Hi everyone,
Could you please help me to calculate the mass of the different components of air and gaseous fuel at IVC in dual fuel combustion which the intake air enriched by pure oxygen, so that the intake air would have 23% (vol) oxygen.
Thanks
Your question is a bit confusing, but this would be the general approach.
1. Write a stoichiometrically balanced chemical reaction equation that includes the moles of the most important elements (typically C, H, O, N and possibly Ar, and S) in the fuel and the oxidizer - in your case oxygen-enriched air. The fuel can contain fractional amounts of each element that determine a mole of fuel, with the molecular weight determined by these fractions. You can generally assume the only products are H2O, CO2, N2, SO2, and Ar unless your are doing detailed work or are working under fuel-rich conditions. If the conditions are fuel rich, you will need to add an equilibrium calculation to determine the amounts of H2, CO, and other fuel-rich species are in the products.
2. Decide what overall stoichiometry you want to achieve (which is critical and is not indicated in your question). Depending on the equivalence ratio (fuel to air ratio divided by the stoichiometric fuel to air ratio), this chemical reaction will tell you the number of moles of fuel and air you need.
3. Convert the moles to masses.
Perhaps you can find the answer in https://chemistrygod.com/mass-fraction/ or in users.encs.concordia.ca/~kadem/Chapter_12_Solutions.pdf
The response of Prof. Larry Baxter is complete and correct. Please follow what he has stated.
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