Countries located in the Mediterranean region share many common features terms of agricultural sustainability and economic realities modern farming, as they are affected by water scarcity, energy use climate suitability. Greenhouses considered a mitigation measure to combat change sustainable production system. The majority greenhouses rudimentary, while those Central North Europe characterized...

Using an unknown input observer, with an output linearising feedback, an online estimator for the ventilation flow or rate is developed for natural ventilated greenhouses. The paper shows how to design, implement and tune such an estimator in practice and shows that it performs well. Furthermore the practical value for the grower is discussed. Copyright © 2005 IFAC

An atmospheric boundary layer wind tunnel study was performed to determine the overall horizontal wind load on multi-span duo-pitch greenhouses. The results of this study are intended for the stability design of inflexible cladding system greenhouses (designated as Class A in EN 13031-1) with roof pitch angles of 23–24° and ridge heights of 7.5–8m. Both static force and fluctuating pressure mea...