Flash evaporation is the science behind Miracool® outdoor evaporative cooling

Flash Evaporation works by forcing water through specially designed misting nozzles to create a fog of ultra fine water droplets. The higher the pressure the smaller the droplets and the faster the evaporation. A High-pressure Misting System that produces 800 psi (5500 kPa) utilises a process called ‘flash evaporation’, which occurs when the high-pressure droplets are forced out through nozzles with very small orifices, around the size of a hair on your head.
It creates a very fine mist that results in a significant drop in temperature without you getting wet.

How Miracool® Outdoor Evaporative Cooling Systems cool the air

When ‘Flash evaporation’ occurs microscopic water droplets absorb the heat present in the environment & evaporate, becoming water vapour like a gas. During this process the energy used to convert the water to a vapor is eliminated from the environment, this process cools the air.

Miracool® Operating Principle

In its simplest form, fogging systems incorporate a high pressure pump and a spray nozzle designed to produce water droplets smaller than the diameter of a human hair, as small as 5 Microns (5 millionths of a metre).

When water droplets this small hit the surrounding hot air, they ‘Flash Evaporate’, reducing
the surrounding temperature between 20 and 30 degrees.
This principle of fogging is scientifically known as ‘Thermal Dynamics’ and ensures that blistering outdoor environment can be transformed into a comfortable and pleasant experience.
When fogging systems are utilized within an enclosed environment, such as greenhouse, potato storage shed, wine storage facility or ‘clean room’ assembly etc, high humidity can be achieved without excessive moisture reaching the ground.

These characteristics make fogging systems safe and cost effective alternatives than other more hazardous and expensive methods of cooling and humidification. With residential and/or outdoor application of the fogging system as cooling or ‘mistscaping’, the pump, supply piping and nozzles are fitted outdoors to the exposure of the normal day temperature.