What prgram you could use to draw a ponchon and mccabe diagrams?

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Discussion Overview

The discussion centers around the tools and methods for drawing Ponchon and McCabe diagrams, which are used in mass transfer analysis. Participants explore software options, manual methods, and the accuracy of results obtained through different approaches.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant inquires about downloadable software for creating Ponchon and McCabe diagrams.
  • Another suggests that creating the diagrams manually is straightforward if the necessary thermodynamic data is available, proposing a method to model equilibrium stages.
  • A participant mentions challenges in plotting equilibrium data accurately on the graph, specifically referring to y vs x and H-x-y plots.
  • One contributor expresses a desire for software solutions to achieve very accurate results, indicating that manual methods may not suffice for their needs.
  • A later reply provides a link to a site offering free software for the McCabe-Thiele method but notes uncertainty about the software's reliability and safety.
  • Another participant shares that solving by hand typically yields accurate results based on their experience.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the best approach, with some advocating for manual methods and others seeking software solutions. The discussion reflects differing opinions on the accuracy of results from each method.

Contextual Notes

Participants mention the importance of thermodynamic data and the potential complexities introduced by counter-current flow, which may affect the modeling process.

scott_for_the_game
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Hey does anyone know what prgram you could use to draw a ponchon and mccabe diagram for mass transfer.

Particularly one that's downloadable :P.

Cheers.
 
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Rather easy to do yourself.
You just need the thermodynamic data.
Start then by modelling one equilibrium stage with a short program, then re-use it for a multiple stage.
The counter-current aspect may introduce some additional difficulty, but it should be easy to overcome with a bit of time and strategy.
Without garantee, I could think a bit further if you gave me more detail about the system you are stuying.
 
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The major problem for me was plotting the equilibrium data on the graph. (ie, y vs x, H -x -y and N - x -y plots). Once you fit a curve through the data points and print it, the rest of the construction can easily be done with a pencil
 
Cheers. Ah yeh I know its easy enough to do by hand.. but yeh I'm looking for very accurate results. Thats the only reason I wanted to know if it could be done via a program.
 
If you're interested, I found this site with some free software on the mccabe thiele method.
http://www.familiataboada.com/IQ/page4.html
I've not used it, so I don't know how reliable or safe the software is.

Anyway, in my experience, solving by hand usually gives pretty accurate answers.
 
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