Effect of geometric parameter and nanoparticles on PCM melting in a vertical shell-tube system

Nie, Changda; Liu, Jiangwei; Deng, Shengxiang

doi:10.1016/j.applthermaleng.2020.116290

Cited by 47 publications

(8 citation statements)

References 45 publications

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“…Therefore, there is a wide scope of novelty in studying nano-enhanced PCMs not only with multiple PCMs but with other techniques as well. Jamalabadi, 2021;Abdulateef et al, 2021;Algarni et al, 2020;Aqib et al, 2020;Badakhsh et al, 2018;Barreneche et al, 2019;Bashar & Siddiqui, 2018;Dastmalchi & Boyaghchi, 2020;Elbahjaoui & el Qarnia, 2017a, 2017bFarsani et al, 2017;Ghafari et al, 2021;Ghalambaz et al, 2017;Javadi et al, 2020;Khatibi et al, 2021;Liang & Chen, 2018;Maher et al, 2021;Marcos et al, 2020;Murugan et al, 2018;Nazlı Temel & Yes ¸im Çiftçi, 2018;Nie et al, 2021;Nitsas & Koronaki, 2020;…”

Section: Nano-enhanced Pcmsmentioning

confidence: 99%

A review of phase change materials and heat enhancement methodologies

Saqib

Andrzejczyk

2022

WIREs Energy & Environment

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Phase change materials (PCMs) are an efficient alternative to store and release heat at a specific range of temperature. Here PCMs and heat enhancement methodologies for PCM storage are reviewed. A short overview of PCMs and their applications is presented in addition to the progress during the last 10 years. Heat enhancement techniques, that is, extended surfaces, multiple and composite PCMs, and encapsulation techniques, are presented along with a statistical overview of studies during 2016-2021. The importance of various fin and storage tank geometries (extended surfaces) is discussed in detail. Advancement in the latest heat enhancement techniques such as use of nano-enhanced PCMs is presented. Recommendations for future research are provided.

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Section: Nano-enhanced Pcmsmentioning

confidence: 99%

A review of phase change materials and heat enhancement methodologies

Saqib

Andrzejczyk

2022

WIREs Energy & Environment

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“…They concluded that an increase in the concentration of nanoparticles led to a higher maximum peak temperature, which improved PCM charging and discharging. The two-dimensional charging process of vertical shell-tube LHS system with different fluid injection orientations was numerically analysed by using the FVM by Nie et al (2021). They observed that heat transfer is stronger for the top side of the system.…”

Section: Introductionmentioning

confidence: 99%

A numerical study on the effects of inclination angle and container material on thermal energy storage by phase change material in a thick-walled disc

Kiyak,

Oztop,

Aksoy

2024

HFF

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Purpose The purpose of this study is to examine the effects of inclination angle on the thermal energy storage capability of a phase change material (PCM) within a disc-shaped container. Different container materials are also tested such as plexiglass and aluminium. This study aims to assess the energy storage capacity, melting behaviour and temperature distributions of PCM with a specific melting range (22°C–26°C) for various governing parameters such as inclination angles, aspect ratios (AR) and temperature differences (ΔT) and compare the melting behaviour and energy storage performance of PCM in aluminium containers to those in plexiglass containers. Design/methodology/approach A finite volume approach was adopted to evaluate the thermal energy storage capability of PCMs. Five inclination angles ranging from 0° to 180° were considered and the energy storage capacity. Also, the melting behaviour of the PCM and temperature distributions of the container with different materials were tested. Two different AR and ΔT values were chosen as parameters to analyse for their effects on the melting performance of the PCM. Conjugate heat transfer problem is solved to see the effects of conduction mode of heat transfer. Findings The results of the study indicate that as AR decreases, the effect of the inclination angles on the energy storage capacity of the PCM decreases. For lower ΔT, the difference between the maximum and minimum stored energies was 20.88% for AR = 0.20, whereas it was 6.85% for AR = 0.15. Furthermore, under the same conditions, the PCM stored 8.02% more energy in plexiglass containers than in aluminium containers. Originality/value This study contributes to the understanding of the influence of inclination angle, container material, AR and ΔT on the thermal energy storage capabilities of PCM in a novel designed container. The findings highlight the importance of AR in mitigating the effect of the inclination angle on energy storage capacity. Additionally, comparing aluminium and plexiglass containers provides insights into the effect of container material on the melting behaviour and energy storage properties of PCM.

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“…They found that the temperature difference between the top and bottom layers for aspect ratio of 1:1 was 16.68°C, and for aspect ratios of 2:1 and 3:1, it was 4.52 and 6.94°C, respectively. Nie et al 25 predicted the optimum value of radius to diameter, melting fraction of low R/D ratio reached 100% earlier than the high R/D ratio. Peiro et al, 34 experimentally studied the multiple PCMs arranged in layers compared with the single PCM TES 35 .…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, a significant amount of heat is transferred away with the HTF, while there is a less quantity of heat transferred to the PCMs. To resolve this shortcoming, various methods are used, like adding fins, 19 nano particles, 20 using metal foam, 21 expanded graphite, 22 nano encapsulations, 23 arranging PCM in layers, 24 and by varying geometric parameters 25 . Among these methods using PCMs in layers and varying geometric parameters are simpler and effective.…”

Section: Introductionmentioning

confidence: 99%

A numerical study on effects of axially and radially cascaded phase change material on charging/discharging time of paraffin based packed bed thermal energy storage

2021

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This study manifests the improvement in the charging and discharging time of the encapsulated PCM arranged in packed bed thermal energy storage. The combined effect of the aspect ratio (ratio of height to diameter of the packed bed) and cascaded configurations of phase change materials (PCMs) integrated with the solar water heating system is analyzed numerically. The mathematical model is validated by the experimental study available in the literature. Initially, an optimal aspect ratio of the packed bed is predicted for charging/discharging. And then, PCMs are arranged in different layers in the packed bed based on the optimal aspect ratio to analyze the combined effect of PCM configurations and optimal aspect ratio. The charging and discharging time were decreased with an increasing aspect ratio to 2.5. Afterward, an increased aspect ratio showed a trivial change in the charging and discharging time of latent heat thermal energy storage (LHTES). Furthermore, at an optimal aspect ratio of 2.5, PCMs were arranged in the packed bed with both axial (parallel) and combined axial‐radial layers (parallel and series) to see the impact of the cascaded configuration. Charging and discharging time of combined axial‐radial layers configuration was respectively found to be 17.21% and 18.5%, less than charging time without layers.

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Effect of geometric parameter and nanoparticles on PCM melting in a vertical shell-tube system

Cited by 47 publications

References 45 publications

A review of phase change materials and heat enhancement methodologies

A review of phase change materials and heat enhancement methodologies

A numerical study on the effects of inclination angle and container material on thermal energy storage by phase change material in a thick-walled disc

A numerical study on effects of axially and radially cascaded phase change material on charging/discharging time of paraffin based packed bed thermal energy storage

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