# Methane - Prandtl number vs. Temperature

** 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 ** methane ** at varying temperatures and pressures are given in figures and table .

See also other properties of ** Methane ** 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 , Carbon dioxide , Nitrogen , Propane and Water .

Methane Prandtl number at atmospheric pressure, temperature given as °C or °F:

Methane Prandtl number at varying temperatures and constant pressures, SI and Imperial units:

Methane Prandtl number at given temperatures and 1, 10 and 100 bara presure:

Temperature | Prandtl number at given pressures | ||||

[K] | [°C] | [°F] | 1 bara, 14.5 psia |
| 100 bara, 1450 psia |

160 | -113 | -172 | 0.7721 | 0.8659 | 1.629 |

180 | -93.2 | -136 | 0.7583 | 0.8170 | 1.640 |

200 | -73.2 | -99.7 | 0.7487 | 0.7892 | 1.867 |

220 | -53.2 | -63.7 | 0.7420 | 0.7726 | 2.055 |

240 | -33.2 | -27.7 | 0.7369 | 0.7607 | 1.453 |

260 | -13.2 | 8.3 | 0.7328 | 0.7515 | 1.148 |

280 | 6.9 | 44.3 | 0.7299 | 0.7452 | 1.007 |

300 | 26.9 | 80.3 | 0.7279 | 0.7402 | 0.9304 |

320 | 46.9 | 116 | 0.7261 | 0.7370 | 0.8824 |

340 | 66.9 | 152 | 0.7243 | 0.7341 | 0.8501 |

360 | 86.9 | 188 | 0.7234 | 0.7312 | 0.8269 |

400 | 127 | 260 | 0.7216 | 0.7276 | 0.7968 |

500 | 227 | 440 | 0.7182 | 0.7233 | 0.7560 |

600 | 327 | 620 | 0.7155 | 0.7179 | 0.7385 |

700 | 427 | 800 | 0.7127 | ||

800 | 527 | 980 | 0.7099 | ||

900 | 627 | 1160 | 0.7082 | ||

1000 | 727 | 1340 | 0.7060 |

## Related Topics

### • Fluid Mechanics

The study of fluids - liquids and gases. Involving velocity, pressure, density and temperature as functions of space and time.

### • Material Properties

Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.

### • Thermodynamics

Work, heat and energy systems.

## Related Documents

### Air - Prandtl Number

Prandtl number for air vs. temperature and pressure.

### Ammonia - Prandtl Number vs. Temperature and Pressure

Figures and table with changes in Prandtl number for ammonia with changes in temperature and pressure.

### Carbon dioxide - Prandtl Number vs. Temperature and Pressure

Figures and table with changes in Prandtl number for carbon dioxide with changes in temperature and pressure.

### Conductive Heat Transfer

Conductive heat transfer takes place in a solid if there is a temperature gradient.

### Heat, Work and Energy

Heat vs. work vs. energy.

### Methane - Dynamic and Kinematic Viscosity vs. Temperature and Pressure

Online calculator, figures and tables showing dynamic and kinematic viscosity of methane, CH_{4}, at varying temperature and pressure - Imperial and SI Units.

### Methane - Density and Specific Weight vs. Temperature and Pressure

Online calculator, figures and tables showing density and specific weight of methane, CH_{4}, at temperatures ranging from -160 to 725 °C (-260 to 1300 °F) at atmospheric and higher pressure - Imperial and SI Units.

### Methane - Liquid vs. Gaseous Units

Convert between liquid and gaseous LNG and Methane units.

### Methane - Thermal Conductivity vs. Temperature and Pressure

Online calculator, figures and table showing thermal conductivity of methane, CH_{4}, at temperatures ranging from -160 to 725 °C (-260 to 1300 °F) at atmospheric and higher pressure - Imperial and SI Units.

### Methane - Thermophysical Properties

Chemical, Physical and Thermal Properties of Methane - *CH _{4}*. Phase diagram included.

### Methane Gas - Specific Heat vs. Temperature

Specific heat of Methane Gas - CH4 - at temperatures ranging 200 - 1100 K.

### Nitrogen - Prandtl number vs. Temperature and Pressure

Figures and tables showing Prandtl number of nitrogen at varying temperarure and pressure, SI and Imperial units.

### Prandtl Number

A dimensionless number approximating the ratio of momentum diffusivity to thermal diffusivity.

### Propane - Prandtl Number vs. Temperature and Pressure

Figures and tables with Prandtl Number of liquid and gaseous propane at varying temperarure and pressure, SI and Imperial units.

### Propane - Thermal Diffusivity vs. Temperature and Pressure

Figures and tables showing thermal diffusivity of liquid and gaseous propane at varying temperarure and pressure, SI and Imperial units.

### Solubility of Gases in Water vs. Temperature

Solubility of Ammonia, Argon, Carbon Dioxide, Carbon Monoxide, Chlorine, Ethane, Ethylene, Helium, Hydrogen, Hydrogen Sulfide, Methane, Nitrogen, Oxygen and Sulfur Dioxide in water.

### Viscosity - Absolute (Dynamic) vs. Kinematic

Vicosity is a fluid's resistance to flow and can be valued as dynamic (absolute) or kinematic.