4.16 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: Size Range, um 0-2 2-10 10-20 20-40 40-70 >70 Mass Percent in Size Range 10 20 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: W₁ = 20 inches H₁ = 30 inches N₂ = 8 turns V₁ = 70 ft/sec Pp = = 62.4 lb/ft³ The viscosity of the air is 1.2(10)-5 lb/ft-sec. Verify or refute this recommendation.
4.16 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: Size Range, um 0-2 2-10 10-20 20-40 40-70 >70 Mass Percent in Size Range 10 20 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: W₁ = 20 inches H₁ = 30 inches N₂ = 8 turns V₁ = 70 ft/sec Pp = = 62.4 lb/ft³ 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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Transcribed Image Text:4.16 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:
Size Range, µm
0-2
2-10
10-20
20-40
40-70
>70
Mass Percent in Size Range
10
20
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:
W₁ = 20 inches
Hi = 30 inches
N₂ = 8 turns
V₁ = 70 ft/sec
Pp = 62.4 lbm/ft³
The viscosity of the air is 1.2(10)-5 lbm/ft-sec. Verify or refute this
recommendation.
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