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Fuzzy Modelling of Diffuse Solar Radiation
2017Modelling the diffuse solar radiation is a topic in many scientific and research papers, but most of the presented models are conventional, approximate and constrained to a certain geographic region, lacking the universality. Furthermore, many of these mathematical models are polynomials of appropriate degree, and/or consist of a set of expressions ...
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2016
In this study, the meteorological parameters of weather station of University of Petroleum and Energy Studies (UPES), Dehradun, India, has been considered for solar radiation prediction models based on adaptive neuro fuzzy inference system (ANFIS) have been proposed considering different inputs on daily basis for the year 2015.
null Anand Mohan +2 more
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In this study, the meteorological parameters of weather station of University of Petroleum and Energy Studies (UPES), Dehradun, India, has been considered for solar radiation prediction models based on adaptive neuro fuzzy inference system (ANFIS) have been proposed considering different inputs on daily basis for the year 2015.
null Anand Mohan +2 more
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Diffuse solar ultraviolet radiation.
International ophthalmology clinics, 2005The solar UV exposure to the eyes of humans is due to the direct and diffuse components of solar radiation. The direct ocular UV exposures to the eyes are reduced due to the natural aversion of the majority of people from looking directly at the sun. The diffuse UV is incident from all directions and as a result, it is more difficult to minimise the ...
Parisi, Alfio, Turnbull, David J.
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A note on diffuse solar radiation on a tilted surface
Energy, 2009We are presenting a note on comparative study of diffuse component of solar radiation on tilted surface with different angle of inclination. The monthly mean daily diffuse radiation have been calculated on inclined surfaces from the data of horizontal surface using the Circumsolar and Isotropic model and the anisotropic model of Klucher and Hay at ...
Chanchal Kumar Pandey, A.K. Katiyar
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Estimation of horizontal diffuse solar radiation in Egypt
Energy Conversion and Management, 2003Abstract The measured values of monthly average daily global H and diffuse H d solar radiation on a horizontal surface, as well as the number of bright sunshine hours n , for four Egyptian locations are analyzed. The selected locations include Matruh, Al-Arish, Rafah and Aswan to represent the weather conditions of the north
A.A El-Sebaii, A.A Trabea
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Global and diffuse solar radiation in Doha (Qatar)
Solar & Wind Technology, 1985Abstract Measurement of global solar radiation on a horizontal surface, for 8 years in Doha, are used to examine some of the methods of prediction of global solar radiation. Relation (3) shows a good degree of accuracy, provided the parameter K is appropriately adjusted. Equation (4) shows, generally, larger values than the actual values.
Yousef A.G. Abdalla, M.K. Baghdady
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Diffuse solar radiation in Cairo, Egypt
Energy Conversion and Management, 1985Abstract In the present paper, the correlations of Page, Liu and Jordan, and Iqbal were employed to predict the monthly mean daily diffuse solar radiation in Cairo. However, it was found that the coefficients used in these correlations were not applicable in the case of Cairo. New coefficients were obtained and used in the above correlations in order
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Estimation of daily diffuse solar radiation in China
Renewable Energy, 2004Applying the measured global and diffuse solar radiation data from 78 meteorological stations in China, a countrywide general correlation model for calculating the daily diffuse radiation was derived on the basis of Liu and Jordan method. Two widely used statistics: root mean square error and mean bias error were used to assess the performance of the ...
Zhou Jin, Wu Yezheng, Yan Gang
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The measurement of diffuse solar radiation from an aircraft
Atmospheric Environment (1967), 1985Abstract A method of measuring the diffuse components of the flux of solar radiation from an aircraft is described in which a simple obscurer is used to shadow an upward facing radiometer from the direct beam. The fraction of diffuse flux obscured by the device is calculated from the estimated scattering properties of the atmosphere. The potential of
J.S. Foot, M. Kitchen, C.J. Readings
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Spectral distribution of solar radiation. II: Global and diffuse
Quarterly Journal of the Royal Meteorological Society, 1978AbstractMeasurements of the spectral distribution of global and diffuse solar radiation made in both wide and narrow wavebands are reported. Relationships between the ratio of diffuse to global irradiance, α, in both the visible and total solar wavebands, and atmospheric turbidity and zenith angle are developed.
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