Results 21 to 30 of about 2,217 (261)
Atmosphere, 2021 Natural daylight is recognized as an important variable in the energy performance of buildings. A method that estimates the global illuminance received on a horizontal surface at ground level and its direct component at normal incidence under cloudless ...
William Wandji Nyamsi +5 more
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Energies, 2013 A new short-term probabilistic forecasting method is proposed to predict the probability density function of the hourly active power generated by a photovoltaic system. Firstly, the probability density function of the hourly clearness index is forecasted
Gabriella Ferruzzi +4 more
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Modeling of Daily Global Solar Irradiation in Timisoara by Using a Fuzzy Approach
Annals of West University of Timisoara: Physics, 2018 This paper proposes a new simple model to forecast daily global solar irradiation one day ahead using the Takagi-Sugeno fuzzy methods. The model is based on solar radiation data measured in Timisoara, Romania.
Boata Remus
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Energies, 2021 This paper presents a comparison study between the measured solar radiations on site and the calculated solar radiation based on the most theoretical models presented in the literature up to date.
Bouazza Fekkak +6 more
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KPV: A clear-sky index for photovoltaics
Solar Energy, 2014 Abstract The rapidly growing installed base of distributed solar photovoltaic (PV) systems is causing increased interest in forecasting their power output. A key step towards this is accurately estimating the output from a PV system based on the known output from a nearby PV system.
Engerer, Nicholas, Mills, Franklin
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A Semi-Analytical Model for Separating Diffuse and Direct Solar Radiation Components
Applied Sciences, 2022 The knowledge of the solar irradiation components is required by most solar applications. When only the global horizontal irradiance is measured, this one is typically broken down into its fundamental components, beam and diffuse, by applying an ...
Eugenia Paulescu, Marius Paulescu
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A Change of Yearly Atmospheric Clearness Index in Korea [PDF]
Journal of the Korean Solar Energy Society, 2011 Since the atmospheric clearness index is main factor for evaluating atmosphere environment, it is necessary to estimate its characteristics all over the major cities in Korea. We have begun collecting clearness index data since 1982 at 16 different cities and considerable effort has been made for constructing a standard value from measured data at each
Dok-Ki Jo +3 more
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Some Psychometric Properties of the Brazilian CDC Clear Communication Index
HLRP: Health Literacy Research and Practice, 2022 The Centers for Disease Control and Prevention (CDC) Clear Communication Index (CCI) was cross-culturally adapted to Brazilian Portuguese (BR). It was necessary to analyze the reliability and validity of the BR-CDC-CCI for its use in Brazil. This study aimed to evaluate the psychometric properties of the instrument in its Brazilian version.
Angélica Maria Cupertino Lopes Marinho +6 more
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Statistical analysis of the solar diffuse fraction radiation using regression analysis of longitudin
Journal of Thermal Engineering, 2023 In this study, the validity of the estimation of a single regression equation for the diffuse frac-tion across 22 stations in India using the two parameters: the clearness index and the sunshine ratio is tested.
Hicham SALHI +2 more
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Global Solar Radiation, Sunshine-hour Distribution, and Clearness Index: A Case Study of Sub-Sahara Region in Nigeria [PDF]
Renewable Energy Research and Applications, 2020 Global solar radiation is the sum total of all radiation reaching the earth surface i.e. it includes: the direct and the diffused solar radiation reaching the earth surface.
N.O. Adeniji, J.O. Adeniji, O. Ojeikere
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