ISHS Acta Horticulturae 719: International Symposium on Greenhouse Cooling
AIR MOVEMENT AND CLIMATE UNIFORMITY IN VENTILATED GREENHOUSES |
| Author: | S. Sase |
| Keywords: | airflow pattern, CFD, natural ventilation, vent configuration, wind effect |
| DOI: | 10.17660/ActaHortic.2006.719.35 |
| Abstract:
Air movement caused by ventilation in greenhouses is an important factor that affects the uniformity of greenhouse environment and consequently the uniformity of plant growth and quality. Natural ventilation systems have been widely adopted. The studies of the air movement in naturally-ventilated greenhouses have been performed by means of field experiments, laboratory tests such as wind tunnel tests using scale models, and numerical simulations using computational fluid dynamics (CFD) approach. The primary characteristics of the air movement caused by wind and stack effects in a single-span greenhouse are described. Recent studies on the air movement and the uniformity of environment under natural ventilation are reviewed and discussed with respect to the multi-span greenhouses, the effect of plants, the vent configuration, and the effect of wind direction. | |
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