Melting and solidification characteristics of cylindrical encapsulated phase change materials

Shaker, M; Sultan, Ahmed Abd El-Razik Ahmed; Negiry, Emad A. El; Radwan, Ali

doi:10.1016/j.est.2021.103104

Cited by 18 publications

(4 citation statements)

References 17 publications

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“…Amer et al 269 and Abreha et al 270 found that the melting time and solidification of the finned shell-and-tube LHS system were reduced by up to 70.5% by increasing the HTF flow rate and HTF inlet temperature. Shaker et al 271 found that the complete melting and solidification time of cylindrical encapsulated PCM was enhanced by 41% with increasing the fin number from 4 to 12. Oliveski et al 272 found that the phase change rates of rectangular PCM cavities were 15−21% higher when the fins had a higher aspect ratio of 11.0 and were installed at a lower cavity position.…”

Section: Thermal Enhancementmentioning

confidence: 99%

Recent Advances in CFD Simulations of Multiphase Flow Processes with Phase Change

Zhu

Zhang

et al. 2023

Ind. Eng. Chem. Res.

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Phase change is a phenomenon that has been extensively utilized in chemical engineering, energy, electronics, vehicle, and space exploration. From both the science and engineering perspectives, gaining a profound understanding of the intricacies of multiphase flow processes accompanied by heat and mass transfer due to phase change is of fundamental importance. Indeed, the computational fluid dynamics (CFD) has been increasingly applied as an effective tool to give an in-depth and efficient analysis of the phase change processes, thereby enhancing our understanding and capacity to control and optimize the phase change effects in these processes. This paper seeks to provide a comprehensive review of the utilization of CFD methodologies in the simulations of phase change flows across various applications, including temperature management, drying, separation and purification, and others. First, the CFD models at various scales that are developed to elucidate the phase change processes are summarized. Second, the noteworthy advances in the recent CFD simulation work on various phase change processes are presented, respectively. Finally, the challenges and potential prospects to facilitate the application of the phase change flow are discussed. The current review aims to offer insightful guidance for the CFD modeling of phase change processes in numerous engineering application scenarios.

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Section: Thermal Enhancementmentioning

confidence: 99%

Recent Advances in CFD Simulations of Multiphase Flow Processes with Phase Change

Zhu

Zhang

et al. 2023

Ind. Eng. Chem. Res.

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“…Shaker vd. [13] silindirik olarak kapsüllenmiş FDM içerisine kanatçık yerleştirilmesinin FDM'nin erime sürecine etkilerini deneysel ve sayısal olarak araştırmışlardır. FDM olarak parafin wax ve lauric asit kullandıkları çalışmada silindir içerisine farklı sayıda kanatçık yerleştirerek çeşitli su giriş sıcaklıklarında FDM'nin erime ve katılaşma sürecini incelemişlerdir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Kanatçıklı Dikey Silindirik Bir Tüp İçerisinde Faz Değiştiren Malzemenin Erime Analizi

İzgi

2024

Politeknik Dergisi

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Bu çalışmada, ısıl enerji depolama sistemlerinde kullanılan silindirik olarak kapsüllenmiş faz değiştiren malzemenin erime süreci ve silindir içerisine kanatçık yerleştirilmesinin etkileri sayısal olarak incelenmiştir. Analizler için üç boyutlu, zamana bağlı Hesaplamalı Akışkanlar Dinamiği modeli oluşturulmuş ve oluşturulan model literatürdeki deneysel ve sayısal veriler ile doğrulanmıştır. Kanatçıkların erime sürecine etkilerini incelemek amacı ile 6, 9 ve 12 mm olmak üzere üç farklı kanatçık genişliği seçilmiştir. Kanatçıkların etkileri, faz değiştiren malzeme erime sıcaklığı ile silindirin dış duvar sıcaklığı arasındaki farkın 10, 20 ve 30 °C olduğu durumlarda analiz edilmiştir. Faz değiştiren malzeme içerisine yerleştirilen kanatçıkların erime sürecine önemli ölçüde etki ettiği, kanatçık genişliği arttıkça erime süresinin kısaldığı görülmüştür. Kanatçık etkisi ile erime süresindeki en büyük düşüş, 10 °C sıcaklık farkında 12 mm kanatçık genişliğinde elde edilmiştir. Bu durumda erime süresi 14.8 dakika iken kanatçıksız faz değiştiren malzemenin erime süresi 43.5 dakikadır.

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“…The HTT location with fins, and metal foams use, respectively, affects PCM melting, and high fin surface is influential in expediting PCM melting . 40, 41 Nie et al 42 performed a PCM melting simulation using a two-dimensional strategy in a horizontal containers with fins. Straight fins with shorter length effectively augment melting than longer fins.…”

Section: Introductionmentioning

confidence: 99%

“…The model with fin and metal foam combination increases PCM melting tremendously. The HTT location with fins, and metal foams use, respectively, affects PCM melting, and high fin surface is influential in expediting PCM melting 40,41 . Nie et al 42 performed a PCM melting simulation using a two‐dimensional strategy in a horizontal containers with fins.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation on melting and energy storage density enhancement of phase change material in a horizontal cylindrical container

Senthil

Punniakodi

Balasubramanian

et al. 2022

Intl J of Energy Research

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Summary Thermal energy storage (TES) plays a significant role in storing heat energy during the availability of a source. The phase change material (PCM) storage density is high, but its meager thermal conductivity leads to ineffective heat transfer. This mathematical modeling work simulates two different heat transfer tube (HTT) arrangements in a horizontal cylindrical container to melt the PCM using the enthalpy‐porosity method. Case‐1 with a single HTT at the centroidal axis and Case‐2 with multiple tubes spread radially. Cases‐1 and 2 are observed with melting and solidification duration of 39.8 and 184 minutes, and 69.83 and 292.5 minutes respectively. Case‐1 has a shorter melting and solidification time because of the optimal HTT location. Case‐2 is observed with a high heat storage density of 224.95 MJ/m3, compared to Case‐1 with 224.571 MJ/m3. Nusselt number is higher for Case‐2 (385.86) during charging and higher for Case‐1 (208) during discharging. Nusselt number initially varies for both cases due to effective heat convection at the start; however, Case‐1 has a shorter melting duration with its energy density lower than the Case‐2. Based on the obtained results, it could be suggested that Case‐1 could be applicable when simultaneous heat transfer requires less energy storage and a faster melting rate, while Case‐2 could be used in places that demand a higher storage density.

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Melting and solidification characteristics of cylindrical encapsulated phase change materials

Cited by 18 publications

References 17 publications

Recent Advances in CFD Simulations of Multiphase Flow Processes with Phase Change

Recent Advances in CFD Simulations of Multiphase Flow Processes with Phase Change

Kanatçıklı Dikey Silindirik Bir Tüp İçerisinde Faz Değiştiren Malzemenin Erime Analizi

Numerical investigation on melting and energy storage density enhancement of phase change material in a horizontal cylindrical container

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