Thermal and mechanical performance of a novel 3D printed macro-encapsulation method for phase change materials

2021 ◽  
pp. 103124
Author(s):  
Marcus Maier ◽  
Brian Salazar ◽  
Cise Unluer ◽  
Hayden K. Taylor ◽  
Claudia P. Ostertag
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Mechanical Performance ◽  
3D Printed ◽  
Encapsulation Method

scholarly journals Numerical analysis of mechanical reliability of multi-coated phase change materials

2021 ◽  
Vol 321 ◽  
pp. 02019
Author(s):  
Josep Forner-Escrig ◽  
Nuria Navarrete ◽  
Roberto Palma ◽  
Damiano La Zara ◽  
Aristeidis Goulas ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Phase Change ◽  
Metallic Nanoparticles ◽  
Phase Change Materials ◽  
Mechanical Performance ◽  
Atomic Layer ◽  
Element Model ◽  
Failure Criteria ◽  
Mechanical Reliability ◽  
Geometrical Properties

Nanoencapsulated phase change materials (nePCMs) are nowadays under research for thermal energy storage purposes. NePCMs are composed of a phase change core surrounded by a shell that confines the core when molten. One of the main concerns of nePCMs when subjected to thermal processes is the mechanical failure of the passivation shell initially present in commercial metallic nanoparticles. In order to overcome this issue, multi-coated nePCMs, based on the synthesis of an additional coating by atomic layer deposition, appear to be as a candidate solution. With the objective of studying the influence of the composition and thickness of the additional nePCM shells on their probability of failure, a numerical tool combining a thermomechanical finite element model with phase change and Monte Carlo algorithms is developed. This tool also allows including the uncertainty of material and geometrical properties into the numerical analysis to account for their influence in the mechanical performance of nePCMs. In the present work, the mechanical reliability of SiO2 and Al2O3 coatings on Sn@SnOx nanoparticles is assessed by considering both deterministic and probabilistic failure criteria and Al2O3 coatings appear to have a better mechanical performance than their SiO2 counterparts.

scholarly journals Phase Change Material (PCM) Microcapsules for Thermal Energy Storage

2020 ◽  
Vol 2020 ◽  
pp. 1-20 ◽  
Author(s):  
Guangjian Peng ◽  
Guijing Dou ◽  
Yahao Hu ◽  
Yiheng Sun ◽  
Zhitong Chen
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Mechanical Performance ◽  
Energy Systems ◽  
Heat Transfer Area ◽  
Change Material

Phase change materials (PCMs) are gaining increasing attention and becoming popular in the thermal energy storage field. Microcapsules enhance thermal and mechanical performance of PCMs used in thermal energy storage by increasing the heat transfer area and preventing the leakage of melting materials. Nowadays, a large number of studies about PCM microcapsules have been published to elaborate their benefits in energy systems. In this paper, a comprehensive review has been carried out on PCM microcapsules for thermal energy storage. Five aspects have been discussed in this review: classification of PCMs, encapsulation shell materials, microencapsulation techniques, PCM microcapsules’ characterizations, and thermal applications. This review aims to help the researchers from various fields better understand PCM microcapsules and provide critical guidance for utilizing this technology for future thermal energy storage.

scholarly journals Differential scanning calorimetry based evaluation of 3D printed PLA for phase change materials encapsulation or as container material of heat storage tanks

2019 ◽  
Vol 161 ◽  
pp. 429-437 ◽  
Author(s):  
Pavlos K. Pandis ◽  
Stamatoula Papaioannou ◽  
Maria K. Koukou ◽  
Michalis Gr. Vrachopoulos ◽  
Vassilis N. Stathopoulos
Keyword(s):  
Differential Scanning Calorimetry ◽  
Phase Change ◽  
Phase Change Materials ◽  
Heat Storage ◽  
Storage Tanks ◽  
Scanning Calorimetry ◽  
3D Printed ◽  
Container Material

3D-Printed PCM/HDPE Composites for Battery Thermal Management

2018 ◽  
Author(s):  
Thomas B. Freeman ◽  
Kaloki Nabutola ◽  
David Spitzer ◽  
Patrick N. Currier ◽  
Sandra K. S. Boetcher
Keyword(s):  
Phase Change ◽  
Thermal Management ◽  
Latent Heat ◽  
Phase Change Materials ◽  
Hybrid Electric Vehicles ◽  
Li Ion Batteries ◽  
Dsc Measurements ◽  
Battery Thermal Management ◽  
3D Printed ◽  
Li Ion

Phase-change materials (PCMs) are a useful alternative to more traditional methods of thermal management of Li-ion batteries in electric or hybrid-electric vehicles. PCMs are materials which absorb large amounts of latent heat and undergo solid-to-liquid phase change at near-constant temperature. The goal of the research is to experimentally investigate the thermal properties of a novel shape-stabilized PCM/HDPE composite extruded filament. The extruded filament can then be used in a 3D printer for custom PCM/HDPE shapes. The PCM used in the study is PureTemp PCM 42, which is an organic-based material that melts around 42° C. Four PCM/HDPE mixtures were investigated (all percentages by mass): 20/80, 30/70, 40/60, and 50/50. Preliminary findings include differential scanning calorimeter (DSC) measurements of melting temperature and latent heat as well as scanning electron microscope (SEM) pictures of filament composition.

scholarly journals A Review on Phase Change Materials Incorporation in Asphalt Pavement

2018 ◽  
Vol 3 (2) ◽  
pp. 171
Author(s):  
Intan Kumalasari ◽  
Madzlan Napiah ◽  
Muslich H. Sutanto
Keyword(s):  
Porous Material ◽  
Phase Change ◽  
Phase Change Material ◽  
Asphalt Concrete ◽  
Phase Change Materials ◽  
Mechanical Performance ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Pavement Temperature ◽  
Change Material

