In the concerned paper, tube dimensions have been taken from the experimental set-up drawings. Recently, during Wilson plot calibration tests, after extension of the operating range of the set-up, came to light that the tube sizes used were slightly different from what was stated in the drawings. Consequently, published experimental fluidized bed heat transfer coefficients are up to 40% too low and some conclusions had to be adapted. The new, correct experimental heat transfer results show a much better agreement with heat transfer models in literature. The authors of the subjected paper deeply regret the errors. Corrected versions of Sections 4 and 5 of the paper are presented here. (c) 2005 Elsevier Ltd. All rights reserved.