Flash Calculations Back to Main Tutorial
The following steps will guide you to do a flash
calculation using SRK equation of state.
You will work with screen 5A in the Volume
1.
Step 1: Go to the Volume 1 and Select Chapter 5
Step 2: Select “A. Bubble point; dew point, and flash calculations (SRK EOS)”
You should see screen 5A appears. There are 5 options: Bubble point at known
pressure and temperature, Dew point at known pressure and temperature, and
flash at specified pressure and temperature.
You can only select one option at a time. The default option is flash
calculation. Please notice that inputting gas composition is required. You can enter mole % or mole flow rate for
each component, depending on your Input
Mode (Preferences\ Input Mode).
Step 3: Specify the temperature and
pressure. Notice that you can change the
units of temperature and pressure.
Step 4: Input the Gas Compositions (mole%). The Total flow
rate is optional in this case. If you do not specify the total flow rate, 100 lbmole/hr will be used as the
default flow rate.
Step 5: Click the “Run” Button to start the flash
calculation.
*If you click the “Feed” button, GCAP displays the
information (Temperature, Pressure, gas composition in mole percent or gas mole
flow rate depending on input mode, and total flow rate if available) of the
feed stream in the latest flash calculation.
*If you click the “Vapor” button, GCAP displays the
information (T, P, gas composition in
mole percent or gas mole flow rate depending on input mode, and total flow rate
if available) of the vapor stream from the latest flash calculation.
*If you click the “Liquid” button, GCAP displays the
information (T, P, gas composition in
mole percent or gas mole flow rate depending on input mode, and total flow rate
if available) of the liquid stream from the latest flash calculation.