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Numerical Optimization of Air Flow in the Plenum Chamber of an Industrial CFB Boiler

100%

Mirek P. , Jabłoński J. , Nowak W.

tom Vol. 12, No 3-4

237-244

The article presents the results of experimental and numerical studies on windboxes operating in a 235MWe Circulating Fluidized Bed (CFB) boiler. The main problems of windbox designs have been identified and a modified internal geometry has been proposed which causes a more uniform flow under the grid and prevents the velocity field from formation of dead zones.

The influence of air distributor's geometry on combustion conditions in large-scale CFB boilers

75%

Mirek P. , Nowak W.

tom Vol. 29, no. 3

37--44

The article presents the results of experimental studies on two large-scale 235 MW[e] circulating fluidized bed (CFB) boilers operated under comparable operating conditions. The obtained results have shown, that the change in the shape of primary air nozzles, thus primary air distribution in the lower part of the combustion chamber has substantially influenced the intensity of the combustion process and the temperature distribution along the CFB structure height.