Submerged finned heat exchanger latent heat storage design and its experimental verification
2012 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 93, no SI, 507-516 p.Article in journal (Refereed) Published
Thermal energy storage (TES) has shown potential in improving the overall performance in energy systems, through shifting of thermal load demand, and through matching of uneven energy availability in time and in space. Latent heat TESs demonstrate advantages over sensible heat TESs for their high storage density and small temperature swing; however, lack of accurate knowledge in novel material properties and lack in a holistic design protocol often lead to difficulties in reaching technically viable storage design. With the aim of proposing a sound latent heat based TES design-to-validation protocol, this paper covers material property characterization through Temperature-history (T-history) method, heat exchanger design through heat transfer modeling, and model validation through experimental verification. A model for submerged cylindrically finned heat exchanger latent heat storage unit with phase change material was built. The results show that performance of gelled salt-hydrate based TES can be assessed with a pure conduction based model. This material property characterization-to-model verification approach may serve as a standard in providing accurate storage design for performance evaluation.
Place, publisher, year, edition, pages
2012. Vol. 93, no SI, 507-516 p.
PCM, Energy Storage, T-History, Heat Transfer Enhancement, modeling
Research subject SRA - Energy
IdentifiersURN: urn:nbn:se:kth:diva-34261DOI: 10.1016/j.apenergy.2011.12.019ISI: 000302836500059ScopusID: 2-s2.0-84857996845OAI: oai:DiVA.org:kth-34261DiVA: diva2:419985
ProjectsCold Thermal Energy Storage
QC 201205242011-05-302011-05-302013-03-12Bibliographically approved