Publications
677 results found
Uesbeck F, Samsatli NJ, Papageorgiou LG, et al., 1998, Robust optimal fermentation operating policies, European Symposium on Computer Aided Process Engineering (ESCAPE 8), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S167-S174, ISSN: 0098-1354
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- Citations: 9
Avraam MP, Shah N, Pantelides CC, 1998, Modelling and optimisation of general hybrid systems in the continuous time domain, European Symposium on Computer Aided Process Engineering (ESCAPE 8), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S221-S228, ISSN: 0098-1354
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- Citations: 62
Sharif M, Shah N, Pantelides CC, 1998, On the design of multicomponent batch distillation columns, European Symposium on Computer Aided Process Engineering (ESCAPE 8), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S69-S76, ISSN: 0098-1354
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- Citations: 27
Dimitriadis AD, Shah N, Pantelides CC, 1998, Efficient modelling of partial resource equivalence in resource-task networks, European Symposium on Computer Aided Process Engineering (ESCAPE 8), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S563-S570, ISSN: 0098-1354
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- Citations: 7
Yee KL, Shah N, 1998, Improving the efficiency of discrete time scheduling formulation, European Symposium on Computer Aided Process Engineering (ESCAPE 8), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S403-S410, ISSN: 0098-1354
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- Citations: 41
Rotstein G, Shah N, Sorensen E, et al., 1998, Analysis and design of paint manufacturing processes, European Symposium on Computer Aided Process Engineering (ESCAPE 8), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S279-S282, ISSN: 0098-1354
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- Citations: 3
Das BP, Shah N, Chung PWH, 1998, Off-line scheduling a simple chemical batch process production plan using the ILOG scheduler, European Symposium on Computer Aided Process Engineering (ESCAPE 8), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S947-S950, ISSN: 0098-1354
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- Citations: 6
Shah N, 1998, Single- and multisite planning and scheduling: Current status and future challenges, 3rd International Conference on Foundations of Computer-Aided Process Operations, Publisher: AMER INST CHEMICAL ENGINEERS, Pages: 75-90, ISSN: 0065-8812
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- Citations: 102
Pantelides CC, Realff MJ, Shah N, 1997, Short-term scheduling of pipeless batch plants, CHEMICAL ENGINEERING RESEARCH & DESIGN, Vol: 75, Pages: S156-S169, ISSN: 0263-8762
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- Citations: 5
Yee KL, Shah N, 1997, Scheduling of multistage fast-moving consumer goods plants, JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY, Vol: 48, Pages: 1201-1214, ISSN: 0160-5682
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- Citations: 5
Dimitriadis VD, Shah N, Pantelides CC, 1997, Modeling and safety verification of discrete/continuous processing systems, AICHE JOURNAL, Vol: 43, Pages: 1041-1059, ISSN: 0001-1541
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- Citations: 35
Rotstein GE, Sorensen S, Voudouris VT, et al., 1997, Process concept studio: An experiment in academic/industrial collaboration, Joint 6th International Symposium on Process Systems Engineering/30th European Symposium on Computer Aided Process Engineering (PSE 97-ESCAPE-7), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S319-S324, ISSN: 0098-1354
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- Citations: 3
Elks P, Shah N, 1997, Optimisation-based condition monitoring strategies, Symposium on 1997 Jubilee Research Event, Publisher: INST CHEMICAL ENGINEERS, Pages: 781-784
Yee KL, Shah N, 1997, Model reduction techniques for the scheduling of multistage fast-moving consumer goods plants, Symposium on 1997 Jubilee Research Event, Publisher: INST CHEMICAL ENGINEERS, Pages: 761-764
Rotstein G, Voudouris VT, Sorensen E, et al., 1997, Batch plant optimisation: A collaborative case study, Symposium on 1997 Jubilee Research Event, Publisher: INST CHEMICAL ENGINEERS, Pages: 693-696
Dimitriadis AD, Shah N, Pantelides CC, 1997, RTN-based rolling horizon algorithms for medium term scheduling of multipurpose plants, Joint 6th International Symposium on Process Systems Engineering/30th European Symposium on Computer Aided Process Engineering (PSE 97-ESCAPE-7), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S1061-S1066, ISSN: 0098-1354
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- Citations: 91
Schreiber D, Samsatli NJ, Shah N, 1997, Model-based design of chromatography columns, Symposium on 1997 Jubilee Research Event, Publisher: INST CHEMICAL ENGINEERS, Pages: 757-760
Srinivasan R, Dimitriadis VD, Shah N, et al., 1997, Integrating knowledge-based and mathematical programming approaches for process safety verification, Joint 6th International Symposium on Process Systems Engineering/30th European Symposium on Computer Aided Process Engineering (PSE 97-ESCAPE-7), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S905-S910, ISSN: 0098-1354
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- Citations: 11
Dedopoulos IT, Shah N, 1996, Long-term maintenance policy optimization in multipurpose process plants, Chemical Engineering Research and Design, Vol: 74, Pages: 307-320, ISSN: 0263-8762
Maintenance policy optimization is concerned with determining when and to what extent major plant equipment items are to be taken off production for preventive maintenance. This paper considers the problem of determining optimal preventive maintenance policy parameters (e.g. effectiveness, frequency) for different items of equipment in multipurpose plants. Since preventive maintenance activities tend to be infrequent, a long-term view of the operation of the process must be taken. The procedure followed involves the formulation of a long-term combined production/maintenance aggregate planning problem, where the effect of failures on plant profitability are taken into account using the measure of expected resource availability as developed for continuous plants and modifying its use for applicability to the multipurpose mode of production. A variety of ways of formulating the problem as mixed integer non-linear or mixed integer linear programs are explored, and two examples are used to illustrate the ideas developed.
