Now showing items 1-6 of 6
Pressure field and airflow at the opening of a naturally ventilated greenhouse
Direct estimation of airflow at the vent opening by means of differential pressure measurements were performed in a twin-span greenhouse equipped with a continuous vent at the gutter. Application of Bernoulli's equation ...
Air flow, temperature and humidity patterns in a greenhouse tunnel
Air distribution and climatic heterogeneity in greenhouses interfere with plants activity and influence largely crop activity and more particularly transpiration and photosynthesis. This is particularly true for the tunnel, ...
Air flow and associated sensible heat exchanges in a naturally ventilated greenhouse
In order to investigate the three-dimensional nature of the air flow within the greenhouse, a three-dimensional sonic anemometer was used for the direct measurement of air and heat exchange inside the greenhouse and through ...
Greenhouse ventilation rates through combined roof and side openings: An experimental study
A simple statistical relation between the ventilation rate of a greenhouse and its roof and side openings was proposed and tested on experimental data. This relation combines thermal buoyancy and wind effects as driving ...
Natural ventilation of a greenhouse with ridge and side openings: Sensitivity to temperature and wind effects
An air exchange rate model of a Mediterranean greenhouse with ridge and side openings combining temperature and wind effects as driving forces of the natural ventilation was developed and tested on experimental data. it ...
Wind induced air exchange rates in a greenhouse tunnel with continuous side openings
To study the influence of wind speed on ventilation rates, experimental trials were carried out in a plastic tunnel with continuous side ventilators. This type of greenhouse is the most representative of Mediterranean and ...