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Technical performance assessment of phase change material components

Title data

Lazaro, Ana ; Delgado, Monica ; König-Haagen, Andreas ; Höhlein, Stephan ; Diarce, Gonzalo:
Technical performance assessment of phase change material components.
2019
Event: IEA SHC International Conference on Solar Heating and Cooling for Buildings and Industry 2019 , 3.-7. Nov. 2019 , Santiago, Chile.
(Conference item: Conference , Paper )
DOI: https://doi.org/10.18086/swc.2019.22.05

Official URL: Volltext

Abstract in another language

Thermal energy storage systems using phase change materials (PCM) should meet the application requirements in terms of technical and economical parameters. The storage capacity and storage density are the two main parameters for the selection of a suitable storage material. However, among the technical parameters, high thermal power is one of the most challenging characteristics for a PCM thermal storage. Most of the materials currently used as PCM have intrinsically low thermal conductivity; therefore, the component design has to compensate this. This paper presents a definition of a set of parameters to describe PCM heat exchangers in terms of capacity and density. Furthermore, a power performance assessment is proposed based on the analysis of the results obtained for different storage systems based on the same geometry. A validated numerical model is used to assess the suitability of the proposed parameters to compare PCM systems with different configurations and operation conditions. The influence of Biot number, Stefan number, HTF volume and NTU(varied by different mass flows) on the proposed parameters is studied.

Further data

Item Type: Conference item (Paper)
Refereed: Yes
Keywords: Thermal energy storage; Phase change material; Performance; Power; Overall heat transfer coefficient
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Engineering Thermodynamics and Transport Processes
Faculties > Faculty of Engineering Science > Chair Engineering Thermodynamics and Transport Processes > Chair Engineering Thermodynamics and Transport Processes - Univ.-Prof. Dr.-Ing. Dieter Brüggemann
Profile Fields > Emerging Fields > Energy Research and Energy Technology
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 09 Nov 2020 08:24
Last Modified: 09 Nov 2020 08:24
URI: https://eref.uni-bayreuth.de/id/eprint/59296