Phase Change Material (later to be referred as PCM) has been successfully utilized in some areas. PCM has emerged as one of the materials for pavement temperature reducing due to its latent heat. Some research has been done regarding this topic. The objective of this paper is to review the development of PCM in asphalt pavement. The review has shown that organic PCM appears as the favourite PCM in asphalt concrete studies. Choice of porous material depends on method of incorporation. Reduction of temperature in PCM-asphalt mixture compared to conventional one is undoubtable. However, the mechanical performance of PCM-asphalt mixture need to be explored.

scholarly journals A Novel Encapsulation Method for Phase Change Materials with a AgBr Shell as a Thermal Energy Storage Material

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 717 ◽  
Author(s):  
Huanmei Yuan ◽  
Hao Bai ◽  
Minghui Chi ◽  
Xu Zhang ◽  
Jian Zhang ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Energy Storage ◽  
Phase Change ◽  
Phase Change Materials ◽  
Energy Storage Materials ◽  
Good Thermal Stability ◽  
Storage Materials ◽  
Encapsulation Method ◽  
Materials Used ◽  
Thermal Energy Storage Material

Micro/nanoencapsulated phase change materials, used typically as energy storage materials, are frequently applied in energy-saving and energy-efficient processes. In this work, we proposed a novel method for the micro/nanoencapsulation of phase change materials (PCMs), which has the advantage of simple operation and can be suitable for encapsulation of more than one PCM. Fatty acid PCMs, such as steric acid and palmitic acid, and non-fatty acid PCMs, like beeswax, have both been successfully micro/nanoencapsulated by a silver bromide (AgBr) shell with this method. The obtained fatty acid/AgBr micro/nanocapsules, with diameters of less than 1 µm, show good thermal storage capacities over 150 J/g with their encapsulation ratios as high as 92.4%. Similarly, the prepared beeswax/AgBr micro/nanocapsules show a high encapsulation ratio. In addition, all the micro/nanocapsules exhibit good thermal stability. Therefore, the method developed by this work is highly-efficient for the encapsulation of PCMs, which is beneficial for PCMs in various applications as energy storage materials.

scholarly journals Modification of asphalt mixtures for cold regions using microencapsulated phase change materials

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Moises Bueno ◽  
Muhammad Rafiq Kakar ◽  
Zakariaa Refaa ◽  
Jörg Worlitschek ◽  
Anastasia Stamatiou ◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Mechanical Response ◽  
Mechanical Performance ◽  
Asphalt Mixtures ◽  
Microencapsulated Phase Change Materials ◽  
Road Surfaces ◽  
Asphalt Materials ◽  
Reference Specimens ◽  
Reference Mixture

AbstractPhase change materials (PCMs) may be used to regulate the temperature of road surfaces to avoid low-temperature damages when asphalt materials become brittle and prone to cracking. With this in mind, different asphalt mixtures were modified with microencapsulated phase change materials (i.e. tetradecane) to assess their thermal benefits during the phase change process. Likewise, the effect on the mechanical performance of PCMs as a replacement of mineral filler was assessed. Special attention was paid to dry and wet modification processes for incorporating the PCMs into the mixtures. The results showed that PCM modifications are indeed able to slow down cooling and affect temperatures below zero. Approximately, a maximum of 2.5 °C offset was achieved under the tested cooling conditions compared to the unmodified reference specimens. Regarding the mechanical response at 0 °C and 10 °C, the results indicated that the PCM modification significantly reduces the stiffness of the material in comparison with the values obtained for the reference mixture.

Advanced 3D-printed phase change materials

Matter ◽  
2021 ◽  
Vol 4 (11) ◽  
pp. 3374-3376
Author(s):  
Panpan Liu ◽  
Xiao Chen ◽  
Ge Wang
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
3D Printed

scholarly journals The Effect of a Phase Change on the Temperature Evolution during the Deposition Stage in Fused Filament Fabrication

Computers ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 19
Author(s):  
Sidonie F. Costa ◽  
Fernando M. Duarte ◽  
José A. Covas
Keyword(s):  
Phase Change ◽  
Energy Equation ◽  
Mechanical Performance ◽  
Amorphous Material ◽  
Acrylonitrile Butadiene Styrene ◽  
Fused Filament Fabrication ◽  
Crystalline Polymers ◽  
3D Printed ◽  
Manufacturing Techniques ◽  
Butadiene Styrene

Additive Manufacturing Techniques such as Fused Filament Fabrication (FFF) produce 3D parts with complex geometries directly from a computer model without the need of using molds and tools, by gradually depositing material(s), usually in layers. Due to the rapid growth of these techniques, researchers have been increasingly interested in the availability of strategies, models or data that may assist process optimization. In fact, 3D printed parts often exhibit limited mechanical performance, which is usually the result of poor bonding between adjacent filaments. In turn, the latter is influenced by the temperature field history during deposition. This study aims at evaluating the influence of the phase change from the melt to the solid state undergone by semi-crystalline polymers such as Polylactic Acid (PLA), on the heat transfer during the deposition stage. The energy equation considering solidification is solved analytically and then inserted into a MatLab® code to model cooling in FFF. The deposition and cooling of simple geometries is studied first, in order to assess the differences in cooling of amorphous and semi-crystalline polymers. Acrylonitrile Butadiene Styrene (ABS) was taken as representing an amorphous material. Then, the deposition and cooling of a realistic 3D part is investigated, and the influence of the build orientation is discussed.

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