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Study of the Performance Characteristics of a Solar Concentrator for Production of Thermal Energy

Applied Solar Energy volume 59, pages 169–175 (2023)Cite this article

Abstract

This paper presents studies of the optical-energy characteristics of a parabolic solar collector for production of thermal energy for heating a building. The results of calculations, three-dimensional and topological distribution of energy in the focal zone of a solar concentrator with a diameter of 6.36 m installed at the Institute of Materials Science, Academy of Sciences of the Republic of Uzbekistan are presented. A mathematical model of the thermal regime of a solar concentrator is proposed, calculations are carried out to determine the operating temperature and the efficiency of the receiver. For efficient conversion of concentrated solar radiation, a receiver was developed from a solid copper pipe with a diameter of 12 mm in the form of a single cylindrical spiral. The outlet diameter of such a receiver was D = 200 mm. To reduce the loss from the outside, the receiver is covered with asbestos material and cement with a thickness of 20 mm. The degree of geometric concentration of the solar concentrator is 2126; the power is 18.03 kW at 800 W/m2 of solar radiation. Calculations show that the average daily thermal efficiency of the concentrator across the seasons of the year remains high (over 25%), and the system can also be operated for heating buildings.

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ACKNOWLEDGMENTS

The author expresses his gratitude to the scientists of the Institute of Materials Science, Academy of Sciences of the Republic of Uzbekistan, as well as the Physical-Technical Institute, Academy of Sciences of the Republic of Uzbekistan, for their help in discussing the results of scientific research.

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Authors and Affiliations

  1. National Scientific Research Institute of Renewable Energy Sources, Ministry of Energy of the Republic of Uzbekistan, 100084, Tashkent, Uzbekistan

    J. Z. Akhadov

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  1. J. Z. Akhadov
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Translated by M. Chubarova

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Akhadov, J.Z. Study of the Performance Characteristics of a Solar Concentrator for Production of Thermal Energy. Appl. Sol. Energy 59, 169–175 (2023). https://doi.org/10.3103/S0003701X23600765

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  • DOI: https://doi.org/10.3103/S0003701X23600765

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