Relevant bibliographies by topics / Composite phase change material

Academic literature on the topic 'Composite phase change material'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Composite phase change material"

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Shi, Qi Song, and Tai Qi Liu. "Preparation and Performance of Polyethylene Glycol / Polyacrylamide Phase Change Material." Advanced Materials Research 284-286 (July 2011): 1983–86. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.1983.

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This study involved the preparation and characterization of polyethylene glycol (PEG)/ polyacrylamide (PAM) composite as solid-solid phase change materials (PCM). In this study, the polyethylene glycol / polyacrylamide composites as solid-solid phase change material was prepared, and the phase change behavior and crystalline morphology of the phase change materials were investigated using differential scanning calorimeter (DSC) , wide-angle X-ray diffraction (WAXD). Results indicated that the composite remained solid when the weight percentage of PEG was less than 60%. The PEG/PAM composite that exhibited solid-solid phase change behavior can be used as a new kind of phase change material for the shortage of thermal energy and temperature control.
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Hou, Changlin, Wei Zhang, Renshan Chen, and Haonan SG. "Study on Temperature Control and Anti-icing Performance of Asphalt Pavement Based on Composite Phase Change Material with Wide Phase Change Interval." Journal of Physics: Conference Series 2393, no. 1 (December 1, 2022): 012031. http://dx.doi.org/10.1088/1742-6596/2393/1/012031.

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Abstract To improve the temperature regulation effect of phase change materials on asphalt pavement, phase change materials A and B were prepared for the optimal phase change temperature range of anti-condensation ice and snow melting at -5°C~5°C in this paper. According to the phase change temperature range of phase change materials A and B, the phase change material composite optimization temperature regulation performance test was carried out to form a composite phase change material with temperature gradient laps. The influence of composite phase change materials on asphalt performance was tested. The test shows that the best composite ratio of phase change material A and phase change material B is 5:1, and the temperature regulation performance of composite phase change material is better than that of A and B alone. The ability of composite phase change material to inhibit cooling increases with the amount of admixture, and the best admixture ratio in the mixture is 5 ‰ of the total mass of the mixture.
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Mao, Jun, Shui Lin Zheng, Yu Zhong Zhang, Yan Ping Bai, and Yue Liu. "Preparation and Characterization of Diatomite Loaded Composite Phase Change Materials." Applied Mechanics and Materials 320 (May 2013): 314–19. http://dx.doi.org/10.4028/www.scientific.net/amm.320.314.

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Organic phase change materials like paraffin as phase change material, modified diatomite as carrier, composite phase change material with proper phase change temperature and larger phase change enthalpy is prepared by melt blending. The structure and performance of composite phase material are characterized using SEM, FI-IR and synthesized thermal analyzer DSC. The results show that the phase change temperature of composite phase change material is 30, and phase change enthalpy is 89.54J/g. With every part preserved, phase change particles are distributed in the diatomite/melted paraffin matrix evenly. Stable composite phase change materials are prepared with diatomite as carrier and paraffin as PCM, which are bonded with Vander Waals forces in the form of physical adsorption.
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Wu, Wei, Yu Feng Chen, Xing Shi, Shi Chao Zhang, and Hao Ran Sun. "Preparation and Properties of Polyalcohol Phase Change Material for Insulation." Key Engineering Materials 512-515 (June 2012): 936–39. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.936.

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In this paper, the composite phase change materials for insulation were prepared by melt-soaking method. Trimethylolethane (PG) was chosen to be the phase change material (PCM) and two kinds of porous materials as the supporting matrices separately. The effects of both matrices to PG were analyzed by X-ray diffraction (XRD), and the heat insulation properties of composites were evaluated by Plat heat insulation test device. At last, microstructures of composites were observed by scanning electron microscope (SEM) and their effects to composites were discussed.
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Jiang, Feng, Yong Le Hou, Yong Lin Hu, Wei Dong Zhu, and Qing Hua Wang. "Setting for the Application of Phase Change Paraffin in Block Masonry." Applied Mechanics and Materials 448-453 (October 2013): 1308–11. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.1308.

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This paper studies the insulation properties of masonry filling paraffin composite phase change material. With high density polyethylene (HDPE) as wrapping materials and solid-liquid mixing paraffin as phase change materials, solid-liquid mixed paraffin phase change material with different amount of admixture is prepared, and the problem of flowing after paraffin phase change is then solved. The phase change temperature and the phase change latent heat of composite phase change material with different amount of admixture are tested. The results showed that the composite material with 30% of 52 # solid paraffin, 70% of liquid paraffin, 70% of HDPE coating performs best as to the phase transition temperature and latent heat. On this basis, This paper studies the composite phase change wall with phase change materials 0%, 33%, 66% and100%. Results show that the composite phase change material wall’s heat preservation performance has significantly improved. the temperature fluctuation range of internal and external wall surface is 4.2 °C lower than unfilled wall.
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Liang, Jiyuan, Xuelai Zhang, and Jun Ji. "Hygroscopic phase change composite material——A review." Journal of Energy Storage 36 (April 2021): 102395. http://dx.doi.org/10.1016/j.est.2021.102395.

