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Academics – Applied Heat : 2014/JUL/02
Question

Q7. A gaseous fuel consists of a mixture of methane (CH4), 80% by volume, and pentane (C5H12), 20% by volume. It is burned in 10% excess air. The dry combustion gases contain 1% carbon monoxide (CO) by volume.

(a) Formulate the full combustion equation per kmol of fuel.

(b) Calculate the percentage by volume of O2 in the dry combustion products.

Note: Atomic mass relationships: H = 1; C = 12; O = 16; N = 14

Air contains 21% oxygen by volume.

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