Pore-scale visualization and measurement of paraffin melting in high porosity open-cell copper foam

Yao, Yuanpeng; Wu, Huiying; Liu, Zhenyu; Gao, Zeshi

doi:10.1016/j.ijthermalsci.2017.09.011

Cited by 46 publications

(19 citation statements)

References 31 publications

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“…Zhang et al [20] and Yao et al [55] applied the infrared camera to capture the evolution of the whole temperature field.…”

Section: Experimental Apparatusmentioning

confidence: 99%

“…With regard to the phase interface, the conventional camera was widely utilized to capture the solid/liquid interface. Some researchers also employed a high definition (HD) camera to obtain higher quality images [36,41,48,55]. After images of phase interface being processed, some other parameters, such as melting/solidification fraction and rate, can be obtained.…”

Section: Experimental Apparatusmentioning

confidence: 99%

“…It was found that the temperature difference between the porous support and PCM became more pronounced as the phase change proceeded. Yao et al[55] investigated the melting process of paraffin/copper foam with the assistance of an infrared camera. Their results showed that the copper foam improved the temperature distribution uniformity and increased the melting rate by 2 times.…”

mentioning

confidence: 99%

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A review of phase change heat transfer in shape-stabilized phase change materials (ss-PCMs) based on porous supports for thermal energy storage

Zhang

Feng

Shi

et al. 2021

Renewable and Sustainable Energy Reviews

362

107

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Latent heat thermal energy storage (LHTES) uses phase change materials (PCMs) to store and release heat, and can effectively address the mismatch between energy supply and demand. However, it suffers from low thermal conductivity and the leakage problem. One of the solutions is integrating porous supports and PCMs to fabricate shape-stabilized phase change materials (ss-PCMs). The phase change heat transfer in porous ss-PCMs is of fundamental importance for determining thermalfluidic behaviours and evaluating LHTES system performance. This paper reviews the Highlights: 1. The recent advances in experimental and numerical investigations on phase change heat transfer in porous ss-PCMs are reviewed. 2. Paraffin and metal foams are the mostly used PCM and porous support respectively in the experimental studies. 3. Compared to REV-scale simulation, the pore-scale simulation can provide extra flow and heat transfer characteristics in pores. 4. There exists a research gap between phase change heat transfer and material preparation.

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“…Zhang et al [20] and Yao et al [55] applied the infrared camera to capture the evolution of the whole temperature field.…”

Section: Experimental Apparatusmentioning

confidence: 99%

Section: Experimental Apparatusmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

A review of phase change heat transfer in shape-stabilized phase change materials (ss-PCMs) based on porous supports for thermal energy storage

Zhang

Feng

Shi

et al. 2021

Renewable and Sustainable Energy Reviews

362

107

View full text Add to dashboard Cite

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“…There is a large difference in thermophysical properties between metal foam and saturating PCM [18]. There are two non-equilibrium equations:…”

Section: Mathematical Modelmentioning

confidence: 99%

A numerical investigation of the effects of metal foam characteristics and heating/cooling conditions on the phase change kinetic of phase change materials embedded in metal foam

Idi

Karkri

2019

Journal of Energy Storage

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“…The pore size of the melting process was visualized by using the infrared thermal imager, and the transient evolution of the pore size temperature field at typical moments of the smelting process was observed by using the infrared thermal imager. Yao et al [8] conducted visual experimental research on the melt phase transition of paraffin in high-porosity open-cell copper foam of pore size. With the help of high-definition camera and infrared thermography, the phase-field and temperature field of paraffin foam and pure paraffin were collected, and the melting process was observed intuitively.…”

Section: Introductionmentioning

confidence: 99%

Division of paraffin melting zone based on multiscale experiments

Liu

TianYu

et al. 2022

Therm sci

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Phase change energy storage materials are widely used in the field of renewable energy. Paraffin is one of the common phase change energy storage materials. As a multi-component hydrocarbon mixture, the melting of paraffin is different from that of pure substance. In addition to the solid and liquid zones, there is also a fuzzy zone in which solid and liquid coexist. In this paper, the melting characteristics of paraffin in phase transition zone are studied by multi-scale experiments. Through the visualization experiment of square cavity paraffin melting, the solid zone, fuzzy zone and liquid zone are determined, and the moving process of phase interface is tracked by digital pictures and infrared heat maps. The evolution process of the pore structure in the fuzzy zone under different temperatures is photographed by means of the micro experiment, and it is revealed that there are two areas in the fuzzy zone, porous media area and multiphase flow area. The results show that the melting process of paraffin can be divided into four zones: liquid zone, multiphase flow zone, porous media zone and solid phase zone. According to the polarizing optical microscopy (POM) picture, the continuous phase and discrete phase transition relationship between solid wax crystal and liquid paraffin is captured. The POM picture is statistically analyzed, and the critical liquid phase ratio of the transition from porous media area to multiphase flow area is given under experimental conditions.

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Pore-scale visualization and measurement of paraffin melting in high porosity open-cell copper foam

Cited by 46 publications

References 31 publications

A review of phase change heat transfer in shape-stabilized phase change materials (ss-PCMs) based on porous supports for thermal energy storage

A review of phase change heat transfer in shape-stabilized phase change materials (ss-PCMs) based on porous supports for thermal energy storage

A numerical investigation of the effects of metal foam characteristics and heating/cooling conditions on the phase change kinetic of phase change materials embedded in metal foam

Division of paraffin melting zone based on multiscale experiments

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