Publications associées à Diesel cycle

An Integrated Approach to Designing Robust Turbocompressors on Gas Bearings Through Surrogate Modeling and Constrained Multi-Objective Optimization

Jürg Alexander Schiffmann, Soheyl Massoudi, Cyril Picard

Designing turbocompressors is a complex and challenging task, as it involves balancing conflicting objectives such as efficiency, stability, and robustness against manufacturing deviations. This paper proposes an integrated design methodology for turbocomp ...

2023

Electrochemical techniques for photoelectrode characterisation

Isaac Thomas Holmes-Gentle, Franky Esteban Bedoya Lora

Photoelectrodes enable simultaneous light absorption and catalysis of water splitting reactions. Their performance is established using electrochemical characterisation methods. Besides basic characterisation techniques such as voltammetry and chronoampero ...

ELSEVIER2021

Model-based economic analysis of electrification in railway - Understanding the impact of track, operations, and uncertainties

Michel Bierlaire, Nikola Obrenovic, Florian Mueller

This paper presents results on the impact of different tracks on the economic viability of track electrification for regional railway. Since regional railway still heavily relies on pollutive diesel propulsion systems, track electrification can be key to r ...

2019

Multi-objective optimization of turbo-ORC systems for waste heat recovery on passenger car engines

Jürg Alexander Schiffmann, Eliott Philippe Guenat, Violette Mounier, Kévin Rosset

Waste heat recovery from passenger car internal combustion engines by means of an organic Rankine cycle (ORC) system is promising for reducing CO2 emissions. In this study, different cycle configurations capable of converting waste heat from both coolant a ...

2018

Data-Driven Pre-Design Tool for Small Scale Centrifugal Compressors in Refrigeration

Jürg Alexander Schiffmann, Cyril Picard, Violette Mounier

Domestic scale heat pumps and air conditioners are mainly driven by volumetric compressors. Yet the use of reduced scale centrifugal compressors is reconsidered due to their high efficiency and power density. Recent work has demonstrated the technical feas ...

2018

Heat Pump driven by a Small-Scale Oil-Free Turbocompressor – System Design and Simulation

Jürg Alexander Schiffmann, Adeel Javed

Small-scale oil-free turbocompressors driven by high-speed electric motors and supported on refrigerant vapor bearings represent a promising technology to increase the performance of domestic heat pumps. Gas bearings enable high rotational speeds with low ...

2017

Modeling and Experimental Investigation of an Oil-Free Microcompressor-Turbine Unit for an Organic Rankine Cycle Driven Heat Pump

Jürg Alexander Schiffmann, Jonathan Demierre, Antonio Rubino

Domestic heating and cooling will more and more have to rely on heat pumps (HPs) in order to support a more rational use of primary energy consumption. The HP market is mainly dominated by electrically driven vapor compression cycles and by thermally drive ...

American Society of Mechanical Engineers2015

Global Ill-Posedness of the Isentropic System of Gas Dynamics

Elisabetta Chiodaroli, Camillo De Lellis

We consider the isentropic compressible Euler system in 2 space dimensions with pressure law p () = (2) and we show the existence of classical Riemann data, i.e. pure jump discontinuities across a line, for which there are infinitely many admissible bounde ...

Wiley-Blackwell2015

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Diesel cycle

An Integrated Approach to Designing Robust Turbocompressors on Gas Bearings Through Surrogate Modeling and Constrained Multi-Objective Optimization

Year-long variability of polycyclic aromatic hydrocarbons (PAHs) and their contribution on winter intense pollution events in the urban environment of Athens, Greece

Electrochemical techniques for photoelectrode characterisation

EPFL's District Heating Heat Pump - Performance Analysis for DIfferent Working Fluids

Model-based economic analysis of electrification in railway - Understanding the impact of track, operations, and uncertainties

Multi-objective optimization of turbo-ORC systems for waste heat recovery on passenger car engines

Data-Driven Pre-Design Tool for Small Scale Centrifugal Compressors in Refrigeration

Heat Pump driven by a Small-Scale Oil-Free Turbocompressor – System Design and Simulation

Modeling and Experimental Investigation of an Oil-Free Microcompressor-Turbine Unit for an Organic Rankine Cycle Driven Heat Pump

Global Ill-Posedness of the Isentropic System of Gas Dynamics

Graph Chatbot

Chattez avec Graph Search

EPFL's District Heating Heat Pump - Performance Analysis for DIfferent Working Fluids

Year-long variability of polycyclic aromatic hydrocarbons (PAHs) and their contribution on winter intense pollution events in the urban environment of Athens, Greece

Electrochemical techniques for photoelectrode characterisation

Modeling and Experimental Investigation of an Oil-Free Microcompressor-Turbine Unit for an Organic Rankine Cycle Driven Heat Pump

Model-based economic analysis of electrification in railway - Understanding the impact of track, operations, and uncertainties

An Integrated Approach to Designing Robust Turbocompressors on Gas Bearings Through Surrogate Modeling and Constrained Multi-Objective Optimization

Global Ill-Posedness of the Isentropic System of Gas Dynamics

Data-Driven Pre-Design Tool for Small Scale Centrifugal Compressors in Refrigeration

Heat Pump driven by a Small-Scale Oil-Free Turbocompressor – System Design and Simulation

Multi-objective optimization of turbo-ORC systems for waste heat recovery on passenger car engines