Development of the thermoelectric system using porous media

使用多孔介质的热电系统的开发

• 批准号: 11555176
• 负责人: YASUDA Hideyuki
• 金额: $ 4.42万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11555176/
• 关键词: thermoelectric energy conversion; porous medium; thermoelectric materials; energy conversion; heat exchange; 強調成長; 協調成長

It is important to improve both of the materials properties and the thermoelectric device/system performance for application of the thermoelectric energy conversion system. This study focused on enhancement of the power density by improving exchange efficiency between the device and cooling/heating fluids, (I) Fabrication of the porous media, (ii) Production of the partially porous devices/modules, and (iii) Evaluation of the porous devices/modules were studied.Firstly, a new process to fabricate porous media using brittle thermoelectric materials was developed. By using the process, partially porous thermoelectric devices and modules were fabricated.Performance of the developed thermoelectric devices was evaluated. The experimental results indicated that enhancement of the heat exchange by using porous media was beneficial when heating/cooling sources are gas which thermal conductivity was low. In the case, power density of the partially porous device may be 10 times higher than that of the conventional type devices. For example, porous thermoelectric devices using FeSi2 exhibited higher power density by optimizing physical properties of porous media.

提高材料性能和热电器件/系统的性能对热电能量转换系统的应用具有重要意义。本研究主要围绕提高器件与冷热流体的交换效率以提高功率密度这一问题展开，主要研究内容包括：（1）多孔介质的制备;（2）部分多孔器件/模块的制备;（3）多孔器件/模块的评价。利用该工艺制备了部分多孔热电器件和模块，并对所研制的热电器件进行了性能评价。实验结果表明，当加热/冷却源为导热系数较低的气体时，采用多孔介质强化换热是有益的。在这种情况下，部分多孔装置的功率密度可以比常规类型装置的功率密度高10倍。例如，通过优化多孔介质的物理性质，使用FeSi 2的多孔热电装置表现出更高的功率密度。

项目成果

H.Yasuda: "Evaluation of a Thermoelectric Device Utilizing Porous Medium"Proc.MRS symp.. Z11.2.1-Z11.2.6 (2001)

H.Yasuda：“利用多孔介质的热电装置的评估”Proc.MRS symp.. Z11.2.1-Z11.2.6 (2001)

Hideyuki Yasuda: "Evaluation of a Thermoelectric Device Utilizing Porous Medium"mat. Res. Soc. Symp. Proc.. 626. Z11.2.1-Z11.2.6 (2000)

Hideyuki Yasuda：“利用多孔介质的热电装置的评估”垫。

Kimitaka Nomura: "Improvement of Power Density by Optimizing Device Shape"The 4th Pacific Rim Int. Conf. on Advanced Mat. & Processing(PRICM4). 2181-2184 (2001)

野村公隆：“通过优化器件形状提高功率密度”第四届环太平洋国际研讨会

H.Yasuda: "Fabrication of Porous Media by Semisolid Processing using Laser Irradiation"Mater.Trans.. 42. 309-315 (2000)

H.Yasuda：“利用激光辐照通过半固体加工制造多孔介质”Mater.Trans.. 42. 309-315 (2000)

H.Yasuda: "Estimation of Generated Power of a Thermoelectric Device Utilizing Porous Medium"Materials Transactions, JIM. 40. 447-450 (1999)

H.Yasuda：“利用多孔介质估计热电装置的发电功率”Materials Transactions，JIM。