Qatar University

Driss Zejli

Ahmed Ouammi

Hanane Dagdougui

Yasmine Achour

Oumaima Choukai

Sami Sayadi

Facades, roofs, and greenhouses that may capable of self-cooling are provided. For example, a façade for a greenhouse may include an internal glass wall and an external glass wall in a parallel plane to the internal glass wall and separated from the internal glass wall by a first distance. The distance may be configured to permit passage of a heat transfer liquid. The internal glass wall can include a first face, facing the external glass wall. The first face of the internal glass wall can include a reflective surface configured to reflect solar radiation into the heat transfer liquid when in operation.

Self-cooling greenhouse for hot climate

Systems, methods, apparatuses, and computer program products for a greenhouse indoor environment controller based on model predictive control (MPC), which can be integrated into existing greenhouse regulatory systems to optimally maintain critical climatic variables, including artificial lighting levels, CO, indoor temperature, and humidity levels within acceptable limits. The objectives of the MPC may be to maximize the rate of crop photosynthesis while optimizing the use of the available water and energy resources, taking into account the unpredictability and intermittent nature of renewable energies and external atmospheric conditions. Accordingly, certain embodiments may facilitate the management of greenhouses by anticipating control actions for a better quality of production. For that, mathematical formulations of the optimal control problem may be described, and the numerical results related to the application of the MPC to case studies are described integrating the effects of greenhouse structural considerations and the influence of climate data on its operation.

Centralized predictive controller for management and optimal operation of microgrid powered greenhouses

Certain embodiments may provide a method for controlling a desalination system. The method may include performing a desalination procedure with salt-water in a desalination compartment of the desalination system. The method may also include extracting brine and freshwater from the desalination procedure. The method may further include directing the brine to a brine treatment compartment of the desalination system, and the freshwater to a firewater container. In addition, the method may include performing a brine treatment procedure in the brine treatment compartment. Further, the method may include collecting concentrated brine from the brine treatment compartment.

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Kénitra, Morocco

Driss Zejli