Fuels and Combustion
With increase in moisture content of coal, its

Bulk density always decreases
Calorific value increases sometimes
Clinkering tendency during combustion increases
None of these

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

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

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