الفهرس | Only 14 pages are availabe for public view |
Abstract Photovoltaic solar energy (PV) is considered as one of the most promising environmentally friendly renewable energy sources. Performance of PV systems is affected by many environmental factors such as solar irradiation, humidity, ambient temperature, wind speed, and dust accumulation. Dust accumulation is one of the natural phenomena that leads to a significant decrease in the efficiency of the photovoltaic solar system, in the sense that it reduces the transmittance of the solar cell glazing. Rate of dust accumulation depends upon the dust properties (chemical properties, size, shape,…etc.) as well as on the site climatic conditions such as humidity and wind speed. Moreover, the surface finish, and the tilt angle also affect the rate of dust accumulation. In this thesis, the work presents the results of a study carried out at Fayoum University with a detail experimental procedure that divided into three aspects: (1) designing a systematic experiment to accurately characterize the influence of dust pollutant type on the performance of monocrystalline and polycrystalline PV cells (indoor experiment), reviewing and comparing improved models for particle. |