Abstract

For a long time, electricity is supplied by means of firing the fossil fuels in thermal power plants. Now, it is well-known that the activity has many environmental and health issues, which are sharply menace the future of earth and humanity. Photovoltaic (PV) system is one of the popular renewable types of energy generation, which is available in most parts of the earth. Unfortunately, temperature rise in a PV module, leads to a significant reduction in its electrical efficiency. In this paper, two methods of wind blowing and mounting fins are considered separately and simultaneously, to overcome the mentioned weak-point. The wind velocity is set to 2 km/h. So, four cases are assessed, experimentally. As results, it was revealed that wind blowing of 2 km/h is more effective than fins in cooling PV module, so that, it can create more than 15 °C lower temperature than mounting fins. The mentioned temperature reduction leads to enhance the electrical efficiency and output power by 2.4% and 21.7%, respectively. In order to show the accuracy of results, all experimental outcomes in electrical efficiency were compared with the analytical formula. Moreover, the environmental evaluation of commissioning a 10 kW PV power plant with the proposed cases are reported, too.

摘要

长期以来，电力是通过火力发电厂燃烧化石燃料来提供的。现在，众所周知，该活动存在诸多环境和健康问题，严重威胁着地球和人类的未来。光伏（PV）系统是流行的可再生能源发电类型之一，在地球的大部分地区都可以使用。不幸的是，光伏模块的温度升高会导致其电效率显着降低。本文分别同时考虑吹风和安装翅片两种方法，以克服上述薄弱环节。风速设置为 2 km/h。因此，通过实验评估了四个案例。结果表明，在冷却 PV 模块方面，2 km/h 的风速比翅片更有效，因此，它可以产生比安装散热片低 15 °C 以上的温度。上述温度降低导致电效率和输出功率分别提高了 2.4% 和 21.7%。为了显示结果的准确性，将电效率的所有实验结果与解析公式进行了比较。此外，还报告了 10 kW 光伏电站投产的环境评估以及建议的案例。