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FUKUCHI, Kohei, Katsuhiko SASAKI, Yusuke TOMIZAWA, Ken-ichi OHGUCHI, Ryohei SUZUKI, Tsuyoshi TAKAHASHI, and Takahito EGUCHI. "Strength Properties of Composite Material Containing Phase Change Material." Proceedings of Mechanical Engineering Congress, Japan 2018 (2018): J0450403. http://dx.doi.org/10.1299/jsmemecj.2018.j0450403.

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Pop, Lucian-Cristian, Mihaela Baibarac, Ion Anghel, and Lucian Baia. "Gypsum Composite Boards Incorporating Phase Change Materials: A Review." Journal of Nanoscience and Nanotechnology 21, no. 4 (April 1, 2021): 2269–77. http://dx.doi.org/10.1166/jnn.2021.18957.

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The purpose of this review is to provide an overview of the available gypsum based composite including various phase change materials employed to increase the thermal energy storage capacity of building materials. A wide range of materials such as n-alkane, saturated fatty acid, fatty acid esters etc are used as phase change materials. Adding carbonaceous material (carbon nanofibers, activated nanocarbon, graphite nanosheets etc.) to augment some properties is also a common practice. In addition, there are presented the methods of obtaining the nano/macro-composites together with some thermal characteristics of the newly prepared materials.
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Zong, Jianping, Defu Wang, Yanlin Jin, Xing Gao, and Xinxin Wang. "Preparation of Stearic acid/Diatomite Composite Phase Change Material." E3S Web of Conferences 245 (2021): 03070. http://dx.doi.org/10.1051/e3sconf/202124503070.

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The composite phase change material was prepared via the impregnation method using diatomaceous as the carrier and stearic acid as the phase change material. The effects of diatomite content, temperature, immersion time and pressure on the mass ratio of stearic acid and diatomaceous earth in the composite phase change materials were discussed. The experimental results showed that the optimum conditions for preparing stearic acid/diatomite composite phase change material were immersion temperature of 80℃, socking time of 2 h, diatomite mass fraction of 23.04%, and vacuum degree of 0.03 MPa. Finally, the infrared spectroscopy analysis of stearic acid/diatomite composite phase change energy storage material showed that there is no chemical reaction between stearic acid and diatomite. And they are held together by intermolecular forces.
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Zhao, Liang, Xiang Chen Fang, Gang Wang, and Hong Xu. "Preparation and Properties of Paraffin/Activated Carbon Composites as Phase Change Materials for Thermal Energy Storage." Advanced Materials Research 608-609 (December 2012): 1049–53. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.1049.

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Paraffin/activated carbon composites as phase change energy storage materials were prepared by absorbing paraffin into activated carbon. In composite materials, paraffin was used as phase change material (PCM) for thermal energy storage, and activated carbon acted as supporting material, ethanol was the solvent. A series of characterization were conducted to analyse and test the performance of the composite materials, and differential scanning calorimeter (DSC) results showed that the PCM-2 composite has the melting latent heat of 51.7 kJ/kg with melting temperature of 60.4°C. Due to the capillary and surface tension forces between paraffin and activated carbon, the leakage of melted paraffin from the composites can be prevented. In a word, the paraffin/activated carbon composites have a good thermal stability and can be used repeatedly.
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Dissertations / Theses on the topic "Composite phase change material"

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Mustaffar, Ahmad Fadhlan Bin. "Irregular aluminium foam and phase change material composite in transient thermal management." Thesis, University of Newcastle upon Tyne, 2016. http://hdl.handle.net/10443/3338.

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Traction systems generate high loads of waste heat, which need to be removed for efficient operations. A new transient heat sink is proposed, which is based on salt hydrate phase change material (PCM). The heat sink would absorb heat during the short stationary phase i.e. at stations in which the PCM melts, a process accelerated by aluminium foam as it increases the rate of heat transfer within the PCM. When the train moves, the PCM is solidified via a forced convection stack. This creates a passive and efficient thermal solution, especially once heat pipe is employed as heat conduit. At the outset, the characteristics of the foam needed to be accurately determined. The foam was uncommon as its pore morphology was irregular, therefore it was scanned in a medical computed tomography (CT) scanner, which allowed for the construction of a three dimensional (3D) model. The model accuracy was enhanced by software, resulting in an extremely useful analytical tool. The model enabled important structural parameters to be measured e.g. porosity and specific surface area, which were crucial for the subsequent thermal and fluid flow analyses. A defect dense region was also detected, the effect of which was further investigated. Interestingly in the volume devoid of this defect, the porosity and specific surface area were uniform. A test rig was constructed that mimicked liquid cooling (or in the planned application, heat pipe cooling) in power electronics. At the core was a heat sink of salt hydrate PCM, impregnated within the foam. The sink with its current specifications (with liquid cooling) was able to absorb a thermal load consistent from a group of 4-5 IGBTs, which dissipated a low power of 20W per module during stops. The heating period of 1600-3500s per cycle meant the sink could be fitted to intercity locomotives. The foam increased the effective thermal conductivity by a factor of 24, from 0.45 to 10.83 W/m.K. 3D volume averaged numerical simulation was validated by experiment, which could be used to facilitate scale up or redesign for further optimization. As well as a support structure for the storage component of the system, the foam could replace conventional fins in forced convection, adding value to the potential manufacturer of the system. Heat transfer coefficient calculation incorporated the actual surface area that was derived from the 3D model, a first for metal foam studies. Results have shown a good Nu/Re correlation, comparable with other metal foam works.
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Huang, Yaoting. "Fundamental studies on nano-composite phase change materials (PCM) for cold storage applications." Thesis, University of Birmingham, 2019. http://etheses.bham.ac.uk//id/eprint/8844/.

