In the present work, a comprehensive thermodynamic and exergoeconomic comparison between concentrated photovoltaic-thermoelectric cooling (CPV-TEC) and concentrated photovoltaic-thermoelectric generation (CPV-TEG) systems was introduced and explored, aiming to actively investigate the energy harvesting potential of the photoelectric-thermoelectric cooling and power generation processes. Transitional characteristics of thermoelectric conversion in concentrated photovoltaic-thermoelectric hybrid (CPV-TEH) system have been outlined through multiple evaluation indicators, including output electricity, cell temperature, thermodynamic efficiency, exergy destruction and unit exergy cost under various decision parameters. Furthermore, operating mode and conversion conditions of thermoelectric device in CPV-TEH system have been sensitively identified to obtain the dual action mechanism of cooling and power generation sequentially. Theoretical models have been compared and validated well with former published results. Results indicate that the operating mode of thermoelectric device could be fully converted from TEG to TEC when the operating current is around 0.27 A; the minimum unit exergy costs are respectively found to be 0.263 $/kwh, 0.148 $/kwh and 0.113 $/kwh for CPV-TEG system and 0.266 $/kwh, 0.152 $/kwh and 0.118 $/kwh for CPV-TEC system at CG = 1, 2, and 3 kW/m². Present research may be helpful for the design and optimization of the CPV-TEH system to harvest the thermal and electric energy from the sunlight, thus enhancing its energy conversion efficiency.

在本工作中，介绍并探索了集中式光伏热电冷却（CPV-TEC）和集中式光伏热电发电（CPV-TEG）系统之间的综合热力学和能效比较，旨在积极研究光电的能量收集潜力-热电冷却和发电过程。通过多个评估指标，概述了光伏-热电混合（CPV-TEH）系统中热电转换的过渡特性，包括在各种决策参数下的输出电，电池温度，热力学效率，火用破坏和单位火用成本。此外，敏感地确定了CPV-TEH系统中热电设备的运行模式和转换条件，从而顺序获得冷却和发电的双重作用机理。理论模型已经与以前发表的结果进行了比较和验证。结果表明，当工作电流约为0.27 A时，热电设备的工作模式可以从TEG完全转换为TEC；CPV-TEG系统的最低单位火用成本分别为0.263美元/千瓦时，0.148美元/千瓦时和0.113美元/千瓦时，CPV-TEC系统为0.266美元/千瓦时，0.152美元/千瓦时和0.118美元/千瓦时 结果表明，当工作电流约为0.27 A时，热电设备的工作模式可以从TEG完全转换为TEC；CPV-TEG系统的最低单位火用成本分别为0.263美元/千瓦时，0.148美元/千瓦时和0.113美元/千瓦时，CPV-TEC系统为0.266美元/千瓦时，0.152美元/千瓦时和0.118美元/千瓦时 结果表明，当工作电流约为0.27 A时，热电设备的工作模式可以从TEG完全转换为TEC；CPV-TEG系统的最低单位火用成本分别为0.263美元/千瓦时，0.148美元/千瓦时和0.113美元/千瓦时，CPV-TEC系统为0.266美元/千瓦时，0.152美元/千瓦时和0.118美元/千瓦时CG  = 1、2和3 kW / m ²。当前的研究可能有助于CPV-TEH系统的设计和优化，以从阳光中收集热能和电能，从而提高其能量转换效率。