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How to calculate built up back pressure?
- Thread starter johcatrac
- Start date
it depends from the (equivalent) length (and characteristics) of discharge piping...
for a short tailpipe terminated to atmosphere one may presume critical flow (or calculate fluid speed / pressure drop) but considering the small size of the PSV probably that is not required,
for flashing liquids there are different models, see for example
but, as said, probably that is not required in this case.
for a short tailpipe terminated to atmosphere one may presume critical flow (or calculate fluid speed / pressure drop) but considering the small size of the PSV probably that is not required,
for flashing liquids there are different models, see for example
but, as said, probably that is not required in this case.
- Thread starter
- #3
assume max (rated) PSV flow, estimate tout and define fluid state and density, for vapor test mach number, start from the end (atm) and proceed, not too different from other dp calc's...
at 107 C you are close to saturation line (atm) and considering the dt across PSV and piping possibly it's liquid (to verify)
at 107 C you are close to saturation line (atm) and considering the dt across PSV and piping possibly it's liquid (to verify)
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