What Is Evaporative Cooling?

Evaporative cooling is sometimes referred to as adiabatic cooling or water evaporation. It cools the air to a comfortable temperature using the principle of water vaporization.

It Uses Water to Cool and Ventilate

Water is transformed from a liquid into a gas during the evaporative cooling process. This process requires energy which is extracted from the atmosphere in the form of heat. The air is then cooled.

The evaporative cooling process is possible in many ways.

  • Direct adiabatic cool
  • Direct/indirect adiabatic heating
  • Indirect adiabatic cool

On our page on two-stage evaporative cooling, you may get a full review of the various approaches.

How Does An Evaporative Cooling System Work?

An evaporative cooler padsuses hot outside air to cool the cooling pads using a fan-driven motor. A water pump continuously moistens the cooling pads and delivers water to them. The cooling down air is then blown into a building. The effectiveness of the evaporative medium can affect the cooling of the outgoing air. It can be chilled down to 60-90 % of the wet bulb. The outgoing air is then cooled to 10 to 15 degrees Celsius, but it still contains high levels of humidity. It is not suggested to use direct evaporative cooling to cool home and working areas.

What Is The Importance Of Evaporative Cooling?

An indirect/direct cooling system is an efficient and sustainable cooling method that creates a productive and comfortable environment for offices, distribution centers, and production facilities. Evaporative cooling in indirect/direct cooling systems uses 10% less energy than traditional mechanical cooling while producing more or less the same temperatures as mechanical cooling systems. Evaporative cooling is also different from mechanical cooling. It does not circulate warm, polluted indoor air. Instead, it ventilates 100% clean, fresh, and cool indoor air. The indoor air quality is significantly improved as a result.

Direct Evaporative Cooling

Direct evaporative cooling is also known as direct wet bulb cooling or direct adiabatic cool. It is because there is direct contact between water and the air stream. Direct evaporative cooling is when water evaporates directly into the stream of air that must be cooled. This form of evaporative cooling, particularly in dry areas, is the most popular.

The Advantages of Direct Evaporative Cooling

Direct evaporative cooling can be very efficient when used as precooling for industrial chillers. This type of evaporative cooling uses a contact humidifiers (wet-evaporative media) that cools the incoming air and then ventilates it through an air-cooled chilled chiller. This greatly increases the chiller’s efficiency and results in significant energy savings.

Evaporative Pre-Cooling For Chillers

Direct evaporative cooling is used in the Precool system to cool the outside air. This allows for increased efficiency and cooling of mechanical cooling systems.

The PreCool is designed around the chiller’s condensers and shades it completely. The PreCool creates an environment around the condenser. The PreCool is also controlled by energy-saving software that takes into account the local weather and water quality. It also adjusts to the thickening of water during cooling. The chiller is able to run as efficiently as possible while consuming as little energy as possible. The PreCool ensures that your chiller is operating at its best.