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 |
|
|
||
|
◙ Bulk Density (kg/m3) |
500 |
Positive |
|
○ Quantity Per Shipment (MT or m3) |
20.0 |
Positive |
|
○ Shipping Distance (km) |
0.0 |
Positive or Zero |
|
○ Fixed Cost ($/shipment) |
0.0 |
Positive or Zero |
|
○ Quantity Dependent Cost ($/MT or $/m3) |
40.0 |
Positive or Zero |
|
○ Quantity & Distance Dependent Cost ($/MT-km or $/m3-km) |
0.05 |
Positive or Zero |
Symbol Key: ○ User-specified value (always input); ● Calculated value (always output); ◙ Sometimes input, sometimes output
The following list describes the available specification choices in this tab; for more details on how these are implemented, see Transport Operations: Modeling Calculations.
•Cost / Quantity Basis options...
The bulk amount per shipment and the various unit costs can be based on mass (metric tons) or volume (m3) of bulk material. When volume is used as basis, the bulk density of the material is also required and it is either specified by the user or set equal to the feed stream’s density.
•Default Values...
The default values for quantity per shipment and the various unit costs correspond to transportation by truck. The default values of the same variables for other modes of transportation (e.g., train and sea) are different.