Lewis relation ship in air drying
Course:- Chemical Engineering
Reference No.:- EM13943442

Assignment Help
Expertsmind Rated 4.9 / 5 based on 47215 reviews.
Review Site
Assignment Help >> Chemical Engineering

A value of mass transfer coefficient kg = 0.0150 kg /m2-s . it was also found that the corresponding heat transfer co efficient = hc = 15 j /m2-s

Hc = hc = 15 j/m2-s oc = 1000 * 0.015
Hc = kg ( mass transfer coefficient ) *1000

Mass transfer co efficient from a free water surface into air ( g -/m2-s ) = heat transfer coefficient from the air to the surface expressed in j/m2-soc.

Recalling that Lewis n0 = hc / Cs * Kg =1
( for air water system )

The Lewis no , which arises in gaseous diffusion theory = hc /kg. Cs , but for air of the humidity encountered in ordinary practice , Cs = Cp = 1.02 kj / kg oc , there fore ,numerically . if hc( heat transfer coefficient ) is in j/m2 -s -oc and kg ( mass transfer coefficient ) in kg /m2 -s ,
Kg ( mass transfer coefficient ) = hc /1000
Where hc = heat transfer coefficient
Kg = mass transfer co efficient

The value of hc predicted , using , the standard relationship for heat transfer co efficient is written above as Mass transfer coefficient ( kg ) = heat transfer coefficient ( hc )

Put your comment

Ask Question & Get Answers from Experts
Browse some more (Chemical Engineering) Materials
Consult your reference library and find another explanation of hole versus electron flow. Using both descriptions, describe in your own words the process of hole conduction.
Draw up a two-way table for these figures with rows for the types of booking and columns for the length of stay. Deduce the figures that are not given by using the informati
i need 1 page about this book( engineering and chemical thermodynamic 2nd edition )what learn form this problem in book: 4.44 , 4.48 , 5.2 ,5.9 ,5.10, 5.29 ,5.39 ,5.46 ,6.19
If the stream has a cross-sectional area of 10 m2, what would the BOD concentration be 50 km downstream? (BOD is removed with a first-order decay rate constant equal to 0.20
A hydrocarbon liquid fuel (containing only C and H2) is burnt in air which produces a flue gas which analyses ( orsat analysis ) on dry basis as CO2 =1
Sinusoids of varying frequencies were applied to an open loop system and the following results were measured. (Data is from Seidel, 1975.) Construct a Bode diagram for the d
The organic solution is evaporated to dryness and then the product is purified by chromatography in methanol over aluminum oxide or silica gel. Sketch a block flow diagram o
Plot of the Fermi distribution function at two different temperatures. Calculate the Fermi timction at 6.5 eV if EF=6 .25 eV and T=300 K. Repeat for T=950 K assuming that th