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François Maréchal

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Publications associées (437)

Triple-Mode Grid-Balancing Plants via Biomass Gasification and Reversible Solid-Oxide Cell Stack: Economic Feasibility Evaluation via Plant Capital-Cost Target

Jan Van Herle, François Maréchal, Maria del Mar Perez Fortes, Ligang Wang

Electricity production and consumption must be balanced for the electrical grid. However, the rapidly growing intermittent power sources are now challenging the supply-demand balance, leading to large flexibility needs for grid management. The plant integr ...

FRONTIERS MEDIA SA2021

Techno-economic comparison of 100% renewable urea production processes

Jan Van Herle, François Maréchal

Urea is widely used in agriculture, industry, and food, while it is also a potential fuel. Large-scale urea production relies on fossil fuels, thus there is a strong need for green urea given the increasing penetration of renewable energy sources. A potent ...

2021

An analysis of the impacts of green mobility strategies and technologies on different European energy system

François Maréchal, Tuong-Van Nguyen, Jonas Schnidrig

A successful decarbonization of the European Union, coupled with a high integration of renewable energy and ambitious targets for energy efficiency, can only be reached with a significant contribution from transport. This sector currently represents a quar ...

2021

A modelling framework for assessing the impact of green mobility technologies on energy systems

François Maréchal, Tuong-Van Nguyen, Jonas Schnidrig, Xiang Li

A successful decarbonisation of the European Union, coupled with a high integration of renewable energy and ambitious targets for energy efficiency, can only be reached with a significant contribution from the transporta- tion sector. It currently represen ...

2021

Data reduction for mixed integer linear programming in complex energy systems

Luc Girardin, François Maréchal, Luise Middelhauve, Natalija Ljubic, Julia Granacher

The task of optimally designing and scheduling energy systems with a high share of renewable energies is complex and computationally demanding. A widespread method for tackling this task is to apply mixed integer linear programming (MILP). Even though the ...

2021

Appendix - A modelling framework for assessing the impact of green mobility technologies on energy systems

François Maréchal, Tuong-Van Nguyen, Jonas Schnidrig, Xiang Li

2021

Increasing Superstructure Optimization Capacity Through Self-Learning Surrogate Models

François Maréchal, Ivan Daniel Kantor, Julia Granacher

Simulation-based optimization models are widely applied to find optimal operating conditions of processes. Often, computational challenges arise from model complexity, making the generation of reliable design solutions difficult. We propose an algorithm fo ...

2021

Potential of Photovoltaic Panels on Building Envelopes for Decentralized District Energy Systems

Luc Girardin, François Maréchal, Luise Middelhauve, Francesco Baldi

The expected increase of the penetration of distributed renewable energy technologies into the electricity grid is expected to lead to major challenges. As a main stakeholder, authorities often lack the appropriate tools to frame and encourage the transiti ...

2021

Decision support for strategic energy planning: A robust optimization framework

Michel Bierlaire, François Maréchal, Frédéric Louis François Babonneau, Stefano Moret

Optimization models for long-term energy planning often feature many uncertain inputs, which can be handled using robust optimization. However, uncertainty is seldom accounted for in the energy planning practice, and robust optimization applications in thi ...

ELSEVIER2020

System Design and Performance Evaluation of Wastewater Treatment Plants Coupled With Hydrothermal Liquefaction and Gasification

François Maréchal, Theodoros Damartzis, Rafael Amorim Leandro De Castro Amoedo, Julia Granacher

Wastewater treatment and sludge disposal are responsible for considerable costs and emissions in a global scale. With population and urbanization growing, tackling the rational and efficient use of energy while fulfilling the desired effluent standards are ...

2020

Life cycle assessment integration into energy system models: An application for Power-to-Methane in the EU

François Maréchal, Victor Codina Gironès, Alexis Laurent

As the EU energy system transitions to low carbon, the technology choices should consider a broader set of criteria. The use of Life Cycle Assessment (LCA) prevents burden shift across life cycle stages or impact categories, while the use of Energy System ...

2020

Optimal integration of sustainable multi-energy systems in districts

François Maréchal, Paul Michael Stadler

The integration of renewable energy sources within the built environment is a compelling challenge to tackle. With the recent climate targets aiming at a carbon neutral energy supply by the mid-century, a modern building energy system (BES) should maximize ...

ECOS 2020 Organizing Committee2020

System for co2 capture from internal combustion engine

François Maréchal, Shivom Sharma

System (2) for CO2 capture from a combustion engine (1) comprising an exhaust gas flow circuit (6) having an inlet end fluidly connected to an exhaust of the combustion engine, a heat exchanger circuit (12), a primary exhaust gas heat exchanger (H1) for tr ...

2020

Key Performance Indicators for Decision Making in Building Energy Systems

Luc Girardin, François Maréchal, Alessio Santecchia, Luise Middelhauve

Policy makers and energy operator have the responsibility to select indicators for their mission to lead the renewable energy transition ensuring energy independence and security of supply in the context of decarbonisation of the energy mix and and/or nucl ...

2020

Optimization based approach to assist the transition of large energy users to low temperature networks

François Maréchal, Jessen Page, Alberto Mian, Francesca Belfiore

Distric Energy System (DES) represents a promising opportunity to improve energy efficiency and boost the decarbonization of the European energy sector. If most of the studies focus on small consumers typically located within urban areas, large energy user ...

Curran Associates, Inc.2020

Investment Planning Methodology for Complex Urban Energy Systems Applied to a Hospital Site

Luc Girardin, François Maréchal, Bastien Maxence Bornand, Jean-Loup Sylvain Robineau, Francesca Belfiore

Industrial process integration based on mixed integer linear programming has been used for decades to design and improve industrial processes. The technique has later been extended to solve multi-period and multi-scale problems for the design of urban ener ...

2020

Overcapacity in European power systems: Analysis and robust optimization approach

Michel Bierlaire, François Maréchal, Frédéric Louis François Babonneau, Stefano Moret

The planning of national power systems is traditionally based on long-term forecasts of electricity demand and fuel prices. However, over such long time horizons (20-50 years), these forecasts often prove to be inaccurate. As an example, wrong projections ...

ELSEVIER SCI LTD2020

Predicting thermodynamic performance of biomass gasification plants by applying surrogate models

François Maréchal, Maziar Kermani, Ayse Dilan Celebi, Julia Granacher

Surplus electricity production is anticipated to further increase during summer periods due to the inevitable high penetration of renewable energy sources in our energy system. Potential solutions for sustainable and efficient energy storage need to be exp ...

2020

Techno-economic evaluation of biomass-to-fuels with solid-oxide electrolyzer

Jan Van Herle, François Maréchal, Ligang Wang, Hanfei Zhang

Thermochemical biomass-to-fuel conversion requires an increased hydrogen concentration in the syngas derived from gasification, which is currently achieved by water–gas-shift reaction and CO2 removal. State-of-the-art biomass-to-fuels convert less than hal ...

2020

A Mixed-Integer Linear Programming Formulation for Optimizing Multi-Scale Material and Energy Integration

François Maréchal, Hür Ebuzer Bütün, Jean-Loup Sylvain Robineau, Ivan Daniel Kantor

This research presents a mathematical formulation for optimizing integration of complex industrial systems from the level of unit operations to processes, entire plants, and finally to considering industrial symbiosis opportunities between plants. The fram ...

2020

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