1 reply to this topic

[mrbabu]

for a two stage compressor on a hydrogen rich, gas (H2 > 30%) stream

the method PSPF() in Prode Properties set to Huntington method (polytropic model)

returns quite different final temperatures  depending from selected thermo package

(Soave Redlich Kwong, Peng Robinson, Extended Peng Robinson etc.),

I understand that this depends from the different values of density, enthalpy and entropy predicted by different models,

which package should I select for a mixture of H2 38% N2 30% CO2 18% ... ?

Thanks

 

[marchem]

assuming it's not wet gas the Extended Peng Robinson model available in Prode Properties should provide reasonable accuracy,

Extended Peng Robinson has 5 parameters per each chemical with good results even for hydrogen,

if there is water you may consider complex models such as CPA ...