Experimental comparison of longitudinal and annular fins using PCM for Thermal energy storage

Afridi, Mohammed Shahid; Anthony, Alfred; Sundaram, P.; Babu, S. Rajesh

doi:10.1088/1757-899x/402/1/012179

Cited by 8 publications

(5 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the techniques includes increasing the heat exchange area between PCM and heat transfer fluid (HTF). Usage of metal foams, − heat pipes, , fins, ,− or any combination of these serves this purpose. Another approach is to improve the heat transfer rate by enhancing PCM’s thermophysical properties, such as thermal conductivity and latent heat through measures such as dispersion of appropriate nanoparticles within the PCM.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nanomaterial Inclusion in Phase Change Materials for Improving the Thermal Performance of Heat Storage: A Review

Barthwal

Dhar

Powar

2021

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Dispersion of nanoparticles is one of the potential solutions to improve the thermophysical properties of phase change (or transition) materials (PCMs) and enhance the performance of latent thermal energy storage (LTES) systems. The PCM ought to have a high latent heat of fusion, and zero or negligible coefficient of thermal expansion. A good PCM should have melting and solidification compatibility with negligible or zero subcooling, and it should not react with the common chemical reagents. The present known PCMs possess low thermal conductivity that results into a longer solidification and melting time of PCMs. In the past two decades, researchers have reported improved thermal conductivity and heat-storing capacity of PCMs employing graphite nanoparticles/fibers, carbon nanotubes/fibers, metal, and metal oxide nanoparticles. This work reviews the reported experimental and numerical studies describing the consequences of nanoparticle inclusions of various shapes and sizes on the thermal properties of the PCMs. This review attempts to make a consolidated database of the studies related to nanoadditive inclusion into PCMs for various applications. Graphene dispersed into PCM has resulted into 14 times thermal conductivity enhancement. As far as metal oxide nanoparticles are concerned, TiO2 and Al2O3 nanoparticles outperformed others. The compatibility between the nanoadditive and PCM is necessary to tailor favorable thermal properties. This work reviews numerous studies of different nanoparticle–PCM duos.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Nanomaterial Inclusion in Phase Change Materials for Improving the Thermal Performance of Heat Storage: A Review

Barthwal

Dhar

Powar

2021

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

show abstract

“…One of the most important weaknesses of PCMs is their low thermal conductivity that affects their function in energy storage devices in terms of rate of thermal charging and discharging. As extensively studied before [14][15][16][17][18][19][20][21][22], application of extended surfaces such as fins is one of the methods that can address this problem. The thermal conductivity of metal fins is far higher than PCMs that help increase the heat transfer rate between the heat transfer fluid (HTF) and the PCM.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Fin Parameters on the Solidification of PCMs in a Fin-Enhanced Thermal Energy Storage System

et al. 2020

View full text Add to dashboard Cite

In the present study, a triplex-tube, employing fin-enhanced phase change materials (PCMs), as a thermal energy storage (TES) system was studied numerically. The main flaw of the PCMs is their low thermal conductivity that restricts their effectiveness for energy storage applications. Metallic (copper) fins are added to the geometry of the system to improve their function by extending the heat transfer area. The effects of the presence, configuration, and dimensions of copper fins were investigated to understand the best design for minimizing the solidification time and achieving the best performance enhancement for the TES system selected for this study. The results revealed that the best performance belonged to fins with a mix configuration, with an attachment angle of 90° and the length and width of 28 mm and 1 mm, respectively. Using this configuration could reduce the required time for complete solidification by around 42% compared to the system without fins. Moreover, it was concluded that increasing the length of the fin could offer its positive effect for enhancing the performance of TES system up to an optimal point only while increasing the width showed a diverse influence. Furthermore, the angles between the tube surface and the fin direction were investigated and 90° was found to be the best choice for the TES case selected in this study. In addition, placement of the fins on the surface of internal or external tube or mix method did not show a significant effect while placing the fins on the external surface of the tube showed even a negative impact on the performance of the TES system compared with when no fins were applied.

show abstract

“…Mohammed Shahid Afridi et al [3] presented a practical study comparing the use of a longitudinal and annular fin using paraffin as an experimental and numerical phase variable. One of the properties of paraffin wax is that it melts at a temperature of 55°C to 60°C .The heat transfer fluid, which is in the liquid state, passes between the tubes to transfer heat from the liquid to the paraffin of the longitudinal and annular fins.…”

Section: Addition Of Longitudinal Finsmentioning

confidence: 99%

Heat Transfer Analysis of the Melting Process on Finned Tubes (A Review on performance enhancement)

Younis¹,

Hamdoon²,

Majeed³

2023

(AREJ)

View full text Add to dashboard Cite

The performance of thermal systems, like heating and cooling systems, depends on a number of factors such as the geometrical shape, the working fluid used to transfer or store heat, and the operating conditions. Accordingly, many studies concentrated on improving the thermal performance of such systems and raising their thermal efficiency by modifying their geometry or using phase-changing materials. Therefore, this work is reviewing the previous studies that dealt with modifying the geometry, by adding annular or longitudinal fins on the main tube of the heat exchanger, and employing different types of phase change materials. This article also presents the previous scientific articles that investigated the effects of changing the location and the orientation of the fins. For the reviewed studies in this article, it is worth mentioning that the numerical investigations outnumbered the experimental ones as the authors focused on finding the optimal design of the studied thermal systems. Furthermore, the previous studies employed phase-change materials, e.g. fatty acids, waxes, and salts, due to their ability to store energy and reuse it in a wide range of applications.

show abstract

Experimental comparison of longitudinal and annular fins using PCM for Thermal energy storage

Cited by 8 publications

References 4 publications

Effect of Nanomaterial Inclusion in Phase Change Materials for Improving the Thermal Performance of Heat Storage: A Review

Effect of Nanomaterial Inclusion in Phase Change Materials for Improving the Thermal Performance of Heat Storage: A Review

The Effects of Fin Parameters on the Solidification of PCMs in a Fin-Enhanced Thermal Energy Storage System

Heat Transfer Analysis of the Melting Process on Finned Tubes (A Review on performance enhancement)

Contact Info

Product

Resources

About