Evaporative cooling, which is a complex phenomenon, depends on air temperature, humidity, and air flow. This phenomenon is complex in physics, but it can be explained easily by laymen.
A slight breeze can provide some relief on a dry afternoon of 80 degrees F. However, it will not offer much relief if it is humid. It all depends on the air’s ability to absorb the moisture your body produces through sweat. The air can absorb the water that your body produces and cool you down through evaporation on a dry day. The opposite is true for humid days. There isn’t enough air volume to evaporate all the water, so it stays on your skin, making you feel damp and clammy. Cool!
Although evaporative cooling is possible in almost any climate, it’s most effective in dry environments. The cool desert breeze would blow through your home through the windows and filter through the damp curtains to lower the temperature. The same principle was used in many inventions to force air through an evaporative cooling medium and into the living area. The laws of physics would still apply and it would be difficult to work in hot humid environments. The introduction of refrigerated cooling air created a thriving industry that could provide sufficient cooling no matter what the outside environment. This technology was not without its limitations. The refrigeration equipment costs more than an equivalent evaporative cooling system. A compressor and an air handler can cost more than the cost of an evaporative cooling unit.
Although there are many types of evaporative cooling systems, they are relatively easy to use. However, the basic systems are very similar. These components are required in all Evaporative cooling systems:
Media: A material that is saturated with water so that air can pass through it and cool down via evaporation.
Is The Way To Move Air: This is common via A fan or centrifugal blower that is powered by an electric motor. It forces air through the media to get into the living area.
Water Distribution To Media: Systems differ slightly from single-pass systems that use city water pressure to distribute water to the media. However, the most popular systems use a reservoir and a pump to circulate the water around the media.
Evaporative Cooling: How Does It Work?
Evaporative cool is a cooling process that uses water. You know that cool sensation you feel when you leave a swimming pool? This is natural evaporative cool at work. This is how we feel cool breezes that blow across lakes’ surfaces. When water evaporates, the temperature below of air particles in contact with liquid water decreases. This happens due to an exothermic reaction. This reaction turns liquid water into gas and lowers the temperature of surrounding air molecules.
This is how evaporative coolers work. It is a cooling fan. It uses three main components: water, a moist surface, and a motor. The pump moves air particles through the water to reduce their temperature. The cooler machine houses a mechanical control system that operates the pump. The rotating fan distributes the cool air to the space.