Definitions for thermal conductivity

This page provides all possible meanings and translations of the word thermal conductivity

U.S. National Library of Medicine

  1. Thermal Conductivity

    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. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

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  1. Thermal resistance

    Thermal resistance is a heat property and a measurement of a temperature difference by which an object or material resists a heat flow. Thermal resistance is the reciprocal of thermal conductance. In terms of insulation, the thermal resistance is measured by the R-value. Thermal resistance R has the units /W in SI units or /Btu in imperial units. Specific thermal resistance or specific thermal resistivity Rλ in /W is a material constant. Absolute thermal resistance Rₜₕ in K/W is a specific property of a component. For example, Rₜₕ is a characteristic of a heat sink.


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