HydroMist™ products create, through high pressure, a very fine water misting vapor (or fog). As the fan blows air, the vapor completely flash evaporates. This action requires energy, which is obtained by drawing heat out of the air. The result is dramatically cooled air, reducing temperatures in the immediate area by up to 25° F (14° C), even in direct sunlight. Complete evaporation assures no wetting of people or environment. HydroMist™ products simply attach to a fresh source of water, like a spigot with a garden hose or indoor faucet.
Most cooling systems use a 'misting' system which doesn’t use our innovative high-pressure impeller nozzles, resulting in larger water droplets, which don't evaporate. These basically end up spraying water onto everyone and everything.
Other cooling systems make use of a trickling 'waterfall' behind a fan (also known as "swamp cooler.") The water is constantly recycled, while open to the environment. These systems get dust, dirt, pollen, etc. into the water sponge, which in turn gets recycled and blown onto participants. Also, forgetting to change the water leads to very nasty, moldy, smelly, conditions… thus the term “Swamp Coolers”.
Lifehacker.com has a short article about the concept of flash evaporation and how little water it can consume.* The article discusses the concept of creating your own flash evaporation system. HydroMist™ does not recommend creating completely DIY (from scratch) high-pressure misting systems, as improper use of high-pressure pumps (without appropriate safety sensors, switches, etc.) can cause damage to equipment and/or personal injury. HydroMist™ pumps are equipped with cut-off switches to prevent motor burn-out, in the case of insufficient inlet water pressure or flow. DIYers can have piece of mind with HydroMist™ flash evaporation components, knowing that they will assemble a quality high-pressure misting system.
*HydroMist™ does not endorse any articles at lifehacker.com. HydroMist™ does not monitor or moderate content located at external web sites; view at your own risk.