Assamualaikum to my lecturer for Principle Elementry Process 2(Energy Balance) subject, Prof. Kamarul Asri' Bin Ibrahim. I wrote this reclection journal regarding the test that I attended for energy balance subject.
First of all,I want to talk about 1st question in the test. The question is about to create a hypothetical proces path and calculate the specific enthalphy of toluene(s) relative to toluene(g) . For (a) we need to explain why we need to construct the hypothetical process path. For this question I did it using my own words because I do not clear about real objective of the hypothetical path. For (b), we need to construct the hyphothetical path, the mistake occur when I am not creating the real hypothetical path after I created all the path to determine the energy required.
For the second question, it is the question that I answered it very messy and I found it as the hardest question of all. For this question, I get zero mark.For (a), the question ask to find temperature of water outlet. This is the question that makes me hard to find other answer for other question because the answer is in table b7 but I do not know that the answer is just in the table. For (b),to construct inlet-outlet enthalpy table and calculate the mass of steam fed, as the first question I cannot get, I started to confuse and I just calculate here and there the value and forgot to construct the energy balance table.
Next, I started to answer queston 3 and I found it hard also as Iget confuse about the mass balance calculationThe fourth question ask us to use psycrometric chart to answer the question. So far, this is the question that I answer it correctly. The things I do are I take out the moisture content and the humid volume only from the chart. After that, I want to do the mass balance and find the dry air volume and water loss in the cereal.Then, after Ifound all of that, Ifinally get the inlet humid air volume.
In a nutshell, this is all of my reflection for Test I, Principle Elementry Process(Energy Balance) and I hope that I will get a better result in the next test and final exam.