【摘要】 本文采用COMSOL Multiphysics 6.0软件建立了三维变截面热电制冷器(TEC)模型，采用有限元分析法研究了热冷端截面面积比和支腿高度对TEC性能的影响，并与传统热电制冷元件性能进行了对比。研究结果表明，增加支腿高度和合理改变支腿形状能够显著改善TEC的冷却性能。当热冷端截面面积比为0.4时，支腿高从0.6 mm增加到1.2 mm,冷端温度可降低6.0%。优化后TEC元件的冷端温度比传统元件低8.64 K,制冷性能提高了3.19%。材料的选择和放置顺序也影响变截面分段式TEC的性能。更多还原

【Abstract】 A three-dimensional variable-section thermoelectric cooler(TEC) model was proposed using COMSOL Multiphysics 6.0.The effects of the ratio of the hot and cold end cross-sectional areas and the height of the legs on the performance of TEC were analyzed by finite element analysis, and a comparison was made with a traditional thermoelectric cooling components. The results indicate that reasonably increasing the height of the leg and changing the shape of the leg can significantly improve the cooling performance of TEC. When the ratio of the hot and cold end cross-sectional areas is 0.4, the cold end temperature of TEC is decreased by 6.0% as the leg height increased from 0.6 mm to 1.2 mm. The cold end temperature of the optimized TEC component is 8.64 K lower than that of the traditional component, and the cooling performance is improved by 3.19%. At the same time, the selection and placement sequence of materials will affect the performance of the variable-section segmented TEC.更多还原