| Titre : | Development of a generalized mixed integer nonlinear programming model for assessing and improving the operational flexibility of water network designs (2009) |
| Auteurs : | Chuei-Tin Chang, Auteur ; Bao-Hong Li, Auteur ; Chih-Wen Liou, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N° 7, Avril 2009) |
| Article en page(s) : | pp. 3496–3504 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Water network Operational flexibility Mixed integer nonlinear program |
| Résumé : | In designing and operating any water network, a typical issue that must be addressed is concerned with the uncertain process conditions. A systematic procedure is proposed in this paper to enhance the operational flexibility of a given structure. Specifically, two design options have been investigated: (1) relaxation of the allowed maximum freshwater consumption rate in the nominal design and (2) installation of auxiliary pipelines and/or elimination of existing ones. The flexibility index model proposed by Swaney and Grossmann (1985) has been modified and formulated in a generalized format to evaluate the impact of introducing various modifications into an existing network. Since this model is a mixed integer nonlinear program (MINLP), it is in general very difficult to locate the global optima in the iterative solution processes. A simple and effective initialization procedure has also been devised in this work to facilitate successful convergence. The effectiveness of the proposed approach is demonstrated with two examples in this paper. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie8015363 |
