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François Maréchal

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Publications associées (437)

Integration of deep geothermal energy and woody biomass conversion pathways in urban systems

François Maréchal, Léda Gerber, Emanuela Peduzzi, Stefano Moret

Urban systems account for about two-thirds of global primary energy consumption and energy-related greenhouse gas emissions, with a projected increasing trend. Deep geothermal energy and woody biomass can be used for the production of heat, electricity and ...

Elsevier2016

Key Energy and Technological Aspects of Three Innovative Concepts of District Energy Networks

Daniel Favrat, François Maréchal, Samuel Henchoz, Patrick Chatelan

Energy needs in urban areas are heterogeneous by their nature, spatial distribution and temperature level required. Three concepts of district energy networks that could provide the energy services efficiently to a city centre are compared. The focus is on ...

2016

Environomic design of hybrid electric vehicles

François Maréchal, Zlatina Kirilova Dimitrova

The improvement of the efficiency of vehicle energy systems promotes an active search to find innovative solutions during the design process. Engineers can use computer-aided processes to find automatically the best design solutions. This kind of approach ...

University of Ljubljana2016

Optimal Operations and Resilient Investments in Steam Networks

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

Steam is a key energy vector for industrial sites, most commonly used for process heating and cooling, cogeneration of heat and mechanical power as a motive fluid or for stripping. Steam networks are used to carry steam from producers to consumers and betw ...

2016

Distributed model predictive control of energy systems in microgrids

François Maréchal, Paul Michael Stadler, Araz Ashouri

This paper presents a flexible and modular control scheme based on distributed model predictive control (DMPC) to achieve optimal operation of decentralized energy systems in smart grids. The proposed approach is used to coordinate multiple distributed ene ...

IEEE2016

Economical Analysis of a Pressurized Fluid-Based Process Applied for Phytochemicals Recovery in a Sustainable Biorefinery Concept for Brazilian Ginseng Roots

François Maréchal

A growing number of technologies are being developed in order to produce different high added value products, such as phytochemicals, ethanol and other chemicals from biomass, representing an important trend that needs to be evaluated. The use of pressuriz ...

Aidic Servizi Srl2016

Strategic Energy Planning under Uncertainty: a Mixed-Integer Linear Programming Modeling Framework for Large-Scale Energy Systems

Michel Bierlaire, François Maréchal, Stefano Moret

Various countries and communities are defining strategic energy plans driven by concerns related to climate change and security of energy supply. Energy models are needed to support this decision-making process. The long time horizon inherent to strategic ...

Elsevier2016

Strategic energy planning for large-scale energy systems: A modelling framework to aid decision-making

Daniel Favrat, François Maréchal, Victor Codina Gironès, Stefano Moret

Concerns related to climate change and security of energy supply are pushing various countries to make strategic energy planning decisions. This requires the development of energy models to aid decision- making. Large scale energy models are often very com ...

2015

OsmoseLua – An Integrated Approach to Energy Systems Integration with LCIA and GIS

François Maréchal, Min-Jung Yoo, Maziar Kermani, Lindsay Dianne Lessard

In this paper, we present our recent work on the implementation of an Energy Systems Integration platform allowing the modeling of Energy Systems integrating LCI (Life Cycle Inventory), LCIA (Life Cycle Impact Assessment) and GIS (Geographical Information ...

Elsevier2015

A solid thermal storage model for the optimization of buildings operation strategy

François Maréchal, Samira Fazlollahi, Nils Christian Schüler

With an increasing fluctuation of energy supply due to the integration of renewable energy utilities peak- shaving becomes more and more important. Storage systems are a considerable option for this purpose. For the heat supply in cities the buildings them ...

2015

Valorization of sugarcane biorefinery residues using supercritical water gasification: A case study and perspectives

François Maréchal, Alberto Mian, Adriano Viana Ensinas

The present study evaluates the use of supercritical fluid technology, particularly supercritical water gasification (SCWG), to add value to residues from a sugarcane biorefinery that produces first and second generation ethanol. This case study aims at el ...

2015

Thermo-environomic optimisation strategy for fuel decarbonisation process design and analysis

François Maréchal, Laurence Tock

To meet the CO2 reduction targets and ensure sustainable energy supply, the development and deploy- ment of cost-competitive innovative low-carbon energy technologies is essential. To design and evaluate the competitiveness of such complex integrated energ ...

2015

Multi-objective, multi-period optimization of district energy systems: IV – A case study

François Maréchal, Samira Fazlollahi, Araz Ashouri

A multi-objective, multi-period model for optimizing the design and operating strategy of district energy systems is proposed by authors [1]. In the developed model the process and energy integration tech- niques are principally investigated. In the presen ...

2015

Particle Swarm Optimization and Kalman Filtering for Demand Prediction of Commercial Buildings

François Maréchal, Samira Fazlollahi, Araz Ashouri

The integration of weather forecasts and demand prediction into the energy management system of buildings is usually achieved using a model-based predictive control. The performance of such control techniques strongly depends on the accuracy of the thermal ...

2015

Resilient decision making in steam network investments

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

Steam is a key energy vector for industrial sites, used for process heating, direct injection and stripping, tracing and cogeneration of mechanical power. Steam networks transport steam from producers to consumers and across different pressure levels. The ...

The Italian Association of Chemical Engineering2015

Optimisation of unit investment and load shedding in a steam network facing undercapacity

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

Steam networks and their utilities should be dimensioned to satisfy day-to-day demand as well peaks. Peaks can be caused by unit start-ups, extreme weather conditions or combinations of high demand from process units. During maintenance operations or unexp ...

2015

Multi-period analysis of heat integration measures in industrial clusters

François Maréchal, Laurent Gabriel Félix Alexandre Stéphane Bungener, Greta Martha Van Eetvelde, Roman Hackl

TSA (total site analysis) has shown to be an efficient tool for identifying heat integration measures in industrial clusters, leading to the optimal design of utility systems and energy bill reduction. In order to justify investments, any proposed utility ...

2015

Environomic optimal design of power plants with CO2 capture

François Maréchal, Laurence Tock

Life cycle impact assessment indicators are integrated for studying the process integration of renewable resources and CO2 capture and storage (CCS) in power plants. Besides the expected reduction in global warming potential (GWP), CCS induces energy and c ...

2015

Comparative Evaluation of Three Sugarcane Supply Strategies in Colombia: Logistics, Energy and GHG Emissions

François Maréchal, Jairo Alexander Lozano Moreno

Sugarcane-based ethanol in Colombia has a prospective opportunity to explore the production of ethanol from lignocellulosic biomass taking into account that a large amount of generated residues (between 50 and 100 t/ha) are left on the field after green ha ...

2015

Key energy and technological aspects of three innovative concepts of District energy networks

Daniel Favrat, François Maréchal, Samuel Henchoz, Patrick Chatelan

In urban areas, the use of thermal energy services is intensive and relatively heterogeneous by their nature, spatial distribution and temperature level required. In this study three concepts of district energy networks that could provide these services ve ...

2015

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