Show simple item record

dc.contributor.authorGasia, Jaume
dc.contributor.authorMaldonado, José Miguel
dc.contributor.authorGalati, Francesco
dc.contributor.authorDe Simone, Marilena
dc.contributor.authorCabeza, Luisa F.
dc.description.abstractThis paper experimentally studies and compares the addition of fins and the addition of metal wool in a latent heat thermal energy storage (TES) system as heat transfer enhancement techniques. Despite the well-known suitability of fins as enhancement technique, their implementation cost in the TES system is one of its main drawbacks. Therefore, the objective of this study is to evaluate the potential of adding a cheap and commercially available metallic wool in order to overcome the abovementioned drawback. In particular, four different latent heat TES systems based on the shell-and-tube heat exchanger concept were designed using n-octadecane as phase change material (PCM). One of them was used as a reference, while in the remaining configurations the heat transfer surface was increased by means of seventeen rectangular fins and by means of metallic wool arbitrarily distributed within the PCM and compacted in a finned shape. Charging and discharging processes with constant heat transfer fluid temperature and flow rate were evaluated from the temperature and heat transfer points of view. Results were focused on the metal wool because is a cheap and handmade solution which can be implemented in an already made heat exchanger. The addition of metal wool showed an enhancement, during the charge, higher than 10% when it was arbitrarily distributed, while compacting the metal wool in a finned shape showed practically no improvement. During the discharge, both metal wool configurations allowed minimal improvements.
dc.description.sponsorshipThe work was partially funded by the Spanish government (ENE2015-64117-C5-1-R (MINECO/FEDER)). The authors would like to thank the Catalan Government for the quality accreditation given to their research group (2017 SGR 1537). GREA is certified agent TECNIO in the category of technology developers from the Government of Catalonia. Jaume Gasia would like to thank the Departament d'Universitats, Recerca i Societat de la Informació de la Generalitat de Catalunya for his research fellowship (2018 FI_B2 00100). José Miguel Maldonado would like to thank the Spanish Government for his research fellowship (BES-2016-076554). Francesco Galati would like to thank the Erasmus+ Programme: Traineeship Bet for Jobs for his research fellowship.
dc.relation.isformatofVersió postprint del document publicat a:
dc.relation.ispartofEnergy Conversion and Management, 2019, vol. 184, p. 530-538
dc.rightscc-by-nc-nd (c) Elsevier, 2019
dc.subjectThermal energy storage (TES)
dc.subjectPhase change material (PCM)
dc.subjectMetal wool
dc.subjectHeat exchanger
dc.titleExperimental evaluation of the use of fins and metal wool as heat transfer enhancement techniques in a latent heat thermal energy storage system

Files in this item


This item appears in the following Collection(s)

Show simple item record

cc-by-nc-nd (c) Elsevier, 2019
Except where otherwise noted, this item's license is described as cc-by-nc-nd (c) Elsevier, 2019