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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, 2016-02-16 - 2016-02-18, 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 Start Date: | 16 February 2016 | ||||||||||||||||
| Event End Date: | 18 February 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: | 24 Apr 2024 20:08 |
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