Heat release parameter

In combustion, heat release parameter (or gas expansion parameter) is a dimensionless parameter which measures the amount of heat released by the combustion process. It is defined as


  • is the burnt gas temperature
  • is the unburnt mixture temperature.

In typical combustion process, . For isobaric combustion, using ideal gas law, the parameter can be expressed in terms of density, i.e.,

The ratio of burnt gas to unburnt gas temperature is

See also

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