|
Process
|
Type of Hood or Slot
|
Average Intake Velocity (FPM)
|
|
Aluminum Furnace
|
Enclosed Hood, Open One Side
Canopy Hood
|
150-200
200-250
|
|
Brass Furnace
|
Enclosed Hood, Open One Side
Canopy Hood
|
200-250
250-300
|
|
Chemical Laboratory
|
Enclosed Hood, Front Opening
Down Draft, Table Type
|
100-150
150-200
|
|
Degreasing
|
Canopy Hood
Slotted Sides, 2” – 4” Slots
|
150
1500-2000
|
|
Electric Welding
|
Portable Hoods, Open Face
Open Front Booth
|
200-250
100-150
|
|
Foundry Shakeout
|
Down Draft, Grill Table
Open Front Booth
|
250-450
150-200
|
|
Flour, Grain, Wood Dust
|
Canopy Hood
Side Slots, 3” – 4”
|
500
2000-2500
|
|
Kitchen Ranges
|
Canopy Hood
|
125-175
|
|
Metal Spraying
|
Open Front Booth
|
150-200
|
|
Paint Spraying
|
Open Front Booth
|
100-175
|
|
Paper Machine Drying
|
Canopy Hood
|
250-300
|
|
Pickling Tanks
|
Canopy Hood
Slotted Sides
|
200-250
250 CFM per sq. ft. of
tank surface
|
|
Plating Tanks
|
Canopy Hood
Slotted Sides
|
225-250
250 CFM per sq. ft. of
tank surface
|
|
Rubber Macerator
|
Canopy Hood
Slotted Sides, 2” – 4” Slot
|
200-250
2000-2500
|
|
Steam Tanks
|
Canopy Hood
|
125-175
|
|
Varnish Tanks
|
Canopy Hood
Slotted Sides, 2” – 4” Slot
|
225-300
2000-2500
|