North American growers favor high pressure fog systems

U.S. based manufacturer of high pressure fog systems Microcool have been very busy in the greenhouse industry this quarter with multiple projects worldwide. According to Microcool's Mark Stanley, Canadian growers of Origino installed two additional systems earlier in the year. They have been using the adiabatic cooling systems non-stop since commissioning."

Microcool furthermore installed several high pressure misting installations at several small research greenhouses. "These have been equipped with FOCUS systems installed by our partners Winandy, Rough Bros and others. As well as this, we have been working on a new system in Las Vegas for a major greenhouse grower. This system includes pump systems with the capacity of each handling up to 3,250 nozzles."

Adiabatic cooling

Fogging systems work on the principle of adiabatic cooling, explained Microcool's Mark Stanley. They create a fine fog by forcing pressurized water through a small nozzle. In the case of MicroCool's fogging system, the water pressure is around 70 bar with a nozzle opening of 200 micrometers. The water pressure and size of the nozzle force out billions of water droplets that are 10 microns in diameter, or about one-tenth the diameter of a human hair. Because a smaller droplet has a larger surface area relative to volume, the droplets float in the air and evaporate quickly – much faster than larger water droplets that fall faster and take longer to evaporate. Through evaporative cooling, the greenhouse temperature drops. The smaller the droplet, the greater the cooling effect.

For more information:
MicroCool
Mark Stanley
+1-760-834-3345
mark.stanley@microcool.com
www.microcool.com