Overall heat transfer coefficient correlations are given for fluidized bed in which vertical tubes are immersed. Correlations available in the literature are surveyed and compared on a consistant basis. Effects of mass flow rate, particle size, solid concentration, solid and fluid thermophysical properties, immersed tube location, bed pressure and packing materials on heat transfer coefficients were summarized. In order to understand the fundamental mechanisms of heat transfer, wall to fluidized bed heat transfer is also reviwed. Those correlations on overall heat transfer coefficients are evaluated and find that the most appropriate one for predicting overall heat transfer coefficients between fluidized bed and vertically immersed tubes is one of Tamarin and Khasanov.