I did some tests with the steady state column in Prode Properties to compare EOS models such as Peng-Robinson, Soave etc. (the Extended PRX-SRKX versions in Prode) with GERG 2008 model which should be more accurate on both vapor-liquid and enthalpy,
for several separations (HC) I observe that...
we inject glycol as hydrate inhibitor in a natural gas stream which contains water + some salts (mainly Nacl), glycol dosage has been estimated averaging depression temperatures of MEG & salts (GPA), I have now Prode software, do you have expericence with CPA electrolyte or Pitzer models ? Can...
problem : PSV sizing for two phase (vapor+liquid) flow for HC mixtures
comment : I observe quite large differences 20/25% and more with different methods as HEM (API Omega) HEM (rigorous) HNE and HNE-DS, not sure which is the most accurate, In some cases HNE and HNE-DS return reduced areas...
I am evaluating the impact of HNE (ISO 4126) model over HEM (API Omega) for liquid and two-phase (vapor+liquid) flows,
as I understand the HNE model predicts critical flows in excess of 200% and more over HEM model and that can signicantly reduce the size of orifices under certain conditions...
