Designing Optimal Water Networks for the Appropriate Economic Criteria

The syntheses of water network systems are usually performed by minimizing the total annual cost. In this contribution, Mixed Integer Nonlinear Programming (MINLP) syntheses of water networks are performed by using various economic objectives, in order to investigate their effects on the structural,...

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Main Authors: Z.N. Pintaric, N. Ibric, E. Ahmetovic, I.E. Grossmann, Z. Kravanja
Format: Article
Language:English
Published: AIDIC Servizi S.r.l. 2014-08-01
Series:Chemical Engineering Transactions
Online Access:https://www.cetjournal.it/index.php/cet/article/view/5472
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author Z.N. Pintaric
N. Ibric
E. Ahmetovic
I.E. Grossmann
Z. Kravanja
author_facet Z.N. Pintaric
N. Ibric
E. Ahmetovic
I.E. Grossmann
Z. Kravanja
author_sort Z.N. Pintaric
collection DOAJ
description The syntheses of water network systems are usually performed by minimizing the total annual cost. In this contribution, Mixed Integer Nonlinear Programming (MINLP) syntheses of water networks are performed by using various economic objectives, in order to investigate their effects on the structural, environmental, and economic characteristics of optimal water networks. Batch-semicontinuous and isothermal continuous water networks were analyzed during this study. Significant differences between optimal networks were obtained when using different economic objectives. Minimization of freshwater costs produced highly integrated designs with high levels of water reuse, regeneration reuse or recycling, but low profitability. In contrast, maximization of the internal rate of return resulted in highly profitable designs with low investment and a low level of water integration. Either minimization of the total annual cost, maximization of the net present value, or maximization of the annual profit produced designs with intermediate or high levels of integration between water using operations, and modest profitability. These criteria produced compromise solutions with proper trade-offs between the profitabilities and sustainabilities of water network designs.
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spelling doaj.art-01df97bc85b249858a57500ab055c33b2022-12-21T17:21:53ZengAIDIC Servizi S.r.l.Chemical Engineering Transactions2283-92162014-08-013910.3303/CET1439171Designing Optimal Water Networks for the Appropriate Economic CriteriaZ.N. PintaricN. IbricE. AhmetovicI.E. GrossmannZ. KravanjaThe syntheses of water network systems are usually performed by minimizing the total annual cost. In this contribution, Mixed Integer Nonlinear Programming (MINLP) syntheses of water networks are performed by using various economic objectives, in order to investigate their effects on the structural, environmental, and economic characteristics of optimal water networks. Batch-semicontinuous and isothermal continuous water networks were analyzed during this study. Significant differences between optimal networks were obtained when using different economic objectives. Minimization of freshwater costs produced highly integrated designs with high levels of water reuse, regeneration reuse or recycling, but low profitability. In contrast, maximization of the internal rate of return resulted in highly profitable designs with low investment and a low level of water integration. Either minimization of the total annual cost, maximization of the net present value, or maximization of the annual profit produced designs with intermediate or high levels of integration between water using operations, and modest profitability. These criteria produced compromise solutions with proper trade-offs between the profitabilities and sustainabilities of water network designs.https://www.cetjournal.it/index.php/cet/article/view/5472
spellingShingle Z.N. Pintaric
N. Ibric
E. Ahmetovic
I.E. Grossmann
Z. Kravanja
Designing Optimal Water Networks for the Appropriate Economic Criteria
Chemical Engineering Transactions
title Designing Optimal Water Networks for the Appropriate Economic Criteria
title_full Designing Optimal Water Networks for the Appropriate Economic Criteria
title_fullStr Designing Optimal Water Networks for the Appropriate Economic Criteria
title_full_unstemmed Designing Optimal Water Networks for the Appropriate Economic Criteria
title_short Designing Optimal Water Networks for the Appropriate Economic Criteria
title_sort designing optimal water networks for the appropriate economic criteria
url https://www.cetjournal.it/index.php/cet/article/view/5472
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AT nibric designingoptimalwaternetworksfortheappropriateeconomiccriteria
AT eahmetovic designingoptimalwaternetworksfortheappropriateeconomiccriteria
AT iegrossmann designingoptimalwaternetworksfortheappropriateeconomiccriteria
AT zkravanja designingoptimalwaternetworksfortheappropriateeconomiccriteria