Air Flow Cooling and Humidifying System and Cleaning Method for an Evaporation Panel of such a System

A system for humidifying and cooling an air flow, said system comprising:

• a frame delimiting an inlet, an outlet and a passage between the inlet and the outlet, the air flow being intended to pass through the passage,
• a plurality of porous evaporation panels mounted on the frame and arranged in the passage, each porous evaporation panel extending mainly in a substantially vertical direction,
• a plurality of water dispersing elements, each dispersing element being positioned over a corresponding porous evaporation panel, each of the dispersing elements being suitable for dispersing a volume of water over the corresponding porous evaporation panel so as to soak at least one portion of said porous evaporation panel with a volume of water, the soaked portion comprising at least one exchange surface area intended to be in contact with the air flow and to allow the volume of water to evaporate, a total exchange surface area being formed by the sum of the exchange surface areas of each of the evaporation panels,
• a supply system comprising a control unit configured to supply water to the dispersing elements with corresponding supply flow-rates,
• wherein the control unit comprises a plurality of control elements configured to control each of the supply flow-rates, correspondingly, where the control elements being controllable independently of each other between at least one evaporation configuration wherein the water supply flow-rate is substantially equal to a flow-rate of the water evaporated through the associated porous evaporation panel, and a cleaning configuration wherein the water supply flow-rate is greater than the flow-rate of the water evaporated through the associated completely soaked porous evaporation panel so that a water flow is created outside said associated porous evaporation panel.