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אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Natural ventilation of greenhouses: Experiments and model
Year:
1999
Authors :
טייטל, מאיר
;
.
טנאי, יוסף
;
.
Volume :
96
Co-Authors:
Teitel, M., Agricultural Engineering Institute, Agric. Res. Org., Volcani Ctr., P.O., Bet Dagan, Israel
Tanny, J., Ctr. for Technol. Education Holon, P.O. Box 305, 58102, Holon, Israel
Facilitators :
From page:
59
To page:
70
(
Total pages:
12
)
Abstract:
A theoretical and experimental study was conducted to investigate the transient response of the greenhouse air temperature and humidity, to the opening of roof windows. A theoretical model, based on non-dimensional mass and energy conservation equations was developed and similarity solutions were obtained. The model was calibrated against the results of experiments conducted in a full-scale greenhouse and the model parameters were identified. The study shows that opening the roof windows results in a decrease with time of the air temperature and humidity ratio and an approach to a steady-state. The effect of various physical parameters such as height of window opening, wind speed and solar radiation on the ventilation process, was studied by the model. The results show that the effect of the ventilation (i.e. the reduction in the temperature and humidity ratio within the greenhouse) increases with the height of the window opening and the wind speed and decreases with the solar radiation.
Note:
Related Files :
Experiments
Greenhouse climate
humidity
Model
temperature
Ventilation
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/S0168-1923(99)00041-6
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
31929
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:06
Scientific Publication
Natural ventilation of greenhouses: Experiments and model
96
Teitel, M., Agricultural Engineering Institute, Agric. Res. Org., Volcani Ctr., P.O., Bet Dagan, Israel
Tanny, J., Ctr. for Technol. Education Holon, P.O. Box 305, 58102, Holon, Israel
Natural ventilation of greenhouses: Experiments and model
A theoretical and experimental study was conducted to investigate the transient response of the greenhouse air temperature and humidity, to the opening of roof windows. A theoretical model, based on non-dimensional mass and energy conservation equations was developed and similarity solutions were obtained. The model was calibrated against the results of experiments conducted in a full-scale greenhouse and the model parameters were identified. The study shows that opening the roof windows results in a decrease with time of the air temperature and humidity ratio and an approach to a steady-state. The effect of various physical parameters such as height of window opening, wind speed and solar radiation on the ventilation process, was studied by the model. The results show that the effect of the ventilation (i.e. the reduction in the temperature and humidity ratio within the greenhouse) increases with the height of the window opening and the wind speed and decreases with the solar radiation.
Scientific Publication
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