Influence of the Height in a Colombian Multi-Tunnel Greenhouse on Natural Ventilation and Thermal Behavior: Modeling Approach

The dimensions of a passive greenhouse are one the decisions made by producers or builders based on characteristics available land and economic cost building structure per unit covered area. In few cases, design criteria reviewed established type crop local climate conditions. One that is generally exposed to greater manipulation height above gutter general structure, since with lower has cost. This led some countries in tropical region build greenhouses that, due their architectural characteristics, have inadequate microclimatic conditions for agricultural production. objective this study was analyze effect air flows thermal distribution generated increase over Colombian multi-tunnel using successfully two-dimensional computational fluid dynamics (CFD) model. simulated numerical results showed increasing allows obtaining temperature reductions from 0.1 11.7 °C depending ventilation configuration used external wind speed. Likewise, it identified combined side roof (RS) higher renovation indexes (RI) values between 144 449% respect (S) (R) configurations. Finally, were fitted within surface regression models responses.