Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/xmlui/handle/10054/10446
Title: A new method for sizing mass exchange units without the singularity of the Kremser equation
Authors: FRASER, DM
SHENOY, UV
Keywords: Cost Targets
Networks
Minimization
Replacement
Models
Issue Date: 2004
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Citation: COMPUTERS & CHEMICAL ENGINEERING, 28(11), 2331-2335
Abstract: 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
URI: 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
ISSN: 0098-1354
Appears in Collections:Article

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