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Hydrogen - Specific Heat

Specific heat of Hydrogen Gas - H2 - at temperatures ranging 175 - 6000 K

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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.

Hydrogen gas is colorless, highly flammable and very light. Hydrogen is the lightest and most abundant element in the universe.

Specific heat of Hydrogen Gas - H2 - at temperatures ranging 175 - 6000 K:

Hydrogen Gas - H2
Temperature
- T -
(K)
Specific Heat
- cp -
(kJ/(kg K))
175 13.12
200 13.53
225 13.83
250 14.05
275 14.20
300 14.31
325 14.38
350 14.43
375 14.46
400 14.48
450 14.50
500 14.51
550 14.53
600 14.55
650 14.57
700 14.60
750 14.65
800 14.71
850 14.77
900 14.83
950 14.90
1000 14.98
1050 15.06
1100 15.15
1150 15.25
1200 15.34
1250 15.44
1300 15.54
1350 15.65
1400 15.77
1500 16.02
1600 16.23
1700 16.44
1800 16.64
1900 16.83
2000 17.01
2100 17.18
2200 17.35
2300 17.50
2400 17.65
2500 17.80
2600 17.93
2700 18.06
2800 18.17
2900 18.28
3000 18.39
3500 18.91
4000 19.39
4500 19.83
5000 20.23
5500 20.61
6000 20.96

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

See also other properties of hydrogen at varying temperature and pressure:  Density and specific weight and 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 dioxide, Carbon monoxide, Ethane, Ethanol, Ethylene, Methane, Methanol, Nitrogen, Oxygen, Propane and Water.

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