压电
热电效应
能量收集
材料科学
机械工程
能量(信号处理)
工程物理
工程类
物理
复合材料
热力学
量子力学
作者
Y. Liu,Y.J. Cui,B. Wang,J. Yang
标识
DOI:10.1016/j.seta.2022.102845
摘要
If piezoelectric (PE) layers are bonded on the heat sink of thermoelectric (TE) generators, waste thermal and wind energy can be simultaneously converted into electricity. This study investigates the coupled thermo-electric-mechanical behavior and the effect of material parameters and structure dimensions on the energy collection performance of this hybrid TE-PE system. The model is based on Hamilton’s principle to obtai the governing equations of hybrid system. Numerical results show that output powers of TE part and PE part could be improved simultaneously when thermal conductivity of heat sink increases. If the thermal conductivity of TE material is reduced by 20%, the output power of PE part could be reduced by 7.39%, and the output power of TE part could be increased by 44.7%. With a specific length of heat sink, the output power of PE part can be increased by 41% and the output power of TE part can be reduced by 0.72% compared to that without changing the hybrid system size. Therefore, it is possible to adjust the material parameters and structure dimensions to achieve higher performance of hybrid TE-PE system. The results obtained here may offer valuable references for optimal design of hybrid TE-PE energy harvester.
科研通智能强力驱动
Strongly Powered by AbleSci AI