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Theme 2 : Innovative assisted systems design

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Raphaële THERY HETREUX

Establishing confirmed methods and tools for transfer to industry

- Managing technological innovation implies developing methods and tools to design sustainable processes. Innovative design uses model engineering and knowledge management for instance through collaborative web tools. It uses TRIZ methods or case-based reasoning, or it develops generic methods such as the inverse formulation of products and of processes and combined pinch and exerg analysis. It accelerates the development of new products and processes and deals with recycling issues.


ITSolver - Collaborative tool for assistance in computer-aided design

Energy efficiency of industrial sites: towards integrated management of energy and production

- Over the last seven years the PSE department has concentrated its efforts on the application of generic methods to optimizing the energy efficiency of industrial sites and to developing the associated computer aided tools. These methods concern the analysis of a system during the phases of its design and steady improvement as well as the retrofit operation of a unit that is already running. Among the studies carried out, let us mention the contribution to the development of a software tool for the optimization of process exergy (1), but also the development of an approach devoted to running industrial systems based on the conjoint management of production and of energy


Towards a combined approach “Exergy analysis, Pinch analysis”

- Exergy analysis is a high-performance approach to evaluate inefficiency in a system and point the engineer towards technological solutions to reach better energy efficiency. It is however difficult to get exergy analysis adopted by industry through lack of software tools for its implementation. Aiming to make up for this deficiency, our studies (PhD: Ali Ghannadzadeh 2012 – ANR COOPERE2, 2012-2015 – PhD: Stéphane Gourmelon, 2015) have contributed to developing a generic methodology for exergy analysis and to implementing it in a commercial tool (ProSimPlus®). The studies consisted of proposing a generic formulation for the calculation of the exergy of mass transport, formalizing the systematic calculation of exergy balances in the ProSimPlus® process simulator and implementing a generic method for the calculation of the exergy efficiency of a simple unit operation or of a whole process
- For running a whole plant, studies aiming to manage production and energy all together have been undertaken (PhD: Mujtaba Agha, 2009) both for continuous processes organized in campaigns and for batch processes. Unlike continuous processes operating in a steady state regime, the energy consumption and the “hot” and “cold” currents are not stable in time. The problem is then to establish a sequence of production tasks compatible with all the limitations of an industrial site: manufacturing “recipe”, capacity of the utilities pool and potential for energy transfer between heat sources and sinks. The methodology implemented leads firstly to defining the framework for modeling these issues (Extended Resource Task Network framework) and secondly to implementing the model of mixed linear programming which allows it to be resolved.
- This methodology is oriented towards the in-built mass-energy management of the processes. It has opened the way to studies aiming to extend pinch analysis to industrial processes operating semi-continuously (ADEME project PIVICI, 2011-2013).
- Overall, the studies carried out during the last four years have laid the basis for a
methodology devoted to the diagnosis and optimization of energy in industrial sites
relying on intelligently linking pinch technology and exergy analysis.


Grassmann Diagram, a useful tool for the exergy analysis of processes