ISO 7345:1987 Preview
Thermal insulation -- Physical quantities and definitions
This standard was last reviewed and confirmed in 2008. Therefore this version remains current.
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.