Evaporative Cooling

Evaporative cooling is a process by which moisture is evaporated into an air stream in order to lower the air’s temperature. The resulting air stream can be used to cool a building, other air streams, or the components of an air-conditioning system. The lower the relative humidity, the greater the possible cooling effect when moisture is added. This technology is a versatile and energy-efficient alternative or adjunct to compressor-based cooling. In favorable climates (most of the western United States and other dry-climate areas worldwide), evaporative cooling can meet most or all building cooling loads using as little as one-fourth the energy of conventional equipment. It can also be applied cost-effectively when integrated with conventional chiller systems. Using evaporative technology can also improve a facility’s load profile because it reduces the load associated with air conditioning, which often sets demand peaks.

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