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ISO 7345:1987
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Thermal insulation -- Physical quantities and definitions

This standard has been reviewed* and then confirmed in 2008.

*ISO standards are reviewed every five years.

Abstract

Defines physical quantities used in the field of thermal insulation, i.a. quantity of heat, heat flow rate, density of heat flow rate, thermal conductivity, thermal resistance, thermal transmittance, heat capacity, thermal diffusivity, thermal effusivity etc., and gives the corresponding symbols and units.

 

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