Collect. Czech. Chem. Commun. 1983, 48, 2484-2493

On the observability of heat dispersion parameters of the pseudohomogeneous model of heat transfer in packed beds

Vladimír Staněk and Petr Vychodil

Institute of Chemical Process Fundamentals, Czechoslovak Academy of Sciences, 165 02 Prague 6-Suchdol


Solution has been obtained of the pseudohomogeneous model of heat dispersion in a packed bed under simultaneous radial and axial dispersion of heat using Danckwerts' boundary condition. The obtained solution has been used to evaluate parameters of the model from experimental data based on the least sum of square deviations of the temperature profiles. Maps have been constructed of the joint confidence regions in the parameter domain. The results have shown the method to be suitable for the determination of radial thermal dispersion while suppressing the effects of structural disturbances of the bed near the containing walls.