Issue with Fan
A manufacturing company in NE Ohio was having issues with their dust collector not pulling sufficient air to vent their process adequately.
Their fan was unusually loud and vibrating badly.
Analysis and Remedy
We determined these issues were due to the following two reasons:
• Internal problems with the fan.
• Restrictions in air flow causing the fan to operate in an unstable part of its power curve.
• By taking air velocity measurements in their ductwork, we identified a section of ductwork that restricted air flow through the system.
o By changing a few sections of ductwork, we increased their volumetric flow rate.
• The belt driven fan had a bad vibration, suggesting the fan wheel was out of balance. By analyzing their system for pressure losses, we resized the fan for air volume and static pressure requirement. We determined the fan was not sized correctly for their application.
o The customer opted to replace the existing BELT driven fan for a more appropriately sized DIRECT DRIVE fan. This eliminates belt changes resulting in a quitter fan with less periodic maintenance.
o By keeping the horsepower of the same, we did not need to run new heavier gauge wires, saving the customer installation expenses.
o We made new inlet and exhaust transitions and completed the installation.
Conclusion
The new CHICAGO BLOWER fan is now in place running quieter and more efficiently than the one before. Another successful project for Cardinal Air Design!
