11. The method according to claim 10, deflecting the waterflow and allowing the airflow comprises channelling the waterflow from the first evaporative cooler to the second evaporative cooler and allowing the airflow from the second evaporative cooler to the first evaporative cooler through the deflector. 12. The method according to claim 10 or 11, deflecting the waterflow and allowing the airflow comprises directing the waterflow from the first evaporative cooler to the second evaporative cooler on a first side of the deflector and allowing the airflow from the second evaporative cooler to the first evaporative cooler to flow from a second side of the deflector to the first side. 13. The method according to any one of claim 10 to 12, wherein deflecting the waterflow and allowing the airflow comprises allowing the airflow through a plurality of openings of a base layer, allowing the airflow through the plurality of openings to flow between a plurality of overhangs spaced apart from each other and overhanging the plurality of openings, preventing the waterflow into the plurality of openings and directing the waterflow into the second evaporative cooler. 14. The method according to any one of claims 10 to 13, wherein deflecting the waterflow and allowing the airflow comprises allowing the airflow through a plurality of openings of a base layer for receiving and channelling the waterflow to the second evaporative cooler, receiving and channelling the waterflow to the base layer via a top layer comprising a plurality of overhangs spaced apart from each other and overhanging the plurality of openings. 15. The method according to any one of claims 10 to 14, further comprising guiding the airflow from the second evaporative cooler to the first evaporative cooler. 16. The method according to any one of claims 10 to 15, further comprising guiding the airflow from the second evaporative cooler to the deflector evaporative cooler.