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Air to cloth ratio by cleaning method.

Cleaning methodTypical air to cloth ratio (m/min)Relative bag life
Shaker0.8Long
Reverse air0.6Longest
Pulse jet2.0Shorter
Pulse jet, abrasive dust1.4Short

Why does pulse jet cleaning permit the highest air to cloth ratio?

  • A.Aggressive cleaning sustains a higher velocity
  • B.Its bags are made of stronger material
  • C.It operates at a lower pressure drop
  • D.It collects a coarser dust

Answer: A

The more effectively the cake is removed, the higher the velocity the fabric can sustain before the pressure drop becomes unacceptable. The price is paid in mechanical wear, which shows up directly as shorter bag life.

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