ペルチェ素子のゼーベック効果を考慮した熱等価回路と冷却効率を向上させる駆動方式

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  • 関口 諒
    東洋大学大学院 理工学研究科 電気電子情報専攻
  • 劉 雨瀚
    （株）アルプス技研
  • 佐野 勇司
    東洋大学大学院 理工学研究科 電気電子情報専攻

書誌事項

タイトル別名
  • Thermal Equivalent Circuit of Peltier Device Considered Seebeck Effect and Driving Method Improving Cooling Efficiency of the Device
  • ペルチェ ソシ ノ ゼーベック コウカ オ コウリョ シタ ネツ トウカ カイロ ト レイキャク コウリツ オ コウジョウ サセル クドウ ホウシキ

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説明

<p>Conventionally Peltier device has been controlled precisely by pulse driving current. In this study, it is shown that driving Peltier device by DC current controlled by pulse signal increases COP of cooling system with reducing self-heating in the device keeping accurate controlling. In practical application, the DC current driving can be achieved easily by connecting one electric condenser with large capacitance to the Peltier device in parallel. In results of analysis for electric circuit, the DC driving current reduced the self-heating in the Peltier device to conventional calorific power multiplied by driving duty-cycle value. Heat absorption rate in the Peltier device was increased by half of the reduction in the self-heating. Thermal equivalent circuit of Peltier device considered Seebeck effect was proposed to analyzed COP accurately. It was also analyzed COP of system driven by each current by using proposed thermal equivalent circuit. In result of experiment, it was possible to confirm that COP in cooling system using the DC driving current was increased than conventional system. In particular, the COP increased to equal or more than 2.01 times in less than 50% of driving duty cycle.</p>

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