Study of Selective Surface of Solar Heat Receiver

Abstract

For increasing of solar heating energy plants’ absorbing possibility and reducing heat loss selective nano-covered surface application has great practical importance. In the investigation Cu+Ni+SiO<SUB>2</SUB>+Ni+SiO<SUB>2</SUB> and Cu+Ni+ZnS content selective nano-covered surface’ usage in solar energy plants was studied. This content having high effectiveness was painted on the surface of the specific solar receiver. In comparison with the other selective surfaces this selective nano-covered surface supplies to keep its optical properties stable till T>500℃ temperature. New type solar receiver with the developed selective nano-covered surface was tested in natural condition and at the lab. In the paper the most necessary heat-energy parameters of this solar receiver were defined.