Electrostatic Thermal Energy Harvester Using Unsteady Temperature Change

13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Yoshida, Junya^1 ; Morimoto, Kenichi^1 ; Suzuki, Yuji^1

Department of Mechanical Engineering, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan^1

关键词: Circuit modeling;    External circuits;    High permittivity;    Optimum design parameters;    Permittivity change;    Temperature changes;    Thermal generators;    Unsteady temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/476/1/012079/pdf
DOI  :  10.1088/1742-6596/476/1/012079

来源: IOP

【 摘 要 】

A model electrostatic thermal generator using unsteady temperature change is proposed. The device consists of a capacitor based on high-permittivity ceramics, and an electret layer serving as a permanent voltage source. Connecting them in series, permittivity change by temporal temperature change alters the amount of induced charges on the electrode thereby produces electric current in the external circuit. Optimum design parameters of the system have been obtained using a simplified circuit model. An early prototype using BaTiO3ceramic as the dielectric and SiO2as the electret is microfabricated, and its response is compared with the model prediction.