Peltier’s and Thomson’s coefficients of thermoelectric phenomena in the observable formulation
Peltier’s and Thomson’s coefficients of thermoelectric phenomena in the observable formulation
复制标题
可观测公式中热电现象的帕尔贴系数和汤姆逊系数
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
J. Garrido
中科院分区：
文献类型：
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作者：
J. Garrido
四个输运系数表征材料的热电性能。其中三个被广泛测量和研究。但有关珀耳帖系数的文献非常有限。这种不相等的结果是Onsager互反关系（ORR）的结果。本文对珀耳帖系数测量的精密度和准确度进行了评述。因此，我们认为ORR的实验确认水平较低。为了以有利的方式描述热电过程，使用了可观察的公式。其特征在于在探针端子处测量的电势和导体横向耗散的热通量。能量平衡提供了观测量与Peltier系数和Thomson系数之间的基本关系。提出了一种测量珀耳帖系数的新方法。
Four transport coefficients characterize the thermoelectric properties of materials. Three of them are widely measured and studied. But the number of references on the Peltier coefficient are very limited. This unequal result is a consequence of the Onsager reciprocal relation (ORR). A review on the preciseness and accuracy of Peltier coefficient measurements has been developed in this paper. Thus we can appreciate a low level in the experimental confirmation for the ORR. In order to describe the thermoelectric processes in an advantageous way, the observable formulation has been used. This is characterized by the electric potential measured at the probe terminals and for the heat flux which the conductor laterally dissipates. The energy balance provides the basic relationships among the observables and the Peltier and Thomson coefficients. A new way for measuring the Peltier coefficient has been suggested.