Two Key Problems of Practical Alkali Metal Thermoelectric Converter

The conversion efficiency of thermoelectric generator mainly depends on the thermoelectric materials. The best properties of a given thermoelectric material can be obtained only in a narrow temperature range. This is the reason that thermoelectric generators have low conversion efficiency.

热电器件的转换效率主要决定于热电材料，而每种热电材料只能在很窄的本征温度区间内具有较高的转换效率，这是目前热电器件转换效率还比较低的原因。

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Study on thermoelectric feedback effect of the transistor, bringing up a method to model the heat distribution of transistors including thermoelectric feedback effect by conversion of the thermoelectric feedback effect into resistivity variation of Si with temperature and introduction of transistor array. 5.

对双极功率晶体管的热电反馈效应进行了研究，提出将热电反馈效应问题简化为材料电阻率随温度变化的问题，并通过晶体管阵列，提出了建立包含热电反馈效应的双极晶体管热分布模型的方法。

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It was known that Mg2Si_ ( 1-x) Ge_x solid solutions showed much better thermoelectric properties than the pure compound of Mg_2Si, which have long been expected as an ideal candidate for thermoelectric energy conversion in a middle temperature.

已有的研究表明，Mg2Si（1-x）Ge x固溶体优于纯化合物Mg2Si的热电性能，通过掺杂合适的元素，该体系是非常有潜力的中温域热电材料。

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The segmented thermoelectric element has been paid much attention in the world because of its high thermoelectric conversion efficiency in wide temperature scope.

由于分段温差电元件能够在较宽的温度范围内很大程度地提高热电转换效率，因此，在世界范围内受到广泛的关注。

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Thermoelectric refrigeration is a solid-state refrigeration technique that uses thermoelectric conversion directly to get cooling.

热电制冷是一种直接利用电一热转换达到制冷目的的固体制冷技术。

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Thermoelectric materials, which can realize thermoelectric conversion directly without any mechanical equipments and noise, are attractive as a kind of save-energy materials.

热电材料是一类能直接实现热电转换功能的材料，无需机械部件，无噪音，节约能源，因此受到人们的关注。

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The introduction of Functionally Graded Materials in the research course of thermoelectrics can greatly improve the optimal temperature range of thermoelectric materials and conversion efficiency of a thermoelectric device.

在热电材料研究的过程中，梯度材料概念的引入可以使热电材料的性能与使用温度得到最佳匹配，同时，可望使热电系统的转换效率得到大幅度提高。

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The thermoelectric energy conversion effect and the fundamentals of thermoelectric materials are described in present paper, much attention is devoted to the recent development of sintered thermoelectric materials, thermoelectric materials with higher ZT value and thermoelectric materials with graded structure.

本文简要介绍了热电效应的应用状况和热电材料的基本特性，重点评述了热电烧结材料、高ZT值热电材料以及具有梯度结构的热电材料的研究进展。

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The current progress in thermoelectric energy conversion are summarized, the development trends of this area have been presented and discussed.

本文详细阐述了温差发电和温差电致冷技术的现状并讨论了该领域的发展趋势。

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Review on thermoelectric energy conversion

温差电能量转换技术述评

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Despite of the advantages above, the thermoelectric conversion efficiency of Si nanowire thermoelectric materials is not enough for widespread applications and the efficiency of heat dissipation in carbon nanotube thermal interface materials is also not high enough due to existence of interfacial thermal resistance.

尽管存在以上优势，Si纳米线热电材料的热电转换效率还不足以大规模应用，而由于界面热阻的存在，碳纳米管热界面材料的散热效率也比较低。

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In this paper, heat transfer models for both plane and cylindrical shape RTG-chip were established and their analytical solutions were obtained. Effects of the size and structure of isotope heat source in RTG-chip on its temperature and thermoelectric conversion efficiency were investigated.

本文通过建立平板形及圆柱形动力芯片的传热模型并求出理论解，分析了RTG-chip同位素热源的尺度及结构对其温度和热电转换效率的影响规律。

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Thermoelectric conversion efficiency is not high because of the limitation of thermoelectric materials and it has few studies on the match of various parts of thermoelectric generators, so it is necessary to conduct a much deeper study on thermoelectric.

但由于目前热电材料本身性能的限制，其热电转换效率比较低，而且各部分的匹配性研究以及发电系统在废余热应用方面的研究还不够系统，因此有必要对其进行更为深入的研究。

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Excellent camouflage effect can be achieved with our design thermoelectric conversion technique, so it is feasible to apply the thermoelectric conversion technique on the Infrared camouflage.

利用温差电转换技术，可以使坦克得到较好的隐身效果，因此，将温差电转换技术应用于红外隐身领域是完全可行的。

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Due to increased phonon scattering, the Si nanowire nanocomposites with modification are expected to achieve lower thermal conductivity and larger thermoelectric conversion efficiency.

由于声子散射增强，经过修饰的si纳米线复合结构的热导率可以进一步降低，从而获得更大的热电转换效率。

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Analysis of the generating ability of the thermoelectric conversion device

一种温差电器件的发电性能分析研究

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The test results have shown that the thermoelectric conversion efficiency of segmented thermoelectric unicouple made by designed element reached to 7.31%.

测试结果表明：由设计的元件制作出的分段温差电单偶的热电转换效率达到了7.31%。

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Experimental study on the thermoelectric conversion characteristics based on Methane Combustion

基于甲烷燃烧的热电转换特性实验研究

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By means of summarizing and comparing the method and result of both the experiment and numerical simulation, the influence of thermoelectric coefficient, ventilation capacity, and working current on the performance of the prototype was analyzed.

通过对实验和数值模拟结果方法的总结和比较，分析了热电系数、风量、工作电流等不同参数对空调样机性能的影响。

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We also demonstrated that the thermoelectric coefficient is different when Na atom on different sites, and we find the calculated results agreement with the experimental data well.

计算还发现，Na原子占据不同位置时NaxCoO2的热电系数也不同，并把计算结果与实验进行了比较，结果符合较好。

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