Fuels and Combustion
Which of the following will generate maximum volume of product of complete combustion (Nm³/Nm³ of fuel) ?

Blast furnace gas
Producers
Carburetted water gas
Natural gas

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Fuels and Combustion
The main drawback of supplying more excess air in the combustion of fuel is the

Enhanced sensible heat loss in the flue gas
Excessive power requirement of air blower
Intermittant and uncontrolled combustion of the fuel
High exit flue gas temperature from the furnace

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