Thermal Insulation - Determination of Steady- State Thermal Resistance and Related Properties - Heat Flow Meter Apparatus
|Publication Date:||1 August 1991|
|ICS Code (Heat recovery. Thermal insulation):||27.220|
This International Standard defines the use of the heat flow meter method to measure the steady-state heat transfer through flat slab specimens and the calculation of the heat transfer properties of specimens.
This is a secondary or relative method since the ratio of the thermal resistance of the specimen(s) to that of a standard specimen(s) is measured.
Reports conforming to this standard test method shall refer to specimens with thermal resistance greater than 0,1 m2.K/W provided that thickness limits given in 1.7.2 are not exceeded.
If the specimens satisfy the requirements outlined in 1.8.1, the resultant properties shall be described as the thermal conductance and thermal resistance of the specimen.
If the specimens satisfy the requirements of 1.8.2, the resultant properties shall be described as the mean thermal conductivity of the specimen being evaluated.
If the specimens satisfy the requirements of 1.8.3, the resultant property may be described as the thermal conductivity or the transmissivity of the material being evaluated.