Infoscience
(66.951 recursos)
Repository of the publications, research reports, PhD Theses, Ms Theses, semester works, lectures, etc., of the Facultés, Laboratories and Researchers at the EPFL.
18.
A New Pulsed Multipoint Injection System to Reduce Natural Gas Vehicle Emissions. - Germano, Sébastien; Favrat, Daniel; Nicollerat, Marc
Nowadays, most of the natural gas conversion systems available on the market for bifuel vehicles are based on the venturi principle or on the continuous injection principle for the carburation of the engine. Even if the driveability of these systems is satisfactory, their emission performance does often not reflect the full environmental potential offered by natural gas. This is mainly due to the low response of these systems to transient conditions. During the past years, EPFL has been involved in a co-operative program with the industry to develop a new natural gas injection system intended for multipoint sequenced and phased...
19.
Exergy and Environmental Considerations in Process Integration - Favrat, Daniel; Staine, Frederic
Exergetic analysis is derived from the First and Second Laws of thermodynamics is shown to be an excellent tool to analyse and characterize industrial processes. A coherent link to pinch technology is shown which allows the designer to extend design considerations to friction and equipment fabrication losses. Paths to extend the approach to other environmental factors are also indicated. Applications examples linked to Organic Rankine cycles, plaster drying or distillation of chemical products are briefly addressed. New perspectives opened by the so-called environomic optimization approach using recent progress in genetic algorithms are also briefly cited together with results from a...
20.
Thermoeconomic and environomic modeling and optimization of energy systems. - Favrat, Daniel
The increasing concern for the environmental impact of human activities stimulates the development of new methods for the analysis and design of industrial processes including energy systems. It is generally admitted that the considerations of environmental and other life cycle factors as early as possible in the design can contribute to a reduction of overall costs, favoring a cost effective evaluation of trade-offs between internal process improvements and post-treatments of effluents. For energy systems with significant time dependence of the major input and output parameters additional important questions for the designer are where and when to invest, in particular when...
1.
