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Multi-objective optimization for the Eco-Design of energy systems: Application to Hydrogen technologies.

Technological challenge: Energy efficiency for smart buildings, electrical mobility and industrial processes (learn more)

Department: Département Thermique Conversion et Hydrogène (LITEN)

Laboratory: Laboratoire des systèmes énergétiques pour les territoires

Start Date: 01-10-2022

Location: Grenoble

CEA Code: SL-DRT-22-0694

Contact: florent.montignac@cea.fr

The subject falls within the context of the optimization of the sizing and management of energy systems. The PERSEE optimization tool developed at CEA, applied to many projects, is based on a MILP (Mixed-integer linear programming) formalism and on an economic objective function. However, other dimensions such as environmental impacts, the scarcity of raw materials, recyclability, etc. are increasingly appearing in the concerns of decision-makers in general. On this basis, the objective of the thesis is to develop a multi-objective optimization approach applicable to the MILP formalism, by incorporating environmental criteria, and potentially any type of criterion that can be defined by a decision-maker. The stake of the thesis is to reach a reliable and efficient approach in terms of computation time. In a recent thesis in the laboratory (Hemant SHARMA, 2021) a work has been carried out about the integration of environmental impacts in the optimization for the design of energy systems. Based on these developments, the first task of the thesis will be to see how the methodologies of reduction of environmental impacts can be coupled with the PERSEE approach. In support of a methodological state of the art, it will then be a question of defining a more global approach to take into account multiple criteria and objectives. This global vision may lead to reconsider the way in which optimization is currently carried out in the software. Finally, a concrete application framework will be proposed. One possibility will be to consider the case of an island territory via the European Green Hysland project (EU project 2021-2025) which relates to the deployment of a hydrogen infrastructure on the island of Mallorca (multi-application project: gas network injection , mobility, stationary applications). Other case studies may be considered depending on the available data.

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