4.7 Article

Experimental and numerical analyses of parameter optimization of photovoltaic cooling system

期刊

ENERGY
卷 215, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2020.119159

关键词

Photovoltaic; Temperature effect; PV cooling; Optimization; Conversion efficiency; Exergy efficiency

资金

  1. National Natural Science Foundation of China [51590911, 51878532]
  2. National Key R&D Program of China [2016YFC0700400]
  3. key research and development program of Shaanxi Province [2018ZDCXL-SF-03-01]

向作者/读者索取更多资源

The study investigates the structural layout and parameter optimization of a PV cooling system which effectively reduces the surface temperature, increases power generation efficiency, and achieves maximum conversion and exergy efficiencies through exponential relationships with mass flow rate. Economic calculations show that the PV cooling system can increase power generation by 7%-15% in typical cities in China.
When the temperature of photovoltaic (PV) increases, the power generation efficiency decreases almost linearly. The temperature effect caused by high temperature has become an important factor that hinders the production of PV. In this study, the structural layout and the parameter optimization of PV cooling system are conducted. For this purpose, a thermal-electric coupled model of PV cooling system has been set up. Using the mathematical model, the effects of various parameters, such as the type of tube, tube diameter, tube spacing, water inlet temperature and flow velocity are analyzed. The results show that the average surface temperature of PV decreases with the increase of tube diameter and flow velocity and the decrease of tube spacing and water inlet temperature. Furthermore, theoretical parametric values for the optimized configuration of the PV cooling system are obtained. The experimental results show that the optimized PV cooling system can effectively reduce the surface temperature, which is about 47.0 degrees C lower than that of the non-cooled system. Moreover, the conversion efficiency and the exergy efficiency are exponentially related to mass flow. When the mass flow rate is 0.04 kg/s, the conversion and exergy efficiencies achieved the maximum values of 11.9% and 12.4%. When the water inlet temperature is 10 degrees C, the conversion and exergy efficiencies achieved the maximum values of 11.6% and 11.7%, respectively. Finally, the economic calculations were carried out in three typical cities in China. The results show that the PV cooling system can increase power generation by 7%-15%. (c) 2020 Elsevier Ltd. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据