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This thesis studies the thermophysical properties and the phase change behaviour of EG-water and Salt-water based PCMs for cold storage applications, and investigates the role of adding MCNT on the thermophysical properties and the phase change processes. First, the structure of MCNT clusters is linked to the rheological behaviour of the nanofluids by fitting the experimental viscosity data to the modified K-D model. Second, the MCNT cluster information is used to predict thermal conductivity. The effective thermal conductivity of nanofluids not only relies on the particle concentration, but also depends on the particle cluster structure. The specific heat of MCNT nanofluids is decreasing proportionally with the concentration of MCNT. The supercooling degree of EG-water and salt-water based samples can be reduced by adding MCNT particles. The crystallization process of salt-water basefluid and nanofluid was observed and recorded under an optical microscope with cooling stage. Adding MCNT can promote the crystal growth rate.
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Boozula, Aravind Reddy. "Use of Bio-Product/Phase Change Material Composite in the Building Envelope for Building Thermal Control and Energy Savings." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1248391/.

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This research investigates the bio-products/phase change material (PCM) composites for the building envelope application. Bio-products, such as wood and herb, are porous medium, which can be applied in the building envelope for thermal insulation purpose. PCM is infiltrated into the bio-product (porous medium) to form a composite material. The PCM can absorb/release large amount of latent heat of fusion from/to the building environment during the melting/solidification process. Hence, the PCM-based composite material in the building envelope can efficiently adjust the building interior temperature by utilizing the phase change process, which improves the thermal insulation, and therefore, reduces the load on the HVAC system. Paraffin wax was considered as the PCM in the current studies. The building energy savings were investigated by comparing the composite building envelope material with the conventional material in a unique Zero-Energy (ZØE) Research Lab building at University of North Texas (UNT) through building energy simulation programs (i.e., eQUEST and EnergyPlus). The exact climatic conditions of the local area (Denton, Texas) were used as the input values in the simulations. It was found that the EnergyPlus building simulation program was more suitable for the PCM based building envelope using the latent heat property. Therefore, based on the EnergyPlus simulations, when the conventional structure insulated panel (SIP) in the roof and wall structures were replaced by the herb panel or herb/PCM composite, it was found that around 16.0% of energy savings in heating load and 11.0% in cooling load were obtained by using PCM in the bio-product porous medium.
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Green, Craig Elkton. "Composite thermal capacitors for transient thermal management of multicore microprocessors." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/44772.

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While 3D stacked multi-processor technology offers the potential for significant computing advantages, these architectures also face the significant challenge of small, localized hotspots with very large heat fluxes due to the placement of asymmetric cores, heterogeneous devices and performance driven layouts. In this thesis, a new thermal management solution is introduced that seeks to maximize the performance of microprocessors with dynamically managed power profiles. To mitigate the non-uniformities in chip temperature profiles resulting from the dynamic power maps, solid-liquid phase change materials (PCMs) with an embedded heat spreader network are strategically positioned near localized hotspots, resulting in a large increase in the local thermal capacitance in these problematic areas. Theoretical analysis shows that the increase in local thermal capacitance results in an almost twenty-fold increase in the time that a thermally constrained core can operate before a power gating or core migration event is required. Coupled to the PCMs are solid state coolers (SSCs) that serve as a means for fast regeneration of the PCMs during the cool down periods associated with throttling events. Using this combined PCM/SSC approach allows for devices that operate with the desirable combination of low throttling frequency and large overall core duty cycles, thus maximizing computational throughput. The impact of the thermophysical properties of the PCM on the device operating characteristics has been investigated from first principles in order to better inform the PCM selection or design process. Complementary to the theoretical characterization of the proposed thermal solution, a prototype device called a "Composite Thermal Capacitor (CTC)" that monolithically integrates micro heaters, PCMs and a spreader matrix into a Si test chip was fabricated and tested to validate the efficacy of the concept. A prototype CTC was shown to increase allowable device operating times by over 7X and address heat fluxes of up to ~395 W/cm2. Various methods for regenerating the CTC have been investigated, including air, liquid, and solid state cooling, and operational duty cycles of over 60% have been demonstrated.
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Li, Chuan. "Thermal energy storage using carbonate-salt-based composite phase change materials : linking materials properties to device performance." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7242/.

