Problem 0
Problem 1
Write following (from memory, study first if needed):
- Air mole fraction of O2
- Air mole fraction of N2
- mole ratio of N2 to O2 in air
- mole ratio of Air to O2 in air
- MW of O2
- MW of N2
- MW of C (to 5 total significant digits)
- Mean MW of air (2 significant digits)
- Convert mole fraction of O2 in air to mass fraction by hand using the formulas provided (which you should know)
- Convert mole fraction of N2 in air to mass fraction by hand using the formulas provided (which you should know)
Problem 2
- Write the stoichiometric reaction for methane combustion in air to products of complete combustion (PCC)
- Write the stoichiometric reaction for general C$_x$H$_y$ combustion in air to products of complete combustion
- Define equivalence ratio
- Define excess air
- Derive the formula for excess air in terms of equivalence ratio
- Write the C$_x$H$_y$ reaction in terms of $\phi$ when rich
- Write the C$_x$H$_y$ reaction in terms of $E$ when lean
Problem 3
- Define the mixture fraction
- What are the min and max values of mixture fraction?
- Write the equivalence ratio in terms of the mixture fraction and the stoichiometric mixture fraction.
- What is the stoichiometric mixture fraction for methane/air combustion to PCC?
- What is the stoichiometric mixture fraction for methane combustion if you change the streams from methane and air to methane/nitrogen and oxygen? That is, move the nitrogen in air to the fuel stream instead of the air stream.