Comparative Study on the Performance of a Locally Fabricated Solar Radiation Meter

Research areas: Year: 2013
Type of Publication: Article Keywords: Solar Radiation Meter, Calibration
Authors:
  • Udeajah, V. N. and Obini E.E
Journal: Journal of Engineering and Energy Research Volume: 3
Number: 1 Pages: 7-32
Month: June
Abstract:
The comparative assessment of the performance of a locally fabricated solar radiation meter in Abakaliki has been investigated through its output got from measurement of the global solar radiation for five years (2007 till 2012). The measurements in millivolts were converted to watt per metre square (W/m2) using 73millivolts being equal to 1000watts. The reading of the locally made solar radiation meter was compared with the standard, einstralnagssensor spektron 100 solar meters at the University of Nigeria, Nsukka through simultaneous reading taking process. The solar radiation meter was made by coupling a locally available solar panel with switch, light emitting diode (LED) and two meters connected in series. The output for the randomly selected days were analysed statistically using the student’s t-distribution and curve fitting methods and average calibration constant got too. Seven days were picked randomly within a month and analysed using 95 per cent confidence interval in a two tailed test of 0.025 and they were acceptable. It showed that the locally fabricated solar radiation meter could comfortably compete with the standard solarimeter since the deviations were rather negligible.