Abstract
The optimum minimum ignition energy for quiescent or flowing mixtures
can be correlated by equations. Relative to a specific fuel-air ratio,
only one oxygen addition is optimum. The optimum equivalence ratio$
\phi_opt$ can be correlated by an equation against the oxygen fraction,
and it is independent of pressure and flow condition. The thermal
ignition theory can be used to predict the minimum ignition energy
reduction by oxygen addition both for quiescent and flowing mixtures.
Oxygen addition affects the minimum ignition energy by means of change
of oxygen concentration and change of flame temperature; both increase
the chemical reaction rates and thus flame speeds. Oxygen addition
is a very useful method for improving low pressure ignition or ignition
of alternative or heavy fuels.
Users
Please
log in to take part in the discussion (add own reviews or comments).