Test Tube: Equipment Tab

TestTube.jpg
Variable Definitions, Ranges and Default Values

The following table shows the meaning of the variables appearing in this tab, as well as their default values and their generally acceptable range. Note that due to the manner by which the variables are used by the sizing and costing equations, the range of acceptable values may be further reduced.

Variable

Default Value

Range

 

◙ Number of Containers (per Unit or Skid/Rack)
The average number of containers that are active (in use) per equipment unit (or skid or rack). This is determined by dividing the total number of containers over all units by the number of units.

1

Positive Integer

● Total Container Volume (per Unit or Skid/Rack)
The product of the Number of Containers (per Unit or Skid/Rack) times the container Volume.

0.0 L

Positive

● Name (of Container)
The name of the selected container.

5 mL Test Tube

 

● Volume (of Container)
The unit volume of the selected container.

5 mL

Positive

● Minimum Allowable Working/Container Volume (of Container)
The minimum fill ratio of the selected container.

0.0 %

(0,100]

● Maximum Allowable Working/Container Volume (of Container)
The maximum fill ratio of the selected container.

90 %

(0,100]

○ Ignore Skid/Rack Sizing
Check this option to if you want to ignore the details of skid/rack sizing.

<Yes>

Yes/No

◙ Max Number of Compartments (Shelves)
The maximum number of compartments (or shelves) that the skid (or rack) is available for purchase on the market.

1

Positive Integer

◙ Number of Compartments (Shelves)
The number of compartments (or shelves) of the skid (or rack).

1

Positive Integer

◙ Number of Holders per Compartment (Shelf)
The number of holders per compartment (or shelf) of the skid (or rack).

1

Positive Integer

◙ Holding Capacity Per Holder
The maximum container Volume that each holder can hold.

1.0 L

Positive

○ Equipment Heat Capacity
The product of total mass times the specific heat capacity of the vessel.

0 kcal/°C

Positive.

 

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

Consumable

This equipment requires use of a ‘Test Tube’ consumable. A sample of such consumables is pre-defined in the database: 1 mL Test Tube, 5 mL Test Tube (default) 14 mL Test Tube, etc. More can be added easily by the user (see Disposable Generic Container Skid: Consumables Tab).

Sizing

For information on sizing of a Test Tube, see Disposable Generic Container Skid.

Costing

The equipment purchase cost of the built-in model is zero. The equipment purchase cost of a user-defined cost model is dependent upon the equipment’s total holding capacity. This is defined as the product of the Holding Capacity Per Holder times the Number of Holders Per Compartment times the Number of Compartments.

Other Variables

●      Equipment Heat Capacity; the product of equipment mass times its specific heat capacity. It is used by operations that are executed in the vessel and involve heating and/or cooling. If part of the heat exchange is directed to the vessel, then this variable is used to estimate heating/cooling losses.

For more information on this equipment, see Test Tube.

For information on the left-hand side variables and options, see Equipment Data Dialog: Equipment tab.