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dc.contributor.authorZhao, C.Y.
dc.contributor.authorLu, W
dc.contributor.authorTian, Yuan
dc.date.accessioned2013-09-02T14:30:08Z
dc.date.available2013-09-02T14:30:08Z
dc.date.issued2010-08
dc.identifier.citationZhao , C Y , Lu , W & Tian , Y 2010 , ' Heat transfer enhancement for thermal energy storage using metal foams embedded within phase change materials (PCMs) ' , Solar Energy , vol. 84 , no. 8 , pp. 1402–1412 . https://doi.org/10.1016/j.solener.2010.04.022
dc.identifier.issn0038-092X
dc.identifier.otherPURE: 1997967
dc.identifier.otherPURE UUID: 8df5cd2a-066b-4173-be84-10bc89cb615e
dc.identifier.otherScopus: 77954314378
dc.identifier.urihttp://hdl.handle.net/2299/11481
dc.description.abstractIn this paper the experimental investigation on the solid/liquid phase change (melting and solidification) processes have been carried out. Paraffin wax RT58 is used as phase change material (PCM), in which metal foams are embedded to enhance the heat transfer. During the melting process, the test samples are electrically heated on the bottom surface with a constant heat flux. The PCM with metal foams has been heated from the solid state to the pure liquid phase. The temperature differences between the heated wall and PCM have been analysed to examine the effects of heat flux and metal foam structure (pore size and relative density). Compared to the results of the pure PCM sample, the effect of metal foam on solid/liquid phase change heat transfer is very significant, particularly at the solid zone of PCMs. When the PCM starts melting, natural convection can improve the heat transfer performance, thereby reducing the temperature difference between the wall and PCM. The addition of metal foam can increase the overall heat transfer rate by 3–10 times (depending on the metal foam structures and materials) during the melting process (two-phase zone) and the pure liquid zone. The tests for investigating the solidification process under different cooling conditions (e.g. natural convection and forced convection) have been carried out. The results show that the use of metal foams can make the sample solidified much faster than pure PCM samples, evidenced by the solidification time being reduced by more than half. In addition, a two-dimensional numerical analysis has been carried out for heat transfer enhancement in PCMs by using metal foams, and the prediction results agree reasonably well with the experimental data.en
dc.format.extent11
dc.language.isoeng
dc.relation.ispartofSolar Energy
dc.subjectPhase Change Materials
dc.subjectMetal Foams
dc.subjectPorosity
dc.subjectPore size
dc.subjectNon-thermal equilibrium
dc.subjectcharging process
dc.subjectEnergy(all)
dc.subjectEngineering(all)
dc.subjectMaterials Science(all)
dc.subjectEnvironmental Science(all)
dc.titleHeat transfer enhancement for thermal energy storage using metal foams embedded within phase change materials (PCMs)en
dc.contributor.institutionSchool of Engineering and Technology
dc.description.statusPeer reviewed
dc.identifier.urlhttp://scholar.google.co.uk/citations?user=V7VdW6gAAAAJ
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1016/j.solener.2010.04.022
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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