Preparation and effective thermal conductivity of a Paraffin/ Metal Foam composite

Idi, Mohamed Moussa El; Karkri, Mustapha; Kraiem, Manel

doi:10.1016/j.est.2020.102077

Cited by 65 publications

(11 citation statements)

References 50 publications

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“…The introduction of substances with a high thermal conductivity, such as graphene, into these systems improves the thermal properties of PCMs. Among them, metals [ 4 ], metal oxides [ 5 ], and boron nitride [ 6 , 7 ] could be mentioned. Carbon-based substances, such as graphene, are among the most popular additives due to their relatively high thermal conductivity [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Modified Technogenic Asphaltenes as Enhancers of the Thermal Conductivity of Paraffin

et al. 2023

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The low thermal conductivity of paraffin and other organic phase change materials limits their use in thermal energy storage devices. The introduction of components with a high thermal conductivity such as graphene into these materials leads to an increase in their thermal conductivity. In this work, we studied the use of inexpensive carbon fillers containing a polycyclic aromatic core, due to them having a structural similarity with graphene, to increase the thermal conductivity of paraffin. As such fillers, technogenic asphaltenes isolated from ethylene tar and their modified derivatives were used. It is shown that the optimal concentration of carbon fillers in the paraffin composite, which contributes to the formation of a structural framework and resistance to sedimentation, is 5 and 30 wt. %, while intermediate concentrations are ineffective, apparently due to the formation of large aggregates, the concentration of which is insufficient to form a strong framework. It has been found that the addition of asphaltenes modified with ammonium persulfate in acetic acid significantly increases the thermal conductivity of paraffin by up to 72%.

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Section: Introductionmentioning

confidence: 99%

Modified Technogenic Asphaltenes as Enhancers of the Thermal Conductivity of Paraffin

et al. 2023

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“…Instead of copper, many researchers used aluminum foam in PCM-based BTMS units. [155][156][157][158][159][160][161] The inclusion of aluminum foam in paraffin increased its thermal conductivity by 218 times [155] and reduced the phase transition time by 26.4% and 25.6% at 7000 and 12 000 W m −2 , respectively. [156] Furthermore, an increase in the aluminum pore density from 10 to 40 PPI reduced the maximum cell temperature by 8.6%.…”

Section: Pcms With Metallic Foamsmentioning

confidence: 99%

Critical Review on Internal and External Battery Thermal Management Systems for Fast Charging Applications

Thakur

Ahmed

Kang

et al. 2022

Advanced Energy Materials

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“…The results show that the TC of the paraffin wax/foamed nickel composite is nearly 3 times of pure paraffin, and the TC of the paraffin/foamed copper composite is nearly 15 times of pure paraffin. El Idi et al 91 was used to produce paraffin/nickel foam and paraffin/aluminum foam CPCM by vacuum impregnation. The TC of paraffin/ nickel foam was 6 times of pure paraffin, and the TC of paraffin/aluminum foam was nearly 18 times of pure paraffin.…”

Section: Role Of Additives and Comparativementioning

confidence: 99%

Comparative Analysis of Additives for Increasing Thermal Conductivity of Phase Change Materials: A Review

Zhang

et al. 2022

Energy Fuels

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The use of cold storage devices to store energy at low peaks of power usage and release it at peaks is an economic measure. It is also one of the main means to solve the imbalance between electricity shortages during the day and abundance at night. Adding cold storage balls equipped with phase change materials (PCMs) into water cold storage devices can utilize the sensible heat of water and the latent heat of PCMs for cold storage, which has a high energy storage density and can provide cold water with a suitable temperature. PCMs can be divided into organic phase change materials (OPCMs) and inorganic phase change materials (IPCMs), but both have defects. Adding additives or other materials to them to form composite phase change materials (CPCMs) can obtain suitable thermal properties. In the process of material application, some PCMs have problems of poor thermal conductivity (TC) and liquid leakage. The use of additives such as expanded graphite (EG), metal foam, and nanoparticles is a better solution to the above problems. In recent years, many scholars have researched PCMs and additives for increasing thermal conductivity (AITC). However, there is still a lack of detailed comparison among EG, metal foam, and nanoparticles. This article will introduce the PCMs used in the temperature zone (TZ) of cold storage air-conditioning systems (CSASs) and analyze their advantages, disadvantages, and improvement methods. This paper will focus on the latest research on the effect of additives such as nanoparticles, EG, and metal foam on the TC of PCMs. It will also compare the special effects of AITC in preventing supercooling, preventing phase separation, preventing leakage of liquid PCMs, and flame retarding. The future research directions of AITC will be discussed.

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Preparation and effective thermal conductivity of a Paraffin/ Metal Foam composite

Cited by 65 publications

References 50 publications

Modified Technogenic Asphaltenes as Enhancers of the Thermal Conductivity of Paraffin

Modified Technogenic Asphaltenes as Enhancers of the Thermal Conductivity of Paraffin

Critical Review on Internal and External Battery Thermal Management Systems for Fast Charging Applications

Comparative Analysis of Additives for Increasing Thermal Conductivity of Phase Change Materials: A Review

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