Measuring Solar Radiation on a Tilted Surface

2017 ◽  
pp. 199-208
Keyword(s):  
Solar Radiation ◽  
Tilted Surface

ESTIMATION OF ANNUAL SOLAR RADIATION ON A TILTED SURFACE AS A FUNCTION OF THE SLOPE ANGLE

2015 ◽  
Author(s):  
Gisele Mol da Silva ◽  
Cristiana Brasil Maia ◽  
Antônia Sônia Alves Cardoso Diniz
Keyword(s):  
Solar Radiation ◽  
Slope Angle ◽  
Tilted Surface

Evaluation of Different Radiation and Albedo Models for the Prediction of Solar Radiation Incident on Tilted Surfaces, for Four European Locations

1996 ◽  
Vol 118 (3) ◽  
pp. 183-189 ◽  
Author(s):  
B. E. Psiloglou ◽  
C. A. Balaras ◽  
M. Santamouris ◽  
D. N. Asimakopoulos
Keyword(s):  
Solar Radiation ◽  
Diffuse Radiation ◽  
Vertical Surface ◽  
Mean Bias Error ◽  
Bias Error ◽  
Total Solar Radiation ◽  
Total Radiation ◽  
Radiation Incident ◽  
Tilted Surface ◽  
Significant Difference

The diffuse radiation incident on an inclined surface is composed of both the sky diffuse radiation and the ground-reflected radiation. Depending on the model used to calculate the sky diffuse radiation and the estimated albedo value, it is possible to introduce a significant error in the prediction of the total radiation incident on a tilted surface. Twelve sky diffuse submodels associated with four different albedo submodels are used to estimate the total radiation on the tilted surface from data on the horizontal plane. The predicted total solar radiation values are compared with measured data on a south facing vertical surface, from four representative south and north European locations. Root mean square error, mean bias error, and a t-test are used to determine the intrinsic performance of each combination of diffuse tilt and albedo submodel. Accordingly, the various model combinations do not exhibit a statistically significant difference between measured and calculated values.

Developing and Evaluation of Various Correlations for Diffuse Solar Radiation for Urla (Izmir, Turkey)

2012 ◽  
Vol 135 (2) ◽  
Author(s):  
Orhan Ekren
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Tracking System ◽  
Diffuse Radiation ◽  
Energy System ◽  
Solar Irradiation ◽  
Total Solar Radiation ◽  
Total Radiation ◽  
Diffuse Solar Radiation ◽  
Tilted Surface

Characteristics of site-specific solar irradiation is required to optimize a solar energy system. If no tracking system is used, the amount of electricity or heat produced by solar energy depends on the total solar radiation on a tilted surface. Although pyranometer measures direct plus diffuse solar radiation on a horizontal surface, there are many locations where diffuse radiation is not measured. Also, diffuse radiation is necessary to determine the total radiation on a tilted surface. Therefore, in this study, new correlations for diffuse solar radiation is proposed as a function of atmospheric parameters for Urla (Izmir, Turkey). After applying the statistical procedure on the measured data, seven new correlations are proposed for the ratio of hourly average diffuse and total radiation. Also, the ratio of monthly average daily diffuse and total radiation for this region is proposed.

The estimation of daily, clear sky, solar radiation intercepted by a tilted surface

Solar Energy ◽  
1980 ◽  
Vol 24 (3) ◽  
pp. 287-294 ◽  
Author(s):  
Thomas A. Weiss ◽  
George O.G. Löf
Keyword(s):  
Solar Radiation ◽  
Clear Sky ◽  
Tilted Surface

scholarly journals Estimation of Solar Radiation on Horizontal and Tilted Surface over Bangladesh

2016 ◽  
Vol 05 (02) ◽  
pp. 54-69 ◽  
Author(s):  
Mohammad Ashraful Islam ◽  
Md. Saiful Alam ◽  
Komol Kanta Sharker ◽  
Sanjoy Kumar Nandi
Keyword(s):  
Solar Radiation ◽  
Tilted Surface

Modelling and Predicting of the Characteristics of a Photovoltaic Generator on a Horizontal and Tilted Surface

2016 ◽  
Vol 6 (6) ◽  
pp. 2557
Author(s):  
Mustapha Elyaqouti ◽  
Lahoussine Bouhouch ◽  
Ahmed Ihlal
Keyword(s):  
Experimental Data ◽  
Solar Radiation ◽  
Mathematical Models ◽  
Electric Power ◽  
Global Radiation ◽  
Meteorological Station ◽  
Output Characteristic ◽  
Electrical Parameters ◽  
Incident Solar Radiation ◽  
Tilted Surface

<p>In the present paper, we will attempt to predict the <em>I<sub>pv</sub>-V<sub>pv</sub></em> output characteristic of a photovoltaic generator (<em>PVG</em>) and consequently the generated electric power. This will be possible through modeling, extracting the electrical parameters of the <em>PVG</em> under study and also, by estimating the global incident solar radiation, on a surface, first horizontally, and then tilted to a given angle. Mathematical models developed in Matlab, to characterize the studied PVG are validated by experimental data of the PVG manufacture. While models associated with global radiation are validated by measurements taken by the meteorological station installed on the laboratory site <em>ERTAIER</em> (Team for Research in Technology and Advanced Engineering of Renewable Energies) of Higher School of Technology Agadir (ESTA).</p><p> </p>

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