if the errors on sensitivity result, yes, may be the error caused the temperature ranges, More precisely because of the critical temperature . In my case of this video, I use water as a fluids, the critical temperature of the water is 373C. so, set the specify limit is 373C. if you used other fluids, you must set limit temperature ranges correspond to critical temperature. ex: for the r-134a fluid is 101C or r-245fa is 153C
Yes, entropy can be negative, its depend what your methode and reference point. Cause we cannot calculate single entropi, we only calculate change of entropy
I use peng robinson methode in this case, based on literature, the reference state is ideal gas pure component 298 K 1 bar entalphy & entropy 0. Please check again in google.
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is it possible to plot T-s or h-s diagram in Aspen Plus directly?
many thanks and keep going plz
How about other fluids? like TRICH-01 and other refrigerants, when I run them I get error
when you simulate other fluids, you must changes the properties package. ex: Peng-Rob for refrigerants
12PM yeah I did that but still get errors, is it because of the temperature ranges?
if the errors on sensitivity result, yes, may be the error caused the temperature ranges, More precisely because of the critical temperature . In my case of this video, I use water as a fluids, the critical temperature of the water is 373C. so, set the specify limit is 373C. if you used other fluids, you must set limit temperature ranges correspond to critical temperature. ex: for the r-134a fluid is 101C or r-245fa is 153C
worked,,, you're a live saver! thanks a million!
how can i get aspen plus pleaaaase
entropy should be positive right? yours is negative
Yes, entropy can be negative, its depend what your methode and reference point. Cause we cannot calculate single entropi, we only calculate change of entropy
In this case Wich is the reference point? Thanks for ur answer.
I use peng robinson methode in this case, based on literature, the reference state is ideal gas pure component 298 K 1 bar entalphy & entropy 0. Please check again in google.