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  3. a) define the following terms: i) calorific value

a) Define the following terms: i) Calorific Value ii) Volumetric Percentage with respect to air composition iii) Gravimetric...

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Mechanical Engineering

a) Define the following terms:

i) Calorific Value

ii) Volumetric Percentage with respect to air composition

iii) Gravimetric percentage with respect to air composition

iv) Stoichiometric Ratio

b) In combustion chemistry, state why the usage of excess oxygenis often desirable.

c) Consider the combustion of pentane. Determine:

i) The stoichiometric air to fuel ratio

ii) The excess air supplied, if 8% CO2 (by vol) is found in thedry product. ( Take air to be 21% Oxygen,and 79% Nitrogen)

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