This standard prescribes the general procedures and design of equip-ment for determining the thermal conductivity of dry samples of thermal insulating materials, provided that:
a) the materials are sufficiently uniform with regard to their aggregates and pores; and
b) the thermal conductivity of the material does not exceed l·5W/mK.
The equipment described in this standard is suitable for hot face temperature between 675 K and 1 275 K.
The thermal conductivity coefficients obtained apply only to the particular sample tested.
IS 9490-1980 history
1981IS 9490-1980 Determination method of thermal conductivity of thermal insulation materials (water calorimetry)