A 15kg of air is supplied per kg of fuel burnt to the combustion chamber of a boiler using fuel 600kg/hr. the temperature of flue gases and ambient air are 273°C and 32°C. If the minimum draught required to start the flue is 9.5mm of water, find out the minimum height of the chimney?(a) 22.66m(b) 23.84m(c) 24.52m(d) 25.16mI have been asked this question by my college director while I was bunking the class.Asked question is from Draught System topic in division Steam Generators & Accessories of Energy Engineering

A 15kg of air is supplied per kg of fuel burnt to the combustion chamb

1.	A 15kg of air is supplied per kg of fuel burnt to the combustion chamber of a boiler using fuel 600kg/hr. the temperature of flue gases and ambient air are 273°C and 32°C. If the minimum draught required to start the flue is 9.5mm of water, find out the minimum height of the chimney?(a) 22.66m(b) 23.84m(c) 24.52m(d) 25.16mI have been asked this question by my college director while I was bunking the class.Asked question is from Draught System topic in division Steam Generators & Accessories of Energy Engineering
Answer» The correct ANSWER is (a) 22.66m The EXPLANATION is: Temperature of FUEL GASES Tg = 237 + 273 = 510K Temperature of ambient air Ta = 32 + 273 = 305K Drought in MM of water Hw = 9.5mm Mass of air mg = 15kg We have,

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