Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Water - Thermophysical Properties

Thermal properties of water at different temperatures like density, freezing temperature, boiling temperature, latent heat of melting, latent heat of evaporation, critical temperature and more.

Sponsored Links

Thermodynamic properties of water:

  • Boiling temperature (at 101.325 kPa):     99.974 °C = 211.953 °F
  • Bulk modulus elasticity:                            2.15 x 109 Pa or N/m2
  • Critical temperature:                                 373.946 °C = 705.103 °F
  • Critical pressure:                                      217.7 atm = 220.6 bar = 22.06 MPa (MN/m2) = 3200 psi (=lbf/in2)
  • Critical density:                                         0.322 g/cm3 = 0.62478 slug/ft3 = 20.1018 lbm/ft3
  • Ionization constant, pKw (at 25°C):          13.995    
  • Latent heat of melting:                             334 kJ/kg = 144 Btu(IT)/lb
  • Latent heat of evaporation(at 100°C):     40.657 kJ/mol = 2256 kJ/kg = 970 Btu(IT)/lb
  • Maximum density (at 4 oC):                      999.975 kg/m = 1.9403 slug/ft3 = 8.34519 lbm/gal(US)
  • Melting temperature (at 101.325 kPa):     0 °C = 32°F
  • Molar mass:                                             18.01527 g/mol
  • pH (at 25°C):                                            6.9976
  • Specific heat (Cp) water (at 15°C/60°F):  4.187 kJ/kgK = 1.001 Btu(IT)/(lbm °F) or kcal/(kg K)
  • Specific heat ice:                                      2.108 kJ/kgK = 0.5035 Btu(IT)/(lbm °F) or kcal/(kg K)
  • Specific heat water vapor:                        1.996 kJ/kgK =0.4767 Btu(IT)/(lbm °F) or kcal/(kg K)
  • Specific Weight (at 4 oC):                         9.806 kN/m3 = 62.43 lbf/ft3
  • Thermal expansion from 4 oC to 100 oC: 4.2x10-2 (Note! - volumetric temperature expansion of water is not linear with temperature)
  • Triple point pressure:                               0.00604 atm = 0.00612 bar = 611.657 Pa = 0.08871 psi (=lbf/in2)
  • Triple point temperature:                          0.01 °C = 32.02 °F

Follow the links below to get values for the listed properties of liquid water at varying pressure and temperature:

For each topic, there are figures and tables showing the variations in properties with temperature. Calculators giving the properties at specified temperatures are also available. All properties are given in both SI and imperial units.

See also more about atmospheric pressure, and STP - Standard Temperature and Pressure & NTP - Normal Temperature and Pressure,
as well as Thermophysical properties of: Acetone, Acetylene, Air, Ammonia, Argon, Benzene, Butane, Carbon dioxide, Carbon monoxide, Ethane, Ethanol, Ethylene, Helium, Hydrogen, Hydrogen sulfide, Methane, Methanol, Nitrogen, Oxygen, Pentane, Propane, Toluene and Heavy water, D2O.

Sponsored Links

Related Topics

Related Documents

Sponsored Links

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate
About the Engineering ToolBox!

Privacy

We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.

Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.

Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.

AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.

Citation

This page can be cited as

  • Engineering ToolBox, (2003). Water - Thermophysical Properties. [online] Available at: https://www.engineeringtoolbox.com/water-thermal-properties-d_162.html [Accessed Day Mo. Year].

Modify access date.

. .

close

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

3 30

Sponsored Links
.