🌡️ Steam Table Calculator (IAPWS-IF97)
Calculate high-precision thermodynamic and transport properties of water and steam (liquid, vapor, mixture, supercritical) using the IAPWS-IF97 standard.
Tools
ASME / IAPWS-IF97 Standard
Select your known input pair (Temperature, Pressure, Quality, Enthalpy, or Entropy) to compute the exact thermodynamic state of water and trace the point on the Temperature-Entropy ($T$-$s$) diagram.
📝 Configuration
Equations are structured in 5 regions. Viscosity ($\mu$) and Thermal Conductivity ($k$) are solved via the latest IAPWS formulations.
Saturated Mix Formulae:
$$v = v_f + x(v_g - v_f)$$ $$h = h_f + x \cdot h_{fg}$$ $$s = s_f + x \cdot s_{fg}$$
📊 Results & Visualization
Configure input properties and click Calculate.
📘 Standard IAPWS-IF97 Formulation
Physical Range of Validity
The industrial standard IAPWS-IF97 covers thermodynamic water/steam states in the following ranges:
- Temperature: $0^\circ\text{C}$ to $800^\circ\text{C}$ (Region 5 extends up to $2000^\circ\text{C}$ but with specific bounds).
- Pressure: $0.611\text{ kPa}$ up to $100\text{ MPa}$ ($1000\text{ bar}$).
Calculations automatically transition equations of state depending on the region of the input parameters to maintain thermodynamic consistency.
Saturation Curve Calculations
Saturation temperatures and pressures are calculated using backward/auxiliary equations boundary fits. Transport properties like viscosity ($\mu$) and conductivity ($k$) are based on the latest IAPWS formulations including critical enhancement checks.