SOLUTIONS OF HW NO 6 MASS TRANSFER Che421 spring 2016.xlsx

SOLUTIONS OF HW NO 6 MASS TRANSFER Che421 spring 2016.xlsx...

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PROBLEM NO. 1 PARAMETER VALUE UNIT PA1 0.2 atm PA2 0.05 atm P total 1 atm FOR NB =0 k G 1.08 lbm mole/(h ft2 atm) Calculate KG' and NA FOR NA = - NB PB1 0.8 atm PB2 0.95 atm y B1 0.8 dim y B2 0.95 dim y BM 0.8728529284 lbm mole/(h ft2 atm) k' G 0.9426811626 lbm mole/(h ft2 atm) ( PA1 - PA2) 0.15 atm NA 0.1414021744 lbm mole/(h ft2 )

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PROBLEM NO. 2 Wetted wall column AIR - H2S IS FLOWING OVER H2O FILM PARAMETER VALUE UNIT P total 1.5 atm 1 atm 101.325 Kpa P total 151.9875 Kpa Temperature 30 C Temperature 303.16 K R 8.314 m3- Kpa/(Kgmol -K) RT 2520.47224 m3- Kpa/(Kgmol) k c' 0.0009567 m/sec MWt H2S 34 A = H2S Henery's Law Henery's Constant 609 atm XA1 @ Liq interface 2.00E-05 atm PA1 CALCULTED 0.01218 atm PA2 GIVEN 0.05 atm ( PA1 - PA2) -0.03782 atm ( PA1 - PA2) -3.8321115 Kpa Calculate Rate of H2S Absorption Flow water Down A Flow Air - H2S Upward B CASE NA = -NB EMCD
k G' =k c' /RT 3.7957172661E-007 Kgmole/(m2-sec- Kpa) NA= k G'(PA1-PA2) -1.454561179E-006 Kgmole/(m2-sec) PROBLEM NO. 3 Estimate kG of water vapor in air in a large duct past different geometries

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• Spring '16
• albhilil

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