Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Helium - Thermophysical Properties

Chemical, Physical and Thermal Properties of Helium - He.

Sponsored Links

Chemical, physical and thermal properties of Helium - He :
(values at 25 oC (77 o F, 298 K) and atmospheric pressure)

Helium - Thermophysical Properties
Molecular Weight 4.0026
Specific Gravity , air = 1 0.138
Specific Volume ( ft3 /lb, m3 /kg ) 97.86, 6.11
Density of liquid at atmospheric pressure ( lb/ft3 , kg/m3 ) 7.80, 125
Absolute Viscosity ( lb m /ft s, centipoises ) 13.4 10-6 , 0.02
Sound velocity in gas ( m/s ) 1015
Specific Heat - c p - ( Btu/lb o F or cal/g oC, J/kgK ) 1.24, 5188
Specific Heat Ratio - c p /c v 1.66
Gas constant - R - ( ft lb/lb o R, J/kg oC ) 386, 2077
Thermal Conductivity ( Btu/hr ft o F, W/m oC ) 0.086, 0.149
Boiling Point - saturation pressure 14.7 psia and 760 mm Hg - ( o F, o K ) -452, 4.22
Latent Heat of Evaporation at boiling point ( Btu/lb, J/kg ) 10.0, 23300
Critical Temperature ( o F, o K ) -450.3, 5.2
Critical Pressure ( psia, MN/m2 ) 33.22, -
Critical Volume ( ft3 /lb, m3 /kg ) 0.231, 0.0144
Flammable no

Follow the links below to get values for the listed properties of helium at varying pressure and temperature :

See also more about atmospheric pressure , and STP - Standard Temperature and Pressure & NTP - Normal Temperature and Pressure ,
as well as Thermophysical properties of: Acetone , Acetylene , Air , Ammonia , Argon , Benzene , Butane , Carbon dioxide , Carbon monoxide , Ethane , Ethanol , Ethylene , Hydrogen , Hydrogen sulfide , Methane , Methanol , Nitrogen , Oxygen , Pentane , Propane , Toluene , Water and Heavy water, D2O .

Sponsored Links

Related Topics

  • Material Properties

    Properties of gases, fluids and solids. Densities, specific heats, viscosities and more.

Related Documents

Sponsored Links

Search

Search is the most efficient way to navigate the Engineering ToolBox.

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about

Citation

This page can be cited as

  • The Engineering ToolBox (2008). Helium - Thermophysical Properties. [online] Available at: https://www.engineeringtoolbox.com/helium-d_1418.html [Accessed Day Month Year].

Modify the access date according your visit.

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Unit Converter

















































3.15.9

Sponsored Links
.