Морфологические особенности и элементный состав пылевого загрязнения фотоэлектрического модуля

Abstract

In this work, scanning electron microscopy and X-ray energy dispersive analysis methods were used to study the morphology and composition of dust and dirt that accumulates on the protective glass surface of the photovoltaic module. These modules are located in the local Tashkent area. It is shown here that the sizes of the inorganic particles varied from 2 μm to 75 μm, while the organic particles are up to several millimeters in size. The inorganic dust component consists of particles with different shapes, while the organic dust is characterized by a fibrous structure in which holes and micropores were found. Elemental composition studies have shown significant differences between samples of inorganic and organic origin. Analysis of the elemental composition showed a high weight fraction of oxygen, indicating its chemical bonding in compounds with silicon, calcium, carbon and iron, which suggests the presence of these elements in the form of stable oxides. It is shown that organic pollution components contains oxygen, carbon, nitrogen and phosphorus, which may indicate a high content of organic compounds in the form of plant fibers and oxides; the last two elements are characteristic of bird waste products. These studies that were carried out to determine the morphological features and to quantitatively analyze the composition of the dust and dirt that accumulates on the protective glass surface of the photovoltaic module allows us to conclude that the search for methods for preventing and cleaning this accumulation on the front surface of the modules should be targeted for particles of inorganic origin with longitudinal dimensions of up to 30 μm and at the same time it is necessary to look for ways to deterio- rate their adhesive properties. Another important conclusion in the case of organic pollution is that the organic compounds found in bird droppings are in a water-soluble form, which allows you to clean the surface of photovoltaic modules without the use of special detergents.