ASTEM97 - IAPWS IF97 Properties of Water and Steam for Industrial Use
Copyright Edward D. Throm (C) 2002-2005
 

Parameter  SI Units English Units
1 Pressure  Pa psia
2 Temperature  K deg F
3 Quality  --- ---
4 Density  kg/m^3 lbm/ft^3
5 Specific Volume  m^3/kg  ft^3/lbm
6 Specific Internal Energy  kJ/kg BTU/lbm
7 Specific Enthalpy  kJ/kg BTU/lbm
8 Specific Entropy  kJ/kg-K BTU/lbm-F
9 Gibbs Free Energy  kJ/kg  BTU/lbm
10 Helmholtz Free Energy  kJ/kg  BTU/lbm
11 Compressibility Factor  ---  ---
12 Specific Heat At P=const  kJ/kg-K  BTU/lbm-F
13 Specific Heat at v=const  kJ/kg-K BTU/lbm-F
14 Sonic Velocity  m/sec ft/sec
15 dv/dp at T=const  m^3/kg-Pa ft^3/lbm-psi
16 dv/dt at p=const  m^3/kg-K  ft^3/lbm-F
17 dp/dv at T=const  Pa-kg/m^3  psi-lbm/ft^3
18 dp/dt at v=const  Pa/K psi/F
19 Coef of Thermal Expansion  1/K 1/F
20 Isothermal Compressibility  1/Pa  1/psi
21 Isentropic Exponent  --- ---
22 Prandtl Number  --- ---
23 Dynamic Viscosity  micro kg/m-sec lbm/ft-sec
24 Kinematic Viscosity  micro m^2/sec ft^2/sec
25* Thermal Conductivity (IND)  W/m-K BTU/hr-ft-F
26* Thermal Conductivity (GSI)  W/m-K  BTU/hr-ft-F
27 Refractive Index  --- ---
28 Static Dielectric Constant  --- ---
29 Surface Tension  milli N/m  lbf/ft
30 Joule-Thomson Coef  K/Pa  F/psi
31 Isothermal Joule-Thom Coef  kJ/kg-Pa BTU/lbm-psi
* - IND - recommended for industrial use; GSI - recommended for general and scientific use

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