Evaporative cooling: operating principle
This
air freshener
uses the evaporative cooling system. It’s a simple, natural method that has been used for decades in hot, dry countries, because it’s also very economical.
We reproduce the evaporation phenomenon that can be observed near a water source.
Warm, dry air passing through a moist heat exchanger cools down. The energy required to evaporate the water is extracted from the air, which then cools down. This transformation is said to be Adiabatic (constant enthalpy): the water temperature remains unchanged, only the air temperature decreases.