Frying: Oper. Conds 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

○ Recirculating Flowrate (kg/h)	0.0	Positive
○ Volume of Oil In the Fryer (m³)	1.0	Positive
● Turnover Time (h)	4.0	Positive
○ Inlet Temperature (°C)	165.0	Positive
◙ Min Outlet Temperature (°C)	110	Positive
◙ Outlet Temperature (°C)	130	Positive
● Heat Transfer Efficiency (%) The heat transfer efficiency of the operation.	100.0	(0,100)
○ Heating Agent Name Indicates the heating agent that is used for the operation. Click on the list box to bring up a list of available heating agents in order to select one.	<Steam (High P)>	Any Heating Agent
● Inlet Temp. (^oC) The inlet temperature of the heating agent.	242.0	Positive
● Outlet Temp. (^oC) The outlet temperature of the heating agent.	242.0	Positive
● Rate (kg/h) The mass flow rate of the heating 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)
○ 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
◙ Process Time (min) The actual duration of the operation (per cycle).	60.0	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
◙ Operating Throughput (kg/h)	0.0	Positive
○ Residence Time of Product In Fryer (s)	100.0	Positive
● Makeup Oil Inlet Stream Indicates the input port that is connected to the makeup oil inlet stream. If an input stream is already present at the selected port, then the button next to the selection is active. Click on the button to bring up the attached stream’s simulation dialog in order to provide its composition.	<None>	Dedicated Input Port
● Makeup Oil Flowrate (kg/h) The mass flow rate of the makeup oil stream.	0.0	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 Frying: Modeling Calculations.

•Duration...

The duration controls appear only if the procedure in batch mode. In Rating Mode, you have a choice to either set the process time (and the setup time) or to allow the process time to be specified (based on the throughput). In Design mode, you must specify the process time (and the setup time) in order for the program to calculate the rated throughput.