Samsatli NJ, Shah N, 1996, An optimization based design procedure for biochemical processes .2. Detailed scheduling, FOOD AND BIOPRODUCTS PROCESSING, Vol: 74, Pages: 232-242, ISSN: 0960-3085
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- Citations: 14
Samsatli NJ, Shah N, 1996, An optimization based design procedure for biochemical processes .1. Preliminary design and operation, FOOD AND BIOPRODUCTS PROCESSING, Vol: 74, Pages: 221-231, ISSN: 0960-3085
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- Citations: 8
VaklievaBancheva N, Ivanov BB, Shah N, et al., 1996, Heat exchanger network design for multipurpose batch plants, COMPUTERS & CHEMICAL ENGINEERING, Vol: 20, Pages: 989-1001, ISSN: 0098-1354
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- Citations: 43
Dedopoulos IT, Shah N, 1996, Long-term maintenance policy optimization in multipurpose process plants, CHEMICAL ENGINEERING RESEARCH & DESIGN, Vol: 74, Pages: 307-320, ISSN: 0263-8762
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- Citations: 20
Dimitriadis VD, Shah N, Pantelides CC, 1996, Optimal design of hybrid controllers for hybrid process systems, Pages: 244-257, ISSN: 0302-9743
The design of controllers for processing systems has mostly concentrated on the purely continuous and purely discrete cases. However, most chemical processes exhibit hybrid characteristics. This work presents a model-based approach to the controller synthesis problem for hybrid processing systems. A parameterised representation for hybrid controllers is presented that generalises the purely discrete and purely continuous cases. A discrete/continuous mathematical model of the process and the control system is constructed. Then, the mathematical formulations of the control system design and performance verification problems are introduced. The former can be used to design a controller that behaves optimally with respect to a given finite set of disturbance scenarios. The latter, given a controller, determines: worst-case disturbance inputs that render the system infeasible or suboptimal. The two problems are finally combined into a two-stage, iterative design algorithm. A simple example is used to illustrate the potential of the proposed approach.
Samsatli NJ, Shah N, 1996, An optimization based design procedure for biochemical processes part II: Detailed scheduling, Food and Bioproducts Processing: Transactions of the Institution of of Chemical Engineers, Part C, Vol: 74, Pages: 232-242, ISSN: 0960-3085
The first part of this paper presented an overall approach to optimization based design of biochemical processes. The procedure is divided into two stages. In the first stage (described in part I of this paper1), the processing rates and conditions of the unit operations and equipment capacities are determined through dynamic optimization, while simple scheduling considerations are accounted for. The second stage, described here, deals with detailed scheduling and design adjustments, required for an accurate determination of the sequence and timing of the unit operations, using the processing rates from the first stage. A scheduling model is developed to take account of batch integrity. The design procedure is demonstrated using an example of a process common in the biochemical industries.
Realff MJ, Shah N, Pantelides CC, 1996, Simultaneous design, layout and scheduling of pipeless batch plants, Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: 869-883, ISSN: 0098-1354
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- Citations: 39
Samsatli NJ, Shah N, 1996, An optimization based design procedure for biochemical processes part I: Preliminary design and operation, Food and Bioproducts Processing: Transactions of the Institution of of Chemical Engineers, Part C, Vol: 74, Pages: 221-231, ISSN: 0960-3085
A two stage optimization based design procedure for biochemical processes is presented. In the first stage, the processing rates and conditions of the unit operations and equipment capacities are determined through dynamic optimization, while simple scheduling considerations are accounted for. The second stage deals with detailed scheduling and design adjustments, required for an accurate determination of the sequence and timing of the unit operations, using the processing rates from the first stage. A scheduling model is developed to take account of batch integrity and is described in the second part of this paper. The design procedure is demonstrated using an example of a process common in the biochemical industries. The production of an intra-cellular enzyme requires a fermentation stage (or stages) followed by a number of primary separation stages, with high resolution steps for final purification. In this example the process is considered up to and including the primary separation stages only. The process consists of nine stages including four typical unit operations.
Samsatli NJ, Shah N, 1996, Optimal integrated design of biochemical processes, European Symposium on Computer Aided Process Engineering - 6 (ESCAPE-6), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S315-S320, ISSN: 0098-1354
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- Citations: 4
Shah N, Henson R, Izumoto E, et al., 1996, Integrated design of a PVC plant, 1996 IChemE Research Event - 2nd European Conference for Young Researchers in Chemical Engineering, Publisher: INST CHEMICAL ENGINEERS, Pages: 775-777
Samsatli NJ, Shah N, 1996, Integrated bioprocess design, 1996 IChemE Research Event - 2nd European Conference for Young Researchers in Chemical Engineering, Publisher: INST CHEMICAL ENGINEERS, Pages: 118-120
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- Citations: 1
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