Transient phase change heat transfer in a metal foam-phase change material heatsink subject to a pulse heat flux

Hajjar, Ahmad; Jamesahar, Esmail; Shirivand, Hassan; Ghalambaz, Mohammad; Mahani, Roohollah Babaei

doi:10.1016/j.est.2020.101701

Cited by 15 publications

(7 citation statements)

References 49 publications

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“…One can find quite many papers describing studies of the influence of heat sink geometries on their thermal performance [5][6][7][14][15][16][19][20][21][22][24][25][26][28][29][30][31][32][33][34][35][36][37][38][42][43][44]47,49,58,63]. Kumar et al performed an analysis of the fluid flow and thermal behavior of aircooled microchannel heat sinks.…”

Section: Heat Sinks In Engineeringmentioning

confidence: 99%

“…The operating temperature should not be exceeded during typical operation under nominal operating conditions, defined as thermal resistance [1][2][3]. The type of cooling system used-active (forced) [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]/passive and the selection of material [11][12][13][14][15][35][36][37][38][39][52][53][54] from which the heat exchanger (heat sink) is made-depends primarily on the amount of generated heat, the heating power of the source, and the method of heat transfer to the environment. The ambient conditions in which the cooling system operates are also important: temperature, humidity, flow rate of the cooling medium (e.g., air, water, or other coolants), the possibility of fouling a heat sink with dust and deposits, etc.…”

Section: Introductionmentioning

confidence: 99%

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The Influence of Geometry, Surface Texture, and Cooling Method on the Efficiency of Heat Dissipation through the Heat Sink—A Review

Grochalski,

Rukat,

Jakubek

et al. 2023

Materials

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The performance of a heat sink is significantly influenced by the type of cooling used: passive or active (forced), the shape of the heat sink, and the material from which it is made. This paper presents a review of the literature on the influence of geometry and surface parameters on effective heat transfer in heat sinks. The results of simulation studies for three different heat sink fin geometries and cooling types are presented. Furthermore, the influence of the surface texture of the heat sink fins on the heat transfer efficiency was determined. It was shown that the best performance in terms of geometries was that of a wave fin heat sink. When the surface texture was analyzed, it was found that an increase in the amplitude values of the texture decreases the heat dissipation efficiency in the case of active cooling, while for passive cooling, an increase in these parameters has a beneficial effect and increases the effective heat transfer to the surroundings. The cooling method was found to be the most important factor affecting heat dissipation efficiency. Forced airflow results in more efficient heat transfer from the heat sink fins to the surroundings.

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Section: Heat Sinks In Engineeringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Influence of Geometry, Surface Texture, and Cooling Method on the Efficiency of Heat Dissipation through the Heat Sink—A Review

Grochalski,

Rukat,

Jakubek

et al. 2023

Materials

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“…The effectiveness of metal foams is governed by different parameters such as the metal material, porosity, and pore density. Metal foams boost the rate of heat transfer by augmenting the exposure area between the heat source (absorber plate) and the working fluid (PCM), providing enhanced heat transfer capability with a slight penalty on the thermal storage capacity (Hajjar et al, 2020). As a consequence, the high potential of impregnating PCM with porous metal foams has already been reported in many experimental and numerical investigations (Chen et al, 2021), such as Zheng et al (2018), Zhao et al (2010), Ghahremannezhad et al (2020), Dinesh andBhattacharya (2020), andMancin et al (2015).…”

Section: Composite Pcmmentioning

confidence: 99%

Review of cooling techniques used to enhance the efficiency of photovoltaic power systems