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Thermal energy storage (TES) has a crucial role to play in conserving and efficiently utilising energy, dealing with mismatch between demand and supply, and enhancing the performance and reliability of our current energy systems. This thesis concerns TES materials and devices with an aim to establish a relationship between TES device level performance to materials properties. This is a multiscale problem. The work focuses on the use of carbonate-salt-based composite phase change materials (CPCMs) for medium and high temperature applications. A CPCM consists of a carbonate salt based phase change material (PCM), a thermal conductivity enhancement material (TCEM, graphite flake in this work) and a ceramic skeleton material (CSM, MgO in this work). Both mathematical modelling and experiments were carried out to address the multiscale problem. The wettability of carbonate salt and MgO system is first studied, followed by exploring the CPCMs microstructure characteristics and formation mechanism, and then the effective thermal conductivity of the CPCMs is carried out based on the developed microstructures. At the last part, heat transfer behaviour of CPCMs based TES at component and device levels is investigated.
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Boozula, Aravind Reddy. "Use of Bio-Product/Phase Change Material Composites in the Building Envelope for Building Thermal Control and Energy Savings." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc1248391/.

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This research investigates the bio-products/phase change material (PCM) composites for the building envelope application. Bio-products, such as wood and herb, are porous medium, which can be applied in the building envelope for thermal insulation purpose. PCM is infiltrated into the bio-product (porous medium) to form a composite material. The PCM can absorb/release large amount of latent heat of fusion from/to the building environment during the melting/solidification process. Hence, the PCM-based composite material in the building envelope can efficiently adjust the building interior temperature by utilizing the phase change process, which improves the thermal insulation, and therefore, reduces the load on the HVAC system. Paraffin wax was considered as the PCM in the current studies. The building energy savings were investigated by comparing the composite building envelope material with the conventional material in a unique Zero-Energy (ZØE) Research Lab building at University of North Texas (UNT) through building energy simulation programs (i.e., eQUEST and EnergyPlus). The exact climatic conditions of the local area (Denton, Texas) were used as the input values in the simulations. It was found that the EnergyPlus building simulation program was more suitable for the PCM based building envelope using the latent heat property. Therefore, based on the EnergyPlus simulations, when the conventional structure insulated panel (SIP) in the roof and wall structures were replaced by the herb panel or herb/PCM composite, it was found that around 16.0% of energy savings in heating load and 11.0% in cooling load were obtained by using PCM in the bio-product porous medium.
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Harle, Thibault. "Création et caractérisation d'un matériau de construction composite incorporant un nouveau matériau à changement de phase solide-solide." Thesis, Cergy-Pontoise, 2016. http://www.theses.fr/2016CERG0874.

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Dans le cadre de la réduction des consommations d'énergies primaires des bâtiments, de nouveaux matériaux de constructions sont amenés à être développés. Les réglementations thermiques poussent les nouvelles constructions à être économes en énergie. Elles doivent aussi être moins impactantes sur l'environnement tout en garantissant le confort des occupants.Dans ce travail est présenté le développement d'un nouveau matériau de construction composite intégrant un matériau à changement de phase (MCP).Les MCP sont capables d'échanger passivement de l'énergie thermique avec leur environnement. Il permettent ainsi une régulation passive de la température intérieure.Suite à un état de l'art, sur les MCP et le plâtre, est présenté la synthèse et la caractérisation physico-chimique d'un nouveau MCP à transition solide-solide.L'incorporation du MCP préalablement synthétisé à un matériau de construction de type plâtre est ensuite développée. Le matériau composite ainsi obtenu est caractérisé thermiquement et mécaniquement.Dans un dernier temps des évaluations environnementales du MCP et du matériau composite sont réalisées
In a context of reduction of energy consumption in buildings, new buildings materials are developed. Thermal regulations require energy efficiency to buildings. They must be less impacting on the environment while ensuring occupant comfort.In this work is presented the development of a new composite building material incorporating a phase change material.PCM are able to exchange passively heat energy with their environment. It thus allow a passive control of the interior temperature of buildings.After a state of the art on PCM and plaster, a part is dedicated to synthesis and physicochemical characterisation of a new solid/solid PCM. In a third part the incorporation of the PCM previously synthesized in plaster is then developped. The composite material is mechanically and thermally characterized.In a last time environmental assessments of the PCM and the composite material are performed
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Batagar, Amina. "Assessing the thermal performance of phase change materials in composite hot humid/hot dry climates : an examination of office buildings in Abuja-Nigeria." Thesis, University of Newcastle upon Tyne, 2013. http://hdl.handle.net/10443/2146.

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The aim of this study is to investigate the possibility of using Phase Change Materials (PCM) in improving indoor thermal comfort while conserving electricity in office buildings in the composite Hot Humid/Hot Dry climate of Abuja, Nigeria. The first stage is a quantitative investigation of electricity consumption in 15 Nigerian office Buildings. Purpose-built mechanically cooled office buildings are selectively chosen across major Nigerian cities and climates. The surveyed data is analysed and used to construct a hypothetical office building as a base case. Scientifically validated software DesignBuilder v3 and EnergyPlus V6 and V7 are used for the parametric analysis of simulation results. The building simulations are used in two stages, firstly to test passive and climatically responsive scenarios to reduce electricity consumption then secondly to study the potential benefit of incorporating PCM in the building fabric and its effect on thermal comfort and electricity conservation. Results show that cooling, lighting, and appliance loads account for approximately 40%, 12% and 48% respectively of electricity consumption in the buildings audited. Power outages are frequently experienced necessitating alternative power usage. A data collection method is presented for energy auditors in locations where alternative back-up power is essential. Simulation results indicate that the magnitude of energy saving can be achieved by optimizing the passive and climate sensitive design aspects of the building and an electricity saving of 26% is predicted. Analysis indicates that it is difficult to achieve thermal comfort in office buildings in Abuja without mechanical cooling. Adding such a PCM to the building fabric of a cyclically cooled mechanical building may alleviate indoor discomfort for about 2 hours in case of power outage and is predicted to save 7% of cooling load. Cyclic cooling is the cooling of the interiors long enough to maintain comfort for a maximum duration within the working hours. The use of lightweight partitions instead of the heavyweight ones common in Nigeria is shown to a 2-fold improvement in consumption. Adding a PCM to light-weight partition walls with transition temperature of 24°C, conductivity of 0.5W/m K, and a thickness of 10mm gives the best predicted energy savings.
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Kinkelin, Christophe. "Etude expérimentale d’un amortisseur thermique composite MCP-NTC." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI100/document.

