Centrifugation: Utilities Tab

CentrifugationUtilities.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:

Variable

Default Value

Range

 

○ Exit Temperature Set by User
Check this box to set the exit temperature.

No

Yes/No

◙ Exit Temperature (οC)
The temperature of the material at the end of the operation.

25.0

Positive

○ Heat Transfer Agent Name
Indicates the heat transfer agent used for the operation. Click on the list box to bring up a list of available heat transfer agents in order to select one.

Chilled Water

Agent Name

● Inlet Temp. (C)
The inlet temperature of the heat transfer agent.

5.0

Negative/Positive

● Outlet Temp. (C)
The outlet temperature of the heat transfer agent.

10.0

Negative/Positive

● Heating (kcal/h)
The heat transfer rate of the heating agent, if a heating agent is used

0.0

Positive

● Cooling (kcal/h)
The heat transfer rate of the cooling agent, if a cooling agent is used.

0.0

Positive

● Agent Rate (kg/h)
The mass flow rate of the heat transfer agent.

0.0

Positive

○ Heat Transfer Efficiency(%)
The heat transfer agent efficiency. If the value is lower than 100% then an increased heat transfer agent amount will be calculated by the program to satisfy the required duty.

100.0

[0,100)

○ Power Consumption Set by User
Check this box to set the power consumption.

No

Yes/No

○ Power Type
Indicates the power type that is used by the operation. Click on the list box to bring up a list of available power types in order to select one.

<Std Power>

Any Power Type

● Power (kW)
The total power consumed for the operation (per cycle).

0.0

Positive

○ Power Dissipation into Heat (%)
The percentage of total power consumed for this operation that turns into heat, thereby raising the temperature of the material contained in the equipment.

50

[0,100)

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

Specification Choices / Comments

Energy balances are done to calculate any heating/cooling requirement for maintaining the exit temperature; for more details, see Centrifugation: Modeling Calculations.