Numerical heat transfer analysis of a thermal energy storage system enclosure with horizontal fin for sustainable energy storage

Gollapudi, Lakshmi Narayana; Senanayake, Rohan; Georgantopoulou, Christina G.; Singh, Anurag

doi:10.1016/j.csite.2021.101670

Cited by 5 publications

(2 citation statements)

References 37 publications

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“…Gollapudi et al modelled a square container with a horizontal fin loaded with an Al2O3-nanofluid with increasing heat effect. The top and bottom walls are adiabatic, whereas the vertical ones are isothermal, with one wall at 310 K and the other at 290 K. With a 3% volume proportion of Al2O3 nanoparticle in each of the three base fluids (water, water/ethylene glycol (EG), and EG), the Nusselt number variation is examined [69].…”

Section: Pcm Design Considerationsmentioning

confidence: 99%

A state-of-the-art review on advancements in phase change material encapsulation techniques for electronics cooling

Venkatakrishnan,

Palanisamy

2023

Phys. Scr.

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The continuous rise and reduction in heat flow of electronic devices constitute significant challenges for cooling management. The shell materials thermal conductivity affects both heat transfer and PCM - heat transfer fluid interaction (HTF). As a result, the traditional techniques of cooling systems are insufficient to provide the necessary cooling for such heat-generating electronic gadgets. In this view, there has been a considerable amount of effort applied into the development of high-efficiency cooling for electronics cooling applications. Today, many scientific studies are focusing on the usage of phase change materials (PCM) in high-energy storage systems due to their excellent thermal storage properties. Since the PCM and its volume of energy storage decrease from core to the coating, the higher encapsulation thickness provides minimum quality when compared to the lower thickness of encapsulation This review highlights the importance of size, thickness, and core-to-coating ratios while offering a thorough overview of PCM encapsulation methods for electronics cooling. It presents the novel idea of carbon nanotube-enhanced PCMs, emphasizes the need of choosing the right shell material, and investigates the effects of encapsulation shape. The key characteristics of encapsulation, such as influence of shell material, encapsulation shape, melting and solidification are reviewed.

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Section: Pcm Design Considerationsmentioning

confidence: 99%

A state-of-the-art review on advancements in phase change material encapsulation techniques for electronics cooling

Venkatakrishnan,

Palanisamy

2023

Phys. Scr.

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“…It is also noted that the number of internal tubes has positive effects in melting rate and negative effects with distance between the tubes. Gollapudi et al [18] numerically explored the impact of horizontal fin in a square container packed with Al 2 O 3 nanofluid and found that heat transmission characteristics were upgraded with the presence of fin. Additionally, higher conductivity ratio of fins resulted in better heat transmission performance.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Thermal Enhancement of Phase Change Material with the Addition of Nanoparticles and Changing the Orientation of the Enclosure

Teja

Gugulothu

Reddy

et al. 2022

Journal of Nanomaterials

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The global demand of the heating and cooling applications gives a larger potential to study the thermal energy storage system. Phase change materials (PCM) that are used to charge, store, and discharge the heat energy are inferior in heat transfer characteristics. The properties of PCM can be improved by adding nanoparticles, changing the orientation of the enclosure or both. Two-dimensional transient numerical analysis on the effect of Grashoff number (5000, 13000, and 20000), nanoparticle type (Al2O3, CuO, and MWCNT), and volume concentration (0%, 1%, 3%, and 5%) added in RT 42 PCM and orientation of square enclosure (30, 45, and 60°) to enhance the heat transfer rate is carried out. The thermophysical properties of the nano-PCM are evaluated and presented. From the results, it is affirmed that the melt fraction of the PCM rises with the increase in Gr and volume concentration of the nanoparticles up to an optimum level. The MWCNT-based nano-PCM attained a larger portion of melt fraction followed by Al2O3, CuO, and pure PCM. It is noted that an orientation of 60° and 45° will convert more quantities of pure PCM and nano-PCM into liquid fraction, respectively. The (3% MWCNT/RT-42 PCM) filled in 45° oriented container attained the highest melt fraction by 3.4%, 2.04%, and 2.94% than (3% Al2O3/RT-42 PCM), (1%CuO/RT-42 PCM), and pure PCM. The variation in the maximum melt fraction of the nanomaterial is because of the change in thermophysical characteristics of the nano-PCM.

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Enhancement of heat dissipation rate of a heat sink with perforated fins using CFD and Swarm Intelligence

Maji,

Deshamukhya,

Choubey

2024

Heat Trans

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This study aims to enhance heat dissipation in a heat sink by using perforated pin fins. The research specifically explores circular pin fins with circular perforations that taper from one end to the other. Through three‐dimensional computational fluid dynamics (CFD) simulations, the study evaluates the impact of tapered perforations on heat dissipation, performance, and pressure loss in circular fins. The results indicate that fins with perforations consistently achieve higher heat dissipation rates compared to solid fins, up to certain perforation sizes and numbers. Notably, fins with tapering in perforations, where the inner and outer diameters are 4 and 5 mm, respectively, exhibit the highest system performance, with a maximum increase of 6.1% over fins without tapering. Additionally, two advanced swarm intelligence algorithms, Particle Swarm Optimization (PSO) and Teaching Learning Based Algorithm (TLBO), were employed to assess the performance of heat sinks with both converging and diverging tapered perforations. The optimized results from TLBO were compared with those from PSO for validation. An intriguing discovery of this research is that fins with converging perforations achieve the highest system performance, followed by fins without tapering, and then fins with diverging perforations.

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Numerical heat transfer analysis of a thermal energy storage system enclosure with horizontal fin for sustainable energy storage

Cited by 5 publications

References 37 publications

A state-of-the-art review on advancements in phase change material encapsulation techniques for electronics cooling

A state-of-the-art review on advancements in phase change material encapsulation techniques for electronics cooling

Numerical Study on the Thermal Enhancement of Phase Change Material with the Addition of Nanoparticles and Changing the Orientation of the Enclosure

Enhancement of heat dissipation rate of a heat sink with perforated fins using CFD and Swarm Intelligence

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