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# 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 10 bara, 145 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, CH4, 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, CH4, 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, CH4, 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 - CH4. 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.

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