Piping System Resistance Curves
Piping System Resistance Curves
(OP)
Looking to calculate the system resistance curve of a piping system that splits to different processes. The required flow rates and pressures are known at the endpoints. What is the method for determining the system resistance curve at the points shown in the attached sketch?





RE: Piping System Resistance Curves
system resistance curve is the pressure/flow relationship same as the pump curve.
how to calculate it, fluid mechanic books explain it in easy way. it is available online, by google or any in school library
RE: Piping System Resistance Curves
RE: Piping System Resistance Curves
RE: Piping System Resistance Curves
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: Piping System Resistance Curves
RE: Piping System Resistance Curves
you can imagine main pipes, just for sake of understanding, as bunch of parallel pipes, each having flow which equals branch flow, all with the same pressure drop. that means your branch curve will have total pressure drop of all pipe segments up to the consumption point, and flow that equals branch flow. this data together with geodetic height are sufficient to make system curve.
if you have only central pump, you don't need system curves other than total curve; difference between branch path pressure drop and index path pressure drop gives you balancing pressures per branch.