Process network synthesis: Difference between revisions

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'''Process Networknetwork Synthesissynthesis''' (PNS) is a method to represent a process structure in a ‘directed'directed bipartite graph’graph'. The Process Networknetwork Synthesissynthesis uses the P-graph method to create a process structure. ScientificThe scientific aim of this method is to find optimum structures.

Process Networknetwork Synthesissynthesis uses a bipartite graph method [[P-graph]]<ref>[http://p-graph.comorg/ P-graph method]</ref> and employs combinatorial rules to find all feasible network solutions (maximum structure) and links raw materials to desired products related to the given problem. With a [[branch and bound]] optimisation routine and by defining the target value an optimum structure can be generated that optimises a chosen target function.

Process Network Synthesis was originally developed to solve chemical process engineering processes. Target value as well as the structure can be changed depending on the field of application. Thus many more fields of application followed.

==Applications==

At [[Pannon University]] software the tools PNS Editor and PNS Studio were programmed to generate maximum structure of processes. This software includes the p-graph method and MSG, SSG and ABB [[branch and bound]] algorithms to detect optimum structures within the maximum available process flows.<ref>{{cite journalbook|last1=Friedler|first1=F.|last2=Varga|first2=J.B.|last3=Feher|first3=E.|last4=Fan|first4=L.T.|title=State of the Art in Global Optimization |chapter=Combinatorially Accelerated Branch-and-Bound Method for Solving the MIP Model of Process Network Synthesis|journal=Computational Methods and Applications|date=1996|volume=7|pages=609-626609–626|doi=10.1007/978-1-4613-3437-8_35|urlseries=http://link.springer.com/chapter/10.1007%2F978Nonconvex Optimization and its Applications|isbn=978-1-4613-34373439-8_352}}</ref>

PNS is used in different applications where it can be used to find optimum process structures like:

* Process engineering: Chemical process designs and the Synthesis of chemical processes is applied in different case studies.<ref>{{cite journal|last1=Friedler|first1=F.|last2=Varga|first2=J.B.|last3=Fan|first3=L.T.|title=Decision-mapping for design and synthesis of chemical processes: applications to reactor-network synthesis|journal=Chemical Engineering Science|date=1995|volume=50|issue=11|pages=1755-17681755–1768|doi=10.1016/0009-2509(95)00034-3|url=http://www.sciencedirect.com/science/article/pii/0009250995000343}}</ref><ref>{{cite journal|last1=Kalauz|first1=K.|last2=Sule|first2=Z.|last3=Bertok|first3=B.|last4=Friedler|first4=F.|last5=Fan|first5=L.T.|title=Extending Process-network Synthesis Algorithms with Time Bounds for Supply Network Design|journal=Chemical Engineering Transactions|date=2012|volume=29|doi=10.3303/CET1229044|url=http://www.aidic.it/cet/12/29/044.pdf}}</ref>

* Optimum energy technology networks for regional and urban energy systems: In case of regional and urban energy planning the financially most feasible solution for resource systems is selected as target value. With this setting material- and energy flows, energy demand and cost of technologies are considered and the optimum technology network can be found. Simultaneously the robustness of technologies due to price changes and limitations in resource availability can be identified.<ref>{{cite journal|last1=Narodoslawsky|first1=M.|last2=Niederl|first2=A.|last3=Halasz|first3=L.|title=Utilising renewable resources economically: new challenges and chances for process development|journal=Journal of Cleaner Production|date=2008|volume=16|issue=2|pages=164-170164–170|doi=10.1016/j.jclepro.2006.08.023|url=http://www.sciencedirect.com/science/article/pii/S0959652606003349}}</ref><ref>{{cite journal|last1=Niemetz|first1=N.|last2=Kettl|first2=K.H.|last3=Eder|first3=M.|last4=Narodoslawsky|first4=M.|title=RegiOpt Conceptual Planner -– Identifying possible energy network solutions for regions|journal=Chemical Engineering Transactions|date=2012|volume=29|doi=10.3303/CET1229087|url=http://www.aidic.it/cet/12/29/087.pdf}}</ref><ref>{{cite journal|last1=Lam|first1=H.L.|last2=Varbanov|first2=P.|last3=Klemeš|first3=J.|title=Regional Renewable Energy and Resource Planning|journal=Applied Energy|date=2011|volume=88|issue=2|pages=545-550545–550|doi=10.1016/j.apenergy.2010.05.019|url=http://www.sciencedirect.com/science/article/pii/S0306261910002047}}</ref><ref>{{cite journalbook|last1=Maier|first1=S.|last2=Narodoslawsky|first2=M.|title=Optimal Renewable Energy Systems for Smart Cities|journal=Computer Aided Chemical Engineering|volume=33|pages=1849-18541849–1854|doi=10.1016/B978-0-444-63455-9.50143-4|urlyear=http://www.sciencedirect.com/science/article/pii/B97804446345595014342014|isbn=9780444634344}}</ref>

* Evacuation routes in buildings: The aim is to find optimal routes to evacuate buildings depending on specific side parameters.<ref>{{cite journal|last1=Garcia-Ojeda|first1=J.C.|last2=Bertok|first2=B.|last3=Friedler|first3=F.|title=Planning Evacuation Routes with the P-graph Framework|journal=Chemical Engineering Transactions|date=2012|volume=29|doi=10.3303/CET1229256|url=http://www.aidic.it/cet/12/29/256.pdf}}</ref>

* Transportation routes: In this research area transportation routes with minimum cost and lowest environmental impact can be identified.<ref>{{cite journal|last1=Barany|first1=M.|last2=Botond|first2=B.|last3=Kovacs|first3=Z.|last4=Friedler|first4=F.|title=Solving vehicle assignment problems by process-network synthesis to minimize cost and environmental impact of transportation|journal=Clean Technologies and Environmental Policy|date=2011|volume=13|issue=4|pages=637–642|doi=10.1007/s10098-011-0348-2|urlhdl=http:2097//dx.doi.org/10.1007/s1009813975|s2cid=53497023 |hdl-011-0348-2access=free}}</ref>

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==References==

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==External links==

* [https://web.archive.org/web/20140714150854/http://www.p-graph.com/wiki/index.php/Process_Graph_%28P(P-graph%29)/ P-Graph wiki]

* [http://p-graph.comorg/ P-graph method]

{{DEFAULTSORT:Process Engineering}}

[[Category:Process engineering|Engineering management]]

[[Category:Chemical engineering]]