Interaction Parmeters
Interaction Parmeters
(OP)
Hi Folks
Does anyone can explain me how to find the interaction parameters Kij to be used in equation of State? Iam working with a variety of compounds so what a need is a suitable technique.
Cheers
Does anyone can explain me how to find the interaction parameters Kij to be used in equation of State? Iam working with a variety of compounds so what a need is a suitable technique.
Cheers





RE: Interaction Parmeters
Neeraj
RE: Interaction Parmeters
This is a shortcutbetterthan of opening books..etc
Let me know what you have got
Regards
RE: Interaction Parmeters
One excellent source of interaction parameters for either type of model is the Dechema VLE Data Series, which has quite a few volumes to it now. It covers both types of systems. More importantly, it shows you the various data sets measured and how the different models do in fitting the data, as well as how thermodynamically consistent the data points themselves are. This is important, because you should, when possible, select parameters determined from data in the region of interest to you. If you take parameters blindly from a process simulator, you don't really know the source of the data and how good the fit is. I recall at least one time when some serious modeling errors resulted from trusting the simulator too much. It turned out that the software vendor had re-fit data from multiple sources, which seemed to be those I found separately in the Dechema books, and this resulted in corrupting the fit of some good data by including some bad data. I think an automated procedure had been applied, and unintended effects resulted and were not caught by human review.