Prozess- und Anlagendynamik (PAD)

Lecture conductor:  Günter Wozny  (updated March 25, 2012)

The Übung of the course is conducted by someone in the department.  The Übung used to be model-based, but after they decided to use a very inconvenient and slow (like snail) system called "MOSAIC," the amount of time and effort have increased.  If you can avoid using MOSAIC, avoid it, it is a very incomplete, incapable system.  (Although I don't think you could avoid it, but if you have the chance to, do!)

There are lecture notes that go along with the lecture, then there are the PowerPoint presentation slides.  Overall, I don't think the lecture really teaches, what the professor does is basically read through the lines that he has on the slide show, i.e. "A durch B mal C ist gleich D mal E..." without making a concrete connection to make a sense out of the equation, which, in my opinion, is the sole idea of going to lectures.  If that's what the students are getting from the lectures, then they might as well stay home and read about it.  Make sure you ask questions that increases the connection of concepts in the lecture, even if the professor is very intimidating (and he is!).

Studying for the exam:
Give yourself enough time to study, make sure you know how to apply the concepts.

To help all the students struggling in the class, I want all the students to be able to access as much information as they can for studying.  We made documents of the lecture notes (Skript) available online so you don't have to spend money buying it and it is at the comfort of your own home!
NEW!  As I studied for the PAD exam, I realized that I should probably have posted the slide shows as well.  Sorry that I didn't think of it earlier.  I turned the slide shows from 2009 from PowerPoint format into .pdf format, so there might be a bit of differences, the information is still the same. Lecture slide show of 2009 in PDF or if you prefer to have in PowerPoint format.
NEW!  I have read through the slides and the Skript, and Professor Wozny does an extremely sloppy job on defining what variable is for what and introducing new variables without noting it on the text.  Now, I have a stunning revelation:  a textbook published by Wiley (from authors Irving J. Dunn, Elmar Heinzle Jiri E. Prenosil John Ingham) correlates his material very closely and it has almost all the topics you want to look up on from Professor Wozny lectures (except for additional stuff like math and thermodynamics fundamentals such as Jacobian matrix and enthalpy equations, degree of freedom, all types of process units, how else could these units be connected).  The textbook is called "Chemical Engineering Dynamics" (it is about $40 for paperback and international economy edition, I discourage for downloading unsolicited copies on the Internet, let our education be built on honesty).  The textbook elaborates the concepts more clearly in a neat and tidy way.

For those of you who don't already know this, EB104 offers past exams to help students prepare for exams better.  Here are some of the past PAD exams (Protokoll) that were available and we got ahold of.  (Please note:  It has been brought to my attention that the answers appeared on the exams are not always right, please confirm the answers again while you study.)

My study recommendations:
If you have at least 1.5 month and have nothing else to do, you should study everyday intensively for that 1.5 month, read through the lecture notes and the lecture slide show (PDF).  Review your thermodynamics well, and then go through the past exams (please hold and drag down the page to see lower files in the folder, for some reason Google Documents doesn't give you the scroll bar for it.  March 25, 2012) to see if you can answer the questions.  Put heavy emphases on chapter 6, 7 and 8, where a lot of concepts and ways to format problems are.  (Note that there are slides that are just there for "self study" and if you are in a time constraint, you should know when to stop reading those and get through the materials.)

Professor Wozny doesn't have examples on how to do the momentum balance (Impulsbilanz) in a stream flow in a pipe, and the textbook (Chemical Engineering Dynamics) mentioned above has it.  Do try to understand how to do it before the exam, because he has asked a student in the exam before.

Spend minimal amount of time on chapter 1, it's just introduction.  Chapter 2 and 3 are reviews on thermodynamics, don't spend too much time unless you need to review a lot of  thermodynamics in detail (enthalpy, entropy, Gibb's free energy, internal energy, adiabatic system, ideal gas...).
Chapter 4 starts to introduce the methods to solve the systems and the applications, which are much more important to use and apply in the exam (Wozny loves to have you balance and do tricky applications where you get to find the "faults" of the question).
Chapter 5 gets back into the thermodynamics and fluid mechanics, where a system is broken down into different components and energy and stuff like that.  You need to know how to apply to problems like those! But basically this chapter is still basically a review on thermodynamics.
Chapter 6 and 7 are very important to know, balancing process systems (make sure you know how to balance adiabatic flame in combustion, mixture  reactor with reaction and without reaction, batch distillation columns...), control systems (in s-domain, time-domain and frequency domain): what are the behaviors if this or that, with this or that and without this and that then...  what kind of control system is it (PID type)?  How would system behave?  Stable system?  Balance this process system (columns with components) and make it stable...  Important stuff.
Chapter 8 puts everything together into big problems (thermodynamics, system balancing equations, control system, column with components and their behaviors...), and, in my opinion, if you are SUPER confident about your thermodynamics, control system and system balancing background, it's a time saver to study from ch 6 - 8.