Finite element analysis and material sensitivity of Peltier thermoelectric cells coolers
Finite element analysis and material sensitivity of Peltier thermoelectric cells coolers
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DOI：
10.1016/j.ijheatmasstransfer.2011.08.031
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发表时间：
2012-01
影响因子：
5.2
通讯作者：
J. Aparicio;R. Palma;R. Taylor
中科院分区：
文献类型：
--
作者：
J. Aparicio;R. Palma;R. Taylor
在这项工作中，有限元模拟的商业热电电池，工作作为一个冷却热泵，提出。专门开发的有限元是三维的，非线性的，在其制定（使用二次温度依赖于材料性能）和完全耦合，包括塞贝克，珀耳帖，汤姆森和焦耳效应。另一种特殊的界面有限元开发的电场强度，利用重复性和对称性。的电压，温度和相应的通量的分布进行了深入的研究，电池的性能与制造商和简化的分析公式进行了比较，显示出良好的一致性。结合有限元模型和蒙特卡罗技术，灵敏度分析，考虑到性能依赖于材料性能，几何参数和规定的值。该分析可以被认为是优化这些器件的第一步，其结论是，电导率和塞贝克系数的材料特性的温度依赖性与电池性能非常相关。
In this work, a finite element simulation of a commercial thermoelectric cell, working as a cooling heat pump, is presented. The specially developed finite element is three-dimensional, non-linear in its formulation (using quadratic temperature-dependence on material properties) and fully coupled, including the Seebeck, Peltier, Thomson and Joule effects. Another special interface finite element is developed to prescribe the electric intensity, taking advantage of repetitions and symmetries. A thorough study of the distributions of voltage, temperature and the corresponding fluxes is presented, and the performance of the cell is compared with that of the manufacturer and with simplified analytical formulations, showing a good agreement. Combining the finite element model with the Monte Carlo technique, a sensitivity analysis is presented to take into account the performance dependence on the material properties, geometrical parameters and prescribed values. This analysis, which can be considered a first step to optimize these devices, concludes that the temperature-dependence of the material properties of electric conductivity and Seebeck coefficient is very relevant on cell performance.