Abstract
The ventilation performance of a Velo-typed greenhouse at high temperature atmosphere condition is investigated by means of computational simulations using a commercial software. The solar radiation is simulated using the Discrete Ordinates model, and the conduction through the covering material of the greenhouse and soil are calculated. The numerical scheme is validated by comparing the experimental result for the Almeria greenhouse. The natural ventilation performance through windows of the Velo-typed greenhouse is evaluated at free-stream velocity 0 m/s and 2.5 m/s. It is shown that the natural ventilation caused by the temperature difference is more efficient through windows on the ceiling than those on the sides.
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