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Vogel, Julian and Felbinger, Jonina and Johnson, Maike (2016) Natural convection melting in a high temperature flat plate latent heat storage system: Parameter study of enclosure dimensions. INNOSTORAGE 2016: Advances in Thermal Energy Storage, 16.-18.02.2016, Be'er-Sheva, Israel.
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Abstract
The impact of natural convection melting in a high temperature flat plate latent heat thermal energy storage system is studied numerically. The storage material is the eutectic mixture of sodium nitrate and potassium nitrate (KNO3-NaNO3). A parameter study on storage material enclosure dimensions is conducted for various widths and heights. Low to very high aspect ratios between 0.5 and 40 and Rayleigh numbers from 1.2·10^4 to 1.6·10^6 are obtained. The liquid phase fraction evolution with time is scaled to non-dimensional form and the impact of natural convection on the heat flux is shown with a convective enhancement factor that is the ratio of heat flux to a hypothetical heat flux only by conduction. The results can be used for future design optimizations considering the effect of natural convection.
| Item URL in elib: | https://elib.dlr.de/103277/ | ||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||
| Title: | Natural convection melting in a high temperature flat plate latent heat storage system: Parameter study of enclosure dimensions | ||||||||||||
| Authors: |
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| Date: | 16 February 2016 | ||||||||||||
| Refereed publication: | No | ||||||||||||
| Open Access: | Yes | ||||||||||||
| Gold Open Access: | No | ||||||||||||
| In SCOPUS: | No | ||||||||||||
| In ISI Web of Science: | No | ||||||||||||
| Status: | Published | ||||||||||||
| Keywords: | High temperature flat plate latent heat storage, Phase change material (PCM), Melting and solidification, Natural Convection, Rectangular enclosures, Numerical Simulation | ||||||||||||
| Event Title: | INNOSTORAGE 2016: Advances in Thermal Energy Storage | ||||||||||||
| Event Location: | Be'er-Sheva, Israel | ||||||||||||
| Event Type: | international Conference | ||||||||||||
| Event Dates: | 16.-18.02.2016 | ||||||||||||
| Organizer: | Ben-Gurion University of the Negev | ||||||||||||
| HGF - Research field: | Energy | ||||||||||||
| HGF - Program: | Storage and Cross-linked Infrastructures | ||||||||||||
| HGF - Program Themes: | Thermal Energy Storage | ||||||||||||
| DLR - Research area: | Energy | ||||||||||||
| DLR - Program: | E EV - Energy process technology | ||||||||||||
| DLR - Research theme (Project): | E - Thermochemical Processes (Storage) (old) | ||||||||||||
| Location: | Stuttgart | ||||||||||||
| Institutes and Institutions: | Institute of Engineering Thermodynamics > Thermal Process Technology | ||||||||||||
| Deposited By: | Vogel, Julian | ||||||||||||
| Deposited On: | 03 Mar 2016 09:49 | ||||||||||||
| Last Modified: | 31 Jul 2019 20:00 |
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