Adiabatic Flame Temperature Calculation for Methane Combustion

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SUMMARY

The adiabatic flame temperature for methane (CH4) combustion with air, consisting of 78% nitrogen (N2), 21% oxygen (O2), and 1% argon (Ar), can be calculated using the provided volume of air, which is 11.264. The combustion reaction involves methane reacting solely with oxygen, while nitrogen and argon serve as inert components that do not participate in the reaction. Key assumptions include complete combustion and ideal gas behavior at 1 atm and 25°C.

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  • Understanding of combustion chemistry, specifically methane combustion.
  • Familiarity with the ideal gas law and its applications.
  • Knowledge of thermodynamic principles related to adiabatic processes.
  • Ability to write and balance chemical equations for combustion reactions.
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  • Research the calculation methods for adiabatic flame temperature using the specific heat capacities of reactants and products.
  • Learn about the combustion reaction of methane with oxygen, including stoichiometry and energy release.
  • Explore the impact of varying air-fuel ratios on flame temperature and combustion efficiency.
  • Investigate the use of software tools for simulating combustion processes, such as CHEMKIN or Cantera.
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Chemical engineers, combustion researchers, and students studying thermodynamics and chemical reaction engineering will benefit from this discussion.

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< Moderator Note -- Thread moved here to Homework Help forum >

One volume of CH4 is mixed with V volumes of air (78 vol.% N2,21 vol.% O2,1 vol.% Ar) at 1 atm and 25°C; then the mixture is ignited. Find the temperature of adiabatic combustion (the adiabatic flame temperature). The volume of air is 11.264.

Explicitly list any assumptions you made while working on this problem.

I don't really know how to write the reaction of CH4 with the air, if anybody could give any insight on this question that'd be so helpful.
 
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There is no such thing as reaction of methane with the air. It will react with oxygen only. Both nitrogen and argon will just be there (and they have to be heated).
 

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