Engineering tools
Reference calculations process engineers reach for. Each runs entirely in your browser and names the method behind it, with nothing to install and no sign-up. They are for screening and training, not for design of record.
- 01Steam tablesIAPWS-IF97Saturation properties, and the state of compressed water or superheated steam at a given temperature and pressure.Open
- 02Combustion and flue gasExact stoichiometryPick a fuel and set the air. Get flue gas O₂ and CO₂, excess air, the full flue gas make up and an ideal adiabatic flame temperature.Open
- 03PsychrometricsASHRAE, Hyland and WexlerDry bulb plus one of relative humidity, wet bulb or dew point gives the full moist air state, with pressure set by altitude.Open
- 04Gas water contentBukacekSaturated water content and water dew point of lean sweet natural gas, with a warning when you leave the correlation's range.Open
- 05Gas Z-factorStanding and Katz via DAKCompressibility of natural gas from gas gravity or composition, with the Wichert and Aziz correction for sour gas.Open
- 06Vapor-liquid equilibriumPeng-RobinsonPhase diagrams for a pair, a PT flash and the phase envelope, for hydrocarbon, CO₂, N₂ and H₂S mixtures.Open
- 07Oil and water solubilityCorrelations, measured dataWater dissolved in hydrocarbon, hydrocarbon dissolved in water, and whether free water drops out when the oil cools.Open
- 08Loop tuningFOPDT and PIDA single PID loop on a flow, pressure, temperature or level process. Tune it by Ziegler-Nichols, Cohen-Coon or SIMC, then step the setpoint and read the trend.Open
Built by Empira
These calculators come out of our operator training simulators. Each is a working model of your own unit, with your tag names and your DCS graphics, that operators can run, break and recover.
See what we build