The Analysis Of The Monthly Global Solar Radiation On The Campus Of The Federal Polytechnic, Idah, Kogi State, Nigeria

Jegede. John Olu, Ale Felix, Abdullahi Ayegba, Agboola A. Olufemi

It is certain that the global solar radiation of any location will vary with time and season, thus the mode of variation of it should be known for effective planning as this radiation has many applications in the daily lives of human beings. This research work is aimed at finding out the monthly global solar radiation on the campus of the Federal Polytechnic Idah, Kogi state, with the view to providing information for effective planning on some areas like environment, solar power systems, agriculture, and other related applications within and around Idah community. The work employed the use of two models - Hargreaves- Samanni and Angstrom models, using the data of average monthly maximum and minimum temperature, and daylight hours (July1, 1983 – June 30, 2005) obtained from earthdata.nasa.gov. It was observed from the results that there was variation in the average monthly global solar radiation on the campus with the two models. It was also observed that the maximum global solar radiation value with Hargreaves- Samanni model was bigger than that with Angstrom model. However, in terms of the minimum global solar radiation value, that of Angstrom model was greater than the one with Hargreaves- Samanni model.