The cooling principle of evaporative air conditioners is based on the physical process of evaporation of water and the removal of heat. The following is the cooling principle of evaporative air conditioners: Evaporative air conditioners
1. Evaporation and endothermic of water: Evaporation is an endothermic process that absorbs the surrounding heat when water molecules change from liquid to gaseous. This is because the molecules, during the transition from the liquid state to the gaseous state, need to overcome the force of attraction between the molecules in the liquid state, which requires the absorption of heat.
2. Humidity control: There is usually a moist evaporation medium inside the evaporative air conditioner, such as filter paper or evaporation chip with high humidity. The water pump sends the water to this evaporation medium, keeping it moist.
3. Air passes through a moist evaporation medium: When hot air passes through a moist evaporation medium, the heat in the air is used to evaporate moisture. This causes the water molecules on the surface of the evaporation medium to change from a liquid to a gaseous state, absorbing heat and lowering the surrounding temperature.
4. Cooling effect: Due to the evaporative endothermic properties of water, the heat in the air is used for the evaporation of water, which makes the air temperature decrease. This cooling effect allows the evaporative air conditioner to cool down without the use of refrigerants.
Evaporative air conditioner reduces air temperature through water evaporation and heat absorption, which is a relatively environmentally friendly and energy-efficient air conditioning method, especially suitable for some places with large space ventilation and cooling.