Akademik Veri Yönetim Sistemi
1st BİLSEL INTERNATIONAL TRUVA SCIENTIFIC RESEARCHES and INNOVATION CONGRESS 25-26 AUGUST 2023, ÇANAKKALE/TÜRKİYE, Çanakkale, Türkiye, 25 - 26 Ağustos 2023, cilt.1, sa.2, ss.147-155
Solar power plants (SPPs), whose use is increasing day by day, have a very important place as a renewable energy source. The solar energy potential in our country, especially in the Southeastern Anatolia region, makes it important to generate electricity using Photovoltaic (PV) batteries. Unfortunately, during the operation of PV cells, about 15% of solar adiation is converted into electrical energy and the rest into heat energy. The most important obstacle affecting the front surface of PV panels formed by PV cells is overheating caused by high ambient temperature and excessive solar radiation. Overheating significantly reduces the efficiency of PV cells.It also shortens the lifetime of solar panels. Assuming that the solar radiation varies very little, the Power-Current (P-I) characteristic curve shows that an increase in the panel surface temperature will cause a decrease
in the electrical power generated. Due to the high ambient temperature, the variation of the efficiency of solar panels with temperature is high in April-October. As a matter of fact, it has been observed that the efficiency of the solar panel decreases by approximately 13% when the ambient temperature in the Southeastern Anatolia region is around 30 degrees.
In practice, techniques such as air cooling, water cooling, gas cooling are generally used to ensure the operation of PV modules at low temperatures. The simplest and most economical of these techniques is water cooling of the solar panel. The thermal energy obtained from PV modules can be used in low temperature applications
such as water and air cooling.In this study, solar panel cooling techniques are investigated. For the water cooling system, which is the simplest and most economical technique, a front cooling and back cooling system using a 250 W PV panel was experimentally established. The energy efficiency of front and back cooling for the same temperature variation
is investigated experimentally. From the experimental data, it is observed that the front cooling technique is more efficient.