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Design of Cascaded Oxide Thermoelectric Generator

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Mater. Trans. 49(7) 1675.pdf188.76 kBPDFView/Open
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Title: Design of Cascaded Oxide Thermoelectric Generator
Authors: Zhang, Lihua Browse this author →KAKEN DB
Tosho, Tsuyoshi Browse this author
Okinaka, Noriyuki Browse this author →KAKEN DB
Akiyama, Tomohiro Browse this author →KAKEN DB
Keywords: heat recovery
cascaded thermoelectric generator
oxide thermoelectric materials
energy conversion efficiency
Issue Date: 1-Jul-2008
Publisher: The Japan Institute of Metals
Volume: 49
Issue: 7
Start Page: 1675
End Page: 1680
Publisher DOI: 10.2320/matertrans.MRA2008085
Abstract: This paper describes the design of two- and three-stage cascaded oxide thermoelectric generators (TEGs) for high-temperature heat recovery using reported data to optimize energy conversion efficiency. We used the general intermetallic compounds Bi2(Se,Te)3 and (Bi,Sb)2Te3 for the low-temperature stages and oxides of TiO1.1, La-doped SrTiO3, NaxCo2O4, and Al-doped ZnO for the higher-temperature stages. A two-stage TEG with TiO1.1 as the p-type material and La-doped SrTiO3 as the n-type material was found to have the highest efficiency at heat-source temperatures below 852 K, while the three-stage TEG was slightly more efficient than the two-stage TEG for heat-source temperatures above 852 K. For the three-stage TEG, the optimal boundary temperature of the second and third stages was calculated to be 698 K; at this temperature, the maximum energy conversion efficiency, 13.5%, was obtained at a heat-source temperature of 1223 K. The results showed that the designed two- and three-stage cascaded oxide TEGs have high potential for heat recovery from high-temperature waste.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 張 麗華

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