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A new method for sizing mass exchange units without the singularity of the Kremser equation

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Title A new method for sizing mass exchange units without the singularity of the Kremser equation
 
Creator FRASER, DM
SHENOY, UV
 
Subject cost targets
networks
minimization
replacement
models
mass exchanger sizing
kremser equation
mass exchanger network synthesis
 
Description In this paper, we examine two different formulations of the Kremser equation for sizing mass exchange units. These formulations overcome the inherent singularity in the Kremser equation when the absorption factor A is equal to unity, by expressing the terms in the equation in a form which reduces to a ratio of two logarithmic mean values. These logarithmic mean values are then evaluated using the Underwood approach, yielding elegant expressions which give answers within 1% of the true values except at extreme values of the system parameters. It is proposed that these expressions should be adopted for sizing mass exchangers, especially in mixed-integer non-linear programming (MINLP) solutions for mass exchange networks. (C) 2004
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-23T07:56:37Z
2011-12-26T12:56:21Z
2011-12-27T05:44:53Z
2011-08-23T07:56:37Z
2011-12-26T12:56:21Z
2011-12-27T05:44:53Z
2004
 
Type Article
 
Identifier COMPUTERS & CHEMICAL ENGINEERING, 28(11), 2331-2335
0098-1354
http://dx.doi.org/10.1016/j.compchemeng.2004.04.009
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10446
http://hdl.handle.net/10054/10446
 
Language en