The effects of various carbon nanofillers on the thermal properties of paraffin for energy storage applications

Wu, Shuying; Tong, Xuan; Nie, Changda; Peng, Deqi; Gong, Shuguang; Wang, Z. Q.

doi:10.1007/s10973-015-5153-4

Cited by 35 publications

(4 citation statements)

References 30 publications

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“…As reported in a previous study by Wu et al 34 first the paraffin was melted at 90° and then the MWCNTs were added to the molten paraffin. Premixing was done by a magnetic stirrer for 15 minutes, and final stage of mixing was done by an ultrasound mixer until a homogeneous solution was formed.…”

Section: Methodsmentioning

confidence: 99%

Polypropylene aerogel‐based composites with paraffin and MWCNTs as phase change materials

Abdolmaleki,

Jafari,

Golriz

et al. 2024

Polymer Engineering & Sci

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The development of energy storage materials is crucial for effective energy management. In this study, we present the creation of a composite material comprising polypropylene (PP) aerogel, paraffin, and multi‐walled carbon nanotubes (MWCNTs) as a phase change material (PCM). Our process begins with the dissolution of PP granules, serving as the foundational step. Subsequently, various antisolvents are systematically employed to induce the formation of PP gels. The process culminates in the fabrication of aerogels through the established freeze‐drying technique. Importantly, our examination of porosity highlights the significant impact of antisolvent selection on the pore structure and specific surface area of the resulting aerogels. Our weight measurements demonstrate the remarkable capacity of the lightweight PP aerogel, characterized by substantial porosity and inherent hydrophobicity, to adsorb paraffin, capturing up to five times its weight. These findings are substantiated through structural analyses, including Fourier‐transform infrared spectroscopy (FTIR) and X‐ray diffraction (XRD). Thermal analysis of the PP/PCM/MWCNTs composites reveals the achievement of the highest enthalpy, reaching 125 J g−1, representing a modest 13% reduction compared to pure paraffin. Furthermore, all samples exhibit exceptional thermal stability even after 50 thermal cycles. Notably, Xenon flash analysis (XFA) shows an approximate 800% increase in thermal conductivity compared with pure paraffin and a substantial 35% increase compared to PP/paraffin composites. In conclusion, our lightweight aerogel‐based PCM demonstrates great promise for various thermal management applications.Highlights Cost‐effective PP aerogel has a great potential for hosting paraffin as PCM. The type of antisolvent could have a huge effect on PP aerogel's structure. PP aerogel/Paraffin/MWCNT could effectively enhance thermal conductivity. Available PP/Paraffin/MWCNT has a great potential for PCM applications.

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Section: Methodsmentioning

confidence: 99%

Polypropylene aerogel‐based composites with paraffin and MWCNTs as phase change materials

Abdolmaleki,

Jafari,

Golriz

et al. 2024

Polymer Engineering & Sci

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“…Zeng et al (2008) added Ag nanoparticles to myristyl alcohol, and the thermal conductivity increased with the increase of Ag nanoparticles, and the phase transition temperature and latent heat decreased slightly. Wu et al (2016) prepared nanocomposite PCM by mixing paraffin with multi-walled carbon nanotubes (MWCNTs). The results showed that as the loading of carbon nanofillers increased, the thermal conductivity of the nanocomposite PCM increased, and the phase change enthalpy gradually decreased.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Composite Phase Change Materials for Building Energy Saving

et al. 2021

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Composites composed of paraffin wax and copper foam with porosity of 95 % and pore density of 15 ppi, 30 ppi, and 50 ppi were prepared by the melt impregnation method. Two building models of the same size were made using gypsum board. The roof of the experimental model was covered with 50ppi copper foam /paraffin composite phase change board, and the roof of the reference model was covered with foam insulation board. The heat transfer experiment was conducted with a constant heat flux. EnergyPlus software was also employed to simulate the energy saving effects of the building models. The size and material of the model established during the simulation are consistent with the experimental model. Experimental results showed that the phase change composite board delayed the highest indoor temperature for 1.5 h, and it also reduced the indoor maximum temperature by 1.2° and the indoor energy consumption by 21 %. The simulation results showed that the phase change composites board delayed the appearance of the highest indoor temperature by 1.3 h and reduced the highest indoor temperature by 1.1°C, and the maximum indoor energy consumption decreased by 19 %. The copper foam/paraffin composite material can effectively improve the thermal comfort and reduce the energy consumption of the building model.

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“…Zeng et al [19] added Ag nanoparticles to myristyl alcohol, and the thermal conductivity increased with the increase of Ag nanoparticles, and the phase transition temperature and latent heat decreased slightly. Wu et al [20] prepared nanocomposite PCM by mixing paraffin with multiwalled carbon nanotubes (MWCNTs). The results showed that as the loading of carbon nanofillers increased, the thermal conductivity of the nanocomposite PCM increased, and the phase change enthalpy gradually decreased.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Investigation on the Control Mechanism and Heat Transfer Enhancement of Composite Phase Change Materials

Hanxue¹,

Yang²,

Zhang³

et al. 2021

Preprint

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In order to obtain phase change materials with suitable melting point, latent heat and thermal conductivity, this paper employed the liquid paraffin with a melting point of 17°C and solid paraffin with a melting point of 41°C in different proportions to fabricate PCM composites. By adjusting the mixing ratio of short-chain hydrocarbons and long-chain hydrocarbons in paraffin wax, phase change materials with different phase change ranges were obtained to meet the requirements of practical applications. A variety of copper foam /paraffin composite phase change materials with different porosities and pore densities were prepared by the melt dipping method. The influence of the porosity and pore density on the thermal conductivity of copper foam/paraffin composite was explored. The experimental results show that mixed paraffin can control the melting point and latent heat of composite phase change materials. Copper foam can greatly increase the thermal conductivity of composite phase change materials with the porosity has a greater impact and the pore density has a less effect. The thermal conductivity of composites can be increased by a maximum 20 times.

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The effects of various carbon nanofillers on the thermal properties of paraffin for energy storage applications

Cited by 35 publications

References 30 publications

Polypropylene aerogel‐based composites with paraffin and MWCNTs as phase change materials

Polypropylene aerogel‐based composites with paraffin and MWCNTs as phase change materials

Experimental and Numerical Investigation of Composite Phase Change Materials for Building Energy Saving

An Experimental Investigation on the Control Mechanism and Heat Transfer Enhancement of Composite Phase Change Materials

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