Pollution loss and its impact on solar energy and photovoltaic modules

The power output of the panels is highly dependent on the irradiance directly reaching them. Dirt, that is, the accumulation of soil and dust particles on the panel, will hinder the quantum of sunlight reaching the panel and affect the PV performance.

According to some researchers, pollution will basically lead to the shadow of the panel; That is, it blocks the sun's rays from reaching the panel. This kind of coloring can be divided into two categories - soft coloring and hard coloring. Because pollution, fog, fog and fog affect the irradiance received by the panel, it is called soft coloring. Shading is due to dust particles, soil particles and bird droppings. Both types of shading can affect panels and their performance in different ways.

One. Before we study which factors contribute to or hinder pollution, it is important to understand how pollution affects panels and panel performance.

Degraded panel output: The dust and dirt accumulated on the panel will cover the photovoltaic cells below it. This will reduce the voltage and current output of the panel. On the other hand, soft pollution will not have any observed effect on the voltage, but will affect the current output of the panel. The combined result of the current and voltage drop will be a reduction in the power output of the panel.

Damage to the panel: the hard pollution caused by the deposition of dust particles and soil will also cause the panel to be on the hard sediment near its frame, which is usually called cementation. As a result, the panel may be permanently damaged.

Economic consequences: The reduction of panel output will lead to the reduction of power generation of the plant. If ignored for a long time, pollution will significantly reduce the quantum of each produced by solar power plants. This reduction will also lead to payment of deviation costs and further financial losses.

B. Factors affecting the pollution rate:

Geographical composition: The degree of pollution depends largely on the adjacent area where the panels are installed. The terrain is dusty, and the possibility and speed of pollution are higher. For example, in the desert, pollution will be much faster than in cities.

Wind speed: Wind is the main factor disturbing dust and soil particles. The stronger the wind, the faster the panels will get dirty.