TY - JOUR
T1 - The extent to which a correlation between global irradiation and temperature developed for a single site can be applied to nearby sites
T2 - A case study for Israel
AU - Evseev, Efim G.
AU - Kudish, Avraham I.
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/7/1
Y1 - 2020/7/1
N2 - Solar irradiation is the critical parameter required for the design of a solar conversion system but is not always available for the site under consideration. Empirical equations based upon data available at a second nearby site have, at times, been applied to fill this void. The aim of this study is to evaluate the accuracy of an empirical correlation to estimate solar irradiation, based upon a single commonly measured parameter, average daily dry bulb temperature, and the calculated extraterrestrial irradiation, developed for a single site and applied to nearby sites. The per cent mean bias error (%MBE) for the five sites studied is in the range of −6.59 – 1.68%, whereas the per cent root mean square error (%RMSE) is in the range of 13.58–16.95%. The prediction accuracy of the empirical correlation as given by the mean absolute percentage error (MAPE) is in the range of 14.53–21.09% and the correlation coefficient is in the range of 0.917–0.925. The prediction accuracy of this relatively simple, single parameter correlation developed for a single site and then applied to five nearby sites compares favorably with that for more complicated multi-parameter generalized correlations.
AB - Solar irradiation is the critical parameter required for the design of a solar conversion system but is not always available for the site under consideration. Empirical equations based upon data available at a second nearby site have, at times, been applied to fill this void. The aim of this study is to evaluate the accuracy of an empirical correlation to estimate solar irradiation, based upon a single commonly measured parameter, average daily dry bulb temperature, and the calculated extraterrestrial irradiation, developed for a single site and applied to nearby sites. The per cent mean bias error (%MBE) for the five sites studied is in the range of −6.59 – 1.68%, whereas the per cent root mean square error (%RMSE) is in the range of 13.58–16.95%. The prediction accuracy of the empirical correlation as given by the mean absolute percentage error (MAPE) is in the range of 14.53–21.09% and the correlation coefficient is in the range of 0.917–0.925. The prediction accuracy of this relatively simple, single parameter correlation developed for a single site and then applied to five nearby sites compares favorably with that for more complicated multi-parameter generalized correlations.
KW - Dry bulb temperature
KW - Empirical equations
KW - Evaluation of prediction accuracy
KW - Global solar irradiation
UR - http://www.scopus.com/inward/record.url?scp=85081949545&partnerID=8YFLogxK
U2 - 10.1016/j.renene.2020.03.052
DO - 10.1016/j.renene.2020.03.052
M3 - Article
AN - SCOPUS:85081949545
SN - 0960-1481
VL - 154
SP - 949
EP - 954
JO - Renewable Energy
JF - Renewable Energy
ER -