LOCAL MEASUREMENTS OF VELOCITY, TEMPERATURE AND GAS-COMPOSITION IN A PULVERIZED-COAL FLAME

A 1.3 MW swirl-stabilised pulverised-coal flame has been mapped with r espect to velocity, temperature, gas concentrations and local particle composition. Velocities were measured non-intrusively by Laser Dopple r anemometer, and the other parameters were measured by water-cooled p robes; all the measurements were performed on Riso's pulverised-coal-f ired horizontal tunnel furnace. The applicability and accuracy of LDA measurements in a coal flame have also been investigated. The experime nts have resulted in a comprehensive set of measuring data giving a go od impression of the anatomy of a swirl-stabilised coal flame. The dat a are also well-suited to the verification of numerical models of flam es.