To take a glance at all pocketEngineer software and OS requirements, click Software List.

Determine pipe size by velocity method is common. However, pipe sizing by head loss (friction) method is also commonly adopted to limit the friction loss for energy efficiency issue.

Built-in features:

• pipe sizing by velocity or head loss method using Hazen-Williams or Darcy-Weisbach formula.

• calculation in imperial or metric system via the selection of flow units (l/s, l/m, m3/s, m3/h, ft3/s, ft3/hr, gpm). You can set default start-up unit.

• built-in pipe material and ID (inside diameter) selections for use with the Diameter option to calculate exact head loss for the given pipe diameter.

Sizing Example:

200 gpm of water flows in a copper pipe. The pipe head loss shall be limited to 3 ftH2O/100 ft. Determine the pipe size.

Solution:

(a) Pipe diameter = 4.0 inch

(b) Pipe velocity = 5.11 ft/s

(c) Actual head loss using Hazen-Williams equation:

2.3590 mH2O/100m

23.1344 kPa/100m

0.2313 bar/100m

2.3590 ftH2O/100ft

1.0225 psi/100ft

(d) Actual head loss using Darcy-Weisbach equation:

2.1129 mH2O/100m

20.7206 kPa/100m

0.2072 bar/100m

2.1129 ftH2O/100ft

0.9158 psi/100ft

Final Thought: Pipe sizing your way.

Note:

(1) For Android OS: see aPipeSizer.

(2) For Gravity Flow drainage pipe sizing, see GravityFlow PipeSizer (Windows OS).