PO.EoS.Pb.PR Function
Description:
Calculates bubble point pressure using Peng-Robinson EoS, [Pa].
Excel Function Syntax:
=PO.EoS.Pb.PR(T, zi, props, kij)
Parameters:
| Parameter | Description |
|---|---|
| T | Temperature, [K]. |
| zi | Mole fractions (N×1 range, must sum to 1.0). |
| props | Component properties (N×4 range: Tc, Pc, omega, Mw). |
| kij | Binary interaction parameter matrix (N×N). Omit in formula for default zeros. |
Used in Blueprints
Bubble & Dew Point
Calculates bubble point and dew point (pressure and temperature) for a ternary hydrocarbon mixture using Peng-Robinson EoS. - **Bubble point**: first vapor bubble forms from liquid (V = 0) - **Dew point**: first liquid droplet forms from vapor (V = 1) Uses the property-array workflow: build property table, then pass `zi` and `props` to saturation functions.
EoS Tuning Setup
Framework for EoS tuning by comparing calculated vs. observed bubble point pressures. The property table uses editable cells for Tc, Pc, omega, and Mw, enabling manual adjustment or Solver-based regression.