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Exhaust gases having properties similar to dry air enter a thin-walled square duct exhaust stack at...

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Mechanical Engineering

Exhaust gases having properties similar to dry air enter athin-walled square duct exhaust stack at 500 ºC. The stack is madeof galvanized iron and is 20 m tall and 0.25 m side. If the gasflow rate is 0.5 kg/s and the stack surface has the outside ambienttemperature of 10 ºC estimate:

a) the outlet temperature of the exhaust gas

b) the heat transfer coefficient

c) the rate of heat transfer

d) the pressure drop

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