Assalamualaikum and Salam 1 Malaysia…
First and foremost, I would like to express my thanks to Dr. Aznizam bin Abu Bakar for his guidance and advice in teaching this subject (PRINCIPLE OF CHEMICAL ENGINEERING). This semester only four chapter were covered which are Balances on Nonreactive Processes, Balances on Reactive Processes, The second law of Thermodynamics and Power and Refrigeration System.
Balances on Nonreactive Processes
This chapter presents on how to evaluate enthalpy change or internal energy change. Once these calculations have been performed, the energy balance can be solved as before. In this chapter, I learn how to construct hypothetical path. When a species passes from one state to another, enthalpy or internal energy surely will be changed. Enthalpy and internal energy depends on temperature and state of aggregation. Change on pressure does not affect the value of enthalpy and internal energy.
In order to calculate enthalpy at different temperature, we have to know the value of Cp (Heat Capacity). Cp already given in the reference book. However, Cp data for some compounds are absence and we have to estimate the value by using Koop’s Law. Moreover, this chapter also expose me the definition of latent heat and it can be estimate by using Trouton’s Rule, Chen’s Equation, Clapeyron Equation and Watson’s correlation. Psychometric chart or also known as humidity chart is used to determine and calculate the absolute humidity, dew point temperature, wet bulb temperature, relative humidity and humid volume.