Firstly I want to talk about my PCP II final exam which I took this morning. It was a very stressful exam. When the lecturer said we can start the exam I read the first question carefully. I read it for a several times but I still don’t know how to solve the problem. Because of the question did not give any temperature for the air inlet, I stuck at that question for about half an hour. It already wasting my time for solving the question and I leave until what I can solve only. I hope the mark that I obtained is not very low. I was also surprise when I take a look at question number 3. Usually in class session, we are given the balance equation of hydrocarbon and by balancing the equations, we can solve the whole question by doing the enthalpy table. But, this question is quite unique and it has to be balance in term of x and also y. This question just want to see whether we are really understand about the enthalpy table or not.
Move to the next question, it is about entropy generation. The hardest topic in PCP II. But this question is not as hard as the topic. It is assumed that air is ideal gas. So the equation of ideal gas can be used to find the entropy change. For question 5 and 6, I have the same problem in both of these questions. When calculating the value of h and s in question 5, I need to interpolate the value for 70.11kPa because in cengel don’t have the data at that state. After few time of interpolation then I can solve the question. Hopefully I had interpolated the right data. Because of too stress with interpolation in question 5, so I decided to take 0.8MPa instead of interpolating for 0.77MPa. I’m sorry Prof but I really-really run off of time…
In conclusion, my basic of PCP is not strong enough. From the conversion unit until the refrigerant in thermodynamics have to be in my mind. So I have to study from the beginning again to make sure I familiar enough with all the real process. It will be a preparation for me to become a good future chemical engineering. And for Prof Kamarul ‘Asri thanks a lot coz being a good lecturer and also father to all of us. Hopefully we can see u again in future time. Pray for our success. 