Estimation of Global Solar Radiation for Four Selected Sites in Nepal Using Sunshine Hours, Temperature and Relative Humidity
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References
3,218 citations
"Estimation of Global Solar Radiatio..." refers background or methods in this paper
...The sum of direct and diffuse radiation on the earth surface is known as global/total radiation which is very important for the design of certain solar energy applications [10]....
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...…regression constants, the ratio m O H H is clearness parameter or cloudiness index, d n N fraction of sunshine hours, and OH is the monthly average daily extraterrestrial radia- tion on the horizontal surface given by Iqbal (1983) as follows: sin si24 π π 18 n cos co si 0 s nO o ssc sH I E...
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...…of the estimated values was tested by using the statistical techniques for the Angstrom-Prescott model and for the new proposed model based on the definition devised by Iqbal (1983) which is as below: 1 22n 1 e mRMSE H H n (13) 1n e mMBE H H n (14) 1 100 n m e m H HMPE n H (15)...
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...The depletion of the direct beam by the cloud depends on the type of clouds, their thickness and the number of layers [10]....
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388 citations
"Estimation of Global Solar Radiatio..." refers background in this paper
...Empirical models which have been used to calculate solar radiation are usually based on astronomical factors, geographical factors, geometric factors, physical factors and meteorological factors [14]....
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...The database of the solar radiation at any locations is very useful for that particular locality as well as for the broader world community [14] for a sustainable future energy....
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81 citations
"Estimation of Global Solar Radiatio..." refers background in this paper
...So far, various models have been developed by a number of researchers with different regression coefficients using linear regression techniques [13] for various countries and for different locations to estimate solar radiation....
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71 citations
"Estimation of Global Solar Radiatio..." refers background in this paper
...It is an equation of least square line [15] or first order regression [16] where, KT (= Hm/Ho) is a dependent variable called clearness index, a, b, c, d are regression constants, and...
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47 citations
"Estimation of Global Solar Radiatio..." refers methods in this paper
...The resultant correlation may then be used for locations of similar meteorological characteristics [12]....
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