Holding: Oper. Conds Tab

HoldOperConds.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

 

Holdup Time (min)
The duration of the operation.

15.0

Positive

Ignore Labor?
Check this box to ignore labor for this operation. This option is used only if the process time is set by a master-slave relationship.

Yes

Yes/No

Initial Temperature (oC)
The temperature of the contents at the beginning of the operation.

25.0

Positive

Final Temperature (oC)
The temperature of the contents at the end of the operation.

25.0

Positive

Ambient Temperature (oC)
The ambient temperature.

25.0

Positive

Temperature Change (oC)
The temperature change during the operation.

0.0

Positive

Temperature Change Rate (oC/min)
The temperature change rate during the operation.

0.0

Positive

Heat Loss/Gain Rate (Watt)
The rate at which heat is exchanged with the environment.

0.0

Positive

Overall UA (kcal/h-oC)
The product of overall heat transfer coefficient and heat transfer area.

1290.92

Positive

Heating Agent Name
Indicates the heating agent that is used by the operation if a heating agent is selected as the heat source. Click on the list box to bring up a list of available heating agents in order to select one.

<Steam>

Any Heating Agent

Inlet Temp. (oC)
The inlet temperature of the heating agent.

152.0

Positive

Outlet Temp. (oC)
The outlet temperature of the heating agent.

152.0

Positive

Rate (kg/h)
The mass flow rate of the heating 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.

90.0

[0,100)

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