Publications
240 results found
Sanchez A, Gollain C, Macchietto S, 1999, Rapid development of structured simulation models for the verification of discrete-event control systems, 5th IFAC Symposium on Dynamics and Control of Process Systems (DYCOPS 5), Publisher: PERGAMON PRESS LTD, Pages: 625-630
Liu ZH, Macchietto S, 1999, An advanced operations support system for a batch pilot plant, 5th IFAC Symposium on Dynamics and Control of Process Systems (DYCOPS 5), Publisher: PERGAMON PRESS LTD, Pages: 595-600
Lionis V, Rotstein GE, Macchietto S, 1998, Generic production costing model for multipurpose batch processes, International Journal of Flexible Automation and Integrated Manufacturing, Vol: 6, Pages: 111-144, ISSN: 1064-6345
This paper proposes a production-costing model for batch processes based on information obtainable from an online management execution system. The cost model relies upon the activity-based costing (ABC) rationale that takes full advantage of detailed plant model definitions and up-to-the-minute scheduling database from a management execution system. The model provides a management support tool that assists production and planning decisions by (a) making financial information accessible to factory floor supervision, and (b) promoting communication of process data upward to management and accounting levels of the organization. Emphasis is given to questions of particular significance in processing environments, such as resource utilization efficiency and scope for establishing a consistent quantitative approach to assess the cost-saving potential of a plant. In particular, this study addresses the above issues by proposing a new method for representing opportunity costs. Applicability of the proposed cost model in modern business environments is explored through critical comparison with other cost estimation models. A case study demonstrates how such a costing system could be made available online to support business and operations decision making.
Georgiadis MC, Rotstein GE, Macchietto S, 1998, Optimal design and operation of heat exchangers under milk fouling, AICHE JOURNAL, Vol: 44, Pages: 2099-2111, ISSN: 0001-1541
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- Citations: 37
Mujtaba IM, Macchietto S, 1998, Holdup issues in batch distillation-binary mixtures, CHEMICAL ENGINEERING SCIENCE, Vol: 53, Pages: 2519-2530, ISSN: 0009-2509
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- Citations: 17
Georgiadis MC, Rotstein GE, Macchietto S, 1998, Modeling and simulation of shell and tube heat exchangers under milk fouling, AICHE JOURNAL, Vol: 44, Pages: 959-971, ISSN: 0001-1541
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- Citations: 38
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
Georgiadis MC, Rotstein GE, Macchietto S, 1998, Modelling and simulation of complex plate heat exchanger arrangements under milk fouling, European Symposium on Computer Aided Process Engineering (ESCAPE 8), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S331-S338, ISSN: 0098-1354
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- Citations: 39
Georgiadis MC, Rotstein GE, Macchietto S, 1997, Optimal layout design in multipurpose batch plants, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, Vol: 36, Pages: 4852-4863, ISSN: 0888-5885
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- Citations: 31
Mujtaba IM, Macchietto S, 1997, Efficient optimization of batch distillation with chemical reaction using polynomial curve fitting techniques, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, Vol: 36, Pages: 2287-2295, ISSN: 0888-5885
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- Citations: 54
Georgiadis MC, Macchietto S, 1997, Layout of process plants: A novel approach, Computers and Chemical Engineering, Vol: 21, ISSN: 0098-1354
Plant layout is concerned with the spatial arrangement of processing equipment, storage vessels and their interconnecting pipework. This is an important aspect in the design of chemical and process plants since a good layout will ensure that the plant functions correctly and will provide an economically acceptable balance between the many, often conflicting, design constraints. These constraints are derived from safety, environmental, construction, maintenance and operational considerations. Process relationships, for example the use of gravity flow, and issues such as the provision of space for future expansion must also be taken into account. Traditional methods for locating equipment within chemical plants are based on mixtures of process heuristic rules and exact-to-the-inch distance information. Such techniques are unsystematic and they do not make use of all the relevant and appropriate data. In this paper an optimization based approach is used to determine a good preliminary plant layout, subject to all of the above constraints. A novel mathematical formulation is presented which addresses the problem of locating items of equipment within a given two or three dimensional space. The objective function to be minimized is the sum of the relevant operation, connection and floor construction costs. Detailed cost factors are used to account for the flow direction between two connected units. The problem is formulated as a mixed integer linear programming problem. Specific attention is paid to constructing a formulation which is suitable for the solution of large scale problems. The method presents the rigorous solution of problems with around 30 process equipment and of essentially unlimited size problems when combined with single heuristic rules. The approach is demonstrated with several practical scale problems, including an industrial multi-purpose plant.
