The Overview of Basic Types and Characteristics of Solar Concentrating Modules With Louvered Heliostats

The Overview of Basic Types and Characteristics of Solar Concentrating Modules With Louvered Heliostats

DOI: 10.4018/978-1-7998-4276-7.ch001
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Abstract

The principles of construction and operation of the main concentrating systems, including non-followable modules, are reviewed, and the work of the concentrators is analyzed. An analytical review of modern facade-integrated photovoltaic technologies was carried out, and their classification was given. The known methods for calculating a flat (two-dimensional) scheme for passing the sun's rays through a louvered heliostat make it impossible to assess the real effectiveness of using louvered heliostats with non-tracking solar concentrators, which makes it necessary to consider the practically important three-dimensional problem of calculating the solar radiation flux on the receiving surface of an unfollowing parabolic-cylindrical solar concentrator with louver heliostat.
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Thermal Solar Modules

The main structural element of a thermal solar installation is a solar collector, in which solar energy is converted into heat and heat water, air or some other coolant. The basis of the flat collector is a light-absorbing surface, which must have reliable contact with a number of pipes or channels for the movement of the heated coolant. The combination of a flat radiation-absorbing surface and pipes forms a single structural element - the absorber. For better absorption of solar energy, the upper part of the absorber should have a special absorbing selective coating. Reducing heat loss from the absorber into the surrounding space is achieved through the use of thermal insulation, which covers the lower surface of the absorber, and translucent insulation placed above the absorber at a certain distance from it. All of these elements are placed in the housing, and sealing of the transparent insulation - glazing (Dufflie, Beckman, 1991) is performed. Among the principal advantages of a flat collector compared to other types of collectors is its ability to capture both direct and diffuse solar radiation. This allows you to install a collector stationary without the need for tracking the sun.

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