Dependence of Heat-Transfer coefficient for immersed surfaces in a gas-fluidized bed on pressure

摘要: Abstract The correlations and theories developed for the prediction of heat-transfer coefficients immersed surfaces in fluidized beds are examined their applicability appropriateness at different pressures. It is found that pressure dependence minimum fluidization velocity coefficient ‘small’ ‘large’ particle systems can be reconciled with an adequate interpretation available model expressions on basis a recently proposed classification scheme. latter utilizes concept Archimedes number to provide scheme which interprets particles into categories, keeping both hydrodynamic thermal behaviors bed consistent each other same time. Good agreement experimental data appropriate demonstrated.