Prediction and Assessment of Direct and Diffse Radiation Fractions for Hourly, Daily and Monthly Average Global Radiation at Diffrent Latitude Locations in Libya
Keywords:
global radiation , diffse radiation , direct radiation , diffse fraction , clearness indexAbstract
As in today´s world, the dramatic increase in world’s population, the rapid depleting of conventional fuels (Fossil Fuels) as well as the environmental impact have lef us no choice but to discover alternative energy sources. In fact, this would ensure a better and safer life on this earth and this will only be accomplished by using the best option of nonconventional and non-exhaustible sources of energy, which is the solar energy. Th current study is aimed at evaluating the availability and potentiality of direct and diffse
solar radiations in three diffrent locations in Libya within diffrent latitudes. Thee diffrent locations with diffrent values of measured daily solar radiation are opted for comparison purposes. This daily solar radiation data are used to create an hourly database of solar radiation. Th mathematical framework for the prediction and assessment has been chosen to be the Microsof Excel. The resultant monthly, daily and hourly diffse fraction relative to their clearance indexes have been in very good agreement with existing research. Moreover, one of the main fidings of this attempt is that this study has claimed and justifid the usefulness of direct radiation in operating the concentrating solar power (CSP) plants, attributed to its overall magnitude of approximately 75% of the global radiation, particularly at the summer season.
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. J. F. Orgill and K. G. T. Hollands, “Correlation Equation for Hourly Diffse Radiation on a Horizontal Surface”, Solar Energy , Vo. 9, pp 357-359, 1977. Printed in Great Britain .
. J. M. Gordon and M. Hochman, “On Correlations Between Beam and Global Radiation “, Solar Energy Vol. 32. No. 3. pp. 329-336, 1984 Printed in Great Britain.
. John D. Garrison, “A Study of Solar Irradiation Data for Six Sites “, Solar Energy Vol. 32. No. 2. pp. 237--’249. 1984 0038.-092XI84, 1984. Printed in Great Britain.
. Manuel Collares, Pereira and Arirabls, “ The Average Distribution of Solar Radiation Correlations Between
Diffse and Hourly Insulation Values”, Solar Energy Vol. 22, pp, 155-164, 1979. Printed in Great Britain.
. R. B. Benson, M. V. Paris, J. E. Sherry and C. G. Justus, “Estimation of Daily and Monthly Direct, Diffse
and Global Solar radiation from Sunshine duration Measurements”, Solar Energy Vol. 32, No. 4, pp, 523-
, 1979. Printed in Great Britain.
. G. J. T. Spitiers, H. A. J. M. Toussaint, and J. Goudriaan, “ Separating the Diffse and Direct Component of
Global Radiation and its Implications for Modeling Canopy Photosynthesis “, Agricultural and Forest Meteorology, 38 (1986) 217-229 Elsevier Science Publisher’s B. V. , Amsterdam- Printed in the Netherlands.
. K. K. Gopinathan, “ Estimation of Hourly Global and Diffse Solar Radiation From Hourly Sunshine Duration”, Solar Energy Vol. 48, No.1, pp3-5, 1992 printed in the U. S. A.
. D. G. Eras, S. A. Klein and J. A. Duffl “ Estimation of the Diffse Radiation Fraction for Hourly, Daily and Monthly – Average Global Radiation “, Solar Energy Vol. 28, No. 4, pp, 293-302, 1982. Printed in Great Britain.
. Boland J. Time series and statistical modelling of solar radiation. In: Badescu Viorel, editor. Recent Advances
in Solar Radiation Modelling. Springer-Verlag; 2008. p. 283-312.
. Tovar-Pescador J. Modeling the statistical properties of solar radiation and proposal of a technique based
on Boltzmann statistics. In: Badescu Viorel, editor. Recent Advances in Solar Radiation Modelling. Springer-Verlag; 2008. p. 55-89
. Duff J, Beckmann W. Solar Engineering of Thermal Processes. 3rd ed. USA: John Wiley and Sons; 2006.
. Teresita Larraı´n, Rodrigo Escobar*, Julio Vergara; “Performance model to assist solar thermal power plant sitting in northern Chile based on backup fuel consumption”, Renewable Energy 35 (2010) 1632-1643. Contents lists available at ScienceDirect
. F. Ahwide, A. Spena and A. El-kafrawy;”Correlation for the average daily diffse fraction with clearness
index and estimation of beam solar radiation and possible sunshine hours fraction in Sabha, Ghadames
and Tripoli- Libya”, 4th International Conference on Environmental Science and Development. ICESD2013;
Available online at www.sciencedirect.com..
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