MA Flow-Through: Oper. Conds Tab

This tab appears on the interface dialog of the the following operation:

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:

Variable	Default Value	Range

○ Key Component (for Loading Capacity Specification) Indicates the reference component used to set a membrane loading capacity. Click on the list box to bring up a list of registered components in order to select a valid component of the feed stream. Used only if the loading capacity specification option is selected.	<None>	Any Comp.
◙ Membrane Capacity Per Area (kg/m²) If the membrane’s loading capacity is set, then this value corresponds to the membrane’s loading capacity for a selected key component (the maximum inlet mass of a key component that can be processed by the membrane) per membrane area. If the membrane’s binding capacity is set, then this value corresponds to the membrane’s total binding capacity (the maximum mass that can bind to the membrane) per membrane area.	0.0	Positive
◙ Membrane Capacity Per Volume (g/L) If the membrane’s loading capacity is set, then this value corresponds to the membrane’s loading capacity for a selected key component (the maximum inlet mass of a key component that can be processed by the membrane) per membrane volume. If the membrane’s binding capacity is set, then this value corresponds to the membrane’s total binding capacity (the maximum mass that can bind to the membrane) per membrane volume.	8000.0	Positive
● Capacity Utilization (%) The percentage of the membrane’s capacity that is utilized by this operation.	100.0	0 - 100
◙ Linear Velocity (cm/h) The linear velocity of the feed in the membrane.	0.0	Positive
◙ Absolute Flowrate (L/h) The volumetric flowrate of the feed in the membrane.	0.0	Positive
◙ Relative Flowrate (MV/min) The volumetric flowrate of the feed in the membrane expressed as number of membrane volumes per time unit.	30.0	Positive
● Absolute Loading Volume (per Cycle, per Unit) (L) The loading volume per cycle and per equipment unit.	0.0	Positive
● Relative Loading Volume (per Cycle, per Unit) (MV) The loading volume per cycle and per equipment unit, expressed as number of membrane volumes.	0.0	Positive
○ Retained % The percentage of inlet mass that is retained in the membrane for each component.	0.0	0 – 100
● Retained Amt (kg) The retained mass in the membrane for each component.	0.0	Positive
○ Ignore in Sizing? This option is shown next to each component only if the ‘Set Total Binding Capacity’ option is selected. Check the box next to a component to ignore the corresponding retained % in equipment sizing calculations.	No	Yes/No

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 MA Flow-Through: Modeling Calculations.

•If the ‘Set Loading Capacity of <Component>’ option is selected...

You must select a key component and specify the membrane’s loading capacity with respect to that component, either per membrane area or volume.

•If the ‘Set Total Binding Capacity’ option is set...

You must specify the mebrane’s total binding capacity per membrane area or volume. Optionally, you may ignore a component from equipment sizing calculations by checking the ‘Ignore in Sizing?’ box next to that component.

•If the ‘Set Capacity Per Area’ option is set...

You must specify the membrane capacity per membrane area. The program will calculate the respective membrane capacity per membrane volume.

•If the ‘Set Capacity Per Volume’ option is set...

You must specify the membrane capacity per membrane volume. The program will calculate the respective membrane capacity per membrane area.

•If the Loading Flowrate is set to ‘Linear Velocity’...

You must specify the linear velocity of the feed stream. The program will calculate the corresponding absolute flowrate and relative flowrate values.

•If the Loading Flowrate is set to ‘Absolute Flowrate’...

You must specify the absolute flowrate of the feed stream. The program will calculate the corresponding linear velocity and relative flowrate values.

•If the Loading Flowrate is set to ‘Relative Flowrate’...

You must specify the relative flowrate of the feed stream. The program will calculate the corresponding linear velocity and absolute flowrate values.