Thermodynamic Calculator

The thermodynamic calculator uses a range of published correlations to evaluate various fluid properties, for:

Pure water (the calculator acts like a set of steam tables).
H2O-NaCl (Brine)

Using the calculator

To open the calculator, go to GeoData Manager's home window and click Tools, then click Thermodynamic Calculator.
Based on impurites in the fluid, select the Fluid system to use from the drop-down list. For this tutorial, select H2O-NaCl.
Select the Calculation to perform from the drop-down list. The calculator will show information about the selected correlation and literature references if available. Select Density of Brine (Haas, 1970).
Enter the required data into the fields with white backgrounds:

Pressure: 50 bara

Temperature: 200 degrees C

Brine density: 2.0 wt%
Press Tab. The Calculate button is greyed out and will not work until you have entered all the required data and pressed Tab.
To close the calculator, click Close.

Error Checking

Some correlations are only valid over certain ranges of parameters. If the input parameters are out of range, or a problem has occured in the calculation then:

It will show an error message.
Usually it will show an result; do not use the result with any confidence.

For example in the calculation of brine density shown in the example the applicable temperature input range is given as 75 - 325 deg C. If a temperature input is specified outside the range a warning message is displayed:

Changing units

You can change units for any field before or after you enter a value. Right-click the field and click the new unit:

Options

Full Precision

The highlighted input or output value will be displayed in full precision. For example, select this when you will copy the result to clipboard.
The result will be displayed in GeoData Managers normal precision.

Pure Water Correlations available

The available correlations are:

Correlation	Input data required
Compressibility of Steam	Pressure, Temperature
Compressibility of Water	Pressure, Temperature
Density of Steam	Pressure, Temperature
Density of Water	Pressure, Temperature
Dynamic Viscosity of Steam	Pressure, Temperature
Dynamic Viscosity of Water	Pressure, Temperature
Enthalpy of Steam	Pressure, Temperature
Enthalpy of Water	Pressure, Temperature
Kinematic Viscosity of Steam	Pressure, Temperature
Kinematic Viscosity of Water	Pressure, Temperature
Saturation Pressure	Temperature
Saturation Temperature	Pressure
Surface Tension	Temperature

H2O-NaCl (Brine) Correlations available

The available correlations are:

Correlation	Input data required
Density of Brine (Haas,1970)	Pressure, Temperature,NaCl
Saturation Pressure of Brine (1976)	Temperature, NaCl

Introduction

Tutorials

Data types and nodes

Reference

Installing GeoData Manager