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 wa...
THERMAL conductivityTHERMAL conductivity measurementSCIENTIFIC literatureAIR jetsFLAMEIn this article presented results of measurements of heat conductivity coefficient of the porous material, obtained by melting industrial steel grade 'Steel 3' in the range of temperatures from -140 to...
"Polar bear hair has been evolutionarily optimized to help prevent heat loss in cold and humid conditions, which makes it an excellent model for a synthetic heat insulator," said Yu, the paper's co-senior author. The heat conductivity of the material is even lower than that of dry air, s...
gross heat conductivity 总热传导 conductivity n. 导电率,传导率,传导度 coefficient n. 1.【数】系数 2.【物】(测定物质某种特性的)系数 Heat 警察.现在的说法是cops. heat n. 1.[U] 热,热度,温度,高温,炎热天气 2.[U] 强烈的感情,(尤指)愤怒或激动,辛辣批评 3.[C] 预赛(获胜者可参加复赛或...
A heat conductivity and brightness enhancing structure for light-emitting diode, including a bracket having a cathode leg support. A bowl structure is formed on upper end of the cathode leg support for resting a light-emitting chip therein. At least one depression is formed on a bottommost sect...
First, we used a thermal imaging system equipped with a macro lens to ensure that the border between 25 °C and hot floor tiles was reasonably sharp and homogeneous (Fig.3a, b). Taking into consideration the physical dimensions of the chamber, the thermal conductivity of air, the heat tr...
A simplified determination of the thermal conductivity of the dump material can be conducted on the basis of the heat transfer through a cylinder (Eqn(8.3.3)). The input values are the heat extraction capacity of theBHE(q(kW/m)), the flow velocity in the heat exchanging cycle, the system...
The heat transfer by conduction depends on thethermal conductivityof the material forming the receiver λrecand its thickness Δz, it is given by: (A.2)Qcond,rec=(λrec/Δz)Arec(Tcav-Tamb) The loss due to conduction is also dependent on theconvective heat transferon the exterior of the...
7、 Nusselt number, viewed as the dimensionless convection heat transfer coefficient is defined as:Nu=hLckWhere k is the thermal conductivity of the fluid and Lc is the characteristic length. The physical significance means the heat transfer ratio of convection to conduction. For Nu=1, the heat...
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