Impact of Environmental Factors on the Working of Photovoltaic Cells

Abstract

This paper discussed the stimulation of diffused and global sun rays on the site of Pakistan, striking the PV cell, is done for varying environmental conditions. This is done with the help of model used for spectral transmittance. Different effects are examined including efficiency of various types of PV cells, variation in whole intensity and the distribution of spectrum on short circuit current. The outcome shows an inverse relationship between turbidity and short circuit current. In the case of global sun rays the reduction of short circuit current due to turbidity is 4.4% for monocrystalline PV cell, 4.8% for multicrystalline PV cell and 7.33% for amorphous PV cell but in case of diffuse sun rays it increases. The relationship between short circuit current and water vapors is also inverse but this effect shows only in case of global sun rays. The decrement in the short circuit current due to water vapor is 4.6% for moncrystalline, 4.39% for multicrystalline, and 0.19% in case of amorphous. The increment in the air mass causes decrement in the short circuit current for various kinds of PV cells. But in case of monocrystalline and multicrystalline there is an increment in efficiency due to air mass effect while the efficiency of amorphous decreases.