• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of green energy >A strategy for optimal energy conversion by pyroelectricity
【24h】

A strategy for optimal energy conversion by pyroelectricity

机译：通过热电实现最佳能量转换的策略

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The pyroelectric effect has been used for solar thermal energy harvesting to convert temporal temperature fluctuations into electrical energy to fully utilize abundantly available waste heat. A thicker pyroelectric cell is favorable when generating a higher induced voltage for a longer working period at a higher temperature. However, a thinner pyroelectric cell is favorable when generating a higher induced charge per period for a shorter working period at a lower temperature. Hence, integrating a thicker with a thinner pyroelectric cell is attempted to try to extend applications and increase the efficiency of pyroelectric harvesters when heat sources possess longer working periods and greater thermal fluctuations. The decline rate of the induced current for two PZT cells with the same thicknesses of 170 mu m in a parallel circuit greatly increased when the working period was greater than 8 s. Two PZT cells with the same thicknesses of 420 mu m in a parallel circuit could generate a larger induced charge per period than those of 170 mu m in the parallel circuit when the working period was greater than 14 s. The working period was not taken into account when using the thicker PZT cells in the series or parallel circuits to harvest the induced charge. Moreover, two PZT cells with various thicknesses of 170 and 420 mu m in a series possessed a moderate induced voltage and current benefiting stored voltage in a lower R-L of 10M omega.
机译：热电效应已用于太阳能热能的收集，以将温度的暂时波动转换为电能，以充分利用大量可用的废热。当在较高温度下在较长的工作时间段内产生较高的感应电压时，较厚的热释电电池是有利的。然而，当在较低温度下以较短的工作周期在每个周期内产生较高的感应电荷时，较薄的热释电电池是有利的。因此，当热源具有较长的工作时间和较大的热波动时，试图将较厚的热电电池与较薄的热电电池集成在一起以尝试扩展应用并提高热电收集器的效率。当工作周期大于8 s时，两个并联170微米相同厚度的PZT电池的感应电流下降率大大提高。当工作周期大于14 s时，两个并联电路中厚度为420μm的PZT电池每个周期所产生的感应电荷要大于并联电路中170μm的每个周期。在串联或并联电路中使用较厚的PZT电池收集感应电荷时，未考虑工作时间。此外，两个厚度分别为170和420μm的PZT电池系列具有适中的感应电压和电流，在10MΩ的较低R-L下有益于存储电压。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号