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. This device lowers the temperature felt in a room without the constraints of a conventional air conditioner.
It runs on water, without refrigerant, and consumes much less energy than air conditioning or some mobile air conditioners. The internal fan draws in warm air and passes it over a moist pad, creating an evaporation effect that cools the ambient air. This principle is ideal for coping with summer heat, especially if you’re wondering how to cool a room efficiently without increasing your bills. Coolers are a practical alternative to traditional air conditioners.
Warm, dry air passing through a moist heat exchanger cools down. The energy required to evaporate the water is extracted from the air, resulting in natural cooling. This transformation is said to be Adiabatic (constant enthalpy): the water temperature remains unchanged, only the air temperature decreases. This operating principle is at the heart of many mobile cooling units, often equipped with a water tank and filter to improve air quality.
Unlike conventional heating, these systems use very little energy and also act as a humidifier, which is particularly useful in a home subject to severe drought. Some integrated fans optimize humidity diffusion, making these models both efficient and energy-efficient.