dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorThomeo, J. C.
dc.creatorFreire, J. T.
dc.date2014-05-20T15:23:59Z
dc.date2016-10-25T17:58:01Z
dc.date2014-05-20T15:23:59Z
dc.date2016-10-25T17:58:01Z
dc.date2000-06-01
dc.date.accessioned2017-04-05T23:44:42Z
dc.date.available2017-04-05T23:44:42Z
dc.identifierChemical Engineering Science. Oxford: Pergamon-Elsevier B.V., v. 55, n. 12, p. 2329-2338, 2000.
dc.identifier0009-2509
dc.identifierhttp://hdl.handle.net/11449/34644
dc.identifierhttp://acervodigital.unesp.br/handle/11449/34644
dc.identifier10.1016/S0009-2509(99)00465-0
dc.identifierWOS:000086159600019
dc.identifierhttp://dx.doi.org/10.1016/S0009-2509(99)00465-0
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/878522
dc.descriptionStudies have been carried out on the heat transfer in a packed bed of glass beads percolated by air at moderate flow rates. Rigorous statistic analysis of the experimental data was carried out and the traditional two parameter model was used to represent them. The parameters estimated were the effective radial thermal conductivity, k, and the wall coefficient, h, through the least squares method. The results were evaluated as to the boundary bed inlet temperature, T-o, number of terms of the solution series and number of experimental points used in the estimate. Results indicated that a small difference in T-o was sufficient to promote great modifications in the estimated parameters and in the statistical properties of the model. The use of replicas at points of high parametric information of the model improved the results, although analysis of the residuals has resulted in the rejection of this alternative. In order to evaluate cion-linearity of the model, Bates and Watts (1988) curvature measurements and the Box (1971) biases of the coefficients were calculated. The intrinsic curvatures of the model (IN) tend to be concentrated at low bed heights and those due to parameter effects (PE) are spread all over the bed. The Box biases indicated both parameters as responsible for the curvatures PE, h being somewhat more problematic. (C) 2000 Elsevier B.V. Ltd. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationChemical Engineering Science
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectheat transfer
dc.subjectporous media
dc.subjectpacked beds
dc.subjectpseudo-homogeneous model
dc.subjectparameter estimation
dc.subjectmodel non-linearity
dc.titleHeat transfer in fixed bed: a model non-linearity approach
dc.typeOtro


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