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Type: Artigo de periódico
Title: Thermal analysis of a rotary regenerator with fixed pressure drop or fixed pumping power
Author: Mioralli, PC
Ganzarolli, MM
Abstract: Heat transfer in a rotary regenerator subject to constant pressure drops or pumping power constraints was examined. The fluid flow and the convective heat transfer coefficient were determined from correlations. These results were used as inputs for a numerical solution which was applied to evaluate the regenerator's thermal performance. A scale analysis was conducted to determine the order of magnitude of optimal porosity and maximum heat transfer. This analysis suggests the best scales to present heat transfer and heat capacity rate in dimensionless form. It was found that, for a given dimensionless pressure drop or pumping power, there is a level of porosity that maximizes the heat transfer rate. The scale analysis of power law predictions showed good agreement with numerical results. Diagrams are presented with curves of optimal operating conditions for the prescribed constraints for typical rotary regenerators with both streams under the laminar flow regime. (C) 2012 Elsevier Ltd. All rights reserved.
Subject: Rotary regenerator
Heat transfer
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/j.applthermaleng.2012.11.030
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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