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François Maréchal

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Publications associées (437)

Methodology for the optimal design of an integrated first and second generation ethanol production plant combined with power cogeneration

François Maréchal, Rami Bechara, Jean-Marc Schweitzer

The application of methodologies for the optimal design of integrated processes has seen increased interest in literature. This article builds on previous works and applies a systematic methodology to an integrated first and second generation ethanol produ ...

Elsevier2016

Targeting Optimal Design and Operation of Solar Heated Industrial Processes: A MILP Formulation

François Maréchal, Angelos Selviaridis, Anna Sophia Wallerand, Araz Ashouri

The intermittence of solar irradiation displays a great challenge for industrial applications, which often require a constant heat supply. Transient or dynamic simulation software, such as TRNSYS and EnergyPlus, enable modeling of such systems and the resp ...

Elsevier2016

Techno–economic design of hybrid electric vehicles and possibilities of the multi-objective optimization structure

François Maréchal, Zlatina Kirilova Dimitrova

The design criteria for modern sustainable development of vehicle powertrain are the high energy efficiency of the conversion system, the competitive cost and the lowest possible environmental impacts. In this article a multi-objective optimization methodo ...

2016

Biomass Modelling: estimating thermodynamic properties from the elemental composition

François Maréchal, Emanuela Peduzzi, Guillaume Boissonnet

In the context of modelling biomass conversion processes, the accurate representation of biomass, which is a complex and highly variable material, is of crucial importance. This study provides a rather simple and flexible way to represent biomass, especial ...

2016

Methodology for the design and comparison of optimal production configurations of first and first and second generation ethanol with power

François Maréchal, Rami Bechara, Jean-Marc Schweitzer

This article applies a systematic methodology to the optimization and comparison of two sugarcane conversion processes of great potential: the production of first generation ethanol and electricity in an integrated distillery and cogeneration plant (1G+COG ...

2016

Towards optimal design of solar assisted industrial processes: Case study of a dairy

François Maréchal, Régis Voillat, Anna Sophia Wallerand

Pinch analysis is a valuable tool for industrial process integration and optimization. Based on heat cascading and Mixed Integer Linear Programming (MILP) the optimal utility system can be found, includ- ing traditional heat sources (burners, boilers) and ...

University of Ljubljana2016

Model-based optimization of distributed and renewable energy systems in buildings

François Maréchal, Paul Michael Stadler, Araz Ashouri

In order to fully exploit the potential of renewable energy resources (RERs) for building applications, opti- mal design and control of the different energy systems is a compelling challenge to address. This paper presents a two-step multi-objective optimi ...

2016

The information platform energyscope.ch on the energy transition scenarios

Daniel Favrat, François Richard Vuille, François Maréchal, Victor Codina Gironès

Switzerland like many countries plans to undertake an energy transition and the government proposes different paths for 2035 and 2050 to achieve it. However the authors of this paper felt the need for a better information of the public on the energy matter ...

2016

Methodology for streams definition and graphical representation in Total Site Analysis

François Maréchal, Laurent Gabriel Félix Alexandre Stéphane Bungener, Elfie Marie Méchaussie, Greta Martha Van Eetvelde

The current regulatory framework in Europe regarding industrial energy consumption puts emphasis on regular energy assessments and increasing energy efficiency. Among the available strategies to identify energy savings opportunities, Total Site Analysis (T ...

2016

Robust optimization for strategic energy planning

Michel Bierlaire, François Maréchal, Stefano Moret

Long-term planning for energy systems is often based on deterministic economic optimization and forecasts of fuel prices.When fuel price evolution is underestimated, the consequence is a low penetration of renewables and more efficient technologies in favo ...

2016

Intra-day electro-thermal model predictive control for polygeneration systems in microgrids

François Maréchal, Mario Paolone, Ramanunni Parakkal Menon

This paper is framed within the context of intra-day optimal control of polygeneration systems and storage connected to microgrids. In particular, the paper proposes an optimal control strategy that accounts for both electrical and thermal processes taking ...

2016

Safety issues of a CO2-based System in NEST

Luc Girardin, François Maréchal, Samuel Henchoz

This study addresses the safety issue for the realization of a CO2 heat distribution system in the NEST research and innovation building. It is based on consideration around the concept of CO2 network developed at LENI/IPESE-EPFL and takes advantage from t ...

IPSE-EPFL Valais-Wallis2016

Apparatus for salt separation under supercritical water conditions

Daniel Favrat, François Maréchal, Alberto Mian, Adriano Viana Ensinas

Apparatus for salt separation (2) under supercritical water conditions, comprising a heat exchanger (4) and a fluidized bed reactor (6). The fluidized bed reactor comprising a supercritical water pressure containing wall (8) defining therein a fluidized be ...

2016

Environmental, Energetic and Economic Evaluation of Implementing a Supercritical Fluid-Based Nanocellulose Production Process in a Sugarcane Biorefinery

François Maréchal, Juliana Queiroz Albarelli

Nanocellulose, which is a disintegration product of plant cellulose, has recently come to public attention because of its great mechanical properties combined with renewability and biodegradability. From an environmental point-of-view, nanocellulose has sh ...

AIDIC Servizi S.r.l.2016

City Energy Analyst (CEA): Integrated framework for analysis and optimization of building energy systems in neighborhoods and city districts

François Maréchal, Tuong-Van Nguyen, Arno Schlueter

This paper describes the City Energy Analyst (CEA), a computational framework for the analysis and optimization of energy systems in neighborhoods and city districts. The framework allows analyzing the energy, carbon and financial benefits of multiple urba ...

2016

Efficiency Improvement for Vehicle Powertrains Using Energy Integration Techniques

François Maréchal, Zlatina Kirilova Dimitrova

The main design criteria for the modern sustainable development of vehicle powertrains are the high energy efficiency of the conversion system, the competitive cost and the lowest possible environmental impacts. The need for efficiency improvement of the v ...

2016

Methodology for the optimal design of an integrated sugarcane distillery and cogeneration process for ethanol and power production

François Maréchal, Rami Bechara, Jean-Marc Schweitzer

The application of systematic methodologies for the optimal design of integrated processes has seen increased interest in literature, namely for bioprocesses. The development and application of such a methodology to ethanol and power production from sugarc ...

Pergamon-Elsevier Science Ltd2016

Multiperiod Sequential Synthesis of Heat Exchanger Networks and Utility Systems including storages

François Maréchal, Alberto Mian, Emanuele Martelli

This work proposes a sequential approach for the multi-period synthesis of Heat Exchanger Networks (HEN) and Utility Systems of chemical processes and energy systems, including thermal, electric and material storage. The optimization approach is sequential ...

2016

CO2-mitigation options for the offshore oil and gas sector

François Maréchal, Laurence Tock, Tuong-Van Nguyen

The offshore extraction of oil and gas is an energy-intensive process leading to the production of CO2 and methane, discharged into the atmosphere, and of chemicals, rejected into the sea. The taxation of these emissions, in Norway, has encouraged the deve ...

2016

Establishing links for the planning of sustainable districts

François Maréchal, Jessen Page, Sébastien Cajot, Nils Christian Schüler

Cities can play a key role in mitigating climate change impacts, as they represent two thirds of the world’s energy consumption and greenhouse gas emissions. This paper presents a model-based approach to support cities in the challenge of including energy ...

vdf Hochschulverlag AG2016

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