CLOSED GREENHOUSES FOR SEMI-ARID CLIMATES: CRITICAL DISCUSSION FOLLOWING THE RESULTS OF THE WATERGY PROTOTYPE

G. Zaragoza, M. Buchholz
The Watergy first prototype of a closed greenhouse minimizes the use of water and energy. It has been operating since autumn 2004 in the semi-arid region of El Ejido in Almería, Spain. A balance with the main conclusions from the evaluation of the prototype is presented. A healthy crop has been maintained inside the greenhouse during all seasons, improving the production with respect to traditional open greenhouses and achieving a drastic reduction of the water consumption (about 80%). One of the main challenges has been to keep the temperature below 35°C with its passive cooling system. Several strategies have been followed and the results are outlined. Another sensitive point has been the short durability of the anti-fog property of the plastic cover material. The implications of both aspects in further designs are discussed.
Zaragoza, G. and Buchholz, M. (2008). CLOSED GREENHOUSES FOR SEMI-ARID CLIMATES: CRITICAL DISCUSSION FOLLOWING THE RESULTS OF THE WATERGY PROTOTYPE . Acta Hortic. 797, 37-42
DOI: 10.17660/ActaHortic.2008.797.2
https://doi.org/10.17660/ActaHortic.2008.797.2
closed greenhouse, water conservation, CO2 enrichment, anti-fog cover
English

Acta Horticulturae