Exergy of direct solar radiation
International Journal of Development Research
Exergy of direct solar radiation
Received 18th January, 2018; Received in revised form 26th February, 2018; Accepted 04th March, 2018; Published online 30th April, 2018
Copyright © 2018, Konstantin Ludanov. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The article provides an exergy analysis of the concentration of solar radiation. For the first time, the flux of solar radiation is characterized by its own temperature (radiation), and its exergy is determined within the framework of the canonical Carnot cycle. Based on a new treatment of the temperature of the radiant heat flux, an analytical expression is obtained for the radiation temperature of the solar radiation flux, both for direct solar radiation and for diffuse radiation. The dependence of the density of direct solar radiation on the "mass of the atmosphere" is found. These formulas allow us to calculate the radiation temperature of the solar radiation flux and the exergy flux density on the Earth's surface and in the focus of the concentrator's mirror.
