SRK + Huron-Vidal, NeqSim parameters (Gᴱ mixing) property package

Huron-Vidal on SRK driven by parameters regressed FOR this rule at infinite pressure (Equinor NeqSim, Apache-2.0) rather than by the bundled low-pressure NRTL binaries. Measured on 9 binaries / 281 measured points from the NIST ThermoML corpus, it beats plain SRK on 7 of 9 but srk-mhv1 still wins 6 of 9 overall — so this is NOT a general upgrade. Its distinctive value is the pairs where the NRTL table has no fitted binary and MHV1 silently degrades to van der Waals mixing: on CO2/methanol (61 points) it gives AAD 0.0048 against 0.0084 for both plain SRK and MHV1. Reach for it on acid-gas and light-hydrocarbon/polar-solvent systems; prefer srk-mhv1 otherwise.

Flowsheets that use it