Captured Vent line
Captured Vent line
(OP)
I have a question, I am trying to figure out how to calculate exactly how far a pressure wave will travel up a captured vent line located after a pressure relief valve, or rupture disk.
Right now I am thinking to just figure out at what point the pressure will equal to zero as the volume increases as a function of the piping length.
Any tips or thoughts?
Right now I am thinking to just figure out at what point the pressure will equal to zero as the volume increases as a function of the piping length.
Any tips or thoughts?





RE: Captured Vent line
RE: Captured Vent line
RE: Captured Vent line
You may find that there is no zero psig pressure at any one point, but that a wave front with a high peak pressure and a low pressure trough trailing behind it moves down the pipeline, or something else. It all depends on the magnitude of the flow developed by the transient pressure blow in relation to the pipe maximum capacity transient pressure and flow and whatever normal flow state is being sustained there before and after the transient passes.
Its a whole lot easier to get hold of a hydraulic analysis program with transient analysis capability, or just find some competent engineer that you can pay to do it for you.