Parametric investigation of the enhancing effects of finned tubes on the solidification of PCM

Santos, Felipe Silva dos; Ismail, Kamal Abdel Radi; Lino, Fátima A. M.; Arabkoohsar, Ahmad; LAGO, TAYNARA GEYSA SILVA DO

doi:10.1016/j.ijheatmasstransfer.2020.119485

Cited by 26 publications

(4 citation statements)

References 30 publications

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“…It was shown that the charging and discharging of the LHTES system was enhanced by the innovative metallic structures coupled to PCM. Santos et al [123] investigated the effect of finned tubes on the thermal performance of PCM, and it was shown that for attaining maximum enhancement an optimal diameter for fins is required. Adding fins to storage tanks was examined by Gil et al [124] which showed an enhancement in thermal conductivity up to 25.83%.…”

Section: Structure and Dimensionsmentioning

confidence: 99%

A Summary Review on Experimental Studies for PCM Building Applications: Towards Advanced Modular Prototype

et al. 2022

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The use of phase change material (PCM) as a thermal energy storage system integrated in new buildings, and as retrofits in old buildings, proved its merit as promising renewable energy source. Heating and cooling building applications of PCM have been studied by plenty of scientists, globally, on the basis of numerical and experimental analysis. The performed experiments have mainly focused on one application—active or passive—using permanent prototype design for a certain duration and weather condition. The current study is a new review that focuses on two complementary aspects: (1) Reviewing latest studies in PCM domain and assessing the thermal performance of implemented prototypes within the conducted PCM experimental studies, namely, the effect of the design on the number of acceptable variables and possible PCM applications; and (2) suggesting a new, advanced, flexible, and modular prototype designed to enable several applications of PCM to be adapted and combined within the model. It was implied that the new design allows different configurations that are lacking in the literature and serves for future PCM building applications of thermal analysis towards PCM integration optimization, as an attempt for transforming residential compartments into net zero energy buildings. The designed prototype overcomes the deficiencies found in previous reviewed experimental facilities.

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Section: Structure and Dimensionsmentioning

confidence: 99%

A Summary Review on Experimental Studies for PCM Building Applications: Towards Advanced Modular Prototype

et al. 2022

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“…The major issue during the solidification process is the slow rate of PCM freeze front movement inside the capsule owing to the low thermal conductivity (“ k ”) 21 . Addition of nanoparticles into the PCM is one of the viable solution to counter this problem 22 .…”

Section: Introductionmentioning

confidence: 99%

“…The major issue during the solidification process is the slow rate of PCM freeze front movement inside the capsule owing to the low thermal conductivity ("k"). 21 Addition of nanoparticles into the PCM is one of the viable solution to counter this problem. 22 The rate at which the PCM freeze front moves inside a container depends both on the surface heat transfer coefficient ("h") and temperature difference (Δt) between the PCM and HTF.…”

mentioning

confidence: 99%

Parametric studies on solidification of phase change material inside a cylindrical container toward achieving optimal energy efficiency

Raj

Vellaichamy

Velraj

et al. 2022

Env Prog and Sustain Energy

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Fifty percentage of the energy consumption inside any building is utilized for space cooling purposes. Energy storage through phase change material (PCM) is a viable option to fulfill the cooling energy requirements. The PCM is usually stored inside multiple containers/packets. However, the PCM's low thermal conductivity is a fundamental problem that delays the solidification time and can be accelerated through the nanoparticle addition and higher heat transfer fluid (HTF) flow rate. The recent advancement in nanoparticles opens an opportunity to enhance the heat transfer characteristics of the PCM. Therefore, a detailed parametric analysis is carried out for the PCM inside a cylindrical container to analyze the impact of thermal conductivity ("k") enhancement through nanoparticle addition and the external surface heat transfer coefficient ("h") on the solidification time reduction of the Water and RT21 PCM.It is concluded from the results that while utilizing gaseous HTF, it is better to increase the surface "h" rather than increasing the "k" of the PCM. On the other hand, for liquid HTF, "k" value played a significant role in solidification time reduction than increasing the "h" value. A considerate amount of solidification time reduction is possible through nanoenhanced RT21 and water PCM. This study will help the researchers/engineers design an energy efficient storage material toward achieving sustainability.

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“…Another study on the fins arrangement and metal foam effects on PCMs is performed by Zhao et al [32], which shows a 60% reduction in melting time can be achieved based on optimizing the number of fins. Santos et al [33] enhanced the PCM solidification through finned pipes, and developed the correlations to examine PCM thermal performance. They also proposed new correlations to predict the melting interface within 4% error.…”

Section: Introductionmentioning

confidence: 99%

A numerical study on the effects of nanoparticles and stair fins on performance improvement of phase change thermal energy storages

Nakhchi

Hatami

Rahmati

2021

Energy

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Parametric investigation of the enhancing effects of finned tubes on the solidification of PCM

Cited by 26 publications

References 30 publications

A Summary Review on Experimental Studies for PCM Building Applications: Towards Advanced Modular Prototype

A Summary Review on Experimental Studies for PCM Building Applications: Towards Advanced Modular Prototype

Parametric studies on solidification of phase change material inside a cylindrical container toward achieving optimal energy efficiency

A numerical study on the effects of nanoparticles and stair fins on performance improvement of phase change thermal energy storages

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