10C. Pipe Capacity using Equations 10.21 or 10.22 Back to Main
This
page is used to determine the line capacity at a given pressure drop. A plot of friction factor vs. Re. using
trial and error can determine this however, a direct solution is possible. A direct solution for line capacity is
possible by algebraic manipulation of the basic equations.
Solving
for "q" yields
For
small pipe, (10.21)
For large pipe, (10.22)
Where: d =
diameter
q =
volumetric flow rate
r = density
m = viscosity
L =
length of line
gc = mass/force conversion constant
DPf =
friction pressure drop
The
units are defined as those listed on page 321.
To carry out the line capacity calculation the Liquid viscosity, Liquid
density, Pipe length, Inside diameter, and Friction pressure loss of the fluid
must be entered into their entry space. To do so use the mouse to click the
curser in their entry spaces and input the data. Once this has been done,
select Run to execute the
solution.