Experimental investigations on the design of a dual-media thermal energy storage with liquid metal

Müller-Trefzer, Franziska; Niedermeier, Klarissa; Daubner, M.; Wetzel, Thomas

doi:10.1016/j.applthermaleng.2022.118619

Cited by 9 publications

(7 citation statements)

References 27 publications

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“…Further information on the experiments and the operational details are given in ref. [15]. The spheres in the storage did not show any changes visible to the naked eye before and after the experiments.…”

Section: Zirconium Silicate As a Filler Materials In A Lab-scale Tesmentioning

confidence: 80%

“…Based on the target application of the materials investigated as a filler in a packed-bed TES, the materials should have a high volumetric heat capacity, low thermal conductivity, high thermal fatigue, and thermal shock resistance, need to be compatible with LBE, and should be low cost, which is explained in more detail in the study by Müller-Trefzer et al [15] The most important criteria for the selection of filler materials are the thermophysical properties and material compatibility. As there are very few data [11,20,21] available regarding the operation of a packed-bed TES with liquid metals as the HTF, a well-defined packed bed was intended to be tested for validation purpose.…”

Section: Selection Of Potential Filler Materials Based On Literature ...mentioning

confidence: 99%

“…[14] Its technical operability on a lab scale was successfully demonstrated at the Karlsruhe Liquid Metal Laboratory (KALLA). [15] However, a major challenge when working with liquid metal is its corrosiveness, which increases with rising temperature. [16,17] Liquid metals can dissolve elements of solid structural material, form intermetallic compounds, or penetrate into the solid structure, leading to a change in the mechanical properties.…”

mentioning

confidence: 99%

“…Furthermore, the temperature measuring technique in a packed-bed TES with LBE will be tested and important design parameters can be derived for larger-scale systems, which is discussed in more detail in ref. [15]. In parallel, material tests (both structural and filler material) for higher temperatures beyond 700 °C will be currently performed, but are not part of this study.…”

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confidence: 99%

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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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Section: Zirconium Silicate As a Filler Materials In A Lab-scale Tesmentioning

confidence: 80%

Section: Selection Of Potential Filler Materials Based On Literature ...mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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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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“…[32][33][34] Recently, a packed-bed storage system with eutectic lead-bismuth as the heat transfer fluid has been demonstrated on a lab-scale (1 kWh) at KIT. A packed bed of ceramic fillers (zirconium silicate) was used with temperatures of up to 380 C. 35 The results showed that such a system is feasible and performs more efficiently than a single-medium thermocline storage tank with lead-bismuth only. Currently, a 100-kWh packed-bed storage system is under construction and will be integrated and tested in a test rig at KALLA at KIT.…”

Section: Heavy Liquid Metal Basedmentioning

confidence: 99%

A perspective on high‐temperature heat storage using liquid metal as heat transfer fluid

Niedermeier

2023

Energy Storage

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Energy storage systems are essential to secure a reliable electricity and heat supply in an energy system with high shares of fluctuating renewable energy sources. Thermal energy storage systems offer the possibility to store energy in the form of heat relatively simply and at low cost. In concentrating solar power systems, for instance, molten salt‐based thermal storage systems already enable a 24/7 electricity generation. The use of liquid metals as heat transfer fluids in thermal energy storage systems enables high heat transfer rates and a large operating temperature range (100°C to >700°C, depending on the liquid metal). Hence, different heat storage solutions have been proposed in the literature, which are summarized in this perspective. Based on these, future technical advances are suggested such as reducing the liquid metal share in the heat storage, using waste material as storage medium or using liquid metal as heat transfer fluids not only in sensible, but in latent or thermochemical energy storage systems. The use of waste material in a packed bed configuration with 5% porosity, for example, can bring down the storage material costs to 2%–3% of the costs of a liquid metal‐only storage system. Furthermore, future application fields beyond concentrating solar power are proposed: supply of industrial process heat, waste heat integration and power‐to‐heat‐to‐power processes.

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High-Temperature Corrosion Behavior of Fe-18Ni-12Cr-2.9Al and Fe-18Ni-12Cr-2.3Al-Nb-C Austenitic Steels Depending on Dissolved Oxygen Concentration in Static Liquid Pb at 700 °C

Tsisar,

Zhou,

Wedemeyer

et al. 2024

High Temperature Corrosion of mater.

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Experimental investigations on the design of a dual-media thermal energy storage with liquid metal

Cited by 9 publications

References 27 publications

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

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

A perspective on high‐temperature heat storage using liquid metal as heat transfer fluid

High-Temperature Corrosion Behavior of Fe-18Ni-12Cr-2.9Al and Fe-18Ni-12Cr-2.3Al-Nb-C Austenitic Steels Depending on Dissolved Oxygen Concentration in Static Liquid Pb at 700 °C

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