iapws 1.0.1

Python implementation of international-standard IAPWS-IF97 steam tables

Class to model a state for liquid water or steam with the Industrial Formulation IAPWS-IF97

Incoming properties:

• T, Temperature, K

• P, Pressure, MPa

• h, Specific enthalpy, kJ/kg

• s, Specific entropy, kJ/kg·K

• x, Quality

Definitions options:

• T, P (Not valid for two-phases region)

• P, h

• P, s

• h, s

• T, x (Only for two-phases region)

• P, x (Only for two-phases region)

Properties:

• P, Pressure, MPa

• T, Temperature, K

• g, Specific Gibbs free energy, kJ/kg

• a, Specific Helmholtz free energy, kJ/kg

• v, Specific volume, m³/kg

• rho, Density, kg/m³

• h, Specific enthalpy, kJ/kg

• u, Specific internal energy, kJ/kg

• s, Specific entropy, kJ/kg·K

• cp, Specific isobaric heat capacity, kJ/kg·K

• cv, Specific isochoric heat capacity, kJ/kg·K

• Z, Compression factor

• gamma, Isoentropic exponent

• alfav, Isobaric cubic expansion coefficient, 1/K

• kt, Isothermal compressibility, 1/MPa

• alfap, Relative pressure coefficient, 1/K

• betap, Isothermal stress coefficient, kg/m³

• joule, Joule-Thomson coefficient, K/MPa

• deltat, Isothermal throttling coefficient, kJ/kg·MPa

• region, Region

• w, Speed of sound, m/s

• mu, Dynamic viscosity, Pa·s

• nu, Kinematic viscosity, m²/s

• k, Thermal conductivity, W/m·K

• alfa, Thermal diffusivity, m²/s

• sigma, Surface tension, N/m

• epsilon, Dielectric constant

• n, Refractive index

• Pr, Prandtl number