Free convection velocity. from BSL - 10A5

(a) Verify the expression for the average velocity in the upward-moving stream in (Eq. 10.9-16). (b) Evaluate p for the conditions given below. (c) What is the average velocity in the upward-moving stream in the system described in(Fig. 10.9-1)for air flowing under these conditions? Pressure 1 atm Temperature of the heated wall 100C Temperature of the cooled wall 20C Spacing between the walls 0.6 cm

Answer: 2.3 cm/s