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Vented combustion of hydrogen—oxygen—diluent mixtures in a large volume
Author(s) -
Kumar R. K.
Publication year - 1986
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450640525
Subject(s) - diluent , detonation , hydrogen , volume (thermodynamics) , oxygen , combustion , carbon dioxide , chemistry , stoichiometry , helium , deflagration to detonation transition , materials science , inorganic chemistry , chemical engineering , thermodynamics , nuclear chemistry , organic chemistry , explosive material , physics , engineering
Combustion of hydrogen‐oxygen‐diluent mixtures was carried out in a 2.3‐m‐diameter sphere with venting to a cylinder of 10.3‐m 1 volume. It was found that stoichiometric hydrogen‐oxygen mixtures with helium as the primary diluent led to detonation for all hydrogen concentrations above 20% by volume. Addition of small amounts (5 to 10%) of a secondary diluent such as carbon dioxide or steam suppressed detonation. Carbon dioxide, because of its higher molecular weight, was found to be a better detonation suppressant than steam. Transition to detonation was more difficult to achieve at 100°C than at room temperature.