1. Hydrodynamics of a fluidized bed with immersed surfaces 2. Methods and experimental facilities for the study of combustion and heat transfer processes in fluidized bed furnaces 3. Heat exchange of ribbed tubes in a fluidized bed of large particles in relation to the conditions of fuel combustion 4. Heat transfer, aerodynamic resistance and erosion wear of bundles of ribbed tubes in a fluidized bed of large particles 5. Intensification of heat exchange between a fluidized bed and a bundle of horizontal tubes