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Air at 1atm and 100 ?C enters a 6mm diameter, 2

Mechanical Engineering

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Air at 1atm and 100 ?C enters a 6mm diameter, 2.5m long tube at a rate of 2x10-4 kg/s and 
is heated to 160 ?C by means of a constant heat flux through the tube wall.  Determine: 

 

A) Reynold's number inside the tube 
B) The convection heat transfer coefficient inside the tube 
C) The air pressure at the exit of the tube