pressure safety valve (gas psv) relieving temperature

[devildare013]

dear all,
i need to calculate pressure safety valve gas relieving temp.
need help..!!

[kacheek]

Flash at the relieving pressure. The temperature is the relieving temperature

[devildare013]

Flash at the relieving pressure. The temperature is the relieving temperature

but how do i calculate it??

[nobelr]

thanks a lots Kacheek!!

[stawad]

to calculate the outlet temperature you need to simulate the valve,
I simulate a PSV in Excel 64 with PRODE PROPERTIES which is a process library
working with Excel 32, 64, Matlab, Mathcad etc. a very good tool,
see these blog entries,

'http://www.egpet.net/vb/entries/82302-Comparison-of-Homogeneous-equilibrium-%28HEM%29-VS-NON-equilibrium-%28HNE%29-models'
'http://www.egpet.net/vb/entries/82303-PSV-sizing-with-HEM-%28Homogeneous-Equilibrium-Model%29-limits-of-application'
'http://www.egpet.net/vb/entries/82307-Calculate-fluid-temperature-and-phase-equilibria-when-a-PSV-opens'

also you can download a copy from prode site

[carlo.stenali]

the isentropic nozzle model available in PRODE PROPERTIES see prode.com
allows to model
-gas PSV
-liquid PSV
-gas+liquid PSV (with HEM, HNE, NHE models)
you may refer to the previous post for the details