High density polyethylene spheres with PCM for domestic hot water applications: Water tank and laboratory scale study

Lidia Navarro, Camila Barreneche, Albert Castell, David A.G. Redpath, Philip Griffiths, Luisa Cabeza

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Renewable energy is a potential alternative energy provider with fewer CO2 emissions. However, the mismatch between energy supply and demand is the main disadvantage. Therefore, thermal energy storage becomes an essential technology for enhancing renewable energy efficiency and providing energy supply to the end user. In solar thermal energy systems, hot water tanks are widely used as sensible heat storage technology. Moreover, water storage usually requires large volumes and their improvement has been studied in terms of shape and arrangement. Latent heat storage materials are a potential technology for implementation in water storage tanks in order to reduce their volume and to enhance their efficiency. In this paper, the incorporation of shape high density polyethylene spheres with PCM into domestic hot water tanks is studied. Undesired results obtained in the water tank set-up lead the authors to analyse the PCM leakage in the laboratory. Laboratory analysis pointed out that the PCM-spheres must be thermally cycled and cleaned before their implementation in real application of domestic hot water in order to stabilize the PCM content inside the PCM- spheres
Original languageEnglish
Pages (from-to)262-267
JournalJournal of Energy Storage
Volume13
Early online date21 Aug 2017
DOIs
Publication statusE-pub ahead of print - 21 Aug 2017

Keywords

  • Thermal energy storage (TES) Water tank
  • Phase change materials (PCM) Encapsulation
  • Stabilization

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