A model for heat transfer in a pressurized circulating fluidized bed furnace

摘要

A mechanistic model based on cluster renewal approach is proposed to predict bed to wall heat transfer coefficient in a pressurized circulating fluidized bed (PCFB). The model takes into account the effect of pressure on cluster density, cluster thermal conductivity and particle convection heat transfer coefficient. The effect of pressure and bed temperature on bed to wall heat transfer coefficient is investigated. Published information on cluster velocity and bed hydrodynamics are used in the formulation of the model.