thermal conductivity


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thermal conductivity

n.
A measure of the ability of a material to allow the flow of heat from its warmer surface through the material to its colder surface, determined as the heat energy transferred per unit of time and per unit of surface area divided by the temperature gradient, which is the temperature difference divided by the distance between the two surfaces (the thickness of the material), expressed in watts per kelvin per meter.

thermal conductivity

n
(General Physics) a measure of the ability of a substance to conduct heat, determined by the rate of heat flow normally through an area in the substance divided by the area and by minus the component of the temperature gradient in the direction of flow: measured in watts per metre per kelvin. Symbol: λ or k Sometimes shortened to: conductivity
References in periodicals archive ?
As the morphology of the polymer changes, the thermal conductivity is expected to change as well.
The first line, Aavid SuperThermal(TM), offers high thermal conductivity of up to 13.
Key words: cellulosic fibres, insulation panel, thermal conductivity
The compressive and flexural strength are based on BS EN 12390-3:2009 and BS EN 12390-5:2009, and thermal conductivity procedure follows ASTM C332-99, then measured with a Hot-Disk probe TPS2500.
For applications requiring higher thermal conductivity, lower viscosity, superior thermal cycling capability and improved adhesion, Insulcast can provide the solution.
1996) observed that the apparent thermal conductivity of moist insulation depends on the manner that the liquid distribute in the insulation, and they considered bead, series and parallel arrangements when modeling the moisture status in porous insulation.
3 Layer Construction Thickness = 114[micro]m Material Thermal Conductivity (W/m-k) Copper 400 Polyimide 0.
The aim of the current study is to determine the impact of oriented straw stalks on the thermal conductivity of a specimen, to reduce heat transfer in straw by mechanical processing and coating with infrared absorbers, to define the dependence of different straw orientation in specimens and straw densities of various structure on thermal conductivity according to the measurements of thermal conductivity and to discover an optimal amount of infrared absorbers for chopped and defibered straw.
Thermal conductivity is the rate at which a material conducts heat.
Li and his collaborators discovered that the thermal conductivity of a pair of thin strips of material called boron nanoribbons can be enhanced by up to 45 percent depending on the process that they used to stick the two ribbons together.
The effective thermal conductivity for stratified media is identified with average thermal conductivity.
The physical and statistical approach to the estimation of value of thermal conductivity coefficient of ceramic brick containing different salts (44 sorts of salt were considered) is presented in the paper.