一个灵活的热电发电机的有限元分析和设计,具有圆隙结构
Chang Li1, Junfeng Jin1, Wei Cao1
1The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China.
ACS applied materials & interfaces
|April 26, 2024
概括
本研究介绍了一种具有圆间隙结构的新型灵活热电发电机 (f-TEG),提高了可穿戴自动供电设备的灵活性和能量转换效率.
科学领域:
- 材料科学 材料科学 材料科学
- 收集能源 收集能源
- 热电学是一种热电学.
背景情况:
- 灵活的热电发电机 (f-TEGs) 是自动供电可穿戴电子产品的关键.
- 目前的f-TEG经常使用刚性热电 (TE) 脚,限制了灵活性和效率.
- 优化TE腿部结构对于提高性能至关重要.
研究的目的:
- 设计和优化灵活的热电发电机 (f-TEG),提高灵活性和能量转换效率.
- 为了研究圆间隙结构对f-TEG性能的影响.
- 分析横向和垂直热阻在优化f-TEG输出中的作用.
主要方法:
- 采用一个准三维热模型来设计f-TEG具有圆间隙结构 (E/A-RhTEG).
- 通过模拟和实验制造验证了优化性能.
- 介绍了横向和垂直的热阻,以解释性能优化原则.
主要成果:
- 与传统的矩形空隙结构 (E/A-ReTEG) 相比,E/A-RhTEG显示了更好的能量转换效率.
- 模拟显示,在30K的25np对E/A-RhTEG的能量转换效率增加了6.28%,输出功率增加了3.09%.
- 实验结果显示,制造E/A-RhTEG.的输出电压 (127.07mV在30K) 的性能提高了4.06%.
结论:
- 圆间隙结构显著提高了灵活的热电发电机的性能.
- E/A-RhTEG设计为高效,灵活的热电能收集提供了一个可行的途径.
- 开发的f-TEG可以集成到自动供电系统中,即使在曲面上也是如此.
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