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choack (Chemical) (OP)
2 Apr 12 20:13

What basically is the difference of ASPEN and UNISIM? Which of the two is better?
MortenA (Petroleum)
3 Apr 12 15:13
Does a tree make a noice if it falls when nobody is around to notice it?

There are differences in the way that the various tools solve the equations numerically, the GUI is different and the umber of options may vary. The thermodynamics should be similar for similar models, but varioations in e.g. databases may exist.

Best regards
choack (Chemical) (OP)
3 Apr 12 21:07
So which should I choose ASPEN Hysys or UNISIM?
cloa (Petroleum)
4 Apr 12 6:13
To do what?
choack (Chemical) (OP)
4 Apr 12 6:41
To extract physical and dynamic of a plant design with a Peng-Robinson mixtures.

ChemEngMKH (Chemical)
5 Apr 12 7:55
Use the one your company bought its licience
ATMChemE (Chemical)
5 Apr 12 13:52
What kind of plant are you designing?
Helpful Member!  MortenA (Petroleum)
9 Apr 12 12:18
UNISIM was originally HYSYS (dynamic) and was aquired by Honeywell some years back when Aspen aquired HYSYS due to a ruling by the american anti-monopoly laws (as far as i remember). The deal was that Asxpen should make all improvements done to HYSYS for a number of years avaiable to Honewell - i dont know of vise-cersa. However, now UNISIM is no loger identical to HYSYS and i dont think they are compatible anymore. At least not HYSYS-> Unisim.

Aspentech (here i assume you mean Aspen+) a totally different piece of software and not compatable with HYSYS. Try to get a vendor rep to come tell you of the many advantages.

To the best of my knowledege i think that Honeywell wanted to get an easy access to the "operator training" market and has specialiased UNISIM in this direct - but im only guessing.

Best regards

choack (Chemical) (OP)
9 Apr 12 20:14

I think this trend can be closed out..

Hahahaha, got the response, "Ask from vendor".. hahhaha

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