Water - Thermal Conductivity vs. Temperature
Figures and tables showing thermal conductivity of water (liquid and gas phase) with varying temperature and pressure, SI and Imperial units.
Thermal conductivity is a material property that describes ability to conduct heat. Thermal conductivity can be defined as
"the quantity of heat transmitted through a unit thickness of a material - in a direction normal to a surface of unit area - due to a unit temperature gradient under steady state conditions"
Thermal conductivity unit converter
The thermal conductivity of water depends on temperature and pressure as shown in the figures and tables below:
See also other properties of Water at varying temperature and pressure: Boiling points at high pressure, Boiling points at vacuum pressure, Density and specific weight, Dynamic and kinematic viscosity, Enthalpy and entropy, Heat of vaporization, Ionization Constant, pKw, of normal and heavy water, Melting points at high pressure, Prandtl number, Properties at Gas-Liquid Equilibrium Conditions, Saturation pressure, Specific gravity, Specific heat (heat capacity), Specific volume, Thermal diffusivity and Vapour pressure at gas-liquid equilibrium, and Thermophysical properties at standard conditions,
as well as thermal conductivity of air, ammonia, butane, carbon dioxide, ethylene, hydrogen, methane, nitrogen and propane. For thermal conductivity of construction materials, see related documents at the bottom of the page.
Thermal conductivity of water at given temperatures (°C) and 1 bara:
State of water | Temperature | Thermal conductivity | ||
[°C] | [mW/m K] | [kcal(IT)/(h m K)] | [Btu(IT)/(h ft °F)] | |
Liquid | 0.01 | 555.75 | 0.4779 | 0.3211 |
10 | 578.64 | 0.4975 | 0.3343 | |
20 | 598.03 | 0.5142 | 0.3455 | |
30 | 614.50 | 0.5284 | 0.3551 | |
40 | 628.56 | 0.5405 | 0.3632 | |
50 | 640.60 | 0.5508 | 0.3701 | |
60 | 650.91 | 0.5597 | 0.3761 | |
70 | 659.69 | 0.5672 | 0.3812 | |
80 | 667.02 | 0.5735 | 0.3854 | |
90 | 672.88 | 0.5786 | 0.3888 | |
99.6 | 677.03 | 0.5821 | 0.3912 | |
Gas | 100 | 24.57 | 0.0211 | 0.0142 |
125 | 26.66 | 0.0229 | 0.0154 | |
150 | 28.83 | 0.0248 | 0.0167 | |
175 | 31.09 | 0.0267 | 0.0180 | |
200 | 33.43 | 0.0287 | 0.0193 | |
225 | 35.85 | 0.0308 | 0.0207 | |
250 | 38.34 | 0.0330 | 0.0222 | |
275 | 40.91 | 0.0352 | 0.0236 | |
300 | 43.53 | 0.0374 | 0.0252 | |
350 | 48.98 | 0.0421 | 0.0283 | |
400 | 54.65 | 0.0470 | 0.0316 | |
450 | 60.52 | 0.0520 | 0.0350 | |
500 | 66.58 | 0.0573 | 0.0385 | |
550 | 72.81 | 0.0626 | 0.0421 | |
600 | 79.17 | 0.0681 | 0.0457 | |
700 | 92.28 | 0.0794 | 0.0533 | |
800 | 105.81 | 0.0910 | 0.0611 | |
900 | 119.67 | 0.1029 | 0.0691 |
Back to top
Thermal conductivity of water at given temperatures (°F) and 14.5 psia:
State of water | Temperature | Thermal conductivity | |||
[°F] | [Btu(IT)/(h ft °F)] | [Btu(IT) in/(h ft2 °F)] | [mW/m K] | [x 10-3 cal(IT)/(s cm2 K)] | |
Liquid | 32 | 0.3211 | 3.853 | 555.73 | 1.327 |
40 | 0.3273 | 3.927 | 566.39 | 1.353 | |
60 | 0.3408 | 4.089 | 589.80 | 1.409 | |
80 | 0.3520 | 4.225 | 609.30 | 1.455 | |
100 | 0.3615 | 4.338 | 625.62 | 1.494 | |
120 | 0.3694 | 4.433 | 639.35 | 1.527 | |
140 | 0.3761 | 4.513 | 650.91 | 1.555 | |
160 | 0.3817 | 4.580 | 660.57 | 1.578 | |
180 | 0.3862 | 4.635 | 668.45 | 1.597 | |
200 | 0.3897 | 4.677 | 674.49 | 1.611 | |
211.3 | 0.3912 | 4.694 | 677.03 | 1.617 | |
Gas | 212 | 0.0142 | 0.170 | 24.57 | 0.059 |
250 | 0.0152 | 0.183 | 26.33 | 0.063 | |
300 | 0.0166 | 0.199 | 28.73 | 0.069 | |
350 | 0.0181 | 0.217 | 31.25 | 0.075 | |
400 | 0.0196 | 0.235 | 33.86 | 0.081 | |
450 | 0.0211 | 0.254 | 36.56 | 0.087 | |
550 | 0.0244 | 0.293 | 42.24 | 0.101 | |
600 | 0.0261 | 0.313 | 45.20 | 0.108 | |
650 | 0.0279 | 0.334 | 48.24 | 0.115 | |
700 | 0.0297 | 0.356 | 51.35 | 0.123 | |
750 | 0.0315 | 0.378 | 54.52 | 0.130 | |
800 | 0.0334 | 0.400 | 57.76 | 0.138 | |
900 | 0.0372 | 0.447 | 64.41 | 0.154 | |
1000 | 0.0412 | 0.494 | 71.27 | 0.170 | |
1100 | 0.0453 | 0.543 | 78.32 | 0.187 | |
1200 | 0.0494 | 0.593 | 85.53 | 0.204 | |
1400 | 0.0580 | 0.696 | 100.35 | 0.240 | |
1600 | 0.0668 | 0.802 | 115.63 | 0.276 |