Assessment and statistical analysis of global radiation by decomposing it to its direct and diffuse components
Other Title(s)
التقييم و التحليل الإحصائي للإشعاع الكلى بتحليله إلى مركباته المباشرة و المنتشرة
Joint Authors
Pashiardis, S.
Kalogirou, S. A.
Source
Solar Energy and Sustainable Development
Issue
Vol. 10, Issue 1 (30 Jun. 2021), pp.34-64, 31 p.
Publisher
Center for Solar Energy Research and Studies
Publication Date
2021-06-30
Country of Publication
Libya
No. of Pages
31
Main Subjects
Abstract EN
In this work, hourly measurements of global solar irradiances obtained from a pyranometer and direct normal irradiances obtained from sunshine duration sensor are assessed through an extensive quality control procedure and statistical analysis on the measured and derived solar parameters for a semimountainous location using data from the last five years (2016-2020).
this information and the method suggested concerning the solar energy capture systems and energy efficiency is useful for engineers who can therefore take knowledge of the local radiation levels.
furthermore, the direct horizontal irradiance can be easily calculated and the diffuse component can be estimated from the difference of global and direct horizontal irradiances.
monthly mean hourly values of the radiation components are also estimated and shown through isolines diagrams.
representative values of global direct and diffuse irradiances for different times of the year and different hour of the day can be easily read from these diagrams.
simultaneously, a similar analysis is carried out over various solar indices estimated on both hourly and daily basis.
the derived solar indices are the clearness index for global, direct and diffuse radiation as well as the diffuse and direct fractions from global radiation.
the interrelationships between the said indices are also examined.
additionally, the BRL (Boland-Ridley-Lauret) diffuse fraction model which is a multiple predictor logistic model was tested and can be used to estimate the diffuse and later the direct radiation component.
the model is a function of clearness index (kt), the apparent solar time (AST), the solar altitude (αs), the daily clearness index (KT) and persistence parameter ψ which is an average of both a lag and lead of the clearness index.
the outcome of the model shows that it can be used to estimate successfully the diffuse radiation.
American Psychological Association (APA)
Pashiardis, S.& Kalogirou, S. A.. 2021. Assessment and statistical analysis of global radiation by decomposing it to its direct and diffuse components. Solar Energy and Sustainable Development،Vol. 10, no. 1, pp.34-64.
https://search.emarefa.net/detail/BIM-1414212
Modern Language Association (MLA)
Pashiardis, S.& Kalogirou, S. A.. Assessment and statistical analysis of global radiation by decomposing it to its direct and diffuse components. Solar Energy and Sustainable Development Vol. 10, no. 1 (Jun. 2021), pp.34-64.
https://search.emarefa.net/detail/BIM-1414212
American Medical Association (AMA)
Pashiardis, S.& Kalogirou, S. A.. Assessment and statistical analysis of global radiation by decomposing it to its direct and diffuse components. Solar Energy and Sustainable Development. 2021. Vol. 10, no. 1, pp.34-64.
https://search.emarefa.net/detail/BIM-1414212
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 63-64
Record ID
BIM-1414212