Carbon dioxide - Prandtl Number vs. Temperature and Pressure
The Prandtl Number - Pr - is a dimensionless number approximating the ratio of momentum diffusivity (kinematic viscosity) to thermal diffusivity - and is often used in heat transfer and free and forced convection calculations.
The Prandtl number can for calculations be expressed as
Pr = μ C p / k (1)
where
μ = absolute or dynamic viscosity (kg/m s, lb m /(ft h))
C p = specific heat (J/kg K, Btu/(lb m o F))
k = thermal conductivity (W/m K, Btu/(h ft 2 o F/ft))
Below, Prandtl numbers for carbon dioxide at varying temperatures and pressures are given in figures and table .
See also other properties of Carbon Dioxide at varying temperature and pressure: Density and specific weight , Dynamic and kinematic viscosity , Specific heat (Heat capacity) and Thermal conductivity , and Thermophysical properties at standard conditions , ,
as well as Prandtl number of Air , Ammonia , Methane , Nitrogen , Propane and Water .
Carbon dioxide Prandtl number at gas-liquid equilibrium pressure, temperature given as °C or °F:
Carbon dioxide Prandtl number at atmospheric pressure, temperature given as °C and °F:
Carbon dioxide Prandtl number at varying temperatures at given constant pressures, SI and Imperial units:
Carbon dioxide Prandtl number at given temperatures and 1, 10, 50 and 100 bara presure:
| Temperature | Prandtl number at given pressures | |||||
| [K] | [°C] | [°F] | 1 bara | 10 bara | 50 bara | 100 bara |
| 220 | -53.2 | 2.5 | 0.792 | 2.70 | ||
| 233.03 | -40.1 | 9.7 | 0.977 | |||
| 240 | -33.2 | 13.6 | 0.785 | 0.942 | 2.32 | |
| 250 | -23.2 | 19.1 | 0.781 | 0.902 | 2.23 | 2.16 |
| 260 | -13.2 | 24.7 | 0.777 | 0.873 | 2.10 | |
| 280 | 6.9 | 35.8 | 0.770 | 0.833 | 2.06 | |
| 287.43 | 14.3 | 39.9 | 2.74 (liq) | |||
| 287.43 | 14.3 | 39.9 | 1.92 (g) | |||
| 300 | 26.9 | 46.9 | 0.763 | 0.807 | 2.39 | |
| 320 | 46.9 | 58.0 | 0.756 | 0.788 | 4.08 | |
| 340 | 66.9 | 69.1 | 0.750 | 0.774 | 1.53 | |
| 360 | 86.9 | 80.3 | 0.745 | 0.764 | 1.17 | |
| 400 | 127 | 102 | 0.738 | 0.749 | 0.938 | |
| 450 | 177 | 130 | 0.732 | 0.739 | 0.776 | 0.840 |
| 500 | 227 | 158 | 0.728 | 0.732 | 0.792 | |
| 600 | 327 | 214 | 0.725 | 0.727 | 0.754 | |
| 650 | 377 | 241 | 0.725 | 0.726 | 0.734 | 0.745 |
| 850 | 577 | 352 | 0.723 | 0.724 | 0.726 | 0.730 |
| 1050 | 777 | 464 | 0.721 | 0.721 | 0.723 | 0.724 |
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