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Academics – Applied Heat : 2016/DEC/03
Question

Q4. A fuel has a mass analysis of 80% carbon, 15% hydrogen, 1.5% sulphur and 2% water. The remainder being ash.

The fuel is completely burned in 10% excess air.

Calculate EACH of the following:

(a) the stoichiometric air fuel ratio by mass; (6)

(b) the mass of oxygen required to convert the SO2 in the combustion products to soluble SO3; (4)

(c) the volumetric analysis of the dry combustion products after the formation of the SO3. (6)

Note:  Relative Atomic masses: C=12, H=1, O=16 N=14, S=32.

Air contains 23% oxygen by mass

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