thermal conductivity


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thermal conductivity

[′thər·məl ‚kan‚dək′tiv·əd·ē]
(thermodynamics)
The heat flow across a surface per unit area per unit time, divided by the negative of the rate of change of temperature with distance in a direction perpendicular to the surface. Also known as coefficient of conductivity; heat conductivity.

thermal conductivity

The rate of transfer of heat by conduction; the amount of heat per unit of time per unit area that is conducted through a slab of unit thickness of a material if the difference in temperature between opposite faces is one degree of temperature; a property of the material itself, usually represented by the letter k and called k factor.
References in periodicals archive ?
But fixing agents, which have low thermal conductivity, reduce the temperature tolerance and conductivity of the sheet.
1: The effect of GF weight fraction and certain ratio of (SiC& Cu) on thermal conductivity.
where [[phi].sub.f] is the filler volume fraction, [kf.sub.1] and [kf.sub.2] are, respectively, the thermal conductivity of filler 1 and filler 2, [C.sub.1] is the factor affecting the crystalline degree and crystal size of polymer, and [C.sub.2] is the free factor for producing the thermal conductive link of the particles.
The test methods of rock thermal conductivity are mainly divided into two kinds, i.e.
In this study, the thermal conductivity and volumetric specific heat of low-density wooden mats were evaluated for each combination of mat density and mixing ratio.
Generally, at above room temperature, the thermal conductivity of the most dense ceramics decreased with increasing temperature because phonon scattering is more intense from the vibrating lattice at a higher temperature.
The thermal conductivity of the nanofluids was measured by thermal property analyser, KD2 Pro, Decagon Devices Inc.
Depending on the application requirements, any one of a wide range of additives might be used for thermal conductivity, says RTP, noting that "the most popular continue to be additives like graphite, but we are always exploring new options like graphene or novel ceramic additive systems."
For the thermal conductivity measurements, graphite was selected as the standard reference sample.
Thermal conductivity coefficient measurements were carried out using a C-Therm/Tci thermal conductivity device.
The measurement of some parameters of the materials, such as thermal diffusivity, thermal conductivity, and thermal expansion coefficient, is very important for applications used especially in the manufacturing of devices.