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Design of Cascaded Oxide Thermoelectric Generator
| 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 |
| Journal Title: | MATERIALS TRANSACTIONS |
| 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 |
| URI: | http://hdl.handle.net/2115/77070 |
| 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)
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Submitter: 張 麗華
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