Documents disponibles écrits par cet auteur

An integrated framework for modeling, synthesis, analysis, and optimization of coal gasification-based energy and chemical processes / Siyu Yang in Industrial & engineering chemistry research, Vol. 51 N° 48 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15763-15777 Titre : An integrated framework for modeling, synthesis, analysis, and optimization of coal gasification-based energy and chemical processes Type de document : texte imprimé Auteurs : Siyu Yang, Auteur ; Qingchun Yang, Auteur ; Hengchong Li, Auteur Année de publication : 2013 Article en page(s) : pp. 15763-15777 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Coal  gasification  Optimization  Modeling Résumé : A framework is proposed for integration of unit modeling, process synthesis, analysis, optimization, and process design of coal gasification-based energy and chemical processes. The conceptual models of these processes are built by the modeling and synthesis blocks in the framework, which are the bases of analysis and optimization. A number of analysis techniques are employed in the framework to fully understand the characteristics of the processes and their performances from technical, economic, and environmental points of view. Life cycle assessment and sustainability analysis are also included in the framework. According to these multilayer analyses, optimization is included in this framework to explore the best process or the best operational parameter set. Because of the systematic integration of the above techniques, the proposed framework could provide a comprehensive study for coal gasification-based processes. Three coal gasification-based processes are selected as the study cases in this Article. They are an integrated gasification combined cycle process, a methanol production, and a coproduction process combining the first two processes. The exergy efficiencies and economic investments of the three processes are analyzed and compared. The key parameters for material distribution in the coproduction process are optimized from the exergy efficiency and the investment points of view. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26710613 [article] An integrated framework for modeling, synthesis, analysis, and optimization of coal gasification-based energy and chemical processes [texte imprimé] / Siyu Yang, Auteur ; Qingchun Yang, Auteur ; Hengchong Li, Auteur . - 2013 . - pp. 15763-15777. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15763-15777 Mots-clés : Coal  gasification  Optimization  Modeling Résumé : A framework is proposed for integration of unit modeling, process synthesis, analysis, optimization, and process design of coal gasification-based energy and chemical processes. The conceptual models of these processes are built by the modeling and synthesis blocks in the framework, which are the bases of analysis and optimization. A number of analysis techniques are employed in the framework to fully understand the characteristics of the processes and their performances from technical, economic, and environmental points of view. Life cycle assessment and sustainability analysis are also included in the framework. According to these multilayer analyses, optimization is included in this framework to explore the best process or the best operational parameter set. Because of the systematic integration of the above techniques, the proposed framework could provide a comprehensive study for coal gasification-based processes. Three coal gasification-based processes are selected as the study cases in this Article. They are an integrated gasification combined cycle process, a methanol production, and a coproduction process combining the first two processes. The exergy efficiencies and economic investments of the three processes are analyzed and compared. The key parameters for material distribution in the coproduction process are optimized from the exergy efficiency and the investment points of view. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26710613

The cascade optimization algorithm / Antonis C. Kokossis in Industrial & engineering chemistry research, Vol. 50 N° 9 (Mai 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5266-5278 Titre : The cascade optimization algorithm : a new distributed approach for the stochastic optimization of engineering applications Type de document : texte imprimé Auteurs : Antonis C. Kokossis, Auteur ; Patrick Linke, Auteur ; Siyu Yang, Auteur Année de publication : 2011 Article en page(s) : pp. 5266-5278 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Algorithm  Optimization Résumé : This paper introduces a new stochastic optimization approach in the form of a cascade optimization algorithm. The algorithm incorporates concepts from Markov processes while eliminating the inherent sequential nature that is a major obstacle preventing the exploitation of advances in distributed computing infrastructures. This method introduces partitions and pools to store intermediate solutions and corresponding objectives. A Markov process increases the population of partitions and pools. The population is distributed periodically, following an external certainty. With the use of partitions and pools, multiple Markov processes can be launched simultaneously for different partitions and pools. The cascade optimization algorithm holds a potential in two different fronts. One aims at its deployment in parallel and distributed computing environments. Through storage of solutions in the pools, the algorithm further offers cost-effective means to analyze intermediate solutions, visualize progress, and integrate optimization with data and/or knowledge management techniques without additional burden to the process. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128649 [article] The cascade optimization algorithm : a new distributed approach for the stochastic optimization of engineering applications [texte imprimé] / Antonis C. Kokossis, Auteur ; Patrick Linke, Auteur ; Siyu Yang, Auteur . - 2011 . - pp. 5266-5278. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5266-5278 Mots-clés : Algorithm  Optimization Résumé : This paper introduces a new stochastic optimization approach in the form of a cascade optimization algorithm. The algorithm incorporates concepts from Markov processes while eliminating the inherent sequential nature that is a major obstacle preventing the exploitation of advances in distributed computing infrastructures. This method introduces partitions and pools to store intermediate solutions and corresponding objectives. A Markov process increases the population of partitions and pools. The population is distributed periodically, following an external certainty. With the use of partitions and pools, multiple Markov processes can be launched simultaneously for different partitions and pools. The cascade optimization algorithm holds a potential in two different fronts. One aims at its deployment in parallel and distributed computing environments. Through storage of solutions in the pools, the algorithm further offers cost-effective means to analyze intermediate solutions, visualize progress, and integrate optimization with data and/or knowledge management techniques without additional burden to the process. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128649