A reconstruction of Maxwell model for effective thermal conductivity of composite materials

Xu, Jinzao; Gao, B.Z.; Kang, Feiyu

doi:10.1016/j.applthermaleng.2016.03.155

Cited by 77 publications

(32 citation statements)

References 23 publications

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“…Moreover, the quasi steady-state model for estimating thermal conductivity of PCM was verified with experimental results (Kothari et al., 2019). Furthermore, the predictive effective thermal conductivity models of composite materials were developed using Maxwell model (Xu et al., 2016), Agari and Uno model (Agari et al., 1990), Russell model (Russell, 1935) and fractal theory (Zheng et al., 2019). These analytical models depend on composition and geometry of composite materials.…”

Section: Introductionmentioning

confidence: 99%

Thermal properties and behavior of microencapsulated sugarcane wax phase change material

Tangsiriratana

Skolpap

Patterson

et al. 2019

Heliyon

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In this study, a micro-encapsulated phase change material (PCM) was composed of sugarcane wax−Al 2 O 3 composite as the core material and gelatin−gum Arabic as the polymer shell materials prepared by complex coacervation. The thermal behavior of solar panels integrated with this encapsulated PCM (EPCM) was investigated. The heat storage-dissipation performance and thermal stability of the sugarcane wax−based composite PCM layer with the heat capacity of 2.86 J/g·°C was influenced by its thickness. Increasing the composite PCM layer thickness from 4 mm to 7 mm could lower the module's front-facing glass temperature by 4% resulting in enhanced the photovoltaic power generation by 12% at the peak, because of the temperature storage ability of the composite PCM. Moreover, the thermal conductivity of the microencapsulated sugarcane wax was calculated using a steady-state one-dimensional energy balance equation. The thermal conductivities estimated across the composite PCM layer depth were found to be temperature dependent. A nonlinear regression of the power law thermal conductivity model gave a good agreement with the observed EPCM-surface temperatures.

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Section: Introductionmentioning

confidence: 99%

Thermal properties and behavior of microencapsulated sugarcane wax phase change material

Tangsiriratana

Skolpap

Patterson

et al. 2019

Heliyon

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“…Xu et al [93] accounted for the effect of microstructures on κ eff by modifying the Maxwell-Garnett model using a linear combination of the mesoscale control volume. They considered the particle connection mechanism by adding the resistance between the continuous phase of particles ( Figure 8) [8,93]. Based on the modified Maxwell-Garnett model, κ eff can be calculated from the relation…”

Section: Theoretical and Numerical Modelingmentioning

confidence: 99%

Thermally enhanced polyolefin composites: fundamentals, progress, challenges, and prospects

Chaudhry

Mabrouk

Abdala

2020

Science and Technology of Advanced Materials

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The low thermal conductivity of polymers is a barrier to their use in applications requiring high thermal conductivity such as electronic packaging, heat exchangers, and thermal management devices. Polyolefins represent about 55 percent of global thermoplastic production, and therefore improving their thermal conductivity is essential for many applications. This review analyzes the advances in enhancing the thermal conductivity of polyolefin composites. First, the mechanisms of thermal transport in polyolefin composites and the key parameters that govern conductive heat transfer through the interface between the matrix and the filler are discussed. Then the advantage with different thermally conductive fillers are reviewed and analyzed. Finally, the key challenges and future directions for developing thermally enhanced polyolefin composites are outlined.

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“…Fig. 2: Illustration of Maxwell's modeling to the effective thermal conductivity of a heterogeneous sphere containing spherical particles [32] (4)…”

Section: Special Reviewmentioning

confidence: 99%

Thermal conductivity of cast iron -A review

Wang

2020

China Foundry

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C ast irons are among the most widely used metallic materials due to their good mechanical and physical properties, excellent casting ability and low cost. According to the survey of Modern Casting [1] , as shown in Fig. 1, outputs of lamellar graphite cast iron (LGI) are much higher than that of spheroidal graphite cast iron (SGI) though SGI has better mechanical properties. One of the reasons is that LGI has wide applications at high temperatures due to its superior thermal conductivity. That's why the LGI and compacted graphite cast iron (CGI) are widely applied in brake disc, engine block and cylinder head [2][3][4][5] . The thermal conductivity is an extremely important performance index for cast irons. The high thermal conductivity can help to transfer heat rapidly and prevent thermo-mechanical fatigue, deformation and hot cracking, thereby ensuring the applications of cast irons in more complex or harsher conditions and improving the service life of products [6] . Therefore, on the premise of basic mechanical properties, the design and development of high thermal conductivity cast irons is one of the key points in the research and development of cast irons.Cast irons are multi-component alloys with regular elements of C and Si and some commonly added alloying elements, such as Mn, Cu, Ni, Cr, W, Mo, V, Ti, Al, etc. The microstructure of cast irons is complicated, usually composed of ferrite, pearlite, graphite, and cementite. So, the thermal conductivity of cast irons is dependent on both the alloying elements and structural constituents.During solidification, the formation of cast iron microstructure, especially the graphite morphology, is governed by the difference in thermal conductivity between graphite and austenite in eutectic couple, and between different orientations of graphite crystals [7] . According to different graphite morphologies, cast irons where carbon precipitated in the form of graphite (graphite cast irons) are mainly divided into LGI with lamellar graphite, CGI with compacted graphite and SGI with spheroidal graphite. Generally, the thermal

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A reconstruction of Maxwell model for effective thermal conductivity of composite materials

Cited by 77 publications

References 23 publications

Thermal properties and behavior of microencapsulated sugarcane wax phase change material

Thermal properties and behavior of microencapsulated sugarcane wax phase change material

Thermally enhanced polyolefin composites: fundamentals, progress, challenges, and prospects

Thermal conductivity of cast iron -A review

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