Determine mass of air needed for complete combustion, Mechanical Engineering

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How are fuels divided ? Write disadvantages and advantages of each types.

(b) A sample of coal supplied to a boiler has the following composition by mass :

Carbon = 88%, Hydrogen = 5%, Oxygen = 3%, Nitrogen = 1%

Determine (a) Mass of air needed for complete combustion of 1 Kg of coal.

(b) Dry analysis both by volume and mass of products of combustion when 15% excess air is supplied.


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