Abstract
The effect of the total solar eclipse on the performance of the solar concentrator is studied on the Big Solar Furnace (BSF) in the Institute of Material Science Scientific -Production Association Physics-Sun, Academy of Sciences of Uzbekistan at Parkent of Uzbekistan during the partial solar eclipse of August 1, 2008. It is found that the solar radiation decreased dramatically in the first half an hour from 500 W/m2 at 15:00 to a few Watts per squared meters at 15:35, while it began to increase gradually until reaching about 370 W/m2 at 17:08. The distribution of the heat in the focus of the BSF is tested by measuring the heating power of radiation concentrated by the furnace during that eclipse. Heat energy distribution contours are obtained in the mode of tracking the trajectory of the sun during the eclipse. The divergence of the focus during the eclipse of the BSF doesn't exist and the structure of the spot has no significant change.
Highlights
A solar furnace is a structure that uses concentrated solar power to produce high temperatures, usually for industry
From the Figs. (10), (11), (12) and (13), we can notice that there is no significant divergence in the focus pattern of the Big Solar Furnace (BSF) during the solar eclipse, when it is set in the mode of tracking the sun apparent trajectory
The results of this research showed the following: 1. The peak of the focus profile of the BSF started from 70% of the scale arbitrary unit and got increased during the solar eclipse until reaching 90% of this scale
Summary
A solar furnace is a structure that uses concentrated solar power to produce high temperatures, usually for industry. The second biggest solar furnace in the world BSF with capacity of 1 MW is located in Parkent city in Uzbekistan (φ = 41° 18' 45.93" N and λ = 69° 44' 28.03" E) which is on elevation of 1050 m over the sea level. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometers wide. A partial eclipse could be seen from the much broader path of the Moon's penumbra, including northeastern North America and most of Europe and Asia. It was described by observers as "special for its colors around the horizon". The recorded solar radiation has dramatically decreased during the first 35 minutes until it was about to vanish, while it needed the rest two hours of the eclipse to return back gradually to its normal values as displayed in Fig. (7)
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