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Numeric modeling of a compact high temperature heat exchanger

Smirnova, Olena and Fend, Thomas and Schöllgen, Daniel (2011) Numeric modeling of a compact high temperature heat exchanger. In: COMSOL Coference 2011 Proceedings. COMSOL Conference Stuttgart 2011, 26.-28. Okt.2011, Stuttgart, Deutschland.

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Abstract

The numeric investigations of a high temperature compact gas/gas heat exchanger are shown in this paper. The results of the numeric modelling and their analysis for two different simulation models with and without the regards of the development of the velocity field are presented in the article. The results have been obtained for two different geometries one of which is the two semi-channels model and second of which regards the heat transfer through the heat exchanger volume. The article presents the comparison of the model solutions with the evaluation of the received reliability results. The comparison between the simulations and experimental results are presented too. On the base of the second numeric model the two-dimensional simulation task with the regard of the inlet and outlet volume before and after the heat exchanger was developed. The influence of the change of the channel sizes on the hydraulic and thermal characteristics of the researched heat exchanger is shown. The solution of this two dimensional model confirms the inhomogeneous distribution of the hydraulic and thermal fields in the heat exchanger. The obtained results were analyzed with the conclusions and further investigations complete the represented results. “COMSOL-Multiphysics” was used for the numeric simulation.

Document Type:Conference or Workshop Item (Paper, Poster)
Title:Numeric modeling of a compact high temperature heat exchanger
Authors:
AuthorsInstitution or Email of Authors
Smirnova, Olenaolena.smirnova@dlr.de
Fend, Thomasthomas.fend@dlr.de
Schöllgen, Danieldaniel.schöllgen@dlr.de
Date:26 October 2011
Journal or Publication Title:COMSOL Coference 2011 Proceedings
Status:Published
Keywords:compact heat exchanger, heat transfer coefficient, high temperature, heat carrier
Event Title:COMSOL Conference Stuttgart 2011
Event Location:Stuttgart, Deutschland
Event Type:international Conference
Event Dates:26.-28. Okt.2011
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:E SF - Solar research (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Applikationsentwicklung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research
Deposited By: Olena Smirnova
Deposited On:12 Dec 2011 13:14
Last Modified:12 Dec 2013 21:24

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