
354 Industrial Air Quality and Ventilation
© 2010 Taylor & Francis Group, LLC
TABLE 5.38
Summary of Industrial-Scale Test Results at ATU-1a Local Suction Units
Suction Unit
Designation
Flow Rate of
Evacuated
Air (m
3
/hr)
Flow Rate of
Evacuated Air Prior to
Retrofitting (m
3
/hr)
Negative
Pressure in
the Cowl (Pa)
Dust Concentration in
Evacuated Air (g/m
3
) Material Carryover (kg/hr)
Before
Retrofitting
After
Retrofitting
Before
Retrofitting
After
Retrofitting
From cowl of conveyor
#51 drive drum
8000 6000 6 5.6 1.1 34 13.0
12,000
9
From pellet storage bin 10,000 1700 4 47 6.7 80 72
10,800
20
From cowl of conveyor
#52 drive drum
8000 8300 6 41 1.6 340 21
12,900
13
From pellet ...