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# Carbon dioxide - Thermal Conductivity vs. Temperature and Pressure

## Online calculator, figures and table showing thermal conductivity of carbon dioxide, CO2, at temperatures ranging from -50 to 775 °C (-50 to 1400 °F) at atmospheric and higher pressure - Imperial and SI 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 most common units are W/(m K) in the SI system and Btu/(h ft °F) in the Imperial system.

Tabulated values and thermal conductivity units conversion are given below the figures.

### Online Carbon Dioxide Thermal Conductivity Calculator

The calculator below can be used to estimate the thermal conductivity of gaseous carbon dioxide at given temperatures and 1 bara.
The output conductivity is given as mW/(m K), Btu(IT)/(h ft °F), (Btu(IT) in)/(h ft2°F) and kcal(IT)/(h m K).

Choose the actual unit of temperature:

See also other properties of Carbon Dioxide at varying temperature and pressure: Density and specific weight , Dynamic and kinematic viscosity , Prandtl number and Specific heat (Heat capacity) , and Thermophysical properties at standard conditions , as well as thermal conductivity o f air , ammonia , butane , ethane , ethylene , hydrogen , methane , nitrogen , propane and water .

Thermal conductivity of carbon dioxide at given temperatures and pressures:

For full table with Thermal Conductivity - rotate the screen!

Carbon dioxide - Thermal Conductivity vs. Temperature and Pressure
State Temperature Pressure Thermal conductivity
[K] [°C] [°F] [MPa] [bara] [psia] [mW/m K] [kcal(IT)/(h m K)] [Btu(IT)/(h ft °F)] [Btu(IT) in/(h ft2 °F)]
Gas 220 -53.2 -63.7 0.1 1 14.5 10.90 0.009372 0.006298 0.07558
240 -33.2 -27.7 0.1 1 14.5 12.24 0.01052 0.007072 0.08487
250 -23.2 -9.7 0.1 1 14.5 12.95 0.01113 0.007482 0.08979
260 -13.2 8.3 0.1 1 14.5 13.68 0.01176 0.007904 0.09485
280 6.9 44.3 0.1 1 14.5 15.20 0.01307 0.008782 0.1054
300 26.9 80.3 0.1 1 14.5 16.79 0.01444 0.009701 0.1164
320 47 116 0.1 1 14.5 18.42 0.01584 0.01064 0.1277
340 67 152 0.1 1 14.5 20.09 0.01727 0.01161 0.1393
360 87 188 0.1 1 14.5 21.77 0.01872 0.01258 0.1509
400 127 260 0.1 1 14.5 25.14 0.02162 0.01453 0.1743
450 177 350 0.1 1 14.5 29.35 0.02523 0.01696 0.2035
500 227 440 0.1 1 14.5 33.49 0.02880 0.01935 0.2322
600 327 620 0.1 1 14.5 41.55 0.03573 0.02401 0.2881
650 377 710 0.1 1 14.5 45.47 0.03909 0.02627 0.3152
850 577 1070 0.1 1 14.5 60.30 0.05184 0.03484 0.4181
1050 777 1430 0.1 1 14.5 73.84 0.06349 0.04267 0.5120
Gas 233.03 -40.1 -40.2 1 10 145 12.53 0.01077 0.00724 0.08688
240 -33.2 -27.7 1 10 145 12.94 0.01113 0.00748 0.08972
250 -23.2 -9.7 1 10 145 13.58 0.01168 0.00785 0.09418
260 -13.2 8.3 1 10 145 14.26 0.01226 0.00824 0.09887
280 6.9 44.3 1 10 145 15.71 0.01351 0.00908 0.1089
300 26.9 80.3 1 10 145 17.25 0.01483 0.00997 0.1196
320 46.9 116 1 10 145 18.84 0.01620 0.01089 0.1306
340 66.9 152 1 10 145 20.47 0.01760 0.01183 0.1419
360 86.9 188 1 10 145 22.12 0.01902 0.01278 0.1534
400 127 260 1 10 145 25.46 0.02189 0.01471 0.1765
450 177 350 1 10 145 29.62 0.02547 0.01711 0.2054
500 227 440 1 10 145 33.74 0.02901 0.01949 0.2339
600 327 620 1 10 145 41.76 0.03591 0.02413 0.2895
650 377 710 1 10 145 45.65 0.03925 0.02638 0.3165
850 577 1070 1 10 145 60.44 0.05196 0.03492 0.4190
1050 777 1430 1 10 145 73.96 0.06359 0.04273 0.5128
Liquid 250 -23.2 -9.7 5 50 725 142.2 0.1223 0.08217 0.9861
287.43 14.3 57.7 5 50 725 92.76 0.07976 0.05360 0.6432
Gas 287.43 14.3 57.7 5 50 725 27.32 0.02349 0.01579 0.1894
450 177 350 5 50 725 31.16 0.02680 0.01801 0.2161
650 377 710 5 50 725 46.59 0.04006 0.02692 0.3230
850 577 1070 5 50 725 61.12 0.05255 0.03531 0.4238
1050 777 1430 5 50 725 74.49 0.06405 0.04304 0.5165
Liquid 250 -23.2 -9.7 10 100 1450 147.5 0.1268 0.08524 1.023
Supercritical
phase
450 177 350 10 100 1450 33.92 0.02916 0.01960 0.2352
650 377 710 10 100 1450 48.01 0.04128 0.02774 0.3328
850 577 1070 10 100 1450 62.09 0.05339 0.03588 0.4305
1050 777 1430 10 100 1450 75.24 0.06470 0.04347 0.5217
Supercritical
phase
250 -23.2 -9.7 100 1000 14504 206.3 0.1774 0.1192 1.430
450 177 350 100 1000 14504 106.7 0.09170 0.06162 0.7395
650 377 710 100 1000 14504 86.09 0.07403 0.04974 0.5969
850 577 1070 100 1000 14504 87.26 0.07503 0.05042 0.6050
1050 777 1430 100 1000 14504 94.02 0.08084 0.05432 0.6519

