Abstract
ABSTRACT The circulating fluidized-bed combustor (CFBC) recently has its commercial breakthrough as a viable technology to burn solid fuels with high efficiencies and low emissions. A 1·0 ton-steam/hr CFBC test facility has been designed, built, and systematically tested with Taiwan coals. The CFBC test chamber of 0·4 m square cross-section and 10 m high has built-in flexibility in thermal and combustion measurements. This paper presents the results of local heat transfer between bulk solids and the combustor wall. Effects of superficial fluidizing velocity, bed density, bed temperature, and solid recycle rate on heat transfer coefficient were measured and delineated.
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