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Development of thermoelectric power system utilizing waste heat from vehicles

利用车辆废热开发热电系统

基本信息

批准号：
14380227
负责人：
MIKI Toshikatsu
金额：
$ 8.64万
依托单位：
Yamaguchi University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

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 rangeUsing 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 materialsFor 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 moduleUnit-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).

本课题的研究目的是实现汽车废热的热电发电系统。1）中温温差发电组件的组装工艺采用金属箔或贮氢金属箔，实现了热电元件（CoSb_3、Yb-CoSb、Bi_2Te_3）与金属Cu的牢固欧姆连接。结合层对Cu元素的迁移起着阻挡作用。2）热电材料的工艺控制和电子态计算为了提高热电材料的品质因数，对CoSb系列、PbTe系列和silliside系列热电材料的烧结工艺进行了研究。此外，对CoSb和水飞蓟素的电子态的理论计算不仅解释了实验结果，而且为笼形化合物的制备提供了有效的方法。3）热电模块单元式换热器设计了热电模块单元式换热器，以提高热电模块的热传导性能。通过热电性能和热传导的数值模拟，满足了换热器的基本性能要求。这是由于采用了合适的热回收翅片（在高温侧）和导热凝胶片（在低温侧）。

项目成果

期刊论文数量（70）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

T.Okane, S.Fujimori, K.Mamiya, J.Okamoto, Y.Muramatsu, A.Fujimori, Y.Nagamoto, T.koyanagi: "Photoemission spectroscopy of the filled skutterudite compound YbFe_4Sb_<12>"Journal of Physics-Condensed Matter. 15・28. S2197-S2200 (2003)

T.Okane、S.Fujimori、K.Mamiya、J.Okamoto、Y.Muramatsu、A.Fujimori、Y.Nagamoto、T.koyanagi：“填充式方钴矿化合物 YbFe_4Sb_<12> 的光发射光谱”Journal of Chemistry-Condensed 15・28。S2197-S2200（2003）