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L’amortisseur thermique étudié dans le cadre de cette thèse a pour objectif de limiter les pics de température des composants électroniques fonctionnant en régime transitoire au moyen d’une structure composite consistant en un réseau de nanotubes de carbone (NTC) rempli de matériau à changement de phase (MCP) solide-liquide, le tout étant contenu dans un boîtier en silicium (Si). Ce système passif vise à augmenter l’inertie thermique volumique du composant grâce à la chaleur latente du MCP tout en maintenant une bonne conductance thermique grâce aux NTC. Un dispositif expérimental polyvalent a été développé spécifiquement pour caractériser les différentes générations d’échantillons fabriqués par les partenaires du projet THERMA3D. L’excitation thermique de l’échantillon est réalisée au moyen d’un laser en face amont et la réponse thermique est mesurée par caméra infrarouge simultanément sur les faces amont et aval. L’application d’une peinture sélectionnée sur l’échantillon permet d’accéder à sa température après un étalonnage dédié. Des méthodes d’estimation de paramètres ont été développées pour quantifier les deux caractéristiques essentielles de l’amortisseur thermique que sont sa capacité de stockage thermique et sa résistance thermique. Les sensibilités de la résistance thermique aux caractéristiques de la connexion Si/NTC et à la longueur des NTC ont été étudiées et les résistances thermiques d’interface Si/NTC ont été identifiées comme dominantes au sein du système. Des essais de cyclage thermique ont permis d’évaluer la fiabilité de l’ensemble de manière accélérée. Le comportement du MCP et la qualité du matériau de scellement ont été analysés par voie optique. Par ailleurs, la plus élevée des deux résistances thermiques d’interface Si/NTC a été localisée grâce à la visualisation infrarouge du réseau de NTC à travers le silicium semi-transparent. Enfin, une méthode de contrôle non destructif de la qualité de l’interface Si/NTC a été développée pour les amortisseurs thermiques de dernière génération
The purpose of the studied thermal damper is to smooth the temperature peaks of transient electronic components via a composite structure consisting of an array of carbon nanotubes (CNT) filled with solid-liquid phase change material (PCM), the whole being embedded in a silicon (Si) casing. This passive system is intended to increase the thermal inertia per unit of volume of the electronic component thanks to the latent heat of the PCM while maintaining a high thermal conductance thanks to the CNT. A versatile test bench was specifically developed in order to characterize the different generations of samples fabricated by the partners of the THERMA3D project. The thermal excitation of the front side of the sample is generated by a laser and the thermal response is measured simultaneously on the front and back sides by an infrared camera. A selected paint can be deposited on the sample in order to access its temperature by means of a dedicated calibration. Parameter estimation methods were developed in order to quantify both main characteristics of the thermal damper: its heat storage capacity and its thermal resistance. The sensitivities of the thermal resistance to the features of the Si/CNT connection and to the length of the CNT were studied and it was found out that the interfacial thermal resistances Si/CNT are dominant in the system. Thermal cycling tests enabled to assess the reliability of the thermal damper in an accelerated manner. The behavior of the PCM and the quality of the sealing material were optically analyzed. Besides, the infrared visualization of the CNT array through the semi-transparent silicon enabled to identify the highest of both Si/CNT interfacial thermal resistances. Finally, a non-destructive testing method for the evaluation of the quality of Si/CNT interfaces was developed for the latest generation of thermal dampers
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Lin, JiaCheng, and HaoRan Teng. "Influence of Nucleation Techniques on the Degree of Supercooling and Duration of Crystallization for Sugar Alcohol as Phase Change Material : Investigation on erythritol-based additiveenhanced Composites." Thesis, KTH, Energiteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-257758.

