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Data from University of Technology Advance Knowledge in Green Technology (Fixed-flowrate total water network synthesis under uncertainty with risk...

August 12, 2014



Data from University of Technology Advance Knowledge in Green Technology (Fixed-flowrate total water network synthesis under uncertainty with risk management)

By a News Reporter-Staff News Editor at Journal of Technology -- Current study results on Green Technology have been published. According to news reporting out of Tronoh, Malaysia, by VerticalNews editors, research stated, "This work addresses the problem of integrated water network synthesis under uncertainty with risk management. We consider a superstructure consisting of water sources, regenerators, and sinks that leads to a mixed-integer quadratically-constrained quadratic program (MIQCQP) for a fixed-flowrate total water network synthesis problem."

Our news journalists obtained a quote from the research from the University of Technology, "Uncertainty in the problem is accounted for via a recourse-based two-stage stochastic programming formulation with discrete scenarios that gives rise to a multiscenario MIQCQP comprising network design in the first stage and its operation in the second stage acting as recourse. In addition, we extend the model to address risk management using the Conditional Value-at-Risk (CVaR) metric. Because a large number of scenarios is often required to capture the underlying uncertainty of the problem, causing the model to suffer from the curse of dimensionality, we propose a stepwise solution strategy to reduce the computational load. We illustrate this methodology on a case study inspired from the water network of a petroleum refinery in Malaysia. The presence of nonconvex bilinear terms necessitates the use of global optimization techniques for which we employ a new global MIQCQP solver, GAMS/GloMIQO and verify the solutions with BARON."

According to the news editors, the research concluded: "Our computational results show that total water network synthesis under uncertainty with risk management problems can be solved to global optimality in reasonable time."

For more information on this research see: Fixed-flowrate total water network synthesis under uncertainty with risk management. Journal of Cleaner Production, 2014;77():79-93. Journal of Cleaner Production can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Journal of Cleaner Production - www.elsevier.com/wps/product/cws_home/30440)

Our news journalists report that additional information may be obtained by contacting C.S. Khor, Univ Teknol PETRONAS, Dept. of Chem Engn, Tronoh 31750, Perak, Malaysia. Additional authors for this research include B. Chachuat and N. Shah.

Keywords for this news article include: Asia, Tronoh, Malaysia, Green Technology

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Source: Journal of Technology


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