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Predicting performance of thermal-electrical cycles in pyroelectric power generation

机译:预测热电发电中热电循环的性能

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摘要

A method is proposed to predict the power generation performance of a pyroelectric generator (PEG) for waste-heat recovery systems in which an external electric field is applied to a ferroelectric material in synchrony with rapid temperature changes. The net generated energy densityN(D)of the PEG at any temperature and electric field is predicted for two thermal-electrical cycles (including the Olsen cycle). This is done by approximating the dependence of the polarization density on temperature and electric field using hysteresis loop measurements. The difference between the predicted and measured values ofN(D)was less than 15%. This method could be used to screen promising candidate materials for PEGs.
机译:提出了一种方法,以预测用于废热回收系统的热电发电机(PEG)的发电性能,其中外部电场在具有快速温度变化的同步的同步施加到铁电材料。在任何温度和电场处的净生成的能量密度,预测两个热电循环(包括Olsen循环)。这是通过近似使用滞后回路测量来近似偏振密度对温度和电场的依赖性来完成的。预测和测量值的差异为Nn(d)的差异小于15%。该方法可用于筛选佩格斯的承诺候选材料。

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