A real-sized three-dimensional numerical model of thermoelectric generators at a given thermal input and matched load resistance
A real-sized three-dimensional numerical model of thermoelectric generators at a given thermal input and matched load resistance
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给定热输入和匹配负载电阻下热电发电机的真实尺寸三维数值模型
DOI：
10.1016/j.enconman.2015.06.020
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发表时间：
2015-09
影响因子：
10.4
通讯作者：
Zhao, Yongsheng
中科院分区：
文献类型：
--
作者：
Deng, Yuan;Zhu, Wei;Chen, Xin;Zhao, Yongsheng
热电发电机的设计和优化通常采用有限元分析方法。为了准确分析，在实际应用情况下建立真实尺寸的热电发电机三维模型具有重要意义。本文建立并讨论了热电发电机的实际尺寸三维有限元模型。热电对的高度、截面积和数量是可改变和可编程的。热输入功率恒定，负载电阻与内阻匹配。计算并讨论了热电发电机的平均温差、热侧温度分布和输出性能。结果表明，改变热电对的几何形状或数量可以同时影响平均温差和热侧温度分布。然而，改变热电对的几何形状或数量只能单独提高输出电压或电流，而不能同时提高输出电压或电流。
Thermoelectric generators are usually designed and optimized by finite element analysis. For accurate analysis, it is significant to establish a real-sized three-dimensional model of thermoelectric generator under actual application situations. In this paper, a real-sized three-dimensional finite element model of the thermoelectric generator is established and discussed. The height, cross-sectional area, and amount of thermoelectric pairs are alterable and programmable. The thermal input power is constant and the load resistance matches the internal resistance. The average temperature difference, the hot-side temperature distribution, and the output performance of the thermoelectric generator are calculated and discussed. Results indicate that changing the geometry or amount of thermoelectric pairs can influence the average temperature difference and hot-side temperature distribution simultaneously. However, changing the geometry or amount of thermoelectric pairs can only enhance the output voltage or current solely rather than simultaneously.
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