Evaporative Cooler
Evaporative Cooler (also swamp cooler, desert cooler, & wet air cooler) is a tool that cools air through the simple evaporation of water. Evaporative cooler differs from air conditioning by refrigeration & absorptive refrigeration, which use vapor-compression or absorption refrigeration cycles. In the United States, the use of the term swamp cooler may be due to the odor of algae produced by early units. Air washers & wet cooling towers use the same principles as evaporative coolers, but are optimized for purposes other than air cooling.
Evaporative cooler is well suited for climates where the air is hot & humidity is low. For example, in the United States, the western/mountain states are lovely locations, with swamp coolers prevalent in cities like Denver, Salt Lake City, Albuquerque, El Paso, Tucson, & Fresno where sufficient water is available. Evaporative air conditioning is also popular & well suited to the southern (temperate) part of Australia. In dry, arid climates, the installation & operating cost of an evaporative cooler can be much lower than refrigerative air conditioning, often by 80% or so. However, evaporative cooler & vapor-compression air conditioning are sometimes used in combination to yield optimal cooling results. Some evaporative cooler may also serve as humidifiers in the heating season.
How Evaporative Cooler Works
An evaporative cooler is essentially a large fan with water-moistened pads in front of it. The fan draws warm outside air through the pads and blows the now-cooled air throughout the house.
Little distribution lines supply water to the top of the pads. Water soaks the pads and, thanks to gravity, trickles through them to collect in a sump at the bottom of the cooler. A little recirculating water pump sends the collected water back to the top of the pads.Since water is continually lost through evaporation, a float valve - much like the three that controls the water in a toilet tank - adds water to the sump when the level gets low. Under normal conditions, a swamp cooler can use between 3 to 15 gallons of water a day.
A large fan draws air through the pads, where evaporation drops the temperature approximately 20 degrees. The fan then blows this cooled air in to the house.Little units can be installed in a window, blowing cooled air directly in to a room. Larger units can blow air in to a central location, or the air can travel through ductwork to individual rooms.
Normal air conditioning is a closed method, taking air from inside a house and recycling it. For air conditioning to function properly, doors and windows should be closed. Evaporative cooler, however, takes air from outside the house. For evaporative cooler to work properly, the cooled outside air must be allowed to escape. By choosing which doors or windows in your home you leave open, you can to help direct the flow of cooled air to areas where it is needed.
Evaporative cooler is well suited for climates where the air is hot & humidity is low. For example, in the United States, the western/mountain states are lovely locations, with swamp coolers prevalent in cities like Denver, Salt Lake City, Albuquerque, El Paso, Tucson, & Fresno where sufficient water is available. Evaporative air conditioning is also popular & well suited to the southern (temperate) part of Australia. In dry, arid climates, the installation & operating cost of an evaporative cooler can be much lower than refrigerative air conditioning, often by 80% or so. However, evaporative cooler & vapor-compression air conditioning are sometimes used in combination to yield optimal cooling results. Some evaporative cooler may also serve as humidifiers in the heating season.
How Evaporative Cooler Works
An evaporative cooler is essentially a large fan with water-moistened pads in front of it. The fan draws warm outside air through the pads and blows the now-cooled air throughout the house.
Little distribution lines supply water to the top of the pads. Water soaks the pads and, thanks to gravity, trickles through them to collect in a sump at the bottom of the cooler. A little recirculating water pump sends the collected water back to the top of the pads.Since water is continually lost through evaporation, a float valve - much like the three that controls the water in a toilet tank - adds water to the sump when the level gets low. Under normal conditions, a swamp cooler can use between 3 to 15 gallons of water a day.
A large fan draws air through the pads, where evaporation drops the temperature approximately 20 degrees. The fan then blows this cooled air in to the house.Little units can be installed in a window, blowing cooled air directly in to a room. Larger units can blow air in to a central location, or the air can travel through ductwork to individual rooms.
Normal air conditioning is a closed method, taking air from inside a house and recycling it. For air conditioning to function properly, doors and windows should be closed. Evaporative cooler, however, takes air from outside the house. For evaporative cooler to work properly, the cooled outside air must be allowed to escape. By choosing which doors or windows in your home you leave open, you can to help direct the flow of cooled air to areas where it is needed.
posted by liensa for Evaporative Cooler at 11:50 PM of Evaporative Cooler
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