Lumped parameter analysis criteria for heat transfer in a co-current moving bed with adiabatic walls

In this study, a mathematical method was developed and applied to an existing analytical solution of a model for heat transfer in a co-current diluted moving bed, making it possible to determine criteria for selecting the lumped parameter analysis. This procedure differs from those previously report...

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Bibliographic Details
Published in:Powder technology 2017-07, Vol.317, p.381-390
Main Authors: Bertoli, Sávio L., de Souza, Carolina K., Bastos, Jaci C.S.C., de Almeida, Juliano, de Almeida, Juscelino, Licodiedoff, Silvana, Wiggers, Vinicyus R.
Format: Article
Language:English
Subjects:
Adiabatic
Adiabatic flow
Analytical Solution
Criteria
Dilution
Empirical analysis
Error analysis
Heat Transfer
Lumped Parameter Analysis
Mathematical analysis
Mathematical models
Moving Bed
Moving beds
Physics
Studies
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Summary:In this study, a mathematical method was developed and applied to an existing analytical solution of a model for heat transfer in a co-current diluted moving bed, making it possible to determine criteria for selecting the lumped parameter analysis. This procedure differs from those previously reported, which generally follow an empirical approach or are based on very simplified models of the physics associated with moving beds. In developing the criteria, conditions for the lumped parameter analysis are obtained and error expressions are determined. A comparison between criteria described in the literature and those proposed herein is presented and the results enable a rational understanding of the existing criteria. The mathematical method is very general and could be applied to other problems in the fields of engineering and physics. [Display omitted] •A method to determine criteria for the lumped parameter analysis is proposed.•The method is applied to a heat transfer model of a moving bed with adiabatic walls.•A particle temperature error analysis is carried out.•A scale analysis of the thermal phenomena is performed.•The work clarifies a number of issues concerning a classic engineering problem.
ISSN:0032-5910
1873-328X
DOI:10.1016/j.powtec.2017.05.018