1. 3-6 Material Stream Property View
3-6
Conditions Page
The Conditions page displays all of the default stream information as it
is shown on the Material Streams tab of the Workbook view. The names
and current values for the following parameters are shown:
• Stream Name
• Vapour/Phase Fraction
• Temperature
• Pressure
• Molar Flow
• Mass Flow
• Std Ideal LiqVol Flow
• Molar Enthalpy
• Molar Entropy
• Heat Flow
• LiqVol Flow @ Std Cond
• Fluid Package
HYSYS uses degrees of freedom in combination with built-in
intelligence to automatically perform flash calculations. In order for a
stream to “flash”, the following information must be specified (either
from your specifications or as a result of other flowsheet calculations):
• Stream Composition
Two of the following properties must also be specified; at least one of the
specifications must be temperature or pressure:
• Temperature
• Pressure
• Vapour Fraction
• Entropy
• Enthalpy
If you specify a vapour fraction of 0 or 1, the stream is assumed to be at
the bubble point or dew point, respectively. You can also specify vapour
fractions between 0 and 1.
In the electrolyte system, the
Conditions page contains an
extra column. This column
displays the property
parameters of the stream
after electrolyte flash
calculations.
At least one of the
temperature or pressure
properties must be specified
for the material stream to
solve.
In the electrolyte system, the
entropy (S) is always a
calculated property.