thermal conductance


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thermal conductance

n.
1. A measure of the ability of an object to allow the flow of heat from its warmer surface through the object to its colder surface, determined as the heat energy transferred per unit of time divided by the temperature difference between the two surfaces, expressed in watts per kelvin. The conductance of an object equals the conductivity of its material times its surface area (cross-section) divided by the distance between the two surfaces (thickness).
2. The reciprocal of thermal resistance, usually measured in units of watts per kelvin.
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References in periodicals archive ?
Its utilization becomes irreplaceable for the industry as the metal provide high electric and thermal conductance as well as low tensile strength.
Thermal conductance could be affected by changes in insulation like developing thick fur or changes in body proportion like big ears or long legs that can help to dissipate heat.
This enhancement in ZT stems from two effects: first, the mismatch of phonon spectra between armchair and zigzag GNRs causes very low phonon thermal conductance; second, resonant tunneling of electrons allows efficient transmission of electrons across the structure.
The thermal conductance of the conductor was assumed to be 2000 W/[m.sup.2]/K.
For instance, the thermal conductance of a superconducting system, at low temperature T, is given by [19],
Thus, the amount of PCM could not be calculated precisely compared to the roof thickness, depending on the scale; thermal conductance changes in the linear manner and thermal mass changes in a cubic manner; and the miniature scale-model with specifications is not detailed enough to be applied to real buildings.
A carbon-nanotube heat-dissipation sheet created by this technology was found in actual measurements, with contact resistance taken into account, to have roughly three times the thermal conductance of indium sheets, an existing material known to have high thermal conductivity.
Materials with minimal 'thermal conductance' can recover waste heat from industrial processes for use as an energy source.
The reason for this mismatch is due to the values of thermal conductance contact; present value of thermal conductance contact is 10000 while the Deshmukh used 1000.
where [[eta].sub.cel] and [[eta].sub.cth] are, respectively, the electric conductance and thermal conductance of the contact surfaces.
In general terms, the theory defines the thermal time constant [tau], of a bolometer detector as the ratio of heat capacity C to thermal conductance G of the device, that is, by