Air at a temperature of 290 K flows into the tube depicted in Figure P 9.6, which has an inner diameter of 2.5 cm and is 10 cm long. The air average velocity is 10 m/s. The two ends of the tube are...

Air at a temperature of 290 K flows into the tube depicted in Figure P 9.6, which has an inner diameter of 2.5 cm and is 10 cm long. The air average velocity is 10 m/s. The two ends of the tube are open. The tube inner wall temperature is 310 K

a. Estimate the average heat transfer coefficient using an appropriate correlation.

b. Repeat Part a using the Chilton–Colburn analogy.

c. Discuss the potential sources of inaccuracy in your estimates and attempt to improve your estimate.