CE CB JH168 air cooler with 8000 cmh / portable air cooler / evaporative air cooler

What's the principle of evaporative cooling? Evaporative cooling works on the principle of heat absorption by moisture evaporation. The process happens whenever dry air passes over water, some of the water will be absorbed by the air. This happens because the temperature and the vapor pressure of the water and the air attempt to equalize. Liquid water molecules become gas in the dry air, a process that uses energy to change its physical state. Heat moves from the higher temperature of the air to the lower temperature of the water, resulting in cooler air. The advantages of Evaporative air Cooler: (1) Energy efficient (2) Cleaner and healthier (3) Easier and less expensive to install (4) Environmentally friendly (5) Simple to maintain (6) Productivity enhancing