Abstract
Measurement techniques for coal combustion system were reviewed from the point of view of a furnace scale-up.The calculation results of scale-up effect on the basis of simple turbulent theory indicated that turbulent mixing was especially sensitive to scale change.
Measurement techniques of 1) velocity fluctuation by means of correlation method and microphone probe, 2) turbulent mixing time by high speed combustion reaction, 3) turbulent diffusion by helium tracer were mainly explained. Classification sampling of fly ash and removement of ash for gas sampling those are peculiar to the measurement of coal combustion were also explained.
