Ultrafiltration (UF) Engineering
UF is the low-pressure membrane stage usually placed ahead of RO or NF. EngiMetric models the sizing and operating quantities that are defined by conservation and by the standard membrane identities — everything empirical (design flux, pressures, measured flux) is supplied by you.
Choose a calculation below. Each one runs an EngiMetric UF engine and reports its own validation; no design limit is assumed on your behalf.
UF membrane area
EngiMetric engineEvery value below is produced by the registered EngiMetric engine for this calculation. The Copilot never supplies engineering values.
Inputs the engine needs, and why
- Feed flow (m³/h) — Membrane area is sized from the flow that must pass through the membrane.
- Design flux — Membrane area is only defined against a flux basis, so the design flux must be supplied.
Calculation Details
- Engine
calculateUfMembraneArea- Calculation ID
uf.membrane_area- Outputs
- UF permeate flow (m³/h) · UF concentrate flow (m³/h) · Design flux (LMH)
UF transmembrane pressure
EngiMetric engineEvery value below is produced by the registered EngiMetric engine for this calculation. The Copilot never supplies engineering values.
Inputs the engine needs, and why
- Feed pressure — Transmembrane pressure needs the feed, concentrate and permeate pressures.
- Concentrate pressure — Transmembrane pressure needs the feed, concentrate and permeate pressures.
- Permeate pressure — Transmembrane pressure needs the feed, concentrate and permeate pressures.
Calculation Details
- Engine
calculateUfTmp- Calculation ID
uf.transmembrane_pressure- Outputs
- Transmembrane pressure (bar)
UF flux condition
EngiMetric engineEvery value below is produced by the registered EngiMetric engine for this calculation. The Copilot never supplies engineering values.
Inputs the engine needs, and why
- Design flux — Membrane area is only defined against a flux basis, so the design flux must be supplied.
- Current flux — The observed flux is the value being compared with the design basis.
Calculation Details
- Engine
calculateUfFluxCondition- Calculation ID
uf.flux_condition- Outputs
- Normalised flux (ratio)