# 001165 lbfft or 0001165322 00375 lbms2 weber number

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Unformatted text preview: .52 (continued) Analysis: (c) at the top of the column (continued) HL = 0.174 1 = 0.117 m 1.485 From Eq. (6-132), for Montz, using SI units, 1 1 HL = CL 12 = 0.0253 1/ 6 4hL DL au L m 1/ 2 uL a a 1 1 = 1.165 12 aPh 1/ 6 4(0.0241)(0.930) (3.0 10-9 )(300)(0.00180) 1/ 2 0.00180 300 a aPh a aPh To compute (aPh /a), we need for the liquid phase, the Reynolds, Weber, and Froude numbers from equations (6-138), (6-139), and (6-140), respectively, based on the packing hydraulic diameter from (6-137). d h = packing hydraulic diameter = 4 0.930 =4 = 0.0124 m = 0.0407 ft a 300 Reynolds number = N ReL ,h = uL d h L (0.00591)(0.0407)(48) = = 49.1 L [(0.35)(0.000672)] Weber number = N WeL ,h = 2 u L L d h ( 0.00898 ) (48)(0.407) = = 0.00421 0.0375 2 2 Froude number = N FrL ,h ( 0.00898) = 0.0000615 u2 = L = gd h 32.2(0.0407) From (6-136), aPh -1/ 2 = 1.5 ( ad h ) N Re L ,h a = 1.5 [ (300)(0.0124)] ( ) (N -0.2 We L , h ) (N ) 0.75 FrL , h -0.45 -1/ 2 ( 49.1) ( 0.00421) ( 0.0000615 ) -0.2 0.75 -0.45 = 0.47 HL = 0.0253 1 = 0.054 m 0.47 Exe...
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## This note was uploaded on 09/08/2008 for the course CHE 244 taught by Professor Selebi during the Spring '06 term at Lehigh University .

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