Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Search "the most efficient way to navigate the Engineering ToolBox!" Thermal Conductivity of some common Materials and Gases Thermal conductivity of some common materials and gases - insulation, aluminum, asphalt, brass, copper, steel and many more .. Sponsored Links Thermal conductivity is the quantity of heat transmitted through a unit thickness in a direction normal to a surface of unit area, due to a unit temperature gradient under steady state conditions. Thermal conductivity of some common materials and products are indicated in the table below. • 1 W/(m.K) = 1 W/(m. o C) = 0.85984 kcal/(hr.m. o C) = 0.5779 Btu/(ft.hr. o F) Thermal Conductivity - k - W/(m.K) Material/Substance Temperature - o C 25 125 225 Acetals 0.23 Acetone 0.16 Acetylene (gas) 0.018 Acrylic 0.2 Air, athmosphere (gas) 0.024 Air, elevation 10000 m 0.020 Alcohol 0.17 Aluminum 205 215 250 Aluminium Brass 121 Aluminum Oxide 30 Ammonia (gas) 0.022 Antimony 18.5 Apple (85.6% moisture) 0.39 Argon (gas) 0.016 Asbestos-cement board 0.744 Asbestos-cement sheets 0.166 Asbestos-cement 2.07 Asbestos, loosely packed 0.15 Asbestos mill board 0.14 Asphalt 0.75 Balsa wood 0.048 Bitumen 0.17 Bitumen/felt layers 0.5 Beef, lean (78.9 % moisture) 0.43 - 0.48 Benzene 0.16 Beryllium 218 Bitumen 0.17 Blast furnace gas (gas) 0.02 Brass 109 Breeze block 0.10 - 0.20 Brick dense 1.31 Brick, insulating 0.15 Brickwork, common 0.6 -1.0 Brickwork, dense 1.6 Bromine (gas) 0.004 Bronze 110 Butter (15% moisture content) 0.20 ► Heat Exchangers ► Heat Transfer ► Thermal Materials ► Gases in Water Extruded Poly veejaytrad 32-36 Density, 25mm -100mm Thick Avai Page 1 of 9 Thermal Conductivity of some common Materials and Gases 6/9/2014 http://www.engineeringtoolbox.com/thermal-conductivity-d_429.html
Information on Thermal conductivity of several materials.
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Resources, Tools and Basic Information for Engineering and Design of Technical Applications!
Search "the most efficient way to navigate the Engineering ToolBox!"
Thermal Conductivity of some common Materials and Gases
Thermal conductivity of some common materials and gases - insulation, aluminum, asphalt, brass, copper, steel and many more ..
Sponsored Links
Thermal conductivity is the quantity of heat transmitted through a unit thickness in a direction normal to a surface of unit area, due to a unit temperature gradient under steady state conditions.
Thermal conductivity of some common materials and products are indicated in the table below.
Example - Conductive Heat Transfer through a Aluminum versus Stainless Steel Pot
The conductive heat transfer through a pot wall can be calculated as
q / A = k dT / s
where
q / A = heat transfer per unit area (W/m2)
k = thermal conductivity (W/mK)
dT = temperature difference (oC)
s = wall thickness (m)
Conductive Heat Transfer through Aluminum Pot Wall with thickness 2 mm and temperature difference 200oC
q / A = (250 W/mK) (200 oC) / (2 10-3 m)
= 25000 (kW/m2)
Conductive Heat Transfer through Stainless Steel Pot Wall with thickness 2 mm and temperature difference 200oC
q / A = (16 W/mK) (200 oC) / (2 10-3(m)
= 1600 (kW/m2)
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Related Topics
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Page 5 of 9Thermal Conductivity of some common Materials and Gases
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• Thermal Conductivity of Metals - Thermal conductivity of some common metals
• Thermal Transmittance - U and Thermal Resistance - R - Thermal transmittance - U - from thermal resistance
• Calcium Silicate Insulation - Thermal conductivity - temperature and k-values
• Thermal Conductivity Coefficients Plastics - Conductivity for some common plastics
• Conductive Heat Transfer - Heat transfer takes place as conduction if there is a temperature gradient in a solid or fluid
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