Αναζήτηση
Αποτελέσματα 1-5 από 5
Natural ventilation performance of six greenhouse and tunnel types
(1997)
The physical basis of natural ventilation is reviewed and the ventilation performance examined of six different greenhouse and tunnel types equipped with either roof or side, or both roof and side vents. Altogether, sixteen ...
Pressure field and airflow at the opening of a naturally ventilated greenhouse
(1998)
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 ...
Influence of covering material and shading on the spectral distribution of light in greenhouses
(1999)
The solar photon flux distribution was measured in the range from 400 to 1100 nm under a twin-span glasshouse and under the same glasshouse with blanked roof, external shading net and internal aluminized shade-screen. ...
Natural ventilation of a greenhouse with ridge and side openings: Sensitivity to temperature and wind effects
(1997)
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
(1996)
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 ...