modelMembraneMassTransfer
model for mass transfer through membrane in
quasi-counter flow arrangement
Information
This model calculates the locally distributed mass transfer through a thin membrane. The model is based on the Solution-Diffusion model. It uses the permeability to describe the process of sorption, diffusion and desorption of the water vapour. For detailed information see [1].
References
[1]: Koester, S.; Roghmans, F.; Wessling, M.: Water vapor permeance: The interplay of feed and permeate activity ; Journal of Membrane Science; Vol. 485 (2015) pp. 69-78
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | n | 2 | Segmentation of membrane |
| Real | nParallel | number of parallel air ducts | |
| Modelica.Units.SI.Length | lengthMem | length of membrane in flow direction | |
| Modelica.Units.SI.Length | widthMem | width of membrane | |
| Modelica.Units.SI.Length | thicknessMem | thickness of membrane | |
| Modelica.Units.SI.Density | rhoMem | density of membrane | |
| Modelica.Units.SI.Area | areaMem | lengthMem*widthMem*nParallel | surface area of membrane |
| Modelica.Units.SI.PartialPressure | p_start | start value for mean partial pressure at membrane's surfaces | |
| Modelica.Units.SI.PartialPressure | dp_start | start value for partial pressure difference between membrane's surfaces |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Real | perMem | membrane's permeability in Barrer | |
| Real | coeCroCous | coefficient for mass transfer reduction due to cross-flow portion | |
| Utilities.MassTransfer.MassPort | massPorts_a | mass port to component boundary | |
| Utilities.MassTransfer.MassPort | massPorts_b | mass port to component boundary |
Revisions
- November 20, 2018, by Martin Kremer:
Changing mass transfer calculation: Now using permeability and thickness of membrane instead of permeance. - August 21, 2018, by Martin Kremer:
First implementation.