King Fahad University of Petroleum & Minerals

Chemical Engineering Department

CHE 204 – Transport Phenomena I

1.      Solve the following problems from chapter 1 in your textbook 1.2, 1.14, 1.15, 1.30 and 1.34

2.      Solve the following problems from chapter 2 in your textbook:         2.1, 2.8, 2.12 and 2.13

3.      Solve the following problems from chapter 2 in your textbook          2.15, 2.21, 2.22 and 2.23

4.      Solve the following problems from chapter 4 in your textbook:         4.16, 4.18 and 4.21.

5.

a.       Problems 3.9, 3.10 and 3.13 of textbook.

b.      Water is pumped from one storage tank (open to atmosphere) to a higher tank at steady rate of 9.5x10–4 m3/s. The difference in the elevations of the two water levels is 30 m. The higher tank is closed and has an absolute pressure of 170.3kPa. The absolute pressures at the inlet and outlet of the pump are 135.8 kPa and 652.9 kPa respectively. The power supplied by an electric motor to the pump is 750 W. Find the friction losses in the pipe per kg of water flowing.

6.

a.       Problem 4.7 of your textbook.

b.      Problem 4.10 of your textbook.

c.       A liquid (m = 600 kg.m/s and r = 1300 kg/m3) flows through a bed packed with sand. The bed has a diameter of 38 mm and a length 16 mm. The mass flow rate of the liquid through the bed is 5x10-4 kg/s. Calculate the pressure drop through the packed bed if the sand particles have a mean diameter of 0.7 mm and e = 0.38.

d.      Coal particles are to be burned at atmospheric pressure in a fluidized be. The density of coal is approximately 1000 kg/m3.the mean particle diameter is 0.074 mm and the gas, mostly air, has a viscosity m = 10-4 kg.m/s. Calculate the minimum fluidization velocity. The void fraction is not given, so use the approximation e3/(1-e) = 0.091.

e.       A glass tube of inside diameter 2 cm and length 20 cm is packed with glass spheres. The void fraction of the packing is 0.35. At a pressure drop of 10 psi the flow rate of air is 4 liters/min. Calculate the diameter of the glass spheres.

f.        A glass tube of inside diameter 2 cm and length 20 cm is packed with glass spheres. The average diameter of the spheres is 1 mm. At a pressure drop of 10 psi the flow rate of air is 4 liters/min. Calculate void fraction of the packing.

7.

a.       Problem 6.2

b.      Problem 6.7 (solve this problem for q = 0)

c.       Problem 6.14

d.      Problem 6.20

8.      11.5, 11.6 and 11.15 (solve this problem for a power law fluid only).

9.      Solve the following problems from your textbook:                8.1, 8.3 and 8.19