid where heat is transported from the cold side to the hot side via well-controlled thermal switches. The heat transfer mechanism has been verified both experimentally and numerically. Furthermore, the superiority of the refrigerating capacities have also been verified by numerical simulation, with specifications of the main constituent parts varied over a wide range. However, several issues remain to be solved in order to draw out even higher potential. Among the issues, a thermal switch with liquid metal driven by electrowetting-on-dielectric (EWOD) has been introduced as an example solution for the thermal switch.

収録刊行物

  • 低温工学

    低温工学 50 (2), 53-59, 2015

    公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)

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