Membrane Experimental Lab
Calibrate membrane transport properties from pressure-decay experiments, then use them in the Scenario → Filter workflow.
Engineering estimates only — not safety certification or code compliance. Results must be independently validated by a qualified engineer.
1
Select Membrane / Filter
No filters in this project. Add one in the Filter Catalog, or proceed with an ad-hoc experiment.
2
Define Experiment
Upstream pressure decay — fit permeance/permeability from pressure vs time.
Step 2: Define Experiment
Chamber geometry, conditions, and the transport model to fit.
Geometry (SI)
Conditions
Transport Model
3
Measurements
Step 3: Measurements
Enter pressure-decay data (time s, pressure Pa). Raw data is never overwritten.
| Time (s) | Pressure (Pa) |
|---|
0 points
4–6
Run Fit
Add at least 2 measurement points.
Surrogate Translation Method 1: Experimental Ratio (He → H₂)
Derive an experimental He→H₂ ratio from paired membrane measurements, then translate new He measurements to H₂. Results are labeled MODEL_TRANSLATED — never directly measured.
At least 2 calibrated profiles (1 He + 1 H₂) are needed. Calibrate experiments above first.
Surrogate Translation Method 2: Solution-Diffusion (He → H₂)
Calculate species permeabilities from experimentally derived diffusivity (D) and solubility (S): P = D × S, then R_SD = (D_H₂ × S_H₂) / (D_He × S_He). Requires D and S profiles from time-lag analysis.
At least 4 calibrated profiles are needed (He D, He S, H₂ D, H₂ S). Use the Time-Lag Permeation experiment type above to derive D and S, then save them as calibrated profiles with transport_model='diffusivity' or 'solubility'.