Thermal conductivity units conversion:

Thermal conductivity unit converter

british thermal unit(international)/(foot hour degree fahrenheit) [Btu(IT)/(ft h°F], british thermal unit(international)/(inch hour degree fahrenheit) [Btu(IT)/(in h°F], british thermal unit(international)*inch/(square foot*hour*degree fahrenheit) [(Btu(IT) in)/(ft² h°F)], kilocalorie/(meter hour degree celcius) [kcal/(m h°C)], joule/(centimeter second degree kelvin) [J/(cm s K)], watt/(meter degree kelvin) [W/(m°C)],

• 1 Btu(IT)/(ft h°F) = 1/12 Btu(IT)/(in h°F) = 0.08333 Btu(IT)/(in h°F) = 12 Btu(IT)in/(ft2h°F) = 1.488 kcal/(m h°C) = 0.01731 J/(cm s K) = 1.731 W/(m K)
• 1 Btu(IT)/(in h°F) = 12 Btu(IT)/(ft h°F) = 144 Btu(IT)in/(ft2h°F) = 17.858 kcal/(m h°C) = 0.20769 J/(cm s K)= 20.769 W/(m K)
• 1 (Btu(IT) in)/(ft² h°F) = 0.08333 Btu(IT)/(ft h°F) = 0.00694 Btu(IT)/(in h°F) = 0.12401 kcal/(m h°C) = 0.001442 J/(cm s K) = 0.1442 W/(m K)
• 1 J/(cm s K) = 100 W/(m K) = 57.789 Btu(IT)/(ft h°F) = 4.8149 Btu(IT)/(in h°F) = 693.35 (Btu(IT) in)/(ft² h°F) = 85.984 kcal/(m h°C)
• 1 kcal/(m h°C) = 0.6720 Btu(IT)/(ft h°F) = 0.05600 Btu(IT)/(in h°F) = 8.0636 (Btu(IT) in)/(ft2h°F) = 0.01163 J/(cm s K) = 1.163 W/(m K)
• 1 W/(m K) = 0.01 J/(cm s K) = 0.5779 Btu(IT)/(ft h°F) = 0.04815 Btu(IT)/(in h°F) = 6.9335 (Btu(IT) in)/(ft² h°F) = 0.85984 kcal/(m h°C)

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## Citation

• The Engineering ToolBox (2018). Carbon dioxide - Thermal Conductivity vs. Temperature and Pressure . [online] Available at: https://www.engineeringtoolbox.com/carbon-dioxide-thermal-conductivity-temperature-pressure-d_2019.html [Accessed Day Month Year].

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