Effect of microstructure on melting in metal-foam/paraffin composite phase change materials

Abishek, S.; King, Andrew; Nadim, Nima; Mullins, Benjamin J.

doi:10.1016/j.ijheatmasstransfer.2018.07.054

Cited by 76 publications

(23 citation statements)

References 36 publications

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“…[1][2][3][4][5][6][7][8][9][10] To mitigate some of the temperature-dependent properties of ski waxes, manufacturers have included additives into their wax compositions that enhance glide performance, and some have even specialized their waxes to speci c temperature conditions, including low temperature waxes, high temperature waxes, and all-temperature waxes. [1][2][3][4][11][12][13] The characterization of ski waxes and ski base treatments includes several limitations. First, the data obtained in a laboratory setting, even if it is controlled, does not include all of the environmental conditions that may be present during skiing.…”

Section: Introductionmentioning

confidence: 99%

Video Analysis Techniques for Calculating the Coefficient of Friction of Ski Wax and Ski Base Treatments Using Miniature Ski Sleds

Bates

Dobron

Albertson

et al. 2022

Preprint

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Testing the properties of ski base treatments is a challenging task because there are many environmental conditions and user preferences associated with both the testing and performance outcomes. In this work, we present a method for testing the coefficient of friction, and how it changes over repeated ski runs. We develop a ski track system to control the slope and geographic topography of the testing site, and we use video analysis techniques to calculate the change in the coefficient of friction across three ski runs. We have found an increase in the coefficient of friction after repeated ski runs, which indicates that there is some abrasion of the ski base treatments with repeated testing.

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Section: Introductionmentioning

confidence: 99%

Video Analysis Techniques for Calculating the Coefficient of Friction of Ski Wax and Ski Base Treatments Using Miniature Ski Sleds

Bates

Dobron

Albertson

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…However, low thermal conductivity (usually less than 0.20 W/m/K) is a crucial suffering to pure organic PCMs, which thus notably impairs their applications as medias in many scenarios of LHTES. [11][12][13] Numerous strategies have been proposed to address the tough issue from the perspectives of PCMs themselves, containers layouts or interactions between them and it is identified that metal foams can serve as effectively thermal conductivity enhancers to fasten the thermal response of PCMs due to their highly conducting skeletons. [14][15][16][17][18][19][20][21] Heat flux is transferred to the entire region along the ligaments of metal foams and PCMs in the pores of metal foams are heated by the metal foams matrix simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Investigations on transient thermal performance of phase change materials embedded in metal foams for latent heat thermal energy storage

Zhang

Yuan

et al. 2021

Intl J of Energy Research

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A feasibly numerical model based on enthalpy-porosity and local thermal nonequilibrium is proposed to explore the transient heat transfer characteristics of phase change materials (PCMs) embedded in metal foams during charging process. Parametric analysis elaborates effects of various parameters on thermal performance of PCMs. Heat transfer and storage performances are further conducted from the perspectives of transient temperature. Results indicate that metal foams are capable of boosting melting rate of PCMs and phase change heat transfer is dominated through thermal conduction with obviously weakened natural convection. Metal foams with less thermal conductivity lead to lower temperature differences between metal foams and PCMs and more uniform temperature distributions of PCMs embedded in metal foams are developed over pure PCMs case. The complete melting times of PCMs can be shorten by approximately of 55.03%, 54.75% and 49.58%, when incorporated in metal foams and superiorities are even more obvious under lower porosity, larger pore density or higher heat flux. Greatest results in profiles and contours of temperature difference correspond well to mushy zones of phase transitions. Thermal energy is primarily reserved in PCMs in the form of latent heat. In conclusion, this paper is expected to be explicitly beneficial to broaden phase change energy storage applications.

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“…Generally, the down thermal conductivity of organic phase‐change‐materials (OPCMs) reasons a significant temperature gradient inside phase change materials (PCMs) pending the heat attraction, which causes heat reposition and as well as the temperature increases of Li‐ion batteries. By adding thermal conductivity increment materials, such as Nano‐graphite sheets, 13,14 metal foam, 15 carbon fiber, 16 and extended graphite 17,18 in PCMs, ameliorated thermal conductive efficiency of the PCMs can be attained, and the heat may be quickly transmitted to the PCM with no heat reposition in the batteries. For example, Lin et al 19 introduced a high thermal conductivity PCM which composed paraffin with the extended graphite matrix and exerted on LiFePO 4 battery packs.…”

Section: Introductionmentioning

confidence: 99%

Thermal behavior of lithium batteries used in electric vehicles using phase change materials

Bashirpour‐Bonab

2020

Int J Energy Res

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Electric vehicles equipped with lithium-ion batteries face a huge challenge, and the fact that battery life is very much affected by the temperature conditions of their operating environment, the heat reduces battery life cycle and time and increases the likelihood of thermal degradation and explosion. This problem has forced engineers to cool the battery. The methods used to cool the battery includes a cool water method (passing water or a dielectric fluid from the battery pack), cooling air (blowing air into the battery compartment by the fan), using a refrigeration system (such as cooling screens), and the use of phase-change material (PCM). In this research after reviewing and referring to valid authorities, it was found that PCMs are superior to all three other cooling systems because the airconditioning system is not very desirable due to the high-temperature gradient between the battery cells. Also, cooling and refrigeration systems with refrigerant gases will also cost a very high cost on the electric car. The results of the studies showed that the cooling the battery using the PCM creates a similar temperature profile between the batteries in the battery pack, the temperature gradient is much smaller than the air cooler and cool water, and the final cost will be much lower. Also, it performs more efficiently in high-speed road dynamics and increases the battery life of an electric car or electric hybrid. K E Y W O R D S electric vehicles, lithium-ion batteries, phase-change materials (PCMs), thermal energy storage (TES)

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Effect of microstructure on melting in metal-foam/paraffin composite phase change materials

Cited by 76 publications

References 36 publications

Video Analysis Techniques for Calculating the Coefficient of Friction of Ski Wax and Ski Base Treatments Using Miniature Ski Sleds

Video Analysis Techniques for Calculating the Coefficient of Friction of Ski Wax and Ski Base Treatments Using Miniature Ski Sleds

Investigations on transient thermal performance of phase change materials embedded in metal foams for latent heat thermal energy storage

Thermal behavior of lithium batteries used in electric vehicles using phase change materials

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