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Performance prediction of a new solar-driven electrochemical refrigerator
Applied Thermal Engineering ( IF 6.1 ) Pub Date : 2020-06-12 , DOI: 10.1016/j.applthermaleng.2020.115589
Qin Zhao , Houcheng Zhang , Ziyang Hu , Shujin Hou , Juncheng Guo

A new solar-driven electrochemical refrigerator model is proposed by integrating a dye-sensitized solar cell with a thermally regenerative electrochemical refrigerator. Considering various irreversible losses within the dye-sensitized solar cell, thermally regenerative electrochemical refrigerator as well as between them, mathematical formulas for the performance parameters of dye-sensitized solar cell and thermally regenerative electrochemical refrigerator as well as the solar-driven electrochemical refrigerator are derived. Based on the energy balance equation, the electric current relation between the dye-sensitized solar cell and the thermally regenerative electrochemical refrigerator are derived. The maximum cooling rate density and maximum coefficient of performance of the solar-driven electrochemical refrigerator could reach 800.47 W m−2 and 0.8, respectively. There exists an optimum thin film thickness of DSSC to optimize the system performance. A larger photoelectron absorption coefficient, specific charge capacity, isothermal coefficient or regenerative efficiency positively improves the solar-driven electrochemical refrigerator performance. However, a larger Schottky barrier, internal resistance of TRER and temperature difference between hot and cold heat reservoirs is unfavorable for the solar-driven electrochemical refrigerator performance. The obtained results may offer some guidance for the design and optimization of such an actual refrigerator.



中文翻译:

新型太阳能驱动电化学冰箱的性能预测

通过将染料敏化太阳能电池与热再生电化学制冷机集成在一起,提出了一种新的太阳能驱动电化学制冷机模型。考虑到染料敏化太阳能电池,热再生电化学制冷机之间以及它们之间的各种不可逆损失,推导了染料敏化太阳能电池,热再生电化学制冷机以及太阳能驱动电化学制冷机的性能参数数学公式。 。基于能量平衡方程,推导了染料敏化太阳能电池与热再生电化学制冷机之间的电流关系。太阳能电化学冰箱的最大冷却速度密度和最大性能系数可达到800.47 W m-2和0.8。DSSC存在最佳的薄膜厚度,可以优化系统性能。较大的光电子吸收系数,比电荷容量,等温系数或再生效率可以肯定地改善太阳能驱动的电化学制冷机的性能。但是,较大的肖特基势垒,TRER的内阻和冷热库之间的温差对太阳能驱动的电化学制冷机性能不利。获得的结果可以为这种实际冰箱的设计和优化提供一些指导。

更新日期:2020-06-27
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