PSV relief header sizing
PSV relief header sizing
(OP)
Hello Everyone ,
I'm trying to size a relief header to which three PSVs are connected on a gas compression package . I'm using the max capacity of the largest PSV (MMSCFD) and sizing the header for 0.7 Mach velocity .
Should I use the simple flow rate equation Q=V*A to find the pipe dia. or there is some more in depth equation that I should be using , since this is a compressible flow .
Thanks for your help in advance .
I'm trying to size a relief header to which three PSVs are connected on a gas compression package . I'm using the max capacity of the largest PSV (MMSCFD) and sizing the header for 0.7 Mach velocity .
Should I use the simple flow rate equation Q=V*A to find the pipe dia. or there is some more in depth equation that I should be using , since this is a compressible flow .
Thanks for your help in advance .





RE: PSV relief header sizing
You cannot use incompressible flow equations for high pressure gas.
RE: PSV relief header sizing
Please avoid duplicate posting - usually you'll get half of the answers.
Dejan IVANOVIC
Process Engineer, MSChE