Publications associées à Energy quality

Exergy assessment and techno-economic optimization of bioethanol production routes

Currently, electricity generation and second-generation ethanol production from lignocellulosic feedstocks represent technological alternatives in the bioenergy sector. Nevertheless, the introduction of new production processes denotes a real challenge due ...

2020

Energy and Exergy Analysis of a Cruise Ship

Tuong-Van Nguyen, Francesco Baldi, Karin Andersson

In recent years, the International Maritime Organization agreed on aiming to reduce shipping’s greenhouse gas emissions by 50% with respect to 2009 levels. Meanwhile, cruise ship tourism is growing at a fast pace, making the challenge of achieving this goa ...

2018

Contribution of Model Predictive Control in the Integration of Renewable Energy Sources within the Built Environment

François Maréchal, Paul Michael Stadler, Luc Girardin, Araz Ashouri

Integrating intermittent renewable energy sources has renders the power network operator task of balancing electricity generation and consumption increasingly challenging. Aside from heavily investing in additional storage capacities, an interesting soluti ...

2018

Exergy assessment of future energy transition scenarios with application to Switzerland

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

Using an exergy based indicator is highly desirable to compare future national energy strategies. A new web- based information platform called energyscope.ch, informing the general public on the Swiss energy transition was presented at ECOS2016. This paper ...

2017

Combined Exergy Analysis and Energy Integration for the Optimization of Nitrogen Fertilizer Plants

François Maréchal, Daniel Alexander Florez Orrego, Shivom Sharma

Modern ammonia production plants are equipped with efficient energy integration networks able to recover an important fraction of the enthalpy of reaction released by the exothermic chemical systems. However, to fully supply the exergy demands of the highl ...

University of San Diego2017

Thermodynamics and the optimisation of energy systems: Strengths and Limits

Daniel Favrat

The Second Law of thermodynamics is known to be an essential guide for the improvement of energy conversion systems. Throughout the years it has been applied to various engineering methods in particular in methods based on exergy [1] including the 2nd Law, ...

2013

Novel concepts of compressed air energy storage and thermo-electric energy storage

Young Min Kim

The interest in energy storage is currently increasing, especially from the perspectives of matching intermittent sources of renewable energy with customer demand and storing excess nuclear or thermal power during the daily cycle. Technologies to be consid ...

EPFL2012

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

Energy and exergy analysis of a micro-compressed air energy storage and air cycle heating and cooling system

Daniel Favrat, Young Min Kim

Energy storage systems are becoming more important for load leveling, especially for widespread use of intermittent renewable energy. Compressed air energy storage (CAES) is a promising method for energy storage, but large scale CAES is dependent on suitab ...

2010

Web-based tools for energy management in large companies applied to food industry

Damien Muller

This thesis presents a methodology for energy management in large companies and its implementation through a web application and through a prototype of a simulation platform. By combining existing tools in an innovative manner and by making use of recent w ...

EPFL2007

An Energy-Flow Based Methodology - Application to hybrid vehicles

Alfred Rufer, Philippe Barrade

A new methodology is presented, based on energy-flow analysis on systems. The aim is to obtain a representation of energy flows between the various sources of a complex system, via energy storage devices connected together with electrical and mechanical co ...

2006