Open AccessDetermination of the proportion of natural light in solar radiation using the method of conversion of lighting units into energy
Author(s) -
A. I. Sterhov,
I. Yu Loshkarev
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1353/1/012002
Subject(s) - radiation , radiant intensity , optics , spectral power distribution , wavelength , physics , infrared , ultraviolet , spectral energy distribution , visibility , irradiance , radiant energy , visible spectrum , normalization (sociology) , luminance , spectral line , astronomy , sociology , anthropology
In the article the method for the determination of the fraction of visible light in solar radiation was proposed. The solar spectrum was divided into three regions: ultraviolet, visible and infrared radiation. The spectral distribution of the intensity of solar radiation under various conditions was considered. With the help of the Mathcad software package, the spectral luminosity of a black body was calculated. Further, the proportion of natural light in solar radiation was estimated. The proposed method of converting lumens to watts consisted of 5 stages: normalization of the spectral luminosity curve of BB in the visible range by one; determination of the energy fraction of each wavelength introduced into the radiation intensity; obtaining the dependence of the illumination distribution on the radiation wavelength in lumens on the basis of the eye visibility curve; multiplying the values of the normalized spectral luminance curve with the values of the eye visibility curve in lumens; summation (integration) of the obtained values. This calculation showed that 1 W/m 2 of natural light is 213 lm/m 2 , which was confirmed by 100,000 lux (lm/m 2 ) with solar radiation of 1000 W/m 2 .