Conference article

Modelling of Residential Heating Systems using a Phase Change Material Storage System

Corinna Leonhardt
Institute for Energy Efficient Buildings and Indoor Climate, E.ON Energy Research Center, RWTH Aachen University, Germany

Dirk Müller
Institute for Energy Efficient Buildings and Indoor Climate, E.ON Energy Research Center, RWTH Aachen University, Germany

Download articlehttp://dx.doi.org/10.3384/ecp09430025

Published in: Proceedings of the 7th International Modelica Conference; Como; Italy; 20-22 September 2009

Linköping Electronic Conference Proceedings 43:57, s. 507-512

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Published: 2009-12-29

ISBN: 978-91-7393-513-5

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

Modern heating systems for buildings need a supply temperature of approximately 35 degree Celcius. Standard heat storage systems do not work very efficiently with small supply temperature differences; because of the low sensible heat storage capacity. In contrast to the sensible heat storage a phase change material (PCM) storage system uses the phase change process to store energy at small temperature differences. In this paper a thermo hydraulic model of a PCM storage is developed and imple mented by using Modelica; so that dynamic modelling is possible. To show the advantages of latent heat storage (LHS) the PCM storage model has been combined to build a standard heat pump system model with a PCM storage instead of a sensible water storage and the overall system is analysed.

Keywords

PCM; latent heat storage; heat pump; thermo hydraulic modelling

References

[1] Huchtemann; K. Advanced simulation methods for heat pump systems: Modelica 2009; September 20-22.

[2] Buschle J. Analysis of steam storage systems using Modelica: Modelica 2006; September 4-5.

[3] Fachinformationszentrum Karlsruhe (Hg.) Wärmespeicher: BINE- Informationsdienst; Karlsruhe 2005

[4] Mehling; Cabeza Heat and Cold Storage with PCM: Heat and Mass Transfer; Springer; Berlin 2008

[5] htttp://www.zae-bayern.de/deutsch/abteilung-1/arbeitsgebiete/latentwaermespeicher/einführungg.html (Februar 2009)

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