Effect of inert and reactive gas additives to hydrogen and air on blow-off of flame at hydrogen release from microleakage

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

This paper presents experimental data on the effect of inert (He, N2, Ar, CO2) and reactive (СН4, O2, CF3Br, (CH3O)3PO) gas additives to hydrogen and ambient air on flame blow-off during diffusion combustion of a hydrogen microjet emanating from a micronozzle into air. It is found that the addition of the above gases to hydrogen narrows the microjet velocity range of stable combustion of hydrogen. For hydrogen with the additives studied, the critical velocity of flame blow-off depends primarily on the mean molecular weight of the combustible mixture. When the gases are added to the air surrounding the diffusion flame, the critical velocity of flame blow-off is determined by their inhibiting effect on the chemical reactions of hydrogen oxidation. The results can be used to determine the minimum concentrations of flame-suppressing additives required to prevent the ignition and combustion of hydrogen in its accidental releases.

Язык оригиналаанглийский
Страницы (с-по)2796-2803
Число страниц8
ЖурналInternational Journal of Hydrogen Energy
Том46
Номер выпуска2
Ранняя дата в режиме онлайн4 ноя 2020
DOI
СостояниеОпубликовано - 6 янв 2021

Предметные области OECD FOS+WOS

  • 1.04.EI ХИМИЯ, ФИЗИЧЕСКАЯ
  • 1.04.HQ ЭЛЕКТРОХИМИЯ
  • 2.07.ID ЭНЕРГЕТИКА И ТОПЛИВА
  • 1.03.UK ФИЗИКА КОНДЕНСИРОВАННОГО СОСТОЯНИЯ

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