A flour mill has been required to install particulate control equipment to remove 90% of its emissions. A testing firm has determined a size distribution of the flour as follows: TI Size Range, pm Mass Percent in Size Range 10 0-2 2-10 20 10-20 20-40 40-70 >70 20 25 20 5 A consulting firm, B. S. Schuters, Inc., has recommended a two- stage cyclone (two cyclones in series) for this problem, and has come up with the following design: W; = 20 inches H; = 30 inches N. = 8 turns Vị = 70 ft/sec Pp = 62,4 lb/ft The viscosity of the air is 1.2(10)-5 lb,/ft-sec. Verify or refute this recommendation.
A flour mill has been required to install particulate control equipment to remove 90% of its emissions. A testing firm has determined a size distribution of the flour as follows: TI Size Range, pm Mass Percent in Size Range 10 0-2 2-10 20 10-20 20-40 40-70 >70 20 25 20 5 A consulting firm, B. S. Schuters, Inc., has recommended a two- stage cyclone (two cyclones in series) for this problem, and has come up with the following design: W; = 20 inches H; = 30 inches N. = 8 turns Vị = 70 ft/sec Pp = 62,4 lb/ft The viscosity of the air is 1.2(10)-5 lb,/ft-sec. Verify or refute this recommendation.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Answer the attached question.
Transcribed Image Text:A flour mill has been required to install particulate control
equipment to remove 90% of its emissions. A testing firm has
determined a size distribution of the flour as follows:
TI
Size Range, pm
Mass Percent in Size Range
10
0-2
2-10
20
10-20
20-40
40-70
>70
20
25
20
5
A consulting firm, B. S. Schuters, Inc., has recommended a two-
stage cyclone (two cyclones in series) for this problem, and has
come up with the following design:
W; = 20 inches
H; = 30 inches
N. = 8 turns
Vị = 70 ft/sec
Pp = 62,4 lb/ft
The viscosity of the air is 1.2(10)-5 lb,/ft-sec. Verify or refute this
recommendation.
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