Recent advances in phase change materials for thermal energy storage

White, Mary Anne; Kahwaji, Samer; Noël, John A.

doi:10.1039/d3cc06063b

Cited by 7 publications

(2 citation statements)

References 96 publications

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“…However, for the design of a LHESS based on transient operation, the (typically) very small thermal conductivity of PCMs (apart from metallic ones and exceptions [14]) are in the order of 0.2 to 0.4 W/m•K [15], leading to limitations on how rapidly heat can be transferred in and out of the storage system, i.e., the "rate problem" [16]. The rate problem is currently more often addressed by designing the heat exchange system used in a LHESS to increase the heat transfer rate to a desired value, for example through the use of additional heat transfer fluid (HTF) passes [5,17], the addition of fins [18][19][20], increasing the contact area [21][22][23], or by favoring close-contact melting during the charging phase [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of a Latent Heat Storage System’s Performance as a Function of the Phase Change Material’s Thermal Conductivity

Belinson,

Groulx

2024

Applied Sciences

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The thermal conductivities of most commonly used phase change materials (PCMs) are typically fairly low (in the range of 0.2 to 0.4 W/m·K) and are an important consideration when designing latent heat energy storage systems (LHESSs). Because of that, material scientists have been asking the following question: “by how much does the thermal conductivity of a PCM needs to be increased to positively impact the design and performance of a LHESS?” The answer to this question is not straightforward as the performance of a LHESS depends on the PCM’s thermal conductivity, other PCM thermophysical properties, the type of heat exchange system geometry used, the mode of operation, and the targeted power/energy storage of the LHESS. This paper presents work related to this question through a numerical study based on a simplified 2D model of an experimental setup studied previously in the authors’ laboratory. A model created in COMSOL Multiphysics, based on conduction and accounting for the solid-liquid phase change process, was initially validated against experimental results and then used to study the impact of the PCM’s thermal conductivity (dodecanoic acid) on the discharging power of the LHESS. The results show that even increasing the thermal conductivity of the PCM by a factor of 50 only leads to a maximum instantaneous power increase by a factor of 2 or 3 depending on the LHESS configurations.

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Section: Introductionmentioning

confidence: 99%

Numerical Study of a Latent Heat Storage System’s Performance as a Function of the Phase Change Material’s Thermal Conductivity

Belinson,

Groulx

2024

Applied Sciences

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“…Solar energy is suggested to be a reliable substitution among the accessible renewable energy sources to overcome the energy crisis. However, its availability during the daytime might be diluted and intermittent [2]. Therefore, to satisfy and overcome such inadequacy, energy storage is a must [3].…”

Section: Introductionmentioning

confidence: 99%

Thermal Energy Storage Using Hybrid Nanofluid Phase Change Material (PCM) Based on Waste Sludge Incorp Rated ZnO/α-Fe2O3

Hassan,

Tony,

Awad

2024

Nanomaterials

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Renewable solar energy storage facilities are attracting scientists’ attention since they can overcome the key issues affecting the shortage of energy. A nanofluid phase change material (PCM) is introduced as a new sort of PCM is settled by suspending small proportions of nanoparticles in melting paraffin. ZnO/α-Fe2O3 nanocrystals were prepared by a simple co-precipitation route and ultrasonically dispersed in the paraffin to be a nanofluid-PCM. The behaviors of the ZnO/α-Fe2O3 nanocrystals were verified by X-ray diffraction (XRD) analysis, and the average particle size and the morphology of the nanoparticles were explored by transmission electron microscopy (TEM). For the object of industrial ecology concept, aluminum-based waste derived from water-works plants alum sludge (AS) is dried and augmented with the ZnO/α-Fe2O3 nanocrystals as a source of multimetals such as aluminum to the composite, and it is named AS-ZnO/α-Fe2O3. The melting and freezing cycles were checked to evaluate the PCM at different weight proportions of AS-ZnO/α-Fe2O3 nanocrystals, which confirmed that their presence enhanced the heat transfer rate of paraffin. The nanofluids with AS-ZnO/α-Fe2O3 nanoparticles revealed good stability in melting paraffin. Additionally, the melting and freezing cycles of nanofluid-PCM (PCM- ZnO/α-Fe2O3 nanoparticles) were significantly superior upon supplementing ZnO/α-Fe2O3 nanoparticles. Nanofluid-PCM contained the AS-ZnO/α-Fe2O3 nanocrystals in the range of 0.25, 0.5, 1.0, and 1.5 wt%. The results showed that 1.0 wt% AS-ZnO/α-Fe2O3 nanocrystals contained in the nanofluid-PCM could enhance the performance with 93% with a heat gained reached 47 kJ.

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Experimental study on improving effect of cooling garment on thermal comfort and salivary IgA concentration

Lin,

Wang,

Yan

et al. 2024

Energy and Buildings

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Recent advances in phase change materials for thermal energy storage

Abstract: Efficient storage of thermal energy can be greatly enhanced by the use of phase change materials (PCMs). The selection or development of a useful PCM requires careful consideration of many...

Cited by 7 publications

References 96 publications

Numerical Study of a Latent Heat Storage System’s Performance as a Function of the Phase Change Material’s Thermal Conductivity

Numerical Study of a Latent Heat Storage System’s Performance as a Function of the Phase Change Material’s Thermal Conductivity

Thermal Energy Storage Using Hybrid Nanofluid Phase Change Material (PCM) Based on Waste Sludge Incorp Rated ZnO/α-Fe2O3

Experimental study on improving effect of cooling garment on thermal comfort and salivary IgA concentration

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