2.1. Modified angstrom-type regression equation [7]

Chandraprabu Venkatachalam; Samuel G/mariam; Gedlu Solomon

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2.1. Modified angstrom-type regression equation [7]

CV Chandraprabu Venkatachalam

SG Samuel G/mariam

GS Gedlu Solomon

This method is extracted from research article: Data Brief, Mar 2019

Dataset of solar energy potential assessment for Adama city (Ethiopia)

DOI: 10.1016/j.dib.2019.103879

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$H_{O}$ = Monthly average radiation at extra-terrestrial region for the same location

Solar constant $I_{s c}$ = 1367 $\frac{W}{m^{2}}$

a and b are empirical constant [8].

From above equations, monthly Average daily global radiations on horizontal surface are listed on Table 3.

From above equation and Table 3, monthly Average daily diffuse radiations on horizontal surface are listed on Table 4.

Beam radiation $(H_{b})$ radiation directly come to the object without scattered obtained by subtract diffuse radiation from global radiation as follows. Monthly Average daily beam radiation on horizontal surface are listed on Table 5. Fig. 2 shows beam, diffuse and global solar radiation on horizontal surface.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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