Pressurization: Oper. Conds Tab

PressurizeOperConds.jpg
Variable Definitions, Ranges and Default Values

The following table shows a brief description of the variables appearing in this tab. The table also displays their default values and their generally acceptable range. Note that due to how the variables are used in the modeling equations, the range of acceptable values may be further reduced; for more details, see Pressurization: Modeling Assumptions & Constraints.

Variable

Default Value

Range

 

○ Pressurization Gas
Indicates the gaseous stock mixture or pure component that is selected as the pressurization gas. Click on the list box to bring up a list of registered stock mixtures or pure components in order to select one.

<none>

Any Gaseous Stock Mixture or Pure Component

○ Supply Temp. (oC)
The temperature of the pressurization gas in the vessel.

25.0

Positive

● Volume Consumption (L)
The volume of pressurization gas that is consumed for the operation (per cycle, per equipment unit).

0.0

Positive

● Mass Consumption (kg)
The mass of pressurization gas that is consumed for the operation (per cycle, per equipment unit).

0.0

Positive

● Initial System Pressure (bar)
The pressure of the vessel before the start of the operation.

1.01325

Positive

○ Final System Pressure (bar)
The pressure of the vessel after the end of the operation.

1.1

Positive

○ Setup Time (min)
The amount of time (per cycle) spent before each operation is carried in preparation for the actual execution of the operation. It may involve actions like cleaning, vacuuming, setting up of equipment, etc. which the user opted not to model explicitly.

0.0

Positive

○ Pressurization Time (min)
The actual duration of the operation.

360.0

Positive

Symbol Key: ○ User-specified value (always input); ● Calculated value (always output); ◙ Sometimes input, sometimes output

Specification Choices / Comments

The following list describes the available specification choices in this tab; for more details on how these are implemented, see Pressurization: Modeling Calculations.

•Source of Pressurization Gas...

The pressurization gas can be selected from the lists of registered pure components and stock mixtures.

•Consumption Volume/Mass...

The amount of gas required for pressurization is calculated assuming ideas gas conditions.