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insulation thermal conductivity

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  • Thermal conductivity — In physics, thermal conductivity, k, is the property of a material that indicates its ability to conduct heat. It appears primarily in Fourier s Law for heat conduction.First, we define heat conduction by the formula::: H=frac{Delta Q}{Delta t}=k …   Wikipedia

  • Thermal mass — Thermal mass, in the most general sense, is any material that has the capacity to store heat. The following discussion pertains to its functional application in ecologically sustainable building construction. When used correctly, it can… …   Wikipedia

  • Thermal insulation — The term thermal insulation can refer to materials used to reduce the rate of heat transfer, or the methods and processes used to reduce heat transfer.Heat energy can be transferred by conduction, convection, radiation or when undergoing a phase… …   Wikipedia

  • Thermal bridge — Temperature distribution in a thermal bridge A thermal bridge, also called a cold bridge,[1] is a fundamental of heat transfer where a penetration of the insulation layer by a highly conductive or noninsulating material takes place in the… …   Wikipedia

  • Thermal conduction — In heat transfer, conduction (or heat conduction) is a mode of transfer of energy within and between bodies of matter, due to a temperature gradient. Conduction means collisional and diffusive transfer of kinetic energy of particles of ponderable …   Wikipedia

  • Thermal contact conductance — In physics, thermal contact conductance is the study of heat conduction between solid bodies in thermal contact. The thermal contact conductance coefficient, hc, is a property indicating the thermal conductivity, or ability to conduct heat,… …   Wikipedia

  • thermal — I. adjective Etymology: Greek thermē Date: 1756 1. [Latin thermae public baths, from Greek thermai, plural of thermē] of, relating to, or marked by the presence of hot springs < thermal waters > 2. a. of, relating to, or caused by heat < th …   New Collegiate Dictionary

  • Thermal flywheel effect — The thermal flywheel effect, sometimes also referred to as Thermal Momentum , is a term used to describe the property of a material to remain at a given temperature. It is generally applied to buildings or construction materials. This is distinct …   Wikipedia

  • thermal insulation — noun 1. : the process of insulating against transmission of heat 2. : material of relatively low heat conductivity used to shield a volume against loss or entrance of heat by radiation, convection, or conduction …   Useful english dictionary

  • R-value (insulation) — The R value or R value is a measure of thermal resistance (K·m²/W) [Oak Ridge National Laboratory, [http://www.ornl.gov/sci/roofs+walls/insulation/ins 02.html Which Kind Of Insulation Is Best?] , retrieved 2008 07 13.] used in the building and… …   Wikipedia

  • Cellulose insulation — The word cellulose comes from the French word for a living cellule and glucose, which is sugar. Insulation is low thermal conductivity material used to separate the internal climate and sounds of a building from external climate and sounds.… …   Wikipedia

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