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Utilizing Phase Change Materials (PCM) for Latent Thermal Energy Storage (LTES) applications have previously been extensively researched as a measure to reduce greenhouse gas emissions from energy consumption. In order to make use of the waste heat from industrial processes for LTES purposes, a new demand emerged for PCMs capable of phase change in mid-temperature ranges of 100 °C - 200 °C. This higher temperature requirement made most of the previously studied material inapplicable as they had much lower melting and solidification temperatures. With this in mind, a new generation of PCMs consisting of Sugar Alcohols (SA) has been proposed. Erythritol is seen as an especially promising SA with good thermophysical properties for LTES purposes. However, it has been shown to suffer from severe supercooling, which makes it unreliable in real applications. To eradicate this issue, two additives, Graphene Oxide (GO) and Polyvinylpyrrolidone (PVP) at varying mass fractions were mixed with pure erythritol to form a composite which was studied using the Temperature-history (T-history) method to determine its effectiveness in reducing supercooling. Results show that at its most effective mass fraction, GO reduces supercooling by 28 o C and a 31 o C reduction is seen by the addition of PVP. The impacts on the duration of crystallization was also documented and analyzed using the same method. It was observed that the duration of crystallization was increased with increasing mass fractions of the additives. Other important properties of the composites were also studied in order to determine the overall feasibility for industrial applications. It includes analysis of the storage capacity through latent heat, changes in viscosity along with impacts on thermal diffusivity of the composites.
Att använda fasändringsmaterial (PCM) för termisk energilagring i form av latent värme (LTES) har tidigare extensivt forskats och undersökts som en lösning för att minska utsläppen av växthusgaser från energiförbrukning. För att utnyttja spillvärme från industriella processer för LTES-ändamål uppstod en efterfrågan på PCM som ändrar fas i temperaturer mellan 100 °C - 200 °C. Detta krav på högre temperatur gjorde att de flesta av de tidigare aktuella materialen inte kunde tillämpas eftersom de hade mycket lägre smält- och kristalliseringstemperaturer. Med detta i åtanke har en ny generation av PCM bestående av sockeralkoholer (SA) föreslagits. Erytritol ses som ett särskilt lovande SA med goda egenskaper för LTES-ändamål. Den har dock visat sig drabbas av svår underkylning, vilket gör den opålitligt i verkliga tillämpningar. För att utrota detta problem blandades två tillsatser, Graphene Oxide (GO) och Polyvinylpyrrolidone (PVP) vid olika massfraktioner med ren erytritol för att bilda en komposit som studerades med metoden Temperature-history (T-history) för att bestämma dess effektivitet på att minska underkylningen. Resultaten visar att GO på sin mest effektiva massfraktion minskar underkylningen med 28 o C och tillsats av PVP lyckats minska den med som mest 31 o C. Påverkningarna på varaktighet av kristallisering dokumenterades och analyserades med samma metod. Det var observerad att varaktigheten av kristallisering ökades med ökande massfraktioner av tillsatserna. Även andra viktiga egenskaper hos kompositerna studerades för att avgöra rimligheten att använda dessa för industriella tillämpningar. Det inkluderar analys av lagringskapaciteten genom latent värme, förändringar i viskositet tillsammans med påverkan på kompositernas termiska diffusivitet.
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Books on the topic "Composite phase change material"

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Nechaev, Vladimir, Andrey Shuba, Stanislav Gridnev, and Vitaliy Topolov. Dimensional effects in phase transitions and physical properties of ferroics. ru: INFRA-M Academic Publishing LLC., 2022. http://dx.doi.org/10.12737/1898400.

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The monograph presents mathematical methods and a set of mathematical models describing, within the framework of phenomenological theory, phase transitions in 0D-. 1D-, 2D-, 3D-dimensional ferroelectrics, ferroelastics, ferromagnets and their static and dynamic physical properties near the phase transition point. The influence of the parameters characterizing the ferroic sample and its interaction with the environment on the features of the phase transition, phase transition temperature shift, heat capacity, generalized susceptibilities is analyzed. Mathematical models of multilayer thin-film structures and composite materials, where one of the components is a ferroic nanoparticle, are considered. In general, modern ideas about dimensional effects in ferroelectrics, ferroelastics, ferromagnets and mechanisms of purposeful influence on their properties are sufficiently fully covered. It is intended for researchers, students and postgraduates of physical specialties of universities interested in fundamental problems of formation of physical properties of low-dimensional materials. Research engineers, developers of new materials can use the presented material as a scientific and methodological basis to support the development of optimal solutions for their creation.
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Balaji, C., and Rajesh Baby. Thermal Management of Electronics, Volume II: Phase Change Material-Based Composite Heat Sinks--An Experimental Approach. Momentum Press, 2019.

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Balaji, C., and Rajesh Baby. Thermal Management of Electronics, Volume I: Phase Change Material-Based Composite Heat Sinks--An Experimental Approach. Momentum Press, 2019.

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Balaji, C., and Rajesh Baby. Thermal Management of Electronics, Volume I: Phase Change Material-Based Composite Heat Sinks-An Experimental Approach. Momentum Press, 2019.

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Balaji, C., and Srikanth Rangarajan. Phase Change Material Based Heat Sinks. Taylor & Francis Group, 2019.

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Balaji, C., and Srikanth Rangarajan. Phase Change Material-Based Heat Sinks: A Multi-Objective Perspective. Taylor & Francis Group, 2019.

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Balaji, C., and Srikanth Rangarajan. Phase Change Material-Based Heat Sinks: A Multi-Objective Perspective. Taylor & Francis Group, 2019.

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Balaji, C., and Srikanth Rangarajan. Phase Change Material-Based Heat Sinks: A Multi-Objective Perspective. Taylor & Francis Group, 2019.

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Phase Change Material Based Heat Sinks: A Multi-Objective Perspective. Taylor & Francis Group, 2019.

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Flashman, Richard S. Energy storage using a phase change material in a domestic dwelling. 1999.

