BS EN 993-15:2005 Methods of test for dense shaped refractory products - Part 15: Determination of thermal conductivity by the hot wire (parallel) method
This European Standard describes a hot-wire (parallel) method for the determination of thermal conductivity of
refractory products and materials. It is applicable to dense and insulating shaped products and to powdered or
granular materials (see 6.2), for thermal conductivities of less than 25 W/m.K. The limits are imposed by the
thermal diffusivity of the test material and therefore by the dimensions of the test pieces; higher thermal
conductivities can be measured if larger pieces are used. Electrically conducting materials cannot be
measured.
NOTE 1 The thermal conductivity of products with a hydraulic or chemical bond can be affected by the appreciable
amount of water that is retained after hardening or setting and is released on firing. These materials may therefore require
pre-treatment; the nature and extent of such pre-treatment and the period for which the test piece is held at the
measurement temperature as a preliminary to carrying out the test, are details that are outside the scope of this standard
and should be agreed between the parties concerned.
NOTE 2 In general it is difficult to make measurements on anisotropic materials and the use of this method for such
materials should also be agreed between the parties concerned.
BS EN 993-15:2005 history
0000 BS EN 993-15:2005(2010)
2005BS EN 993-15:2005 Methods of test for dense shaped refractory products - Part 15: Determination of thermal conductivity by the hot wire (parallel) method