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Carbon Dioxide Gas - Specific Heat

Specific heat of Carbon Dioxide gas - CO2 - temperatures ranging 175 - 6000 K

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Carbon dioxide gas is colorless and heavier than air and has a slightly irritating odor.  The freezing point is -78.5 oC (-109.3 oF) where it forms carbon dioxide snow or dry ice.

Carbon dioxide gas is produced from the combustion of coal or hydrocarbons or by fermentation of liquids and the breathing of humans and animals.  Carbon dioxide is assimilated by plants and used to produce oxygen.

Carbon dioxide is at a low concentration in the atmosphere and acts as a greenhouse gas.

Specific heat (or heat capacity) (C) is the amount of heat required to change the temperature of a mass unit of a substance by one degree.

  • Isobaric heat capacity  (Cp) is used for substances in a constant pressure (ΔP = 0) system.
  • Isochoric heat capacity  (Cv) is used for substances in a constant-volume, (= isovolumetric or isometric) closed system.

The specific heat  - CP and CV - will vary with temperature. When calculating mass and volume flow of a substance in heated or cooled systems with high accuracy - the specific heat (= heat capacity) should be corrected according values in the table below.

Specific heat of Carbon Dioxide gas - CO2 - at temperatures ranging 175 - 6000 K:

Carbon Dioxide Gas - CO2
Temperature
- T -
(K)

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Specific Heat
- cp -
(kJ/(kg K))

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175 0.709
200 0.735
225 0.763
250 0.791
275 0.819
300 0.846
325 0.871
350 0.895
375 0.918
400 0.939
450 0.978
500 1.014
550 1.046
600 1.075
650 1.102
700 1.126
750 1.148
800 1.168
850 1.187
900 1.204
950 1.220
1000 1.234
1050 1.247
1100 1.259
1150 1.270
1200 1.280
1250 1.290
1300 1.298
1350 1.306
1400 1.313
1500 1.326
1600 1.338
1700 1.348
1800 1.356
1900 1.364
2000 1.371
2100 1.377
2200 1.383
2300 1.388
2400 1.393
2500 1.397
2600 1.401
2700 1.404
2800 1.408
2900 1.411
3000 1.414
3500 1.427
4000 1.437
4500 1.446
5000 1.455
5500 1.465
6000 1.476

The values above apply to undissociated states. At high temperatures above 1500 K (3223 oF) dissociation becomes appreciable and pressure is a significant variable.

See also other properties of Carbon Dioxide at varying temperature and pressure: Density and specific weight, Dynamic and kinematic viscosityPrandtl number, Thermal conductivity, and Thermophysical properties at standard conditions, as well as Specific heat (Heat capacity) of  Air - at Constant Pressure and Varying TemperatureAir - at Constant Temperature and Varying PressureAmmonia, Butane, Carbon monoxide, Ethane, Ethanol, Ethylene, Hydrogen, Methane, Methanol, Nitrogen, Oxygen, Propane and Water.

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