Tips & Tricks no. 5 - How to calculate the correct total air quantity
As a rule the ideal powder velocity to is 10 - 15 m/s. To achieve this result you must calculate the total air. The two crucial factors in this are the values for:
For the sample calculation below we assume a powder velocity of 12 m/s and an internal hose diameter of 9 mm (r = 4.5 mm).
- The internal diameter of the hose
- The velocity of the powder
|This is the formula:|
|and here's the calculation:|
In real terms this means that you must set a total air figure (feed and dosage air together) of 2.7m3/h. To make things a little easier for you we have already calculated the total air quantity for the most common internal hose diameters:
|Internal hose Ø
Learn how to set the total air in the next issue of our Tips & Tricks.