Studying the Influence of Different Cooling Techniques on Photovoltaic-Cells Performance

Abstract

The effect of temperature on the electrical parameters of photovoltaic cells is negative. The efficiency of photovoltaic cells can be enhanced by cooling which the temperature is considered as one of the main factors that affect negatively on the output power. This study was carried out to compare between three different cooling techniques and determine their effects on the output power. The first, cooling techniques is applied, the panel front surface cooled using the water spray on the surface. The second, the panel back surface cooled by extended fins. The third, the panel back surface cooled by extended fins with fans. As expected, the results of comparisons different methods using in cell cooling showed that, there is an increase in the efficiency of photovoltaic cells with the drop in cell temperature, which helps to increase the rate of photovoltaic cell performance and output power. In these experiments the output power increased 2.5 %. At the first technique using water spray method the temperature dropped 7 degrees. At the other two methods the temperature dropped 3 degrees less than the panel without cooling. The used pump and fans were power consuming. So, the most effective method was cooling using the fins.

Impact of Temperature, Solar Irradiation and Wind Dust on the Production of Solar Energy and the Assessment of Water Quality Used for Cooling and Cleaning Photovoltaic Panels

“…This essentially consists of installing fins on the back of the photovoltaic panels to improve heat transfer by natural convection and radiation [13]. In addition, cooling techniques are studied and compared in order to select the most effective approach for the performance of photovoltaic systems [14], [15], [16], [17], [18]. All researchers have concluded that the temperature of the photovoltaic module is an important parameter that strongly influences its efficiency [19], [20], [21], [22].…”

A parametric study of a photovoltaic panel with cylindrical fins under still and moving air conditions in Iraq

“…The total PV power improvements due to an aluminum foil reflector and a water sprinkling system were about 22.75% to 38.55% 15 . Ali et al 16 studied the effects of three cooling systems, namely water spray system on the front surface, fins on the back surface, and fins with fans on the back surface on the output power of PV panel. In all cooling systems, the output power improved by 2.5% from the total power generated by the PV panel during the experiments.…”