IAPWS-97 based property calculations for water and steam
Select input type and enter known parameters
Water phase diagram showing current state point
Water Phase Diagram • Critical Point: 373.95°C, 220.64 bar
Thermodynamic properties for the specified state point
Enter parameters and click "Calculate Properties" to see results
Analyze common thermodynamic cycles
The fundamental operating cycle of all power plants where an operating fluid is continuously evaporated and condensed.
The most efficient possible thermodynamic cycle for converting thermal energy into work.
Improves efficiency of steam power plants by using feedwater heaters to preheat water.
Increases efficiency by reheating steam between turbine stages to reduce moisture content.
The IAPWS-97 formulation (International Association for the Properties of Water and Steam) provides the most accurate correlations for the thermodynamic properties of water and steam.
The formulation includes special equations for the saturation boundaries (liquid-vapor equilibrium), with high accuracy in the critical region.
Steam tables provide thermodynamic properties of water and steam under various conditions of pressure and temperature. These properties are essential for engineering calculations in power generation, HVAC, and process industries.
Where h is specific enthalpy (kJ/kg), u is specific internal energy (kJ/kg), P is pressure (kPa), and v is specific volume (m³/kg).
Water can exist in different phases depending on pressure and temperature:
Adiabatic flame temperature and products
Ideal and real gas calculations
Efficiency and performance calculations