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Book chapters on the topic "Composite phase change material"

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Kannan, K. Gopi, R. Kamatchi, and D. Dsilva Winfred Rufuss. "Potential Applications of Nano-Enhanced Phase Change Material Composites." In Composite and Composite Coatings, 233–42. New York: CRC Press, 2022. http://dx.doi.org/10.1201/9781003109723-13.

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Das, P., R. Kundu, S. P. Kar, and R. K. Sarangi. "Fabrication of Composite Phase Change Material: A Critical Review." In Lecture Notes in Mechanical Engineering, 97–106. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8341-1_8.

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Mishra, Durgesh Kumar, Sumit Bhowmik, and Krishna Murari Pandey. "Experimental Investigations of Beeswax Based Composite Phase Change Material." In Lecture Notes in Mechanical Engineering, 891–99. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-7711-6_88.

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Chavan, Santosh, Veershetty Gumtapure, and D. Arumuga Perumal. "Numerical Analysis of Composite Phase Change Material in a Square Enclosure." In Advances in Energy Research, Vol. 1, 359–70. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2666-4_35.

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Harikrishnan, S., and A. D. Dhass. "Composite PCMs for Thermal Energy Storage System." In Thermal Transport Characteristics of Phase Change Materials and Nanofluids, 92–118. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003163633-7.

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Boutaous, M'hamed, Matthieu Zinet, Nicolas Boyard, and Jean-Luc Bailleul. "Phase Change Kinetics within Process Conditions and Coupling with Heat Transfer." In Heat Transfer in Polymer Composite Materials, 121–55. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119116288.ch4.

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Samad, Yarjan Abdul, Yuanqing Li, Khalifa Al-Tamimi, Rawdha Al Marar, Saeed M. Alhassan, and Kin Liao. "Voltage and Photo Driven Energy Storage in Graphene Based Phase Change Composite Material." In ICREGA’14 - Renewable Energy: Generation and Applications, 633–42. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-05708-8_51.

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Liu, Jicheng, Yuanbo Zhang, Zijian Su, Bingbing Liu, Manman Lu, Tao Jiang, and Guanghui Li. "Preparation and Characterization of NaNO3/BFS Composite Phase Change Materials." In The Minerals, Metals & Materials Series, 85–94. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72484-3_9.

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Patel, Jay, and Rajesh Patel. "An Overview on the Prominence of Phase Change Material Based Battery Cooling and Role of Novel Composite Phase Change Material in Future Battery Thermal Management System." In Electric Vehicles, 119–35. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-9251-5_7.

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Liu, Xueting, Hao Bai, Yuanyuan Wang, Kang Zhou, and Hong Li. "Preparation of Silica Encapsulated Stearic Acid as Composite Phase Change Material via Sol-gel Process." In Energy Technology 2014, 31–38. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118888735.ch4.

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Conference papers on the topic "Composite phase change material"

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Hoe, Alison, Alexandra Easley, Michael Deckard, Jonathan Felts, and Patrick J. Shamberger. "Forward Selection Methodology for Phase Change Material Composite Optimization." In 2020 19th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm). IEEE, 2020. http://dx.doi.org/10.1109/itherm45881.2020.9190188.

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Su, Che-Fu, Xinrui Xiang, Hamed Esmaeilzadeh, Jirui Wang, Edward Fratto, Majid Charmchi, Zhiyong Gu, and Hongwei Sun. "A New Composite Phase Change Material for Thermal Energy Storage." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-10457.

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Abstract Enhancing the thermal conductivity of phase change materials (PCMs) is attracting attention for renewable energy applications such as solar, geothermal and wind energy. The use of energy storage can significantly improve the efficiency of renewable energy systems due to their intermittent nature. Latent heat thermal energy storage is a particularly attractive technique due to its high capacity can store energy at near constant temperature corresponding to the phase transition temperature of the PCMs. The present work aims to overcome this undesirable property of low thermal conductivity by manipulating metal fillers including nickel (Ni) nanoparticles/nanowires within the paraffin wax to improve its thermal property. In present work, a finite element method (FEM) was developed to obtain a fundamental understanding of the behavior of the Ni particles/wires under a uniform magnetic field by predefined magnetic pads. In the model, the Navier-Stokes equations were introduced as governing equations for the fluid field and the magnetic field was simulated by Maxwell’s equations. Then the motion of single Ni wire was modeled and the translation and rotational movements of the wire was studied in this paper.
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Darkwa, Jo. "Laminated Composite High Conductivity Phase Change Material (PCM) Drywall System." In 6th International Energy Conversion Engineering Conference (IECEC). Reston, Virigina: American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-5627.

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Ling, Ziye, Wenbo Zhang, Lei Shi, Zheng Guo Zhang, Xiaoming Fang, and Xuenong Gao. "THERMOPHSICAL PROPERTIES OF SHAPESTABILIZED MgCl2*6H2O/C3N4 COMPOSITE PHASE CHANGE MATERIAL." In International Heat Transfer Conference 16. Connecticut: Begellhouse, 2018. http://dx.doi.org/10.1615/ihtc16.tpm.022613.

