Membrane Distillation Costing Method
Costing Method Parameters
The following parameters are constructed for the unit on the FlowsheetCostingBlock (e.g., m.fs.costing.membrane_distillation) when applying the cost_membrane_distillation costing method in the watertap_costing_package:
Description |
Symbol |
Parameter Name |
Default Value |
Units |
|---|---|---|---|---|
Membrane replacement factor |
\(f_{replace}\) |
|
0.2 |
\(\text{yr}^{-1}\) |
Membrane cost |
\(C_{mem}\) |
|
56 |
\(\text{USD}_{2018}\text{/m}^2\) |
Costing Method Variables
The following variables are constructed on the unit block (e.g., m.fs.unit.costing) when applying the cost_membrane_distillation costing method in the watertap_costing_package:
Description |
Symbol |
Variable Name |
Index |
Units |
|---|---|---|---|---|
Membrane area |
\(A_{mem}\) |
|
None |
\(\text{m}^2\) |
Capital Cost Calculations
The capital cost is dependent upon the membrane area, \(A_{mem}\), as shown in the equations below.
\[C_{cap,tot} = A_{mem} * C_{mem}\]
Operating Cost Calculations
The fixed operating cost is proportional to the membrane capital cost, adjusted by the membrane replacement factor.
\[C_{op,tot} = f_{replace} * C_{mem} * A_{mem}\]
Code Documentation
References
Shamlou, E., Vidic, R., & Khanna, V. (2022). Optimization-based modeling and economic comparison of membrane distillation configurations for application in shale gas produced water treatment. Desalination, 526, 115513.