Taking a 1 025 t/h boiler with wet bottom as an object to be studied

the one-dimentional heat flux density distribution situation in the lower furnace has been calculated

the result obtained from calculation tallies better with the absorbed heat of water-wall in each section of the lower furnace.The calculation shows that the regularity of variation for flue gas temperature

for heat flux density

as well as for heat flux density of water-wall absorbed heat are basically identical.Along with burning of pulverized coal particles and releasing of heat

the flue gas temperature

the heat flux density

and the heat flux density of water-wall absorbed heat are gradually increased

but the decreasing tendency appeared again after reaching the peak value

providing reference data for hydrodynamic calculation of the water-wall.