SE—Structures and Environment

摘要: Abstract This study analyses the ventilation performance of a large Canarian-type greenhouse equipped with insect-proof nets on vent openings. Air exchange rate measurements were performed in region Agadir, Morocco, by means tracer gas method 5600 m 2 greenhouse, planted tomato crop and nets. A model was deduced simulations show that: (i) for given wind direction (parallel or perpendicular to opening), increases proportionally speed size opening; (ii) contribution chimney effect can be neglected when has value greater than ms −1 ; (iii) net induces strong additional pressure drop through opening, which significantly reduces generates an important air temperature increase. The simulation later used effects anti-thrip anti-aphid resulting climate. In both cases, induced reduction aeration evaluated, as well augmentation opening area needed maintain renewal unchanged. consequences use interior also studied.