1. Butch G. Bataller Lecture on ChE 192
Pipe and Tube Sizing
Butch G. Bataller
Lecture on ChE 192

2. Diameter Calculations
Typical Diameter based on Typical Velocity (Kent, 1980)
For Liquids,

3. Diameter Calculations
Typical Diameter based on Typical Velocity (Kent, 1980)
For Gases,

4. Diameter Calculations
Minimum Diameter based on Maximum Velocity
For Clean Liquids,

5. Diameter Calculations
Minimum Diameter based on Maximum Velocity
For Clean Gases,

6. Diameter Calculations
Minimum Diameter based on Maximum Velocity
For Erosive/Corrosive Liquids,

7. Diameter Calculations
Minimum Diameter based on Maximum Velocity
For Erosive/Corrosive Gases,

8. Diameter Calculations
Optimum Economic Diameter (considering piping, pumping and maintenance costs)
For Turbulent Flow and Di ≥ m,

9. Diameter Calculations
Optimum Economic Diameter (considering piping, pumping and maintenance costs)
For Turbulent Flow and Di < m,

10. Diameter Calculations
Optimum Economic Diameter (considering piping, pumping and maintenance costs)
For Viscous Flow and Di ≥ m,

11. Diameter Calculations
Optimum Economic Diameter (considering piping, pumping and maintenance costs)
For Viscous Flow and Di < m,

13. Diameter Calculations
Optimum Economic Diameter
(Peters and Timmerhaus, 2004)
For Turbulent Flow and Di ≥ m,
D = opt pipe diameter (m), qf = vol. flowrate (m3/s), ρ = density (kg/m3), μ = viscsity (Pa-s)

14. Diameter Calculations
Optimum Economic Diameter
(Peters and Timmerhaus, 2004)
For Turbulent Flow and Di < m,
D = opt pipe diameter (m), qf = vol. flowrate (m3/s), ρ = density (kg/m3), μ = viscsity (Pa-s)

15. Diameter Calculations
Optimum Economic Diameter
(Peters and Timmerhaus, 2004)
For Viscous Flow and Di ≥ m,
D = opt pipe diameter (m), qf = vol. flowrate (m3/s), ρ = density (kg/m3), μ = viscsity (Pa-s)

16. Diameter Calculations
Optimum Economic Diameter
(Peters and Timmerhaus, 2004)
For Viscous Flow and Di < m,
D = opt pipe diameter (m), qf = vol. flowrate (m3/s), ρ = density (kg/m3), μ = viscsity (Pa-s)

17. Diameter Calculations
Based on Suggested Velocity
3-5 ft/s (liquids) and ft/s (gases)
 Backhurst and Harker, 1973
ft/s (liquids) and (gases)
 economic optimum velocity , Perry
5-10 ft/s (liquids)
 Baasel, 1974

18. Diameter Calculations
Typical Velocities in Steel Pipelines

19. Diameter Calculations
Typical Velocities in Gas and Vapor lines

20. Diameter Calculations
Typical Velocities in Equipment lines

21. Diameter Calculations
Economic Velocities for Steel Pipe Sizing

22. Diameter Calculations
Economic Velocities for Steel Pipe Sizing

23. Sample Problems
Pipe is to be specified for a water volumetric flowrate of 200 L/min and working temperature of 30ºC. Compute for the typical pipe diameter.
2. Pipe is to be specified for a water flowrate of 1500 L/min at 30ºC. Estimate for the minimum diameter required based on maximum fluid velocity

24. Sample Problems
3. Sulfuric acid with a volume flowrate of 50 L/min and temperature 30ºC is supplied through a pipeline. Calculate the pipe minimum diameter required. 4. Compute for the minimum pipe diameter requirement for the liquid flowing at of 550 L/min based on the reasonable velocity presented by Backhurst and Harker (1973).

25. Sample Problems
5. Methanol with a flowrate of 75 L/min is pumped from a storage tank. Estimate the minimum pipeline diameter (Sch 40) at the pump suction connecting the storage tank. 6. Carbon dioxide is flowing at a rate of 150 L/min inside a pipe. The temperature of the gas is 32 deg. C and the pipeline pressure is 150 psi. Calculate the minimum diameter of the pipe if the CO2 compressibility factor is 0.82 and the piping cost is 25 $/in/ft.