Do you know any thermodynamic sofware library to calculate:
The PI System does not provide any software library to calculate these properties. You will have to write your own code, for example using PI ACE, to calculate them. Alternatively you can extract your PI data and use the data with other software product.
I should add that if you can find thermodynamic lookup tables that are suitable to be imported into AF Tables, you can most likely use the AF 2014 Beta to run the calculations. You would of course have to build these calculations (easy from any thermodynamic text books). The one limitation that I can think of with the AF 2014 Beta is that we currently do not have a way for you to iterate to convergence, which often times is required for if you have uncertainties in your online measurements.
Im also interested in the thermodynamic properties. If I were to import a lookup table, can I get AF do an interpolation on that table?
You can do linear interpolation with AF Tables today.
And in this thread Chris Manhard gives an example of 2D interpolation (kind of a hack, but it should work): vcampus.osisoft.com/.../24506.aspx
What kind of tables are you looking to use? Something like Pressure vs. Flow? I'm curious about your use case.
Im wanting to work out a number of paramaters, mainly enthalpy in steam and superheated steam, but also saturation temperature, entropy etc . This is to work the efficiency of a steam turbine and water steam cycle. personally i think im going to go down the PI ACE route, now I've looked into it a little more. I have vba code that should transpose accross into VB.Net code with little manual intervention.
Have you looked into the Steam Functions built in with PI Performance Equations?
No I haven't, But they do seem like the answer in this case.
Thanks for that. Ive just given them a go and its saved me alot of work!
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