Heat exchange in a solar air heater under mixed convection conditions

The article conducted an experimental study of heat exchange during mixed convection in a flat solar air heater under the conditions of Fergana. The studies were carried out in June 2025 on an air manifold having dimensions: the length of the collector was 1.5 m, the width of the channel was 0.5 m, the height of the channel was 0.07 m. The air speed in the collector was 0.28 m/s. Studies have shown stable operation of the collector with a high degree of air heating, and heat transfer coefficients during the daytime have also been calculated by calculation.

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