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Performance analysis of a new hybrid system composed of a concentrated photovoltaic cell and a two-stage thermoelectric generator
Sustainable Energy Grids & Networks ( IF 5.4 ) Pub Date : 2021-04-20 , DOI: 10.1016/j.segan.2021.100481
Liuyang Ma , Qin Zhao , Houcheng Zhang

A new cogeneration system model that integrates a concentrated photovoltaic cell (CPV) and a two-stage thermoelectric generator (TTEG) considering the Peltier, Seebeck and Thomson effects is proposed, where the CPV converts the inlet solar energy into electricity and heat, and the TTEG further harvests the heat for additional electricity production. Mathematical relation of the operating electric currents between TTEG and CPV is determined. Mathematical formulas for the power output and efficiency of the proposed system are specified under different operation conditions. The maximum power density (MPD) and maximum energy efficiency (MEE) of the proposed hybrid system are about 8% greater than that of the stand-alone CPV, respectively. Furthermore, the impacts of the operating temperature of CPV, solar irradiance, concentration ratio, thermocouple number ratio between top-stage and bottom-stage, total number of thermocouple and different thermoelectric materials on the hybrid system performance are revealed. The results may provide some new insights into designing such an efficient solar-to-electricity hybrid system.



中文翻译:

由聚光光伏电池和两级热电发电机组成的新型混合动力系统的性能分析

提出了一种新的热电联产系统模型,该模型结合了聚光光伏电池(CPV)和两级热电发电机(TTEG)并考虑了Peltier,Seebeck和Thomson效应,其中CPV将入口太阳能转化为电能和热量, TTEG进一步收集热量以产生更多的电力。确定了TTEG和CPV之间的工作电流的数学关系。在不同的操作条件下,指定了所建议系统的功率输出和效率的数学公式。所提出的混合系统的最大功率密度(MPD)和最大能效(MEE)分别比独立CPV的最大功率密度(MPD)和最大能量效率(MEE)高8%。此外,CPV的工作温度,太阳辐照度,浓度比,揭示了上,下级热电偶数比,热电偶总数和不同热电材料对混合系统性能的影响。结果可能为设计这种高效的太阳能-电力混合系统提供一些新的见解。

更新日期:2021-04-27
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