Elementary Principles 69 - 4.37 (cont'd) b g around the...

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4- 28 4.37 (cont’d) Balances around the mixing point involve 3 unknowns mmx 36 ,, bg , as do balances around the filter 46 , but the tub only involves 2 mm 34 , and 2 balances are allowed for each subsystem. Balances around tub , Balances around mixing point mx 6 , (solves Part (b)) a. 95% dirt removal : m 1 005 20 010 == .. . b g lb dirt m Overall dirt balance : 20 010 092 2065 55 . . =+ = lb dirt m Overall Whizzo balance : m 2 3 008 2065 317 = . b g b g lb Whizzo lb Whizzo b. Tub dirt balance : 2 003 010 013 + = + . ( 1 ) Tub Whizzo balance : 097 3 087 = + ( 2 ) Solve (1) & (2) simultaneously 204 193 = = ., . lb lb Mixing pt. mass balance : 317 173 66 . + = = lb lb Mixing pt. Whizzo balance : () ( ) ( ) 3.17 17.3 0.97 20.4 0.961 lb Whizzo/lb 96%Whizzo, 4% dirt xx += = 4.38 a. C mixer 3 Filter 3 Discarded
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This note was uploaded on 02/27/2012 for the course CHEMICAL E 312 taught by Professor Cheung during the Fall '11 term at The University of Akron.

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