Sharaf

Yousef

Huzayyin

2022

Environ Sci Pollut Res

112

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Photovoltaic (PV) panels are one of the most important solar energy sources used to convert the sun’s radiation falling on them into electrical power directly. Many factors affect the functioning of photovoltaic panels, including external factors and internal factors. External factors such as wind speed, incident radiation rate, ambient temperature, and dust accumulation on the PV cannot be controlled. The internal factors can be controlled, such as PV surface temperature. Some of the radiation falling on the surface of the PV cell turns into electricity, while the remainder of incident radiation is absorbed inside the PV cell. This, in turn, elevates its surface temperature. Undesirably, the higher panel temperature, the lower conversion performance, and lesser reliability over the long term occur. Hence, many cooling systems have been designed and investigated, aiming to effectively avoid the excessive temperature rise and enhance their efficiency. Many cooling methods are used to cool solar cells, such as passive cooling, active cooling, cooling with phase change materials (PCMs), and cooling with PCM with other additives such as nanoparticles or porous metal. In this work, the common methods utilized for cooling PV panels are reviewed and analyzed, focusing on the last methods, and summarizing all the researches that dealt with cooling PV solar cells with PCM and porous structures.

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“…17 Among them, the use of porous materials as supporting materials not only retains the shape but also enhances the thermal conductivity. 18,19 Until now, extensive research has been carried out on largely porous materials in the development of form-stable composite PCMs, including clay minerals, 20,21 carbon materials, 22 metal form porous materials, 23 and more. Among them, expanded graphite (EG) stands out as one of the most promising carbon-based three-dimensional porous materials owing to its source abundance, low cost, easy preparation, and eco-friendliness.…”

Section: Introductionmentioning

confidence: 99%

“…With respect to the aforementioned problems, there has been an immense focus on the fabrication of form-stable composite PCMs, which includes porous absorption, polymer cross-linking, and microencapsulation . Among them, the use of porous materials as supporting materials not only retains the shape but also enhances the thermal conductivity. , Until now, extensive research has been carried out on largely porous materials in the development of form-stable composite PCMs, including clay minerals, , carbon materials, metal form porous materials, and more. Among them, expanded graphite (EG) stands out as one of the most promising carbon-based three-dimensional porous materials owing to its source abundance, low cost, easy preparation, and eco-friendliness. , Initially, a kind of adaption composite material consisting with expanded graphite and paraffin fabricated by Yin et al was used to combine with the active cooling manner for the thermal management of electronic components .…”

Section: Introductionmentioning

confidence: 99%

Lauric Acid/Expanded Graphite Composite Phase Change Film with High Thermal Conductivity for Thermal Management

Zuo,

Zhang,

Tang

et al. 2024

Energy Fuels

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With the rapid development of electronics toward integration and miniaturization, efficient and accurate removal of excess energy from electronics has become a major challenge. In this study, a novel expanded graphite-based composite phase change film (EL) with high thermal conductivity was synthesized to facilitate the heat dissipation of electronic devices. The expanded graphite was compressed into a thin film and then impregnated with lauric acid (LA) to form EL. The effect of pressure on the thermal performance of EL was investigated. The results show that the latent heat storage capacity of composite phase films increases with the decrease in pressure. The melting and cooling enthalpy of EL-0 reach up to 111.6 and 107.9 J/g, respectively. Meanwhile, the corresponding in-plane thermal conductivity and axial thermal conductivity reach up to 21.28 W/(m•K) and 9.70 W/(m•K), which are 54.6 and 24.9 times those of the pure LA, respectively. It is interesting that the introduction of a phase change material (PCM) improves the axial thermal conductivity in comparison with the expanded graphite film without the PCM. The obtained EL exhibits excellent leakageproof property and long-term thermal reliability. Last, the EL utilized in the thermal management of the graphics processing unit of the laptop running decreased the temperature by 5.0 °C, implying a potential application in the thermal management of electronics.

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Transient phase change heat transfer in a metal foam-phase change material heatsink subject to a pulse heat flux

Cited by 15 publications

References 49 publications

The Influence of Geometry, Surface Texture, and Cooling Method on the Efficiency of Heat Dissipation through the Heat Sink—A Review

The Influence of Geometry, Surface Texture, and Cooling Method on the Efficiency of Heat Dissipation through the Heat Sink—A Review

Review of cooling techniques used to enhance the efficiency of photovoltaic power systems

Lauric Acid/Expanded Graphite Composite Phase Change Film with High Thermal Conductivity for Thermal Management

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