Estimation of Global Solar Radiation using Modifed Angstrom Empirical formula on the basis of Meterological parameters in Himalaya Region Pokhara, Nepal

  • Khem N. Poudyal Department of Engineering Science and Humanities, Pulchowk Campus, Institute of Engineering Tribhuvan University, Kathmandu
Keywords: Global solar radiation, Sunshine hour, Empirical formula, Clearness index, Regression analysis

Abstract

This research work proposes the coefficient equation of modified Angstrom   model using sunshine hour and meteorological parameters for the estimation of global solar radiation in Himalaya Region Pokhara (28.22° N, 83.32° E),  Nepal . This site is about 800.0 m above from the sea level lying just 20.0 km south of the Machhaputre Himalayas.  The model coefficients a and b obtained in this research are 0.43 and 0.23 respectively. The performance parameters of the model are: Root Mean Square Error RMSE = 0.13 MJ/m2 /day, Mean Bias Error MBE= 0.02 MJ/m /day Mean Percentage MPE= 5 percent and coefficient of determination R2 = 0.70. 

Journal of the Institute of Engineering, 2015, 11(1): 158-164

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Abstract
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Published
2016-03-29
How to Cite
Poudyal, K. (2016). Estimation of Global Solar Radiation using Modifed Angstrom Empirical formula on the basis of Meterological parameters in Himalaya Region Pokhara, Nepal. Journal of the Institute of Engineering, 11(1), 158-164. https://doi.org/10.3126/jie.v11i1.14710
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Articles