How are evaporative coolers different from air conditioners?
Air conditioners use a compressor to cool the air. Air conditioning can bring down the temperature based on the thermostat, shutting off and on automatically, opposed to manual or remote control like evaporative cooling. Air conditioners also displace hot air outdoors and cool the inside air with the refrigerant contained in the system. However, air conditioners require venting kits to aid in hot air removal while also dehumidifying the air.
If you are in a dryer climate, where the relative humidity is low, a evaporative cooler may be a better choice for your cooling needs. Not only is it a much more cost effective means of cooling your building, but it will humidify the air in your space as well.
How does evaporative coolers work?
Evaporative cooling adds moisture to the air to reduce air temperature and increase relative humidity. It occurs when the air has a relative humidity of less than 100%. The lower the relative humidity in the air, the greater the cooling effect when moisture is added. The technology is versatile and saves energy.
In favorable climates (most of the western United States and several other worldwide areas), evaporative cooling can meet most or all building cooling needs using one-fourth of the energy of usual conventional equipment. Evaporative coolers also can be integrated with conventional chiller systems to save on cost. Finally, using evaporative technology can also improve a facility's load profile.
How to Size an Evaporative Cooler?
For those living in hot, dry areas, a evaporative cooler can provide effective and energy-efficient cooling. These devices lower temperatures by combining the natural of evaporation with a simple air-moving system. Generally speaking, warm air is pulled through moist pads where it is cooled by evaporation and circulated throughout the air. As this occurs, temperatures can be lowered by as much as 20 degrees Fahrenheit.
When choosing an evaporative cooler, a few crucial considerations should be kept in mind, particularly environmental conditions. Because evaporative coolers rely on the process of evaporation to cool the air, they will only be effective in hot, arid climates. Moreover, unlike air conditioners which require a closed environment, evaporative coolers require some sort of fresh air (such as an open door or window) in order to function efficiently.
What is the diffirence between evaporative cooling and misting systems?
Misting units spray a shower of water into the air that will collect on people, objects, equipment, floors, etc. The PORT-A-COOL® unit uses the process of evaporative to produce cooler air, but does not discharge a mist.