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|Title:||A new method for sizing mass exchange units without the singularity of the Kremser equation|
|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|
|Appears in Collections:||Article|
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