Closed System Combustion
For a combustion process in a closed system, the integrated first law gives (kinetic and potential energies ignored)
As for enthalpies, the internal energies must be taken with respect to proper reference data, and the best way to ensure this is to determine them from enthalpies.
For ideal mixtures, which exhibit neither enthalpy nor volume of mixing, we have
Example: Closed System Combustion
As an example we consider the isochoric and adiabatic combustion of mol of methane with nO2 = 9 mol of oxygen (XCH4 = 0.1, XO2 = 0.9) in a closed container, the initial temperature is T1 = 25◦C and the initial pressure is p1 = 10 atm. Reactants and products are considered as ideal gases.
The chemical equation for this reaction is
Related posts:
Properties and Property Relations:The Ideal Gas
Properties and Property Relations:Fully Incompressible Solids and Liquids
Example: Heating Problems
Introduction on Ventilation and Indoor Air Quality
REFRIGERANTS:MOLECULAR WEIGHTS
Sizing Residential Heating and Air Conditioning Systems:Heat Loss Tabulation Forms
Ducts and Duct Systems:Duct Furnaces
Heating Fuels:Comparing Heating Fuel Costs
Three-Dimensional Flows in Axial Turbomachines:3D design