Adiabatic flame temperature

  1. Hi to all,
    I want to know the temperature after combustion of methane with air. How will i calculate it? Kindly inform me.

  2. jcsd
  3. Hi, first you need a balanced reaction eq with air

    [tex]CH_4 + 2O_2 + 7,43N_2 => CO_2+2H_2O+7,43N_2[/tex]

    then you can use this relation;

    [itex]T_f=T_o+\frac{n\Delta H_c}{\Sigma nC_p}[/itex]

    where T_f is Adiabatic flame temperature
    T_o : 298 K, n: nb of moles and [tex]\Delta H_c [/tex]is heat of combustion of methane
    [tex]\Sigma nC_p[/tex]
    is the thermal capacities of RHS, thus: [tex]1*C_p(CO_2)+2C_p(H_2O)+7,43C_p(N_2)[/tex]

  4. Borek

    Staff: Mentor

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