Obtaining reliable results concerning the expected effect of regional air pollution on tilt fixed latitude PVs' performance at High polluted Region in the world

摘要

Solar energy can be collected to produce electricity by a variety of methods. Among these methods, photovoltaic PV systems have shown great success due to many reasons. The annual total solar is yield at the optimal tilt surface. Implementations of PV systems have shown that their reliability and efficiency depend on many factors, the dominant being geographical (latitude, longitude, and solar intensity), environmental (temperature, wind, humidity, pollution, dust, rain, etc.) and the type of PV used. Dust is the lesser acknowledged factor that significantly influences the performance of the PV installations. The important of this study came due to the transfer of large scale PV technology to the desert area in Egypt. This area is hot and dusty most of the time and dust represent the main barrier to PV utilization. The energy outputs and efficiencies were simulated using a computer package to predict energy use and forecast energy use improvements in an operating data center. This paper provides an appraisal on the current status of research in studying the radiation damage by dust on PV system performance and identifies challenges to further pertinent research. A framework to understand the various factors that govern the settling assimilation of dust and likely mitigation measures have been discussed in this paper. Cement dust is considered the main source of pollution. This dust is often present in the atmosphere in the Helwan area and is shown to reduce both the short circuit current and the open circuit voltage when deposited onto the surface of photovoltaic cells. The rate of decrease in these parameters depends mainly on the rate of dust deposition. Degradation in efficiency for a-Si is 66% after six months without panel cleaning. The decrease in efficiency for Poly-Si is 9% due to the suspended particles with panel cleaning.