Estimation of Global Solar Radiation from Temperature Extremes: A Case Study of Hebron City, Palestine
Date
2019-02-13
Authors
Alsamamra, Husain
Journal Title
Journal ISSN
Volume Title
Publisher
Science Publishing Group
Abstract
Solar radiation is the main energy source for mankind and an accurate data of solar radiation levels for a particular
location is vital for the optimum operation of solar energy transducers such as photovoltaic cells and solar thermal collectors.
This study aimed to calibrate some of the existing models in the literature for estimating daily global solar radiation parameter
using available measured records of air temperature extremes and new models were developed based on maximum and
minimum air temperatures. Applicability of the Hargreaves model, Allen model, Bristow-Campbell model and Chen et al.
model were evaluated for computing the global solar radiation for Hebron city in Palestine. Estimated values were compared
with measured values in terms of the coefficient of determination (R2) and root mean square error (RMSE). All models provide
good estimates when compared to the accurate values with R2 0.9226 (Bristow-Campbell model) to 0.9547 (Chen et al.
model), while the proposed model provides a value of 0.9632. The RMSE value ranges from 0.7632 for Chen et al. model to
0.9211 for Bristow-Campbell model, however a lower value (0.7118) for the proposed model. This study found that the
proposed model estimates global solar radiation at the location of study better than the other models.
Description
Keywords
Solar Radiation , Air Temperature Extremes , Model Comparison , Model Validation
Citation
Husain Alsamamra. Estimation of Global Solar Radiation from Temperature Extremes: A Case Study of Hebron City, Palestine. Journal of Energy and Natural Resources. Vol. 8, No. 1, 2019, pp. 1-5. doi: 10.11648/j.jenr.20190801.11