About evaporative coolers:

Evaporative coolers that are also known as swamp coolers or desert coolers are basically a type of refrigeration system, which is based on the process of simple evaporation as the cooling mechanism. Their main difference with a traditional air conditioning system is that the later uses a phase change heat pump along with a compressor. Evaporative coolers are especially suited for those climates where the air has a high hot temperatures but the relatively the humidity is low. The installation and operating cost of a swamp cooler is much lower than that of traditional air conditioning systems. Also in those areas where the humidity is high there are many cost effective uses for evaporative cooling, which makes it preferred choice.

Evaporative cooling in water conservation:

Evaporative cooling systems are also widely used for commercial or industrial purposes throughout America. In those applications evaporative cooling is considered as a basic approach towards water conservation. Generally for residential purposes the amount of water used by your evaporative cooler will depend upon its size, air movement, and the relative humidity of the air. One most important point, which should be considered in this regard, is that the water usage rate always depends upon the amount of water used in bleed water. However it has reported that most of the evaporative coolers require a seasonal maintenance check-up and for more water efficient cooling, it is a mandatory task to check the evaporative coolers annually.

Advantages and benefits of evaporative cooling:

One of the basic advantages of evaporative cooling is that, the water from an evaporative cooler can be re-used for irrigation purposes. This use for irrigational purposes is a natural use for this water since the hot, dry conditions that often spur cooler use also spur irrigation demand. However, in desert areas the water has a high concentration of salts and water used from evaporative cooling systems for irrigation may be a concern for plants that are sensitive to water with a high mineral concentration. Other than this if the water is drained directly for irrigation, prolonged use of the coolers may result in over watering of the plants.