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Question $2$

Methane is completely combusted using $15\%$ excess air. Assuming G kg s$-1$ of fuel gas is fed

into the chamber. Please use the $G$ value assigned to you according to the last digit of your

URN, given in Table $2\mathrm{.}1.$

$($a$)$ Determine the molar flow rate of the oxygen and nitrogen in the excess air.

$[8]\{1$ page$\}$

$($b$)$ Using the table method shown in the lecture notes under fuel gas calculations, determine

the composition of the flue gas exiting the chamber.

$[5]\{1$ page