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Hindi Expert Opinion on Environmental BiologyISSN: 2325-9655
Tegenu Argaw Woldegiyorgis Author
Subjects of specialization
Affiliation
Predicting Global Solar Radiation
Department of Physics, College of Natural Science, Wollo University, Dessie, Ethiopia, Department of Physics, College of Natural Science, Wollo University, Dessie, Ethiopia
Biography
Tegenu Argaw Woldegiyorgis, is currently working in Department of Physics, College of Natural Science, Wollo University, Dessie, Ethiopia, Department of Physics, College of Natural Science, Wollo University,Dessie, Ethiopia. Research interest - Predicting Global Solar Radiation. He has a good track record in managing and developing local teams and competences as well as in growing a profitable research.
Publications
Research Article Open Access
Performance Evaluation and Comparison of Models for Predicting Global Solar Radiation in Ethiopia: A Case Study of Two sites
Author(s): Tegenu Argaw Woldegiyorgis
Accurate estimation of the global solar radiation on a horizontal surface at a place is essential to design and check the performance of solar energy devices. This study focused on evaluating monthly average daily global solar radiation (DGSR) and monthly average global solar radiation (GSR), as well as comparing the six models used in the estimations, over Lalibela and Sirinka in Northern Ethiopia. The best models were selected according to the values of statistical performance evaluation. For Lalibela the best model to estimate DGSR was LO-model with values of MBE=-0.092 KWh/m2day, RMSE= 0.402 KWh/m2day, MPE=-1,969 % and for Sirinka- GM model with values of MBE=-0.575 KWh/m2day, RMSE= 0.643 KWh/m2day, MPE=-9.764 %. The best estimator of monthly average GSR over Lalibela was AP model w... view more»
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