Adiabatic temperature in a combustion chamber refers to the theoretical temperature that would be achieved if the combustion process occurred without any heat transfer to or from the surroundings. It represents the maximum temperature that can be reached during the combustion process under idealized, adiabatic conditions.
The formula to calculate the adiabatic temperature rise in a combustion chamber is based on the first law of thermodynamics and is defined as follows:
- Adiabatic Temperature (T_ad) is the adiabatic temperature rise, typically measured in kelvin (K) or degrees Celsius (°C).
- T_inlet is the initial temperature of the air and fuel mixture entering the combustion chamber, typically measured in kelvin (K) or degrees Celsius (°C).
- HRR is the heat release rate, which represents the rate at which heat is released during combustion, typically measured in watts (W).
- C_p is the specific heat capacity at constant pressure of the combustion gases, typically measured in joules per kilogram per kelvin (J/(kg·K)).
- Mass Flow Rate is the rate at which the air and fuel mixture flows through the combustion chamber, typically measured in kilograms per second (kg/s).