4.50. Following is a diagram of the shirt-cleaning process used by the Floods of Suds One-Day Laundry Services, Inc. The shirts are soaked in an agitated tub containing Whizzo, the Wonder Detergent, and are then wrung out and sent to a rinse stage. The dirty Whizzo is sent to a filter in which most of the dirt is removed, and the cleaned detergent is recycled back to join a stream of pure Whizzo, with the combined stream serving as the feed to the washtub. Wh Dirty shirts Clean shirts AGITATED Pure Wh 97% Wh TUB 87% Wh 8% Wh FILTER Recycled Wh Data: 1. Each 100 lb, of dirty shirts contains 2.01b, of dirt. 2. The washing removes 95% of the dirt in the dirty shirts. 3. For each 100 lb,m of dirty shirts, 25 lb,, of Whizzo leaves with the clean shirts, of which 22 Ib, is wrung back into the tub. 4. The detergent that enters the tub contains 97% Whizzo, and that which enters the filter contains 87%. The wet dirt that leaves the filter contains 8.0% Whizzo. (a) How much pure Whizzo must be supplied per 100 lbm of dirty shirts? (b) What is the composition of the recycled stream?
4.50. Following is a diagram of the shirt-cleaning process used by the Floods of Suds One-Day Laundry Services, Inc. The shirts are soaked in an agitated tub containing Whizzo, the Wonder Detergent, and are then wrung out and sent to a rinse stage. The dirty Whizzo is sent to a filter in which most of the dirt is removed, and the cleaned detergent is recycled back to join a stream of pure Whizzo, with the combined stream serving as the feed to the washtub. Wh Dirty shirts Clean shirts AGITATED Pure Wh 97% Wh TUB 87% Wh 8% Wh FILTER Recycled Wh Data: 1. Each 100 lb, of dirty shirts contains 2.01b, of dirt. 2. The washing removes 95% of the dirt in the dirty shirts. 3. For each 100 lb,m of dirty shirts, 25 lb,, of Whizzo leaves with the clean shirts, of which 22 Ib, is wrung back into the tub. 4. The detergent that enters the tub contains 97% Whizzo, and that which enters the filter contains 87%. The wet dirt that leaves the filter contains 8.0% Whizzo. (a) How much pure Whizzo must be supplied per 100 lbm of dirty shirts? (b) What is the composition of the recycled stream?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:4.50. Following is a diagram of the shirt-cleaning process used by the Floods of Suds One-Day Laundry
Services, Inc. The shirts are soaked in an agitated tub containing Whizzo, the Wonder Detergent, and
are then wrung out and sent to a rinse stage. The dirty Whizzo is sent to a filter in which most of the dirt
is removed, and the cleaned detergent is recycled back to join a stream of pure Whizzo, with the
combined stream serving as the feed to the washtub.
Wh
Dirty shirts
Clean shirts
AGITATED
Pure Wh 97% Wh
TUB
87% Wh
8% Wh
FILTER
Recycled Wh
Data:
1. Each 100 lb, of dirty shirts contains 2.01b, of dirt.
2. The washing removes 95% of the dirt in the dirty shirts.
3. For each 100 lb,m of dirty shirts, 25 lb,, of Whizzo leaves with the clean shirts, of which 22 Ib, is
wrung back into the tub.
4. The detergent that enters the tub contains 97% Whizzo, and that which enters the filter contains 87%.
The wet dirt that leaves the filter contains 8.0% Whizzo.
(a) How much pure Whizzo must be supplied per 100 lbm of dirty shirts?
(b) What is the composition of the recycled stream?
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