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François Maréchal

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Related publications (437)

Defining the potential of usable waste heat in industrial processes with the help of pinch and exergy analysis

Daniel Favrat, François Maréchal, Matthias Bendig

This paper aims at giving a definition for waste heat in analogy to the definitions of natural resources and reserves. It aims also at presenting a method for identifying, characterizing and quantifying the available waste heat of an industrial system that ...

Czech Society of Chemical Engineering and Italian Association of Chemical Engineering2012

CO2 mitigation in thermo-chemical hydrogen processes: Thermo-environomic comparison and optimization

François Maréchal, Laurence Tock

A systematic comparison and optimization of thermo-chemical hydrogen production processes with CO2 capture is performed. The process options include the resource type, the syngas production method and the hydrogen purification technology, including CO2 sep ...

2012

H2 processes with CO2 mitigation: Thermo-economic modeling and process integration

François Maréchal, Laurence Tock

Within the challenge of greenhouse gas reduction, hydrogen is regarded as a promising decarbonized energy vector. The hydrogen production by natural gas reforming and lignocellulosic biomass gasification are systematically analyzed by developing thermo-eco ...

2012

Multi-objective investment and operating optimization of energy systems with integer cut constraints and evolutionary algorithm

François Maréchal, Samira Fazlollahi

The design and operating of energy systems are key issues for matching the energy supply and consumption. Several optimization methods based on the Mixed Integer Linear Programming (MILP) have been developed for this purpose. However, due to the uncertaint ...

2011

Heat pump integration in a cheese factory

François Maréchal, Helen Carla Becker

The aim of this work is to increase the efficiency of industrial processes by using pinch analysis and process design methods. The main goals are the reduction of energy consumption, of the corresponding operating costs and of CO2 emissions. In this contex ...

Aidic Servizi Srl, Via Giuseppe Colombo 81/A, Milano, Mi 20133, Italy2011

A systematic methodology for the synthesis of unit process chains using Life Cycle Assessment and Industrial Ecology Principles

François Maréchal, Léda Gerber, Jérôme Mayer

The integration of environmental impacts in the conceptual process design procedure can be achieved by combining Life Cycle Assessment (LCA) tools with flowsheeting software and process integration techniques. However, current LCI databases assume a given ...

Elsevier Science, Reg Sales Off, Customer Support Dept, 655 Ave Of The Americas, New York, Ny 10010 Usa2011

Defining Optimal Configurations of Geothermal Systems Using Process Design and Process Integration Techniques

François Maréchal, Léda Gerber

The use of geothermal resources for the polygeneration of energy services has recently gained interest and is expected to know an important development in the future. Major research questions concern the increase of the efficiency in the usage of geotherma ...

Aidic Servizi Srl, Via Giuseppe Colombo 81/A, Milano, Mi 20133, Italy2011

Process integration and opportunities for heat pumps in industrial processes

François Maréchal, Helen Carla Becker

Process integration methods allow one optimizing industrial processes. The main goals are decreasing energy demand and operating costs as well as reducing pollutants emissions. High fuel costs promote installations of heat pumps. In a heat pump, process wa ...

2011

From science to application in Geneva: best practice example from theoretical concept on exergy over a law into everyday life of a citizen

François Maréchal, Jakob Moritz Fabian Rager

With the change of energy regulations in the Geneva canton, exergy and exergy system efficiency entered into everyday life. Exergy is defined as the potential of maximum work which can ideally be obtained from each energy unit. This analysis allows coheren ...

2011

Hybrid Cycle SOFC - Inverted Gas Turbine with CO2 Separation

Daniel Favrat, François Maréchal, Emanuele Facchinetti

A new gas turbine-fuel cell Hybrid Cycle is proposed. The fuel cell advantageously operates close or under atmospheric pressure and is fully integrated with the gas turbine that is based on an Inverted Brayton-Joule Cycle. The idea of the invention is to c ...

2011

Base case process development for energy efficiency improvement, application to a Kraft pulping mill. Part II: Benchmarking analysis

François Maréchal

A new procedure for benchmarking analysis has been developed to evaluate the energy efficiency of a chemical process. Benchmarking is performed to identify process inefficiencies before developing energy enhancement measures. The new procedure combines typ ...

2011

Co-production of Hydrogen and Electricity from Lignocellulosic Biomass: Process Design and Thermo-economic Optimization

François Maréchal, Laurence Tock

The thermochemical production of hydrogen from lignocellulosic biomass is systematically analyzed by developing environomic models combining thermodynamics with economic analysis, process integration techniques and optimization strategies for the conceptua ...

Pergamon-Elsevier Science Ltd2011

Systematic integration of LCA in process systems design: Application to combined fuel and electricity production from lignocellulosic biomass

Martin Gassner, François Maréchal, Léda Gerber

This paper presents a methodology to integrate life cycle assessment (LCA)in thermo-economic models used for the optimal conceptual design of energy conversion systems. It is illustrated by an application to a thermo-economic model developed for the multi- ...

Elsevier2011

Optimal process design for the polygeneration of SNG, power and heat by hydrothermal gasification of waste biomass: Process optimisation for selected substrates

Martin Gassner, François Maréchal, Georges Heyen, Frédéric Vogel

Based on a previously developed thermo-economic process model, this paper presents a detailed design study for the polygeneration of Synthetic Natural Gas (SNG), power and heat by catalytic hydrothermal gasification of biomass and biomass wastes in supercr ...

Royal Society of Chemistry2011

A Multi-Objective Optimization Method to integrate Heat Pumps in Industrial Processes

François Maréchal, Helen Carla Becker, Giulia Spinato

Aim of process integration methods is to increase the efficiency of industrial processes by using pinch analysis combined with process design methods. In this context, appropriate integrated utilities offer promising opportunities to reduce energy consumpt ...

Elsevier Science, Reg Sales Off, Customer Support Dept, 655 Ave Of The Americas, New York, Ny 10010 Usa2011

EnerGis: A geographical information based system for the evaluation of integrated energy conversion systems in urban areas

Daniel Favrat, Luc Girardin, François Maréchal, Matthias Dubuis, Nicole Calame

2010

Energy integration of industrial sites with heat exchange restrictions

Luc Girardin, François Maréchal, Helen Carla Becker

Elsevier2010

Impact analysis of carbon tax on the renewal planning of energy supply system for an office building

Daniel Favrat, François Maréchal

2010

Utility Optimization in a Brewery Process Based on Energy Integration Methodology

François Maréchal, Helen Carla Becker, Monika Dumbliauskaite

This paper presents a methodology aimed at improving the energy efficiency of a brewery applying process integration techniques. The different steps of the analysis are presented. The first step is the identification of the process energy requirements and ...

2010

Solar Potential Assessment on Roofs of Urban Areas and its Integration

Luc Girardin, François Maréchal, Jakob Moritz Fabian Rager

This article integrates solar potential in a given urban area for the competing technologies of Photovoltaic and thermal collectors. On an urban level, scalable from several buildings to whole cities, the authors examine the possibility of solar power inte ...

2010

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