Concept

High-pressure area

Publications associées (82)

Two-phase frictional pressure drops in U-bends and contiguous straight tubes for different refrigerants, orientations, tube, and bend diameters: Part 1. Experimental results (RP-1444)

Over the years, much research has been conducted on two-phase flows in straight tubes because these tend, in length, to be predominant in two-phase systems. However, two-phase heat exchangers can also have singularity elements, where the most common type i ...

Taylor & Francis Inc2012

Atmospheric impacts and ice core imprints of a methane pulse from clathrates

Jérôme Chappellaz

Reconstructions of past atmospheric concentrations of greenhouse gases provide unique insight into the biogeochemical cycles and the past radiative forcing in the Earth's climate system. We present new measurements of atmospheric nitrous oxide along the ic ...

Elsevier BV2012

Promotional Effect of Ni in the Selective Gas-Phase Hydrogenation of Chloronitrobenzene over Cu-based Catalysts

Lioubov Kiwi, Javier Perez-Ramirez, Fernando Cardenas Lizana

We present 100?% selectivity to p-chloroaniline through the continuous gas-phase (atmospheric pressure; T=393523 K) catalytic hydrogenation of p-chloronitrobenzene over an activated Cu?Al (molar Cu/Al ratio 3:1) hydrotalcite. The synthesis by continuous co ...

2012

A standalone decay heat removal device for the Gas-cooled Fast Reactor for intermediate to atmospheric pressure conditions

Rakesh Chawla, Konstantin Mikityuk, Aaron Simon Epiney

This paper reports a design study for a Brayton cycle machine, which would constitute a dedicated, standalone decay heat removal (DHR) device for the Generation IV Gas-cooled Fast Reactor (GFR). In comparison to the DHR reference strategy developed by the ...

Elsevier2012

On the suitability of partially clathrated ice for analysis of concentration and δ13C of palaeo-atmospheric CO2

Jérôme Chappellaz

The description of rapid climatic changes during the last glacial period at high northern latitudes has been largely documented through Greenland ice cores that are unique climatic and environmental records. However, Greenland ice isotopic records are bias ...

Elsevier BV2011

Size-resolved CCN distributions and activation kinetics of aged continental and marine aerosol

Athanasios Nenes, Spyros Pandis

We present size-segregated measurements of cloud condensation nucleus (CCN) activity of aged aerosol sampled at Finokalia, Crete, during the Finokalia Aerosol Measurement Experiment of summer 2007 (FAME07). From analysis of the data, hygroscopicity and act ...

2011

Refractive Index Gas Sensing in a Hollow Photonic Crystal Cavity

Romuald Houdré, Hua Zhang, Nicolas Le Thomas, Jana Jágerská, Zhaolu Diao

We investigate hollow photonic crystal structures consisting in air-slot photonic crystal nanocavities. The high quality factor similar to 2.6x10(4) of such cavities along with a strong overlap between the resonant mode and the hollow core region allows fo ...

Ieee2011

Electron temperature measurements using N2 and Argon transitions in an ATP fast pulsed DBD

Christoph Hollenstein, Peter Ott, Pénélope Leyland, Philip Peschke, Sami Goekce

Dielectric Barrier Discharge in air at atmospheric pressure ...

2011

Horizontally and on-site grown carbon nanotube membrane for sensitive and selective gas sensing

Mihai Adrian Ionescu, Dimitrios Tsamados, Hoël Maxime Guérin

We report here the fabrication of a sensitive and selective gas sensor using a carbon nanotube (CNT) membrane as the gas sensing transducer. A TiN/Al2O3/TiN stack is used as a support for the CNT growth catalyst, evaporated with a 45° tilt angle on the ver ...

2011

Prediction of the entrained liquid fraction in vertical annular gas–liquid two-phase flow

John Richard Thome, Andrea Cioncolini

The study considers the prediction of the entrained liquid fraction in adiabatic gas-liquid annular two-phase flow in vertical pipes. Nine empirical correlations have been tested against an experimental data bank drawn together in this study containing 150 ...

Elsevier2010

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