Recently I'm trying to edit a pure component mass density and heat capacity of an existing component NaNO3 but failed. Could anyone help me on this? Thanks a lot.
Dear Francesca,
you can specify heat capacity and density in Aspen Plus Properties. there are 2 approaches at least. First is to go in pure components properties and see the parapeters that the program uses and edit them to calculate eha tyou need. The other is to make a regression and set there vules to represnt your experimental or literature data. hope it helps
Do you mind to help me check my fie ? Cause i use the first method to modify the heat capacity and mass density in property, but it didn't change in simulation environment. I'm really confused about this. Thank you so much. Reald Tashi
Hello,
First NaNO3 is solid,
if you have molted salt case then use SOLIDS property method
and then change CPLDIP-1 heat capacity
Second if you have NaNO3 solution -aquatic then ion must be spacitied; ELENRTL is for this,
then change heat capacity
Third
If you do what to mess with ions then use imput NaNO3 as conventional and change CPSDIP-1 for solid heat capacity, aspen will use your values for calculations
hope it helps
Dear Reald,
Thank you so much. Exactly I'm trying to simulate molten salt. In your first suggestion, for changing NaNO3 to solid, then i need to change CPLDIP-1 which is liquid heat capacity. Did you mean i need to change solid capacity which is CPSDIP-1? By the way, I'm using Aspen plus V8.8. I couldn't even find CPLDIP-1 in property/method/parameters/pure component. Did you have a problem like this ? Thank you. Reald Tashi
Regards,
Francesca
hello, Francesca Wang
it esay just follow these steps
first start a new simulation file, i don know what you have changed in what you already have.
then write NANO3 (leave NANO3 as conventional) in component then NEXT to method. use SOLID.
GO to to simulation enviroment.
use a simple heat exchenger and to streams with Na NO3 as the only component.
use the pressure and temperature you need (use those at which NANO3 is in molten salt form ) in feed stream and heat exchenger:
run the simulation and check what heat capacity, density etc are.
now go to properties enviroment , components/ Specifications . there pres Reveiw.
This will open a window in Parameters/ Pure components where data that are used can be seen, change molecular weight, then on your left you can see CPLDIP-1 for heat capacty and DNLDIP-1 for denisty o liquids. change by small steps and run in simulation enviroment to see the effect.
it is simple
Dear Reald Tashi ,
Thank you so much. Followed all these steps I changed theses parameters. I struggled for a long time.
Regards,
Francesca
Dear Francesca Wang
so it worked for you right?
if there is anything else do tell
kind regards
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