Modelling of hydrogen induced pressurization of internal cavities
| Autor: | Krzysztof Wolski, Aurore Montouchet, Gilles Perrin, Jean-Gabriel Sezgin, Cédric Bosch |
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| Přispěvatelé: | Laboratoire Georges Friedel (LGF-ENSMSE), Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Département Mécanique physique et interfaces (MPI-ENSMSE), École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-SMS, Centre Science des Matériaux et des Structures (SMS-ENSMSE), Creusot Forge, AREVA SFARSTEEL, AREVA NP, AREVA NP - Centre Technique (FRANCE) |
| Rok vydání: | 2017 |
| Předmět: |
Equation of state
Hydrogen Hydrogen diffusion and solubility Diffusion Energy Engineering and Power Technology Thermodynamics chemistry.chemical_element Abel-Noble EOS 16MND5 steel 02 engineering and technology Internal cavity 7. Clean energy [SPI.MAT]Engineering Sciences [physics]/Materials Matrix (geology) Cabin pressurization Desorption 0502 economics and business Fugacity VACANCY FORMATION ENERGIES REDUCING GRAIN-BOUNDARY 050207 economics Solubility DISLOCATION LINE Renewable Energy Sustainability and the Environment STEEL IRON 05 social sciences 021001 nanoscience & nanotechnology Condensed Matter Physics INCLUSIONS Hydrogen fugacity SOLUTE SEGREGATION FRACTURE-STRESS Fuel Technology chemistry INDUCED CRACKING Real gas equation of state 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy International Journal of Hydrogen Energy, Elsevier, 2017, 42 (Issue : 22), pp.15403-15414 ⟨10.1016/j.ijhydene.2017.04.106⟩ |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2017.04.106 |
| Popis: | International audience; Internal cavities can constitute a crack initiation site especially if filled with hydrogen at high pressure. A new refined equation of state based on recent NIST database has been introduced in order to model the equilibrium pressure. It is based on a thermodynamic definition of fugacity and uses the NIST data relating hydrogen density and pressure to define a new fugacity pressure quadratic dependence. The resulting Equation Of State (EOS) is compared to the standard Abel Noble EOS and it is shown that for a given fugacity, imposed by a Sievert's law, the corresponding pressure is significantly higher. This new refined EOS was introduced into a previously developed numerical model of hydrogen diffusion and desorption and applied to evaluate the kinetics of pressure build-up within a cavity and its equilibrium pressure. It has been shown that the kinetics of pressure buildup at room temperature, which reaches values close to equilibrium in some hundreds of hours, is compatible with the industrial quality control procedures. The calculated pressures are in the range 4500-8650 bars depending on hydrogen solubility, which differs between the matrix and the segregation bands, and tend to equilibrium values obtained from mass balance approach. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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