The ratio of the energy required to produce the artificial draught (expressed in metres head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as
Options:
A . efficiency of the boiler
B . efficiency of the chimney
C . efficiency of the fan
D . power of the boiler
Answer: Option B Answer: (b).efficiency of the chimney
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