High Power Latent Heat Storages With 3D Wire Structures – Numerical Evaluation Of Phase Change Behavior

Schlott, André; Hörstmann, Judith; Tittes, Knut; Andersen, Olaf; Meinert, Jens

doi:10.1016/j.egypro.2017.09.488

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…If the liquid fraction 𝑓𝑓 𝑎𝑎 was lower than the critical liquid fraction 𝑓𝑓 𝑎𝑎,𝑐𝑐𝑐𝑐𝑖𝑖𝑝𝑝 the heat transfer in the RCmodel was defined by heat conduction and the thermal resistance was calculated according to equation (18). Otherwise, the thermal resistance was reduced by the factor 𝜖𝜖̅ and was calculated according to equation (21):…”

Section: Modelling Based On Free Convectionmentioning

confidence: 99%

“…Anish et al [16] experimentally examined a horizontal shelland-multi-finned tube latent heat storage using erythritol as PCM and analyzed the effect of free convection during melting. Further storage concepts in the temperature range suitable for process heat applications use microcapsules and composite materials [17] or 3D-wire structures in combination with salts and their eutectic mixtures [18]. Zipf et al [19] reported an active latent heat storage concept based on a screw heat exchanger using an eutectic mixture of NaNO3 and KNO3 as PCM.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of RC-model and FEM-model for a PCM-plate storage including free convection

Neumann

Gamisch

Gschwander

2021

Applied Thermal Engineering

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Section: Modelling Based On Free Convectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of RC-model and FEM-model for a PCM-plate storage including free convection

Neumann

Gamisch

Gschwander

2021

Applied Thermal Engineering

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“…The discharge time was reduced by 68% and 25% compared to the longitudinal and radial fins, respectively. Spiral wounded wire structures were numerically evaluated by Schlott et al [24]. It was shown that for increased power the thermal conductivity of the wire and the interconnection between the wires is important.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Investigation of Wire Cloth Heat Exchanger for Latent Heat Storages

2021

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Latent thermal energy storages (LTES) offer a high storage density within a narrow temperature range. Due to the typically low thermal conductivity of the applied phase change materials (PCM), the power of the storages is limited. To increase the power, an efficient heat exchanger with a large heat transfer surface and a higher thermal conductivity is needed. In this article, planar wire cloth heat exchangers are investigated to obtain these properties. They investigated the first time for LTES. Therefore, we developed a finite element method (FEM) model of the heat exchanger and validated it against the experimental characterization of a prototype LTES. As PCM, the commercially available paraffin RT35HC is used. The performance of the wire cloth is compared to tube bundle heat exchanger by a parametric study. The tube diameter, tube distance, wire diameter and heat exchanger distance were varied. In addition, aluminum and stainless steel were investigated as materials for the heat exchanger. In total, 654 variants were simulated. Compared to tube bundle heat exchanger with equal tube arrangement, the wire cloth can increase the mean thermal power by a factor of 4.20 but can also reduce the storage capacity by a minimum factor of 0.85. A Pareto frontier analysis shows that for a free arrangement of parallel tubes, the tube bundle and wire cloth heat exchanger reach similar performance and storage capacities.

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A comprehensive review of the materials degradation phenomena in solid-liquid phase change materials for thermal energy storage

Adesusi

Adetunji

Kuye

et al. 2023

International Journal of Thermofluids

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High Power Latent Heat Storages With 3D Wire Structures – Numerical Evaluation Of Phase Change Behavior

Cited by 3 publications

References 2 publications

Comparison of RC-model and FEM-model for a PCM-plate storage including free convection

Comparison of RC-model and FEM-model for a PCM-plate storage including free convection

Numerical and Experimental Investigation of Wire Cloth Heat Exchanger for Latent Heat Storages

A comprehensive review of the materials degradation phenomena in solid-liquid phase change materials for thermal energy storage

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