Solar Concentrator Modules for Residential Power Supply
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R ENERGY CONCENTRATORS
Solar Concentrator Modules for Residential Power Supply D. S. Strebkova, N. S. Filippchenkovab, *, and I. P. Gadjievc aFederal
Scientific Agroengineering Center VIM, Moscow, 109428 Russia JSC United Energy Company, Moscow, 115035 Russia c State University of Management, Moscow, 109542 Russia *e-mail: [email protected] b
Received February 3, 2020; revised March 16, 2020; accepted April 1, 2020
Abstract—Currently, in many areas with a centralized energy supply, there is much concern about energy performance of buildings, and therefore, there is a growing interest in the use of integrated solar concentrator modules (SCMs), which reduce the need for centralized electricity and heat supply. Of greater interest are nontracking SCMs, since their relatively large angular aperture allows operation without solar tracking. The objective of this study is to improve SCM efficiency and reduce the cost of electricity and heat generation. The SCM mathematical model is implemented in the OptiCad software. SCMs have been developed with low cosine losses, long service life, and low cost. The developed SCM design makes it possible to reduce cosine losses in comparison with a solar module without a concentrator by 3–15 times and increase the duration of SCM operation in a stationary mode by 6–9 months per year. The cost of the concentrator and the receiver developed using SCMs is 50% of the module cost, respectively. The cost of the developed SCMs in comparison with flat ones from China will be decreased by 1.64 times. The developed SCMs can be used for residential power supply in a stationary design for roofs and facades and with tracking systems for ground installation. Keywords: distributed energy, solar energy concentrator, semi-cylindrical parabolic mirror reflector, deflecting optical system, parametric angle, refraction coefficient, effective aperture angle, cosine losses DOI: 10.3103/S0003701X2004012X
INTRODUCTION Currently, the potential for increasing the efficiency of energy supply to consumers can be realized through the development of distributed energy generation to existing centralized energy systems, in the formation of which renewable energy sources play an important role, in particular, smart solar buildings with solar concentrators [1–3]. One of the most important tasks of solar engineering is the creation of efficient and economical solar concentrators, as well as increasing their concentrating ability [4–7]. Analytical approaches to calculating the solar density distribution in the focal plane of parabolic-cylinder mirror-concentrating systems, as well as the method for determining the optical-energy characteristics of mirror concentrating systems, are considered in [8, 9]. In [10], a solution was proposed for the integration of solar concentrator modules (SCMs) into building facades. Since the integration of traditional concentrating modules into roofs and facades is significantly difficult and requires the creation of high-precision automated solar tracking systems [11–18]
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