For quick estimation of AFT one may use the average C_P values of POC. Some of the values are

However, the calculated value of flame temperature using average specific heat values will be greater than when equations 6-11 are used.

Procedure to calculate flame temperature

   i.  First calculate amounts of air and POC for given quantity of fuel.

   ii.  If air and fuel are preheated, calculate sensible heat of air and fuel.

   iii.  Determine heat of combustion from heat of formations of POC. Assume complete combustion.

   iv.  If CO in the products of combustion is known, than subtract the heat of combustion of CO from heat          of combustion value.

   v.  Perform heat balance, as shown in equation 1.