Self-ignition of hydrogen–nitrogen mixtures during high-pressure release into air
| Autor: | Jennifer X. Wen, W. Rudy, Andrzej Teodorczyk |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Range (particle radiation)
Hydrogen Renewable Energy Sustainability and the Environment 05 social sciences Energy Engineering and Power Technology Thermodynamics chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Combustion Nitrogen law.invention Ignition system Fuel Technology Hydrogen safety chemistry law 0502 economics and business 050207 economics 0210 nano-technology Shock tube Spontaneous combustion QC |
| Zdroj: | International Journal of Hydrogen Energy. 42:7340-7352 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2016.06.051 |
| Popis: | This paper demonstrates experimental and numerical study on spontaneous ignition of H2–N2 mixtures during high-pressure release into air through the tubes of various diameters and lengths. The mixtures included 5% and 10% (vol.) N2 addition to hydrogen being at initial pressure in range of 4.3–15.9 MPa. As a point of reference pure hydrogen release experiments were performed with use of the same experimental stand, experimental procedure and extension tubes. The results showed that N2 addition may increase the initial pressure necessary to self-ignite the mixture as much as 2.12 or 2.85 – times for 5% and 10% N2 addition, respectively. Additionally, simulations were performed with use of Cantera code (0-D) based on the ideal shock tube assumption and with the modified KIVA3V code (2-D) to establish the main factors responsible for ignition and sustained combustion during the release. |
| Databáze: | OpenAIRE |
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