Abstract
The availability of solar energy in any location on the earth surface is affected by time of the day and seasonal variations, and in some instances loads vary in accordance with seasons also. Therefore, accurate knowledge of the quantity available at any particular location and time and the dynamics is imperative for solar power system design and installation. In this study, analysis of global solar irradiance on horizontal surface was carried out with the consideration of the prevailing atmospheric conditions and seasons in Minna, Nigeria. Li-200SA MA200 pyranometer sensor, incorporated with CR1000 software-based data logging system with computer interface, placed horizontally at the same test plane and at about three meters of height were employed to measure global solar irradiance. The logger was programmed to measure and log solar irradiance at every 5 minutes intervals from 8:00 am to 7:00 pm local time for the duration of 3 years from 2016 to 2018. Data analysis was carried out to obtain the hourly, daily, monthly and yearly global irradiance dynamics on horizontal surface using Excel spread sheet. The result shows seasonal variations.
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