A compilation of data on the radiant emissivity of some materials at high temperatures

This paper gives a compilation of experimental data from a variety of sources of the emissivity of materials used in high temperature applications. The data is given in the form of temperature dependent correlation equations which can be used for modelling purposes. The data on refractory materials show the importance of surface properties, the effect of surface coatings and ways in which these can be taken into account for more accurate predictions of emissivity. Information is also given on chars, ash particles and furnace deposits resulting from the combustion of coal and biomass.