Combustion Reactions: Screencasts
Overview of combustion, which is the reaction of fuel (usually hydrocarbons) with oxygen to produce water, carbon dioxide/carbon monoxide, and energy. Reviews percent excess air and wet/dry basis.
We suggest that after watching this screencast, you list the important points as a way to increase retention.
Introduces percent excess air for combustion reactions.
We suggest that after watching this screencast, you list the important points as a way to increase retention.
Important Equations:
\[\% \; \mathrm{Excess\; Air = \frac{moles\; air\; fed – stoichiometric\; moles\; air}{stoichiometric\; moles\; air}} * 100\%\]
Only complete combustion is considered in order to determine the stoichiometric moles of air required when calculating percent excess air.
For each species involved in a combustion reaction:
\[n_i = n_{i0} + \nu _i \xi\]
where \(n_i\) is the number of moles of component \(i\) leaving the reactor, \(n_{i0}\) is the number of molecules of component \(i\) entering the reactor, \(\nu _i\) is the stoichiometric coefficient of component \(i\) (negative for reactants, positive for products), and \(\xi\) is the extent of reaction.