Determine the height of the chimney to get net draught of 12mm if the – McqOptions

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1.	Determine the height of the chimney to get net draught of 12mm if the total losses are 4mm. the temperature of air is 25^oC and the temperature of chimney gases is 300^oC. The mass of air used per kg of fuel used is 18kg. One kg of air occupies a volume of 0.7734m³ at normal temperature?
A.	26.84
B.	20.22
C.	29.93
D.	18.09
Answer» D. 18.09

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