Interlaboratory Testing for High‐Temperature Power Generation Characteristics of a Ni‐Based Alloy Thermoelectric Module,Energy Technology

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Interlaboratory Testing for High‐Temperature Power Generation Characteristics of a Ni‐Based Alloy Thermoelectric Module
Energy Technology ( IF 3.6 ) Pub Date : 2020-09-04 , DOI: 10.1002/ente.202000557
Pawel Ziolkowski ₁ , Raju Chetty ₂ , Przemyslaw Blaschkewitz ₁ , Michihiro Ohta ₂ , Atsushi Yamamoto ₃ , Eckhard Müller _{1,

4}

Affiliation

Standardization of metrology for thermoelectric generator modules (TEMs) is a necessary step toward industrialization of thermoelectric applications. Unspecified uncertainty budgets of the widely used custom‐built characterization facilities seem insufficient to validate technological developments, industrial benchmarks, or allow sound conclusions in scientific studies. Particularly, works on high‐temperature TEM have to be supported by suitable characterization techniques. This shall accelerate progress toward product releases for thermoelectric energy conversion. Herein, a Ni‐based alloy TEM is reported, which is developed at the National Institute of Advanced Industrial Science and Technology (AIST) as a prospective standard reference TEM. Comparative measurements at AIST and the German Aerospace Center (DLR) demonstrate the high repeatability and precision of custom‐built TEM characterization facilities at AIST and DLR. Tests at elevated temperatures up to 773 K hot side temperature and 450 K temperature difference reveal excellent accordance of electric measurands with a standard deviation <0.3% for the open‐circuit voltage and <0.85% for electric resistance and maximum power output. Deviations of the heat flow measurement of up to 7.22% arise from individual uncertainties of the used characterization methods and point to the importance of standardization for TEM metrology.

中文翻译：

镍基合金热电模块高温发电特性的实验室间测试

热电发电机模块（TEM）的计量学标准化是迈向热电应用工业化的必要步骤。广泛使用的定制表征设施的未指定不确定性预算似乎不足以验证技术发展，行业基准或在科学研究中得出合理的结论。特别是，高温TEM的工作必须得到合适的表征技术的支持。这将加快向热电能量转换产品释放的进程。本文报道了一种镍基合金TEM，它是由美国国家先进工业科学技术研究院（AIST）开发的，作为一种潜在的标准参考TEM。在AIST和德国航空航天中心（DLR）进行的比较测量表明，在AIST和DLR上定制的TEM表征设施具有很高的可重复性和精度。在高达773 K热侧温度和450 K温差的高温下进行的测试表明，其具有良好的电气性能，开路电压的标准偏差<0.3％，电阻和最大功率输出的标准偏差<0.85％。由于所用表征方法的不确定性，导致热流测量值的偏差高达7.22％，这表明对TEM计量进行标准化的重要性。在高达773 K热端温度和450 K温差的高温下进行的测试表明，其电气测量性能极佳，开路电压的标准偏差<0.3％，电阻和最大功率输出的标准偏差<0.85％。由于所用表征方法的不确定性，导致热流测量值的偏差高达7.22％，这表明对TEM计量进行标准化的重要性。在高达773 K热端温度和450 K温差的高温下进行的测试表明，其电气测量性能极佳，开路电压的标准偏差<0.3％，电阻和最大功率输出的标准偏差<0.85％。由于所用表征方法的不确定性，导致热流测量值的偏差高达7.22％，这表明对TEM计量进行标准化的重要性。

更新日期：2020-11-06

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