Question

Define equivalent pipe and obtain the expression for its diameter.

Answer 1

Equivalent pipes refer to imaginary pipes which are used to determine the head loss and flow of discharge considering that the flow of discharge and head loss in the actual piping system is same as that of the equivalent pipe. It is a technique used to decrease the large number of attached pipe systems into an individual pipe system such that the piping system analysis can be made easier.
In equivalent pipe structure, the major properties of pipe such as length of pipe, diameter of pipe and roughness factor of pipe are required to do the analysis. During analysis, the two important properties of the pipe have to be assumed. The equation of Hazen Williams is the best usual equation used in the analysis of equivalent pipe system.