Abstract In this article, a computational study of the thermal management of thermoelectric generator (TEG) with phase change materials (PCM) is made. The test model has been developed and studied using COMSOL Multiphysics. The thermal management of thermoelectric generator is studied using the heat sink encapsulating with the phase change materials through variations in the heat input and the quantity of PCM. The results showed the considerable reduction and constant maintenance with PCM for the cold side temperature of TEG. There was enhancement in output voltage due to an increase in the temperature difference between the hot and cold sides of TEG during the phase change period. The efficiency of TEG is enhanced due to improvement in voltage of TEG. The improvements in efficiency of TEG are found to be 36.7%, 33.8%, 30% for the heat inputs of 0.1 W, 0.15 W and 0.2 W respectively when the PCM height is 3 mm. From the computational results, it is confirmed that the PCM plays vital role for the enhancement in thermal performance of TEG.

中文翻译：

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使用相变材料提高热电发电机的热性能

摘要 本文对相变材料 (PCM) 热电发电机 (TEG) 的热管理进行了计算研究。测试模型是使用 COMSOL Multiphysics 开发和研究的。通过热输入和PCM数量的变化，使用用相变材料封装的散热器来研究热电发电机的热管理。结果表明，使用 PCM 可显着降低 TEG 的冷侧温度并保持不变。由于相变期间 TEG 冷热侧温差的增加，输出电压有所提高。由于 TEG 电压的提高，TEG 的效率得到提高。发现热输入为 0 时，TEG 的效率提高了 36.7%、33.8%、30%。PCM 高度为 3 mm 时分别为 1 W、0.15 W 和 0.2 W。从计算结果可以证实，PCM 对于提高 TEG 的热性能起着至关重要的作用。