Control Valve two-phase flow with PRODE software
Control Valve two-phase flow with PRODE software
(OP)
do you have experience with HNE model available in Prode Software when applied to control valves (two phase flow) ?
I have some cases where the usual ISA formulations seem to produce unreliable results (revamp of existing plant) I have data sheets and drawings but valve manufacturer is no longer active.
I have some cases where the usual ISA formulations seem to produce unreliable results (revamp of existing plant) I have data sheets and drawings but valve manufacturer is no longer active.





RE: Control Valve two-phase flow with PRODE software
don't know the very last ISA edition but, according my knowledge, ISA formulations are not reliable for two phase flow,
when possible I ask manufaturer to provide calc's,
anyway there are a few methods as HNE-DS which may be applicable (it depends for specific application), see this paper
"Sizing of nozzles, venturis, orifices, control and safety valves for initially sub-cooled gas/liquid two-phase flow – The HNE-DS method by J. Schmid"
Prode Properties base includes HNE method, similar to HNE-DS, which I have utilized mainly for PSV (in some cases more accurate compared to HEM),
the HNE-DS is available in extended version,
you may contact Prode to obtain the HNE-DS and the Excel page for solving your problem (the page is different from that included in dsitribution and suitable for PSV, it works for control valves).
RE: Control Valve two-phase flow with PRODE software
I agree that for specific applications one should ask the manufacturer but, as said, I cant' get support and I need to verify a few cases for two phases flow,
thank you for your suggestion to get the Excel page for control valves from Prode
(I didn't know there was a specific application)