The new method for the evaluation of thermal parameters provides acceptable relative errors for soil, grout thermal conductivities and borehole thermal resistivity
where is the heat source generated by the power cables and the shield (computed from the electromagnetic problem), [theta] is the unknown temperature, and [rho] is the thermal resistivity
of each material.
In addition, the Orange Beach cables may be uprated as a result of the better-than-designed thermal resistivity
So, the longitudinal thermal resistivity
[dR.sub.q] could be expressed
Among the topics are the basic dielectric theory of cable, electrical properties of cable insulating materials, the thermal resistivity
of soil, the field assessment of power cable systems, and armor corrosion in submarine cables.
Low thermal resistivity
can achieve the required thermal coupling, but voids within solder connections play a decisive role in degrading this coupling.
Materials with VA content of 40-70% are known as oxidation cross-linkable rubbers with excellent thermal resistivity
for which they are used for cable sheaths.
Soil thermal conductivity (K), thermal resistivity
(R) and thermal diffusivity (D) were all highly variable across the forested area.
Reduced thermal resistivity
is also known to decrease a device's memory effects and improve linearity.
REGARDING CURRENT HANDLING on inner traces ("Currents and Conductors," May 2003), while it is true that board material has a lower thermal resistivity
than air, the heat from an innerlayer must still go through the outerlayer and finally into the air.
Labcell has introduced the Decagon KD2 Thermal Analyzer, a handheld instrument that is suitable for measuring thermal conductivity, thermal diffusability, thermal resistivity
and temperature in foodstuffs.
Volume expansion of both PBT and EXA was postulated to be the main parameter responsible for the thermal resistivity
evolution through the range +20 to + 170[degrees]C.