Week 1 to Week 4(Non-reactive process)
In this chapter (nonreactive chemical process), I learnt about enthalpy change and also internal energy in the chemical process. The value for enthalpy n internal energy we can find them in the steam table. Pressure and temperature are affecting the value of steam table. Before we solved the chemical process problem, we have to determine its reference state which can find it in table B2 and B8. Then, we have find its energy change in the process which there are two ways to determine its energy change by heat capacities estimation (integration) and enthalpy table (B8) which can find the answer straight away. Last but not least, I learnt about hypothetical path which it like two ways to find the targets substance. Estimation of Latent Heat Delta Hv can be determined by using Trouton's Rule. While, estimation of heat capacity of liquid and solid by using Kopp's Rule. The heat capacity of atomic is available in Table B10.
There are several procedures need to follow in energy balance calculation:
a) Basis (mass or mole as a basis)
b) Mass/Mole Balance (* remember mass balance info)
c) Reference State: Substance (phase,temperature,pressure) (* use at inlet or outlet as ref state)(*based on tables B8 n B3)
d) Preparation of Inlet-Outlet Enthalpy Table
e) Determination of Enthalpy, from Table B5,B6,B7,B8 or using Heat capacity equation given in Table B2.
f) Calculation of Enthalpy: Hypothetical Process Path must be sketched for phase changes or multiphase except for water or steam.
g) Calculation Heat, Q = nH (out) - nH(in), unit kJ/s (kW)-Inlet-Outlet Enthalpy Table must be referred for convenience.
h) Sometime, from Q (given in question or adiabatic condition), the unknown mass or mole flow rate can also be calculated.
i) Box for final Numerical Answer
Week 5 to Week 7 (nonreactive chemical process)
Within these two weeks, I learnt about pshychometric chart. There are several characteristics of this chart:
a) Dry bulb temperature ( x-axis)
b) Absolute humidity (y-axis, moisture content, ha kg H2O (v)/kg Dry air
c) Relative humidity (hr) and saturation curve (hr=100%)
d) Dew point (using constant pressure line-horizontal and saturation curve)
e) Wet bulb temperature (twb)
f) Humid volume (kg HA/kg DA)
g) Enthalpy (using adiabatic line or wet temperature line)
f) Enthalpy deviation