Data on working fluids

[neweng2]

Hi,

I am trying to find reliant information on certain fluids for calculations I am doing on ORC processes. I have been having a hard time finding proper for example entropy-enthaply,pressure-enthalpy diagrams. Does anybody have any tips on where to find such data? websites,books,programs?

Thank you

 

[dcasto]

NIST has a program called REFPROP that has the 6 major alkylbenzenes that have high efficiencies.

 

[neweng2]

OK I'll check it out. Strange, but the one thing that has been most difficult when doing my calculations has not been the calculations nor pinch analysis or so on, rather finding reliant diagrams with enthalpy,entropy and pressures and so on to be able to present results..
Thank you very much for taking the time to answer