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Daily Clearness Index Profiles and Weather Conditions Studies for Photovoltaic Systems [PDF]
Energy Procedia, 2017 The increasing number of distributed photovoltaic (PV) systems connected to the power grid has made system planning and performance evaluation a challenging task.
Malcolm McCulloch +2 more
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Refractive index matching and clear emulsions
International Journal of Cosmetic Science, 2005Refractive index (RI) matching is a unique way of making clear emulsions to meet market trends. However, RI matching has not been sufficiently investigated in terms of physical principles and methodologies. Snell's law (n2 sin r2 = n1 sin r1) is applicable to cosmetic emulsions.
James Ziming, Sun +2 more
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An index of clear air turbulence
Quarterly Journal of the Royal Meteorological Society, 1965AbstractAn index is derived for the intensity of turbulence in a sloping baroclinic layer. Preliminary estimates of this index from ordinary meteorological information suggest that the index is proportional to turbulent energy and that it discriminates better between regions of varying intensity than vertical wind shear or Richardson number.
D. Colson, H. A. Panofsky
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International Journal of Sustainable Energy, 2016 The Clearness Index and the ratio between diffuse and global irradiance for different time scales are used to define a taxonomy for sky conditions and to study patterns to provide information for production-oriented probabilistic risk analysis studies ...
Diego Pavanello, Scott Smith
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Fluctuations in Instantaneous Clearness Index: Analysis and Statistics
Solar Energy, 2007Abstract Solar radiation is characterized by short fluctuations introduced by passing clouds. An analysis of these fluctuations with regard to solar energy applications should focus on the instantaneous clearness index. Its probability distribution for a given mean clearness index is, as a first approximation, independent from the season and partly ...
Ronnie Belmans
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Effect of the Relative Optical Air Mass and the Clearness Index on Solar Erythemal UV Irradiance
Journal of Photochemistry and Photobiology B: Biology, 2014 This paper analyses the effects of the clearness index (Kt) and the relative optical air mass (mr) on erythemal UV irradiance (UVER). The UVER measurements were made in Valencia (Spain) from 6:00 am to 6:00 pm between June 2003 and December 2012 and ...
María P Utrillas +2 more
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Prediction of Solar Radiation Parameters Through Clearness Index for Izmir, Turkey
Energy Sources Part A Recovery, Utilization, and Environmental Effects, 2002 The need for meteorological parameters is essential in the design and study of solar energy conservation devices. Other uses of such information include agricultural studies, meteorological forecasting, environment, and energy conversion.
Arif Hepbasli, Koray Ülgen
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Approach to advanced clearness index modelling
2014 IEEE International Energy Conference (ENERGYCON), 2014Modeling of photo-voltaic (PV) system electrical energy production is necessary in order to determine the most efficient parameters (slope, azimuth, etc.) at the location of planed PV system. The most common methods in PV plant modelling use multi-year average input values of irradiation and temperature for a selected location.
Petrović, Igor, Vražić, Mario
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Clear cell hidradenoma of the index finger
European Journal of Plastic Surgery, 1997A patient with a benign clear-cell hidradenoma of the index finger is presented. Clear cell hidradenoma is a rare tumor originating from the eccrine sweat glands and infrequently appears on the hand.
Ozcan, M, Akin, S, Cihantimur, B
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The erythemal clearness index for Valencia, Spain
International Journal of Climatology, 2008AbstractThe values of three clearness indices have been measured for the city of Valencia: kt, the clearness index for the whole solar spectrum, ktUV the clearness index for the ultraviolet range, and the erythemal clearness index for the erythemal radiation ktUVER, corresponding to the solar radiation weighted by the erythemal action spectrum on human
F. Tena +5 more
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