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Pneumatic Dust Control in Grain Elevators Guidelines for Design Operation and Maintenance (1982) / Chapter Skim
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Appendix A: Definitions
Pages 89-94

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From page 89...
... Air Cleaner; A device designed for the purpose of removing atmospheric airborne impurities such as dusts, gases, vapors, fumes, and smokes. (Air cleaners include air washers, air filters, electrostatic precipitators, and charcoal filters.)
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From page 90...
... In heat transmission this meaning has been extended to include both forced and natural motion or circulation. Cyclone; Mechanical dust collector using inertial principles for dust separation.
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From page 91...
... Fabric Filter; A dust collector using a fabric for separation of dust from air. Filter Drag; Pressure drop, inches WG per cubic foot of air per minute, per square foot of filter medium.
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From page 92...
... Magnehelic Gauge; A pressure differential gauge that, when used in filter-type dust collectors, measures the static pressure difference between the dust-laden air intake (lower) chamber of a collector and the clean air outlet (upper)
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From page 93...
... Pulse Jet; A system of bag cleaning using a momentary burst of compressed air in the discharge nozzle of a filter bag, which stops filter flow and inflates the bag in the opposite direction. Reverse Jet Cleaning; A cleaning method using a traveling ring traversing the exterior of the filter bag.
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From page 94...
... ; A term used after numerical pressure figures, that means the figure is calculated in terms of inches of water as obtained from the differential water levels of the two legs of a manometer. (Example; 2.8 inches WG)
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Key Terms

  • cubic feet
  • cubic foot
  • atmospheric pressure
  • water vapor
  • square foot

  • air cleaning
  • air stream
  • velocity pressure
  • dust collector
  • air velocity

  • actual air
  • compressed air
  • atmospheric air
  • pressure difference
  • filter bag

  • fabric filter
  • filter medium
  • air density
  • pressure drop
  • usually expressed

  • momentary burst
  • regulating airflow
  • standard temperature
  • design duct
  • unit volume

  • jet cleaning
  • particulate loadings
  • duct velocity
  • dust collectors
  • minimum design


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