Performance of molten sodium vs. molten salts in a packed bed thermal energy storage

Niedermeier, Klarissa; Marocco, Luca; Flesch, Jonathan; Mohan, Gowtham; Coventry, Joe; Wetzel, Thomas

doi:10.1016/j.applthermaleng.2018.05.080

Cited by 54 publications

(33 citation statements)

References 28 publications

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“…The pressure drop was not considered in this article as a potential loss of efficiency because the order of magnitude is of minor influence compared with the thermal power of storage. This was already shown in a previous work by Niedermeier et al…”

Section: Proposed Systemsupporting

confidence: 86%

“…In particular, the efficiency is defined in a way that allows a direct comparison with a two‐tank system. This model has been preliminarily validated using literature data with solar salt as a HTF, as reported recently in a previous study by Niedermeier et al, in the absence of experimental data with LMs.…”

Section: Discussionmentioning

confidence: 62%

“…Some relevant trends have been identified in a previous study by Niedermeier et al on the sensitivity of the overall performance with respect to several parameters, e.g., porosity, H / D ratio of the storage tank, and particle size.…”

Section: Optimization: Parametric Studymentioning

confidence: 66%

“…A preliminary validation of the model described in Section has been presented by Niedermeier et al In the absence of currently available experimental data with LMs, published experiments with solar salt and thermal oil, as given in previous studies, have been used. Good agreement with the experimental data has been obtained, with minor differences attributed to uncertainties and challenges in the experiments, as well as simplifications of the mathematical model to reduce computational effort, e.g., constant physical properties.…”

Section: Reference Scenariomentioning

confidence: 99%

“…By using LMs as HTFs, higher storage temperatures can be achieved, what makes the application of advanced power cycles possible to reach higher efficiencies . This study is based on the work of Niedermeier et al and investigates additional storage parameters and their influence on energy efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic Analysis of High‐Temperature Energy Storage Concepts Based on Liquid Metal Technology

et al. 2019

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Within the thermal energy storage (TES) initiative NAtional Demonstrator for IseNtropic Energy storage (NADINE), three projects have been conducted, each focusing on TES at different temperature levels. Herein, technical concepts for using liquid metal technology in innovative high‐temperature TES systems are dealt with. This approach implies some challenges; first, the unit costs are relatively large which makes a reduction of the mass inventory necessary. Second, the high thermal diffusivity, which is beneficial in any heat exchanger unit, reduces the efficiency in a single‐tank TES due to the fast degradation of the thermocline. These limitations can be overcome using a nonexpensive solid filler material, and, if properly designed, similar performance as in state‐of‐the‐art molten salt systems can be obtained, while maintaining the advantage of operating at temperatures well beyond their upper limit. Optimization strategies are presented for a reference case including transient behavior of the whole system. The sensitivity of multiple parameters, e.g., porosity, particle size, and influence of storage capacity regarding the discharge efficiency, is investigated.

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Section: Proposed Systemsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 62%

Section: Optimization: Parametric Studymentioning

confidence: 66%

Section: Reference Scenariomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Thermodynamic Analysis of High‐Temperature Energy Storage Concepts Based on Liquid Metal Technology

et al. 2019

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Reactive Metals as Energy Storage and Carrier Media

Ersoy

Baumann

Weil

et al. 2023

Sustainable Energy Storage in the Scope of Circular Economy

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Screening of Filler Material for a Packed‐Bed Thermocline Energy Storage Test Facility with Lead–Bismuth Eutectic as the Heat Transfer Fluid

Müller‐Trefzer,

Heinzel,

Hesse

et al. 2023

Energy Tech

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Suitable solid filler materials are investigated for use in a packed‐bed heat storage test facility for high temperatures with lead–bismuth eutectic (LBE) as the heat transfer fluid. Accordingly, first, the thermophysical properties of six different candidate materials, two glasses and four ceramics, are determined. The density and heat capacity are measured experimentally and the thermal conductivity is discussed based on literature data. Subsequently, a static corrosion test is performed at 500 °C for 1 and 4 weeks in LBE under reducing conditions. The glasses are found to be unsuitable due to corrosion attack. Among the ceramics, zirconium silicate and zirconium oxide are identified to be highly resistant to corrosion. Zirconium silicate is subsequently also successfully tested as a storage material in a laboratory experiment under cyclic conditions.

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Performance of molten sodium vs. molten salts in a packed bed thermal energy storage

Cited by 54 publications

References 28 publications

Thermodynamic Analysis of High‐Temperature Energy Storage Concepts Based on Liquid Metal Technology

Thermodynamic Analysis of High‐Temperature Energy Storage Concepts Based on Liquid Metal Technology

Reactive Metals as Energy Storage and Carrier Media

Screening of Filler Material for a Packed‐Bed Thermocline Energy Storage Test Facility with Lead–Bismuth Eutectic as the Heat Transfer Fluid

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