Do I have to use a pump or can I operate my mist cooling system directly from mains water?

A misting system without a high pressure pump is a micro IRRIGATION system—good for plants , bad for cooling ! 

The HIGH PRESSURE PUMP CONTROLLER , operating at 70 Bar (1000 psi) ensures an adequate supply of correctly sized atomized water droplets and prevents wetting of the surrounding area.

A duty cycle timer incorporated into the pump permits timing of the operating cycle. This permits control of the amount of micro droplets being produced whilst the high pressure operation ensures droplets sized to permit adequate hang time in the air resulting in the flash evaporation process -  critical to cooling. Oversized droplets are heavy and fall to the ground before they flash evaporate. This is what causes wetting. A high pressure pump controller is critical to an effective mist cooling system. See hang time (Drift) chart below.

Effect of Droplet Size on Drift Potential
Diameter in microns Time to fall 10 feet in still air
1 (fog) 28 hours

10 (fog)

17 minutes
100 (fog) 11 seconds
200 (fine spray) 4 seconds
400 (course spray) 2 seconds
1,000 (course spray) 1 second
 
 

FAQs

  • How does Mist Cooling work? +

    Installation of a COLDMIST mist cooling system permits the atomization of water to micro droplets around 6-8 microns in size. Read More
  • Will the misting system cause wetting? +

    The simple answer is NO. Correctly installed and operated a mist cooling system will not cause wetting. Read More
  • Do I have to use a pump or can I operate my mist cooling system directly from mains water? +

    A misting system without a high pressure pump is a micro IRRIGATION system—good for plants , bad for cooling !  The HIGH PRESSURE Read More
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