Numerical investigations of fin efficacy for phase change material (PCM) based thermal control module

Desai, Akshaykumar N.; Gunjal, Anish; Singh, Vivek

doi:10.1016/j.ijheatmasstransfer.2019.118855

Cited by 83 publications

(18 citation statements)

References 39 publications

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“…In addition, during solidification, no effect of fin insertion was reported. A numerical study was developed by Desai et al 35 to find the optimal configuration that limits the critical temperature rise of the electronic component. The parameters studied are the size, number, shape, and mass percentage of the fins.…”

Section: Application Of Pcm In the Thermal Management Of Electronic Cmentioning

confidence: 99%

Emerging applications of phase change materials: A concise review of recent advances

et al. 2020

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Phase change materials (PCMs) are used as latent heat thermal energy storage materials. The fields of application for PCMs are broad and diverse. Among these areas are thermal control of electronic components and thermal building regulations. These areas are used as heat and cold storage materials. The low thermal conductivity of PCMs is one of the significant and severe technological problems of PCMs. This paper presents a review of the latest works using PCMs in the thermal management of electronic components, buildings, and heat exchangers. Besides, it provides concise pieces of information on the classification of PCMs, their advantages, disadvantages, and thermal storage systems.

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Section: Application Of Pcm In the Thermal Management Of Electronic Cmentioning

confidence: 99%

Emerging applications of phase change materials: A concise review of recent advances

et al. 2020

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“…Second, the thermophysical properties of phase transition in PCMs allow for minimal or no temperature stratification; thus, the temperature during operation can remain almost unchanged. Therefore, PCMs find significant applications in the fields of energy savings in buildings [16][17][18][19], load management in district cooling utilities [20,21] and peak shaving in plants of renewable energy [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Heat Transfer Enhancement in a Triple Tube Latent Heat Storage System Using Circular Fins with Inline and Staggered Arrangements

et al. 2021

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Inherent fluctuations in the availability of energy from renewables, particularly solar, remain a substantial impediment to their widespread deployment worldwide. Employing phase-change materials (PCMs) as media, saving energy for later consumption, offers a promising solution for overcoming the problem. However, the heat conductivities of most PCMs are limited, which severely limits the energy storage potential of these materials. This study suggests employing circular fins with staggered distribution to achieve improved thermal response rates of PCM in a vertical triple-tube heat exchanger involving two opposite flow streams of the heat-transfer fluid (HTF). Since heat diffusion is not the same at various portions of the PCM unit, different fin configurations, fin dimensions and HTF flow boundary conditions were explored using computational studies of melting in the PCM triple-tube system. Staggered configuration of fin distribution resulted in significant increases in the rates of PCM melting. The results indicate that the melting rate and heat charging rate could be increased by 37.2 and 59.1%, respectively, in the case of staggered distribution. Furthermore, the use of lengthy fins with smaller thickness in the vertical direction of the storage unit resulted in a better positive role of natural convection; thus, faster melting rates were achieved. With fin dimensions of 0.666 mm × 15 mm, the melting rate was found to be increased by 23.6%, when compared to the base case of 2 mm × 5 mm. Finally, it was confirmed that the values of the Reynolds number and inlet temperatures of the HTF had a significant impact on melting time savings when circular fins of staggered distribution were included.

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“…The MEPCM exhibited a high melting point above 500 °C, high heat storage density of 180 J g −1 or higher, and durability over 3000 cycles. Furthermore, microscale encapsulation provided beneficial properties for thermal control: miniaturization of the PCM enabled rapid melting of the internal alloy 2 , and expansion of the heat exchange area provided rapid thermal response 20 .…”

Section: Introductionmentioning

confidence: 99%

Catalyst-loaded micro-encapsulated phase change material for thermal control of exothermic reaction

Takahashi

Koide

Sakai

et al. 2021

Sci Rep

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CO2 methanation is a promising technology to enable the use of CO2 as a resource. Thermal control of CO2 methanation, which is a highly active exothermic reaction, is important to avoid thermal runaway and subsequent degradation of the catalyst. Using the heat storage capacity of a phase change material (PCM) for thermal control of the reaction is a novel passive approach. In this study a novel structure was developed, wherein catalysts were directly loaded onto a micro-encapsulated PCM (MEPCM). The MEPCM was prepared in three steps consisting of a boehmite treatment, precipitation treatment, and heat oxidation treatment, and an impregnation process was adopted to prepare a Ni catalyst. The catalyst-loaded MEPCM did not show any breakage or deformation of the capsule or a decrease in the heat storage capacity after the impregnation treatment. MEPCM demonstrated a higher potential as an alternative catalyst support in CO2 methanation than the commercially available α-Al2O3 particle. In addition, the heat storage capacity of the catalyst-loaded MEPCM suppressed the temperature rise of the catalyst bed at a high heat absorption rate (2.5 MW m−3). In conclusion, the catalyst-loaded MEPCM is a high-speed, high-precision thermal control device because of its high-density energy storage and resolution of a spatial gap between the catalyst and cooling devices. This novel concept has the potential to overcome the technical challenges faced by efficiency enhancement of industrial chemical reactions.

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Numerical investigations of fin efficacy for phase change material (PCM) based thermal control module

Cited by 83 publications

References 39 publications

Emerging applications of phase change materials: A concise review of recent advances

Emerging applications of phase change materials: A concise review of recent advances

Investigation of Heat Transfer Enhancement in a Triple Tube Latent Heat Storage System Using Circular Fins with Inline and Staggered Arrangements

Catalyst-loaded micro-encapsulated phase change material for thermal control of exothermic reaction

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