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Effect of porous media on the heat transfer enhancement for a thermal energy storage unit
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2018 (English)In: Energy Procedia, Elsevier Ltd , 2018, p. 984-989Conference paper, Published paper (Refereed)
Abstract [en]

Thermal energy storage (TES) can effectively recover thermal energy from low-temperature waste heat and it has now been received increasing attentions in practical engineering applications. Nevertheless, the relatively low thermal conductivity of engineering available phase change materials (PCMs) greatly limits the energy efficiency of TES applications. To enhance the phase change process, open-cell metal foam with a porosity of 0.94 and pore density of 15 PPI (pore per inch) was employed to be inserted either in heat transfer fluid (HTF) or in phase change material (PCM). A two-dimensional axis-symmetric problem was numerically solved and was validated through comparing temperature history at selected points. Results demonstrated that the involvement of open-cell metal foam can effectively enhance the phase change heat transfer, greatly reducing the full melting time. By comparing the four cases (without metal foam, inserting metal foam into HTF, PCM and both domains), the case that both HTF and PCM domains were embedded with porous media can provide the best heat transfer enhancement, from which practical applications with thermal engineering may benefit.

Place, publisher, year, edition, pages
Elsevier Ltd , 2018. p. 984-989
Keywords [en]
Metal foam, Numerical simulation, Phase change materials, Shell and tube exchangers, Thermal energy storage, Carbon capture, Computer simulation, Energy efficiency, Heat storage, Heat transfer coefficients, Metal foams, Metals, Storage (materials), Temperature, Thermal conductivity, Thermal energy, Thermal Engineering, Waste heat, Heat Transfer enhancement, Low thermal conductivity, Low-temperature waste heats, Open-cell metal foams, Phase change heat transfer, Phase change process, Practical engineering applications
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-247453DOI: 10.1016/j.egypro.2018.09.104Scopus ID: 2-s2.0-85058212859OAI: oai:DiVA.org:kth-247453DiVA, id: diva2:1313298
Conference
2018 Applied Energy Symposium and Forum, Carbon Capture, Utilization and Storage, CCUS 2018, 27 June 2018 through 29 June 2018
Note

QC20190502

Available from: 2019-05-03 Created: 2019-05-03 Last updated: 2019-05-03Bibliographically approved

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Publisher's full textScopushttp://applied-energy.org/ccus2018/

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Yan, Jinyue

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  • apa
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