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
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http://dx.doi.org/10.3384/ecp09430025Published in: Proceedings of the 7th International Modelica Conference; Como; Italy; 20-22 September 2009
Linköping Electronic Conference Proceedings 43:57, p. 507-512
Published: 2009-12-29
ISBN: 978-91-7393-513-5
ISSN: 1650-3686 (print), 1650-3740 (online)
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.
