8/25/2023 0 Comments Swamp cooler dew point chartIn highly humid climates, evaporative cooling may have little thermal comfort benefit beyond the increased ventilation and air movement it provides.Ĭivilizations throughout the ages have found ingenious ways to combat the heat in their region. For example, industrial plants, commercial kitchens, laundries, dry cleaners, greenhouses, spot cooling (loading docks, warehouses, factories, construction sites, athletic events, workshops, garages, and kennels) and confinement farming (poultry ranches, hog, and dairy) all often employ evaporative cooling. In locations with moderate humidity there are many cost-effective uses for evaporative cooling, in addition to their widespread use in dry climates. Some evaporative coolers may also serve as humidifiers in the heating season. However, evaporative cooling and vapor-compression air conditioning are sometimes used in combination to yield optimal cooling results. In dry, arid climates, the installation and operating cost of an evaporative cooler can be much lower than refrigerative air conditioning, often by 80% or so. Evaporative air conditioning is also popular and well suited to the southern (temperate) part of Australia. For example, in the United States, the western/mountain states are good locations, with swamp coolers very prevalent in cities like Denver, Salt Lake City, Albuquerque, El Paso, Tucson, and Fresno where sufficient water is available. For example, an evaporative cooler may be designed to cool coils of a large air conditioning system to increase its efficiency.Įvaporative cooling is especially well suited for climates where the air is hot and humidity is low. Air washers and wet cooling towers use the same principles as evaporative coolers but are optimized for purposes other than cooling the air inside a building. In the United States, the use of the term swamp cooler may be due to the odor of algae produced by early units. Evaporative cooling differs from air conditioning by refrigeration and absorptive refrigeration, which use vapor-compression or absorption refrigeration cycles. An evaporative cooler (also swamp cooler, desert cooler, and wet air cooler) is a device that cools air through the simple evaporation of water.
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