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Darkwa, Jo, and Oliver Su. "Investigation into Compacted Composite Micro-encapsulated Phase Change Energy Storage Material." In 10th International Energy Conversion Engineering Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-4190.

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Shen, Shile, Shujuan Tan, Guoyue Xu, and Tengchao Guo. "The thermal properties of Erythritol/Adipic acid composite phase change material." In 2017 2nd International Conference on Materials Science, Machinery and Energy Engineering (MSMEE 2017). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/msmee-17.2017.231.

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Kee, Shin Yiing, Yamuna Munusamy, Kok Seng Ong, Swee Yong Chee, and Shimalaa Sanmuggam. "Thermal performance study of form-stable composite phase change material with polyacrylic." In GREEN AND SUSTAINABLE TECHNOLOGY: 2nd International Symposium (ISGST2017). Author(s), 2017. http://dx.doi.org/10.1063/1.4979379.

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Tamraparni, Achutha, Alison Hoe, Michael Deckard, Chen Zhang, Alaa Elwany, Patrick J. Shamberger, and Jonathan R. Felts. "Experimental Validation of Composite Phase Change Material Optimized for Thermal Energy Storage." In 2021 20th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (iTherm). IEEE, 2021. http://dx.doi.org/10.1109/itherm51669.2021.9503204.

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Darkwa, K. "Modelling of a Composite Quasi-Isotropic Laminated PCM (Phase Change Material) System." In 4th International Energy Conversion Engineering Conference and Exhibit (IECEC). Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-4172.

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Su, Junwei, Xiao Liu, Iman Mirzaee, Fan Gao, Majid Charmchi, Zhiyong Gu, and Hongwei Sun. "Magnetically Assembling Nanoscale Metal Network Into Phase Change Material." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39179.

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A high throughput manufacturing process to magnetically assembling nanowire (NW) network into paraffin was developed for enhancing conductivity in phase change materials (PCMs) used in energy storage applications. The prefabricated nickel nanowires were dispersed in melted paraffin followed by magnetic alignment under a strong magnetic field. Measuring electrical conductivity of the nanocomposites, as well as observing cross-section of the sample slice under an optical microscope characterized the alignment of nanowires. As a comparison, nickel particles (NPs) based paraffin nanocomposites were also fabricated and its electrical conductivity with and without applied magnetic field were measured. The effects of aspect ratio of fillers (particles and nanowires) and volume concentration on percolation threshold were studied both experimentally and theoretically. It was found that the nanowire based paraffin nanocomposite has much lower percolation threshold compared to that of particle based paraffin composite. Furthermore, the alignment of particles and nanowires under magnetic field significantly reduce the threshold of percolation. This work provides solid foundation for the development of a manufacturing technology for high thermal conductivity phase change materials (PCM) for thermal energy storage applications.
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Reports on the topic "Composite phase change material"

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Spanner, G. E., and G. L. Wilfert. Potential industrial applications for composite phase-change materials as thermal energy storage media. Office of Scientific and Technical Information (OSTI), July 1989. http://dx.doi.org/10.2172/5861369.

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Majidzadeh, Kamran, Behzad Vedaie, and George J. Ilves. Composite Material Tester. Phase 1. Fort Belvoir, VA: Defense Technical Information Center, September 1988. http://dx.doi.org/10.21236/adb127562.

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Abhari, Ramin. Low-Cost Phase Change Material for Building Envelopes. Office of Scientific and Technical Information (OSTI), August 2015. http://dx.doi.org/10.2172/1208635.

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Graves, Ron, T. Stovall, K. Weaver, K. Wilkes, and S. Roy. A Phase-Change Composite for Use in Building Envelopes. Office of Scientific and Technical Information (OSTI), June 1992. http://dx.doi.org/10.2172/1149264.

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Graves, R. S., T. K. Sovall, F. J. Weaver, K. E. Wilkes, and S. Roy. A Phase-Change Composite for Use in Building Envelopes. Office of Scientific and Technical Information (OSTI), June 1995. http://dx.doi.org/10.2172/770383.

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Craig, Timothy D., Edward I. Wolfe, and Mingyu Wang. Electric Phase Change Material Assisted Thermal Heating System (ePATHS). Office of Scientific and Technical Information (OSTI), December 2017. http://dx.doi.org/10.2172/1467444.

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Chio, Y. I., E. Choi, and H. G. Lorsch. Thermal analysis of n-alkane phase change material mixtures. Office of Scientific and Technical Information (OSTI), March 1991. http://dx.doi.org/10.2172/6619165.

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Davis, Stephen C. Novel Elastomeric Closed Cell Foam - Nonwoven Fabric Composite Material (Phase III). Fort Belvoir, VA: Defense Technical Information Center, October 2008. http://dx.doi.org/10.21236/ada513665.

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Holmquist, Timothy J., Gordon R. Johnson, and Douglas W. Templeton. Effect of Material Phase Change on Penetration and Shock Waves. Fort Belvoir, VA: Defense Technical Information Center, January 2003. http://dx.doi.org/10.21236/ada457966.

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Biswas, Kaushik, Phillip W. Childs, and Jerald Allen Atchley. Field Testing of Low-Cost Bio-Based Phase Change Material. Office of Scientific and Technical Information (OSTI), March 2013. http://dx.doi.org/10.2172/1072152.

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