Continuous Crystallization: Evap. Data Tab

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

○ Consider Evaporation prior to Crystallization Check this box to specify evaporation data.	No	Yes/No
○ % Evaporated	0.0	0 – 100
○ Evaporation Temp. (°C)	100	Real
○ Evaporation Heat (kcal/kg)	539.608	Positive
○ Ref. Comp. Indicates the component of the feed stream for which reference evaporation temperature and heat are specified. Click on the list box to bring up a list of registered components in order to select one.	<None>	Any Pure Component
○ Heating Agent Name Indicates the heat transfer agent that is used by the operation. Click on the list box to bring up a list of available heat transfer agents in order to select one.	<Steam>	Any Heating Agent
● Inlet Temp. (^oC) The inlet temperature of the heat transfer agent.	152.0	Positive
● Outlet Temp. (^oC) The outlet temperature of the heat transfer agent.	152.0	Positive
● Rate (kg/h) The mass flow rate of the heat transfer agent.	0.0	Positive
○ Heat Transfer Efficiency(%) The heating agent consumption efficiency. Specify a value below 100% to account for heat losses to the surroundings when a heating agent is used.	100.0	[0,100)

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 Continuous Crystallization: Modeling Calculations.

•Consider Evaporation Prior to Crystallization...

The data in this tab is considered only if the ‘Consider Evaporation prior to Crystallization’ option is checked. Any material balance calculations for evaporation are done prior to crystallization calculations.