Steam Properties
Enter state properties and click Calculate to see steam properties.
Water Phase Regions
Compressed Liquid
P > Psat at given T, or T < Tsat at given P
Two-Phase (Wet Steam)
Mixture of saturated liquid and vapor (0 < x < 1)
Superheated Vapor
T > Tsat at given P
Supercritical
P > 22.064 MPa and T > 373.95°C
Useful Relations
Quality (x)
x = (h - hf) / hfg
hfg = hg - hf
Specific Volume
v = vf + x·vfg
For two-phase region
Internal Energy
u = h - Pv
From enthalpy definition
Ideal Gas (approx.)
Pv = RT (superheated region)
R = 0.4615 kJ/(kg·K)
Presets
Calculation Type
Input Parameters
1 MPa = 10 bar = 145 psi
Reference
Critical Point: 22.064 MPa, 373.95°C
Triple Point: 0.000612 MPa, 0.01°C
Normal Boiling: 0.101325 MPa, 100°C