Experimental Studies on Receiving Surfaces of Flat Solar Collectors

• Published in: Surface engineering and applied electrochemistry 2021-11, Vol.57 (6), p.715-720
• Main Authors: Kuvshinov, V. V., Abd Ali, L. M., Morozova, N. V., Krit, B. L., Al-Rufaee, F. M., Issa, H. A.
• Format: Article
• Language: English
• Subjects: Absorbers; Direct conversion; Energy; Engineering; Hot water heating; Machines; Manufacturing; Nuclear energy; Nuclear reactors; Power plants; Processes; Radiation; Renewable energy sources; Solar collectors; Solar radiation; Stainless steels; Thermal energy; Water supply
• ISSN: 1068-3755; 1934-8002
• DOI: 10.3103/S1068375521060089

This work is devoted to studying the energy characteristics of a solar collector with a selective receiving surface. The use of special technologies of plating high-quality selective coatings on the heliocollector absorber makes it possible to substantially increase the coefficient of conversion of the solar radiation incidence flux. The research data are presented on the flat heliocollectors, which serve to heat-up a heat carrier used mainly for the needs of the hot-water supply for the individual consumers. In the performed experiments, the flat solar collectors were equipped with copper and stainless-steel absorbers. The studies showed that the heliocollectors can ensure better use depending on the operation mode of the entire system of the solar hot-water supply. The experiments were carried out by the staff of the Renewable Energy Sources and the Electric Energy and Networks department of Sevastopol State University at the Institute of Nuclear Energy and Industry. It was shown that the conversion coefficient of the solar power plants for the direct conversion of the radiation flux into thermal energy is far more energy efficient compared to that of the solar electric generation systems.