This database provides default values for the specific heat of vapor for common gas load/charge materials. The data is used in heat loss calculations for process heating systems.
Default Gas Load/Charge Material Data
The following table lists the default substances and their specific heat of vapor values:
| Substance | Specific Heat of Vapor \([\unit{\btu\per\pound\degreeFahrenheit}]\) |
| Water vapor - Near Atm. Pressure | 0.47 |
| Steam - 50 PSIG, 400 degrees F | 0.4901 |
| Steam - 150 PSIG, 500 degrees F | 0.5099 |
| Steam - 600 PSIG, 700 degrees F | 0.5899 |
| Air - Low Pressure | 0.245 |
| Nitrogen - Low Pressure | 0.2501 |
| Oxygen - Low Pressure | 0.23 |
| Carbon Dioxide - Low Pressure | 0.24 |
| Carbon Monoxide - Low Pressure | 0.2501 |
| Hydrogen - Low Pressure | 3.45 |
- Note
- Values are representative and may vary with pressure and temperature.
- See also
- Gas Load Charge Material Heat Required Calculator
