| Project/Area Number |
14380227
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
エネルギー学一般
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| Research Institution | Yamaguchi University |
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Principal Investigator |
MIKI Toshikatsu Yamaguchi University, Faculty of Engineering, Professor, 工学部, 教授 (70091212)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUURA Mitsuru Yamaguchi University, Faculty of Engineering, Professor, 工学部, 教授 (60091211)
KOYANAGI Tsuyoshi Yamaguchi University, Faculty of Engineering, Professor, 工学部, 教授 (90178385)
MURATA Takuya Yamaguchi University, Faculty of Engineering, Research Associate, 工学部, 助手 (70263796)
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| Project Period (FY) |
2002 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥13,500,000 (Direct Cost: ¥13,500,000)
Fiscal Year 2004: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2003: ¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 2002: ¥8,000,000 (Direct Cost: ¥8,000,000)
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| Keywords | thermoelectric power system / module / unit-type heat exchanger / theoretical calculation / joint / 電熱発電システム / 発電モジュール |
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| Research Abstract |
This research has conducted with aiming to realize thermoelectric power system utilizing vehicle waste heat. Obtained results both from experimentally and theoretically are summarized as follows.
1)Assembling process of thermoelectric power module for mid-temperature range
Using metal-hydrides or hydrogen-accumulated metal foil, firm and Ohmic joint has been achieved between thermoelectric elements (CoSb_3, Yb-CoSb, or Bi_2Te_3) and Cu metal. The joint layer functioned as a barrier for Cu elements migration. Joint process between thermo-conductive AlN ceramics and Cu was also examined using Ti-metal foil, working against the heat stresses arising at the joint.
2)Process control and calculations for electronic states of thermoelectric materials
For improving the figure of merit of the thermoelectric materials, sintering processes of CoSb series, PbTe, and silliside series were examined. Besides, theoretical calculations for the electronic states of CoSb and silliside not only interpreted the experimental results, but also suggested an effective process for clathrate compounds.
3)Unit-type heat-exchanger with thermoelectric module
Unit-type heat-exchanger with thermoelectric module was designed to improve the heat conduction through the thermoelectric module. According to the numerical simulation for the thermoelectric property and the heat conduction, basic feature of the heat-exchanger was satisfied. This is due to the employment of the suited heat recovery fins (at high temperature side) and a thermo-conductive gel-sheet (at low temperature side).
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