Question: 4. Air at 2000C is heated as it flows through a tube with a diameter of 2.54 cm at a velocity of 10 m/s. Calculate

4. Air at 2000C is heated as it flows through a

4. Air at 2000C is heated as it flows through a tube with a diameter of 2.54 cm at a velocity of 10 m/s. Calculate the heat transfer per unit length of tube if a constant-heat-flux condition is maintained at the wall and the wall temperature is 200C above the air temperature, all along the length of the tube

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