Continuous Stoichiometric Photobioreaction: Oper. Conds Tab

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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

 

◙ Final Temperature (oC)
The final temperature of vessel contents after the end of the operation.

37.0

Positive

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

0.0

Positive

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

0.0

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.

<None>

Any Heat Transfer Agent

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

0.0

Positive

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

0.0

Positive

● 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)

○ Gaseous Components Available to React
Check this box to consider gaseous components in reactions.

Yes

Yes/No

○ Simulate a Split After the Reaction
Check this box to enable split after reaction.

No

Yes/No

○ Pressure Set by User
Check this box to set the pressure.

No

Yes/No

◙ Pressure (atm)
The operating pressure.

1.0

Positive

○ 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

◙ Specific Power (Per Volume) (W/m3)
The ratio of the total power consumed for this operation (per cycle) divided by the total working volume of material.

1.0

Positive

◙ Total Power (W)
The total power consumed for this operation (per cycle).

0.0

Positive

◙ Power Per Unit (W)
The ratio of the total power consumed for this operation (per cycle) divided by the number of equipment units.

0.0

Positive

○ Power Dissipation to 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.

100.0

[0,100]

○ Use Gas Supply
Check this box to specify additional gas supply streams.

Yes

Yes/No

○ Gas Supply Stream
Indicates the input port that is connected to the gas supply 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>

Any Input Port

◙ Gas Supply Rate (VVM)
Specify the volume of gas supplied through the gas supply stream per working volume of liquid and per minute.

0.03

Positive

○ Use Secondary Gas Supply
Check this box to use secondary gas supply.

No

Yes/No

○ Secondary Gas Supply Stream
Indicates the input port that is connected to the secondary gas supply 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>

Any Input Port

◙ Secondary (Gas Supply) Rate (VVM)
Specify the volume of gas supplied through the secondary gas supply stream per working volume of liquid and per minute.

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 Continuous Stoichiometric Photobioreaction: Modeling Calculations.

•Gaseous Components Available to React...

If you don’t check the option ‘Gaseous Components Available to React’, then only the liquid components will be considered for the reaction.

•Simulate a Split After the Reaction...

If you check the option ‘Simulate a Split After the Reaction’, then the Split tab becomes available. This tab allows you to specify either total flow or specific component splits to the various streams exiting the vessel.

•Pressure...

The pressure of the system can be either set by the user or assumed equal to the ambient pressure.

•Gas supply rate...

VVM stands for volume of gas per volume of liquid and per minute. When the ‘Set by User’ option is selected, the program adjusts the flowrate of the gas supply stream to correspond to the specified VVM value. When the ‘Calculated Based on Gas Supply Stream Flow’ option is selected, the program simply calculates the VVM value that corresponds to the specified gas supply stream’s flowrate.