Experimental Local Heat Transfer in a Circulating Fluidized Bed

A study on the effects of operational parameters on bed-to-wall heat transfer

“…In the sections below, firstly, the validity of the modified cluster renewal model is proved via comparing the simulation results with test results published in the literature [10][11][12]. In these comparisons, the same input variables are used in the tests as the simulation program input.…”

“…In the present study, to verify the accuracy of the model predictions of bed-to-wall heat transfer coefficient along the bed height, simulation results are compared with Furchi et al [10], Andersson [11] and Wang et al [12]'s experimental results. The measurement conditions of experimental data used for the comparison of modified cluster renewal model is summarized in Table 2.…”

“…3. shows the comparison of model bed-to-wall heat transfer coefficient values with Furchi et al [10]'s experimental data. From the extensive hydrodynamic study of CFBs, it was found that the axial suspension density distribution shows the typical S-shape profile along the bed height.…”

“…Furchi et al [10] reported experimental local bed-to-wall heat transfer coefficients for temperatures up to 250°C at which radiation is unimportant. The riser was 72.5 mm in internal diameter, 6.0 m high, with six double-pipes, annular, water-cooled heat exchangers, each 0.93 m high, located one above the other.…”

“…The model uses the particle-based approach and integrates the hydrodynamics and combustion aspects [9]. The study is also validated with experimental data [4,5,[10][11][12][13][14].…”