Hydrogen - Specific Heat
Specific heat (C) is the amount of heat required to change the temperature of a mass unit of a substance by one degree.
- Isobaric specific heat (Cp ) is used for substances in a constant pressure (ΔP = 0) system.
- I sochoric specific heat (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 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 :
| 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 of Air - at Constant Pressure and Varying Temperature , Air - at Constant Temperature and Varying Pressure , Ammonia , Butane , Carbon dioxide , Carbon monoxide , Ethane , Ethanol , Ethylene , Methane , Methanol , Nitrogen , Oxygen , Propane and Water .
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Properties of gases, fluids and solids. Densities, specific heats, viscosities and more.
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