کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8072184 | 1521403 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermo-element geometry optimization for high thermoelectric efficiency
ترجمه فارسی عنوان
بهینه سازی هندسه حرارتی برای بهره وری ترموالکتریک بالا
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کلمات کلیدی
عامل سازگاری، بهره وری، ژنراتور ترموالکتریک، ذوب لیزری انتخابی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
The figure of merit of thermoelectric materials is temperature dependent, and thus the local compatibility factor changes significantly along the thermo-element length. A local optimization method to maximize the efficiency of a function graded thermoelectric generator was proposed and discussed in this paper. By adjusting the cross-sectional area and segment's thickness, the reduced current equaled the compatibility factor of the material at every local thermo-element layer. This method can use the full potential of existing materials by maximizing the efficiency at every local thermo-element segment. For such a TEG working in a temperature range of 300-1100â¯K, the efficiencies of P-type segmented Bi0.5Sb1.5Te3/BiSbTe/-PbTe/FeNbSb thermo-element and a N-type segmented Bi2Te2.79Se0.21/Bi2Te2.9Se1.1/SnSe/SiGe thermo-element were 25.70% and 21.73%, respectively, much higher than the conventional segmented thermo-elements. The overall efficiency of the device was more than 23.72%, making it a promising technology to harvest energy from medium and high-temperature industrial components. The optimized TEG can be fabricated by SLS/SLM technology.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 147, 15 March 2018, Pages 672-680
Journal: Energy - Volume 147, 15 March 2018, Pages 672-680
نویسندگان
Yongjia Wu, Jihui Yang, Shikui Chen, Lei Zuo,