Concept
Piston (mécanique)
Publications associées (19)
Increasing the Energy Efficiency of Gas Boosters for Hydrogen Storage and for Refueling Stations
A new electrically driven gas booster is described as an alternative to the classical air-driven gas boosters known for their poor energetic efficiency. These boosters are used in small scale Hydrogen storage facilities and in refueling stations for Hydrog ...
MDPI2023Estimating the non-dimensional energy of vortex rings by modelling their roll-up
The non-dimensional energy of starting vortex rings typically converges to values around 0.33 when they are created by a piston-cylinder or a bluff body translating at a constant speed. To explore the limits of the universality of this value and to analyse ...
2022Evaluating objective measures of impairment to trunk strength and control for cross-country sit skiing
In Paralympic cross-country sit skiing, athlete classification is performed by an expert panel, so it may be affected by subjectivity. An evidence-based classification is required, in which objective measures of impairment must be identified. The purposes ...
SPRINGER LONDON LTD2021Turbocompressors for Domestic Heat Pumps – A Critical Review
Jürg Alexander Schiffmann, Jean-Baptiste Carré
Small-scale, oil-free radial compressors on gas lubricated bearings represent a promising alternative to state-of-the-art compressor technology for driving domestic sized heat pumps. The inherent characteristics of turbocompressors manage to fit the heat p ...
2017Experimental investigation of a two-stage oil-free domestic Air/Water heat pump prototype powered by an oil-free high-speed twin-stage radial compressor rotating on gas bearings
Daniel Favrat, Jürg Alexander Schiffmann, Jean-Baptiste Carré
Domestic heat pumps have been identified as a key-technology to decrease the energy consumption of the domestic sector, which represents 29% of the world final energy consumption. Space & water heating represent more than two third of the domestic sector e ...
2016Contribution to the Technique of Compressed Air Energy Storage
Development of intermittent solar and wind energies and the demand peak increase has made energy storage very important in energy policy. Thus, energy storage will play a key role in enabling the world to develop a low-carbon electricity system. An interes ...
EPFL2015Injection Device
Yves Perriard, Romain David Besuchet
An injection deviee for injecting injection material, comprising: an elastic deformable element (3) able to exert a pushing force on a piston (20) of a syringe (2) so as to eject a quantity of injection material out of the syringe (2); a stopper ( 4) for r ...
Juvaplus SA, Neuchâtel (CH)2015Cheetah-cub-S: Steering of a Quadruped Robot using Trunk Motion
Auke Ijspeert, Peter Eckert, Karl Weinmeister
A reliable concept for steering was realized by in- tegrating a spine-like structure with one DoF into a quadruped robot - Cheetah-cub-S. We increased maneuverability dramat- ically compared to a robot with rigid spine, while keeping controlling effort low ...
2015On The Strategies Towards Isothermal Gas Compression And Expansion
Alfred Rufer, Mahbod Heidari, Sylvain Lemofouet-Gatsi
Isothermal compression/expansion is regarded as the most promising process in many applications and many researchers and inventors have tried different methods to achieve this goal. The current article first studies the gradual roadmap from adiabatic towar ...
2014Partitioning of Si and platinum group elements between liquid and solid Fe-Si alloys
Crystallization of the Earth's inner core fractionates major and minor elements between the solid and liquid metal, leaving physical and geochemical imprints on the Earth's core. For example, the density jump observed at the Inner Core Boundary (ICB) is re ...
Pergamon-Elsevier Science Ltd2014