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Steam Table Properties Calculator

Comprehensive water and steam property data based on IAPWS-97 formulation

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Steam Properties Calculator

Featured: IAPWS-97 based property calculations

Water Phase Diagram

The phase diagram shows the relationship between pressure and temperature for water. The critical point of water is at 373.946°C and 220.64 bar. Beyond this point, the distinction between liquid and gas phases disappears, forming a supercritical fluid.

The calculator uses the IAPWS-97 formulation which provides accurate thermodynamic properties across the entire range of industrial applications, from the triple point to 1000°C and 1000 bar.

Enter parameters and click "Calculate Properties" to see results

Common Thermodynamic Cycles

Rankine Cycle

The Rankine cycle is the fundamental operating cycle of all power plants where an operating fluid is continuously evaporated and condensed. It's the ideal cycle for vapor power plants.

Carnot Cycle

The Carnot cycle is the most efficient possible thermodynamic cycle for converting a given amount of thermal energy into work, or conversely, creating a temperature difference by doing work.

Regenerative Cycle

A regenerative cycle improves the efficiency of steam power plants by using feedwater heaters to preheat the water before it enters the boiler.

IAPWS-97 Formulation

International Standard for Water Properties

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. It replaces the previous IFC-67 formulation and is valid for:

  • Temperature range: 273.15 K (0°C) to 1073.15 K (800°C)
  • Pressure range: up to 100 MPa (1000 bar)
  • Special high-temperature region up to 2000°C

Key Properties Calculated

The formulation provides accurate calculations for all fundamental thermodynamic properties:

Basic Properties

  • Temperature (°C, K)
  • Pressure (bar, MPa)
  • Specific Volume (m³/kg)
  • Density (kg/m³)

Energy Properties

  • Specific Enthalpy (kJ/kg)
  • Specific Internal Energy (kJ/kg)
  • Specific Entropy (kJ/kg·K)
  • Specific Gibbs Energy (kJ/kg)

Derived Properties

  • Specific Heat Capacity (kJ/kg·K)
  • Speed of Sound (m/s)
  • Joule-Thomson Coefficient
  • Isentropic Exponent

Transport Properties

  • Dynamic Viscosity (Pa·s)
  • Kinematic Viscosity (m²/s)
  • Thermal Conductivity (W/m·K)
  • Prandtl Number

Phase Boundary Calculations

The formulation includes special equations for the saturation boundaries (liquid-vapor equilibrium), with high accuracy in the critical region. It provides:

  • Saturation temperature as a function of pressure
  • Saturation pressure as a function of temperature
  • Properties along the saturation boundaries
  • Quality (vapor fraction) calculations in the two-phase region