Q4/ It is desired to carry out a process in a packed column with heat transfer. The column an be packed either with (1.27 cm) raschig rings or (1.27 cm) Berl saddles. Porosities for both are (0.63). The surface area per unit volume values for the Raschig rings and Berl saddles are, respectively, (33.83) and (43.28 m²/m³). Which packing would require the lower superficial mass velocity? Assume (Ref≤ 50). The shape factor values for the Raschig rings and Berl saddles are (0.79) and (0.80), respectively. h=0.910(Res) (Pr)-2/3 (Cp), Go

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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Q4/ It is desired to carry out a process in a packed column with heat transfer. The column
an be packed either with (1.27 cm) raschig rings or (1.27 cm) Berl saddles. Porosities for
both are (0.63). The surface area per unit volume values for the Raschig rings and Berl
saddles are, respectively, (33.83) and (43.28 m²/m³). Which packing would require the lower
superficial mass velocity? Assume (Ref≤ 50). The shape factor values for the Raschig rings
and Berl saddles are (0.79) and (0.80), respectively.
h₁
(Cp), Go
=
0.910(Re)-0.51 (Pr+)-2/3
Transcribed Image Text:Q4/ It is desired to carry out a process in a packed column with heat transfer. The column an be packed either with (1.27 cm) raschig rings or (1.27 cm) Berl saddles. Porosities for both are (0.63). The surface area per unit volume values for the Raschig rings and Berl saddles are, respectively, (33.83) and (43.28 m²/m³). Which packing would require the lower superficial mass velocity? Assume (Ref≤ 50). The shape factor values for the Raschig rings and Berl saddles are (0.79) and (0.80), respectively. h₁ (Cp), Go = 0.910(Re)-0.51 (Pr+)-2/3
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