11/06/2008

Ponchon-Savarit Method

Well with finals coming we'd to learn the Ponchon-Savarit/enthalpy-concentration curve method for Unit Op. This method is used in the Distillation chapter to determine the number of theoretical trays needed with given specifications. I'm just gonna give a brief tutorial on how to use this graphical method. I'll do it via pictures, you may click to see the larger version.

The question
The solution




The diagram

The diagram drawn is just a rough sketch, the correct answer is 3.9 trays + 1 reboiler.
I hope this is helpful in some way; it sure helped me to remember the method better haha :)

Feel free to correct/ask questions! Thank you :p

16 comments:

Rwi Hau said...

u know, of all the chapters i learned in unit operations 1, this was the most interesting part and the only one i took interest in!!

Rowan said...

Are you kidding me? I had to learn it by myself...took me a good part of 6 hrs!

Rwi Hau said...

well, my lecturer did teach us, and he was really awesome too. he poured every drop of blood and sweat onto this chapter actually!! he knew his stuff and im glad we had him as our unit operations 1 lecturer.

Rowan said...

Dr. Hayder, right? He didn't teach me this sem...But my unit op lecturer is okay la...hehe...I feel accomplished now that I know how to do it!

Rwi Hau said...

oh ur wrong...its en. zulkifly jemaat. never had dr hayder as my lecturer..

Rowan said...

No kidding! I'm not fond of him...Killed several other subjects of mine when I was under him...

Rwi Hau said...

oh mayb becuz ur mind was bz registering 'i hate u, and i hate u to death' and u completely overlooked how good he was?

Rowan said...

Oh NO...I lost marks because of punctuation. Ridiculous, really. Well that was a long time ago heheh

Rwi Hau said...

really? i dun remember him being so strict with this stuff. i hav no idea.

Rowan said...

Lucky you, suspicious me :p

aMMerZ said...

~hey, i guess we should establish "hate HIM" group..haha..totally killing me when talks about En zulkifly..Dammit!! i will kill those who like HIM..haha

Rwi Hau said...
This comment has been removed by the author.
Rowan said...

I'm just still surprised that you find him to be a good lecturer. Hehehe...

Amar, no point hating people. It's too easy to give in to that.

Rwi Hau said...
This comment has been removed by the author.
Rwi Hau said...

by the way, if everyone happened to be the same, WOULDNT IT BE BORING? all of us would be wearing the same thing cuz we had the same taste, eating the same thing, marrying someone we all liked and catfights ensued, and bla bla bla.lol

Rowan said...

Hahahah point taken! I know we won't have to fight for the same kind of person hahah :D