Georgiadis MC, Macchietto S, 1997, Layout of process plants: A novel approach, 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: S337-S342, ISSN: 0098-1354
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- Citations: 25
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
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
Xia QS, Macchietto S, 1997, Design and synthesis of batch plants MINLP solution based on a stochastic method, 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: S697-S702, ISSN: 0098-1354
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- Citations: 19
Georgiadis MC, Rotstein GE, Macchietto S, 1997, Layout and streaming optimisation in multipurpose plants, Symposium on 1997 Jubilee Research Event, Publisher: INST CHEMICAL ENGINEERS, Pages: 745-748
Barolo M, Guarise GB, Rienzi SA, et al., 1996, Running batch distillation in a column with a middle vessel, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, Vol: 35, Pages: 4612-4618, ISSN: 0888-5885
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- Citations: 37
Mujtaba IM, Macchietto S, 1996, Simultaneous optimization of design and operation of multicomponent batch distillation column - Single and multiple separation duties, JOURNAL OF PROCESS CONTROL, Vol: 6, Pages: 27-36, ISSN: 0959-1524
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- Citations: 47
Alsop N, Sanchez A, Macchietto S, 1996, Modular procedural control of chemical processes, Pages: 722-727, ISSN: 0537-9989
Procedural control is a formalism recently introduced to address discrete aspects of chemical process control and to facilitate the automatic generation of sequential control code. Procedural Control Theory (PCT) encompasses chemical process modelling, specification, controller synthesis and analysis. In particular, techniques have been presented for designing sequential controllers for chemical systems which are guaranteed to generate a behaviour which conforms to a functional specification and terminates in a desired process state (non blocking). Until now, the techniques within PCT have been limited to simple chemical systems modelled by no more than a few thousand states and for which the specifications are relatively straightforward [6]. The aim of this work is to apply the same techniques to a broader category of control problems in chemical batch processing, for which the size of the state models may be many orders of magnitude greater, and the specifications quite complex. In this work, size complexity is addressed using reduced models of the process which are easily calculable within the modular approach for process modelling in PCT. A complementary method for handling specification complexity is addressed by borrowing from AI the concept of subgoals. Both decomposition techniques serve to modularize the controller synthesis problem.
Macchietto S, 1996, Process simulators for training, MEASUREMENT & CONTROL, Vol: 28, Pages: 293-293, ISSN: 0020-2940
Macchietto S, Kassianides S, 1996, Computer based training of process plant operators, MEASUREMENT & CONTROL, Vol: 28, Pages: 298-303, ISSN: 0020-2940
Sorensen E, Macchietto S, Stuart G, et al., 1996, Optimal control and on-line operation of reactive batch distillation, Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: 1491-1498, ISSN: 0098-1354
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- Citations: 35
Barolo M, Guarise GB, Ribon N, et al., 1996, Some issues in the design and operation of a batch distillation column with a middle vessel, European Symposium on Computer Aided Process Engineering - 6 (ESCAPE-6), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S37-S42, ISSN: 0098-1354
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- Citations: 25
Alsop N, Camillocci LS, Sanchez A, et al., 1996, Synthesis of procedural controllers - Application to a batch pilot plant, European Symposium on Computer Aided Process Engineering - 6 (ESCAPE-6), Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: S1481-S1486, ISSN: 0098-1354
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- Citations: 4
Nicolas G, Rotstein GE, BarbosaPovoa APFD, et al., 1996, A branch and bound procedure for the design of multipurpose batch plants with uncertain demands, COMPUTERS & CHEMICAL ENGINEERING, Vol: 20, Pages: S1179-S1184, ISSN: 0098-1354
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- Citations: 3
Liu ZH, Macchietto S, 1995, Model based control of a multipurpose batch reactor - an experimental study, Computers & Chemical Engineering, Vol: 19, Pages: 477-482, ISSN: 0098-1354
Watsont S, Joulia X, Macchietto S, et al., 1995, Azeotropic batch distillation new problems and some solutions, Computers & Chemical Engineering, Vol: 19, Pages: 589-596, ISSN: 0098-1354
Sanchez A, Macchietto S, 1995, Design of procedural controllers for chemical processes, Computers & Chemical Engineering, Vol: 19, Pages: 381-386, ISSN: 0098-1354
Liu ZH, Macchietto S, 1995, Partitioning-space approach for nonlinear process control, 4th IFAC Symposium on Dynamics and Control of Chemical Reactors, Distillation Columns and Batch Processes (DYCORD(plus) 95), Publisher: PERGAMON PRESS LTD, Pages: 451-456
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- Citations: 1
Alsop N, Camillocci LS, Macchietto S, 1995, Automated synthesis of procedural control code, Advances in Process Control 4 Symposium, Publisher: INST CHEMICAL ENGINEERS, Pages: 49-56
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