Adiabatic Flame Temperature

Adiabatic Flame Temperature is the temperature which will be achieved if a combustion process is complete.  It assumes that there is no change in work, no heat transfer and no change in kinetic and potential energy.

The hypothetical temperature will be achieved in the event of a stoichiometric combusion ( a combustion without any residues)

The actual temperature which will be obtained is usually lower than the adiabatic flame temperature. This is due to factors such as heat transfer, incomplete combustion, etc.

Every fuel will have an adiabatic flame temperature.  It is the theoretical maximum temperature which can be achieved using the fuel