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Computational efficiency in numerical modelling of high temperature latent heat storage: Comparison of selected software tools based on experimental data

Pointner, Harald and De Gracia, Alvaro and Vogel, Julian and Tay, N.H.S. and Liu, Ming and Johnson, Maike and Cabeza, Luisa F. (2015) Computational efficiency in numerical modelling of high temperature latent heat storage: Comparison of selected software tools based on experimental data. Applied Energy, 161, pp. 337-348. Elsevier. DOI: 10.1016/j.apenergy.2015.10.020 ISSN 0306-2619

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Official URL: http://dx.doi.org/10.1016/j.apenergy.2015.10.020

Abstract

In this article, four different numerical models for the investigation of phase change processes within latent heat storage are described and compared concerning accuracy, convergence behavior and computational efficiency. The models are based on different types of discretization, make use of different ways to model phase change and are implemented with C, MATLAB or ANSYS CFX. After a brief introduction into each investigated numerical model, the experimental reference setup is described. It consists of a flat plate latent heat storage with the eutectic mixture NaNO3 (46 wt%)–KNO3 (54 wt%) with a measured melting temperature of 219.5 �C as storage material. Based on the corresponding simulation model developed in this paper, the comparison of the numerical models is achieved. This methodology allows the investigation of the numerical performance of different software tools in the context of high temperature latent heat storage that was not achieved thus far. All four numerical models show good agreement to experimental results but differ significantly in speed and convergence behavior.

Item URL in elib:https://elib.dlr.de/98801/
Document Type:Article
Title:Computational efficiency in numerical modelling of high temperature latent heat storage: Comparison of selected software tools based on experimental data
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pointner, Haraldharald.pointner (at) dlr.deUNSPECIFIED
De Gracia, AlvaroGREA Innovació ConcurrentUNSPECIFIED
Vogel, Julianjulian.vogel (at) dlr.deUNSPECIFIED
Tay, N.H.S.Barbara Hardy InstituteUNSPECIFIED
Liu, MingBarbara Hardy InstituteUNSPECIFIED
Johnson, Maikemaike.johnson (at) dlr.deUNSPECIFIED
Cabeza, Luisa F.GREA Innovació ConcurrentUNSPECIFIED
Date:2015
Journal or Publication Title:Applied Energy
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:161
DOI :10.1016/j.apenergy.2015.10.020
Page Range:pp. 337-348
Publisher:Elsevier
ISSN:0306-2619
Status:Published
Keywords:Latent heat storage Numerical simulation Efficiency C MATLAB ANSYS CFX
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Energy-efficient Processes (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Thermochemical Processes (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Pointner, Harald
Deposited On:02 Dec 2015 08:35
Last Modified:06 Sep 2019 15:21

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