ABSTRACT
Turbulent flow heat transfer coefficients were measured for the flow of air through a 45.7 cm long × 6.4 mm i.d. (18 × 1/4 in) copper tube as the air was heated by immersing the tube into an agitated water bath at about 60°C (140°F). The temperatures of the entering and exiting air were recorded as a function of flow rate and were used to determine the duty and the experimental heat transfer coefficient. Finally, the experimental results were compared to calculated results from the Colburn equation; the average difference between the experimental results and the correlational results was about 5%.
