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In this article it were analyzing the hydrodynamic processes occurring in the working chamber of the solar air heater collector with a submersible air pipe absorber, developed in a new type designed to obtain thermal energy from solar energy, including the mode of movement of air, the formation of boundary layers of air flow in pipes, heating surface structures, methods for calculating basic physical. Also, the issues of air flow boundary layers formation, boundary layers discontinuity detection, and air movement formation that occur under laminar or turbulent flow conditions are revealed as a result of changes in air flow movement patterns. Based on the results obtained directly in the Reynolds number (Re) 1000–5000 range of these thermal and hydrodynamic processes, a mathematical and immersion model was developed. In the research work, the concave dimensions of the air pipe including the relationship between the length of the concave step t and the height of the concave h were determined in general, taking into account the formation of air flow movements and the break points of the boundary layers when choosing the most optimal indicators of t/h.
Applied Solar Energy – Springer Journals
Published: Dec 1, 2022
Keywords: Sunlight; convective heat exchange; mode; absorber; air flow; laminar; turbulent; heat capacity; pressure; boundary layer; whirlwind
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