A comprehensive review of recent advances in materials aspects of phase change materials in thermal energy storage

Elias, Charalambos; Stathopoulos, Vassilis

doi:10.1016/j.egypro.2019.02.101

Cited by 104 publications

(30 citation statements)

References 62 publications

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“…A comprehensive review of the convectional WHR technologies was introduced by Jouhara et al 2018, where various technologies were discussed, such as recuperators, regenerators, furnace regenerators and rotary regenerators or heat wheels, passive air preheaters, regenerative and recuperative burners, plate heat exchangers, economizers, as well as units of waste heat boilers and runaround coil (RAC). Among the available technologies, thermal energy storage (TES) (in particular when using phase change materials) offers the possibility of solving the problem of matching the discontinuous waste heat supply with the heat demand and achieving a better capacity factor (Miró et al 2016;Elias and Stathopoulos 2019). In addition to the convectional WHR approaches, new technologies have been proposed by Agathokleous et al (2019), including trilateral flash cycle, Joule-Brayton cycle working with supercritical carbon dioxide, flat heat pipes and condensing economizer for acidic effluents.…”

Section: Introductionmentioning

confidence: 99%

Estimating the waste heat recovery in the European Union Industry

Bianchi

Panayiotou

Aresti

et al. 2019

Energ. Ecol. Environ.

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Industrial processes are currently responsible for nearly 26% of European primary energy consumptions and are characterized by a multitude of energy losses. Among them, the ones that occur as heat streams rejected to the environment in the form of exhausts or effluents take place at different temperature levels. The reduction or recovery of such types of energy flows will undoubtedly contribute to the achievement of improved environmental performance as well as to reduce the overall manufacturing costs of goods. In this scenario, the current work aims at outlining the prospects of potential for industrial waste heat recovery in the European Union (EU) upon identification and quantification of primary energy consumptions among the major industrial sectors and their related waste streams and temperature levels. The paper introduces a new approach toward estimating the waste heat recovery in the European Union industry, using the Carnot efficiency in relation to the temperature levels of the processes involved. The assessment is carried out using EU statistical energy databases. The overall EU thermal energy waste is quantified at 920 TWh theoretical potential and 279 TWh Carnot potential.

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Section: Introductionmentioning

confidence: 99%

Estimating the waste heat recovery in the European Union Industry

Bianchi

Panayiotou

Aresti

et al. 2019

Energ. Ecol. Environ.

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“…A good PCM should be abundant, available, and cheap to be widely used in applications, such as building [7][8][9][10], food packaging [11], underfloor heating system [12], air conditioning systems [13], and textile [14]. The feasibility of using a particular PCM for a specific application is based on some desirable thermal, physical, kinetic, chemical, and economical properties of the PCM, and the selection criteria for the various PCMs was reported by Elias et al [15].…”

Section: Introductionmentioning

confidence: 99%

A Study of Manufacturing Processes of Composite Form-Stable Phase Change Materials Based on Ca(NO3)2–NaNO3 and Expanded Graphite

Ren¹,

Xu²,

Wang³

et al. 2020

Materials

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The fabrication of form-stable phase change materials (FS-PCMs) usually involves four manufacturing processes: mixing, immersion, stabilization, and sintering. In each process, the operation parameters could affect the performance of the fabricated PCM composite. To gain an efficient and low-cost method for large-scale production of the molten salts/expanded graphite (EG) composite FS-PCMs, the effects of different operating parameters were investigated, including the stirring speed, evaporation temperature, melt-impregnation, cold-pressing pressure, and sintering temperature on the densification, microstructure, and thermophysical properties of the composite FS-PCMs. It was found that the microstructure, the morphology and durability, and the thermophysical properties such as thermal conductivity and specific heat enthalpy depended highly on the operating parameters. The following optimal operating parameters of the Ca(NO3)2–NaNO3/EG composite FS-PCMs are suggested: the stirring speed of 20 rpm, the evaporation temperature of 98 °C, the melt-impregnation temperature of 280 °C, the cold-pressing pressure of 8 MPa, and the sintering temperature of 300 °C. The results of the present work can provide valuable insights for the large-scale production of the composite FS-PCMs.

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“…Utilization of heat energy using phase change materials (PCMs) is an economical and environment friendly approach 1 . Among the different PCMs, there is a long list of organic compounds which have been studied for latent heat thermal energy storage (LHTES) 2 , 3 .…”

Section: Introductionmentioning

confidence: 99%

Thermal energy storage and thermal conductivity properties of fatty acid/fatty acid-grafted-CNTs and fatty acid/CNTs as novel composite phase change materials

Al‐Ahmed

Sarı

Mazumder

et al. 2020

Sci Rep

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In recent year, fatty acids (FAs) are heavily studied for heat storage applications and they have shown promising advantages over other organic phase change materials (PCMs). Among the FAs; capric, palmitic and stearic acids are the most studied PCMs. Several researchers have investigated these FAs and tried to improve their thermal properties, mainly by adding different high conducting fillers, such as graphite, metal foams, CNTs, graphene etc. In most cases, these fillers improved the thermal conductivity and heat transfer property but reduce the heat storage capacity considerably. These composites also lose the mixing uniformity during the charging and discharging process. To overcome these issues, selected FAs were grafted on the functionalized CNT surfaces and used as conductive fillers to prepare FA based composite PCMs. This process significantly contributed to prevent the drastic reduction of the overall heat storage capacity and also showed better dispersion in both solid and liquid state. Thermal cycling test showed the variations in the thermal energy storage values of all composite PCMs, however, within the tolerable grade and they had appreciable phase change stability and good chemical stability even after 2,000 cycles.

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A comprehensive review of recent advances in materials aspects of phase change materials in thermal energy storage

Cited by 104 publications

References 62 publications

Estimating the waste heat recovery in the European Union Industry

Estimating the waste heat recovery in the European Union Industry

A Study of Manufacturing Processes of Composite Form-Stable Phase Change Materials Based on Ca(NO3)2–NaNO3 and Expanded Graphite

Thermal energy storage and thermal conductivity properties of fatty acid/fatty acid-grafted-CNTs and fatty acid/CNTs as novel composite phase change materials

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