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Enhancement of the greenhouse air ventilation rate under climate conditions of central Mexico Agrociencia
Romero-Gómez,Pedro; Choi,Christopher Y.; Lopez-Cruz,Irineo L..
Mexican plastic-covered greenhouses use natural ventilation as the main method to control temperature and humidity. However, no studies on the dynamic behavior of airflow and ventilation rates are available. In the present study, air exchange rates were analyzed in a naturally-ventilated greenhouse in Mexico using Computational Fluid Dynamics (CFD). To enhance greenhouse cooling, roof vent areas and screen characteristics were examined undef various scenarios to quantify ventilation rates. The air exchange rates through the tight insect screen (model S) were about 50 % of those achieved with actual and loose insect screen (model SF) at the same outside wind speed. Enlargement of the roof vent size ftom 6 % (current) to 15 % of the greenhouse-floor area...
Tipo: Info:eu-repo/semantics/article Palavras-chave: CFD; Greenhouse; Natural ventilation; Rates.
Ano: 2010 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952010000100001
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