Steam Table Calculator
Property Diagrams
IAPWS-IF97 Formulas Used
This calculator implements the International Association for the Properties of Water and Steam Industrial Formulation 1997 (IAPWS-IF97).
Region 1 (Liquid Phase)
Fundamental equation: γ(π,τ) where π = p/p*, τ = T*/T
p* = 16.53 MPa, T* = 1386 K
Region 2 (Vapor Phase)
Fundamental equation: γ°(π,τ) + γʳ(π,τ)
p* = 1 MPa, T* = 540 K
Region 3 (Critical Region)
Fundamental equation: φ(δ,τ) where δ = ρ/ρ*, τ = T*/T
ρ* = 322 kg/m³, T* = 647.096 K
Region 4 (Saturation Curve)
Saturation-pressure equation: pₛ(T)
Saturation-temperature equation: Tₛ(p)
About Steam Tables
Steam tables are essential tools in thermodynamics and engineering for determining the properties of water and steam under various conditions.
Key Properties
- Specific Volume (v): Volume per unit mass (m³/kg)
- Internal Energy (u): Energy due to molecular motion (kJ/kg)
- Enthalpy (h): u + pv (kJ/kg)
- Entropy (s): Measure of energy unavailability (kJ/kg·K)
Common States
- Saturated Liquid (f): Liquid at boiling point
- Saturated Vapor (g): Vapor at condensation point
- Superheated Vapor: Vapor above saturation temperature
- Compressed Liquid: Liquid below saturation temperature but under pressure