Ambient Temperature and Relative Humidity Impacts on a Photovoltaic Module under Niamey Climatic Conditions
Document Type : Original Article
Authors
1 Abdou Moumouni University, WASCAL, MRP CCE, Niamey Niger, BP: 10662
2 Abdou Moumouni University, ENS, Niamey Niger
Abstract
This paper presents the effect of ambient temperature and relative humidity on a monocrystalline solar module installed on the rooftop tilted with an angle of 15˚ facing South. The output current, and voltage for the photovoltaic module were measured every thirty minutes and also the ambient temperature around the PV module. In addition to these field tests data, solar radiation data from a pyranometer installed in CNES for the same angle and the same environment was used to estimate the conversion efficiency of the module. Also, the relative humidity data obtained from NASA power agroclimatology website for the same period were used. Results show that there is a negative correlation between the ambient temperature and the conversion efficiency and between the relative humidity and the PV energy output. Indeed, the slope between the ambient temperature and the conversion efficiency is estimated to be-0.49%/˚C and the one between the relative humidity and the PV energy is -4.3Wh/m2.
Keywords
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