L’AMELIORATION DU BILAN THERMIQUE DES SERRES PAR L’UTILISATION D’UN SYSTEME DE CHAUFFAGE SOLAIRE PASSIF

An experimentation with passive solar heating using EVA sleeves of 32 cm of diameter was conducted on the Chebika Station in the Kairouan region (OMIVAK).

Four greenhouses were heated with 4, 6, 8 and 10 passive sleeves under furrow irrigation regime and compared to a control.
The bioclimatic results shows good influence on minimum air and soil temperature, an increase of 1.2°C of minimum soil temperature and 1.3°C of minimum air temperature is obtained in function of the number of sleeves and the tightness of the greenhouse.

The obtained agronomic results shows an important increase of earliness and a low increase of total yield, allowing a pay back of the sleeves in less than two crops.

International Symposium on Simple Ventilation and Heating Methods for Greenhouses in Mild Winter Climates

H. Knani

https://doi.org/10.17660/ActaHortic.1990.263.9