Gypsum based composite materials with micro-encapsulated PCM: Experimental correlations for thermal properties estimation on the basis of the composition

Toppi, Tommaso; Mazzarella, Livio

doi:10.1016/j.enbuild.2012.11.009

Cited by 66 publications

(25 citation statements)

References 20 publications

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“…MPCM was also added to sandwich panels [188] to increase their thermal inertia and to reduce the energy demand of the final buildings [186]. To manufacture the sandwich panel with microencapsulated PCM three different methods were tested.…”

Section: Mpcm Applicationsmentioning

confidence: 99%

Types, methods, techniques, and applications for microencapsulated phase change materials (MPCM): A review

Giró-Paloma

Martínez

Cabeza

et al. 2016

Renewable and Sustainable Energy Reviews

449

151

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Phase Change Materials (PCM) can be employed in many fields because of their capacity to absorb and release energy when it is necessary. Nowadays, the number of studies about these materials is increasing because of their benefits in energy systems. This paper reviews the previous researches and developments on microencapsulated phase change materials (MPCM) in thermal energy storage (TES) systems, focusing on the different methods of encapsulations and also the different applications of these materials. This review aims to be a useful guide for the researchers in this area, because it explains the different types of phase change core materials, the different shells, the methods to microencapsulate these PCM, the most used techniques to characterize these microencapsulated phase change materials, and a revision of the main applications.Storage these type of materials to store energy, and release it when the systems needed, for example, the chilly bins studied by Oró et al. [15] to enhance the thermal performance. Also, it is possible to use phase change materials in cold storage needs, as Oró et al. [16] evaluate, studying the compatibility of PCM with metallic materials, but a common problem in PCM cooling applications is the subcooling, which happens when a material is cooled and the crystallization does not start below the freezing temperature [17].Another very significant application of PCM is the one in the building sector [18], in passive applications like floors [19], walls [20-23] (for example conventional and alveolar brick [24]), and ceiling studies. There is another case, which is in active systems in domestic applications as heating [25] and hot water [26][27][28][29].Since PCM undergo the solid-liquid states, they need to be encapsulated for their inclusion in the final system. Due to the leakage in the liquid state when mixing the PCM with other materials, such as building construction materials [30], and because of the corrosion and the thermal reliability, the possibility to make a polymeric container for PCM, in small vessels, using the encapsulation technology and producing capsules calling them encapsulated Phase Change Material for energy storage [31] has been investigated. Encapsulation techniques vary from macroencapsulation in slabs, panels, etc. to microencapsulation [32,33]. When the sizes of these capsules are micrometers, these are called Microencapsulated Phase Change Material (MPCM), which consisted on a polymeric shell and a core made of the storage material. The microencapsulation is a process of enclosing micron-sized particles of solids or droplets of liquids or gases in an inert shell, which in turn isolates and protects them from the external environment. The captivity of waxes into the microcapsules allows to increase the heat transfer[3] and to control de volume changes when the phase change is happening. Microencapsulation methodology for PCM still needs to be improved because the microcapsules can break easily when they collide with other microcapsules when they are used in...

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Section: Mpcm Applicationsmentioning

confidence: 99%

Types, methods, techniques, and applications for microencapsulated phase change materials (MPCM): A review

Giró-Paloma

Martínez

Cabeza

et al. 2016

Renewable and Sustainable Energy Reviews

449

151

View full text Add to dashboard Cite

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“…It should be to point out that the PCM micro-encapsulation technology is increasingly used because of its ability to avoid leakage and to prevent forthright contact between the PCM and the building material. Although much researches have been conducted in recent years on such a topic [7][8][9][10][11], works on PCM incorporation in building bricks have been seldom addressed, yet widely used in mediterranean countries. Wherefore, this study aims to demonstrate the PCM integration concept in these typical constructions.…”

Section: Introductionmentioning

confidence: 99%

Numerical assessment of brick walls` use incorporating a phase change material towards thermal performance in buildings during a passive cooling strategy

Younsi

Naji

2020

THERM SCI

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Original scientific paper https://doi.org/10.2298/TSCI180302207YThe integration of new building materials incorporating phase change material (PCM) into the building envelope leads to an increase of the heat storage capacity, which may have an influence on minimizing the cooling demand and heating of the building. This work addresses a thermal performance enhancement of brick walls with incorporated PCM. The improvement has been assessed through a numerical approach in dealing with a 1-D transient conduction problem with phase change, while leaning on experimental results from a transient guarded hot plates method. The simulations have been fulfilled using a hybrid method combining both the finite volume method and an enthalpy porosity technique. The results of this combined approach are in good agreement. In the light of the findings obtained, it appears that PCM incorporation into a brick masonry can both reduce peak temperatures up to 3 °C and smooth out daily fluctuations. Thereby, the evaluation achieved can turns out useful in developing brick walls with an incorporated PCM for passive cooling, thus improving buildings thermal performance.

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“…Since micro‐PCMs show excellent thermal energy storage properties, various approaches to micro‐PCM applications in building envelopes have been investigated . For instance, not only can they be mixed with concrete, but micro‐PCMs can also be incorporated with other materials, such as polyurethane foams or gypsum, to enhance the thermal insulation property of these wallboards . Biswas et al .…”

Section: Introductionmentioning

confidence: 99%

“…[27][28][29][30][31][32] For instance, not only can they be mixed with concrete, [27][28][29] but micro-PCMs can also be incorporated with other materials, such as polyurethane foams or gypsum, to enhance the thermal insulation property of these wallboards. 33,34 Biswas et al 35 prepared 1.3-cm-thick nano-PCM wallboard containing 20% by weight nano-PCM homogeneously dispersed in gypsum board. The nominal latent heats and the phase-change onset temperatures of melting were 26.9 J/g and 21.1 C, respectively.…”

Section: Introductionmentioning

confidence: 99%

Investigations on thermal properties of microencapsulated phase‐change materials with different acrylate‐based copolymer shells as thermal insulation materials

Yan

Xie

Wang

2019

J of Applied Polymer Sci

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A series of microencapsulated phase‐change materials (micro‐PCMs) with binary cores and acrylate‐based copolymer shells were prepared. The micro‐PCMs contained octadecane and butyl stearate as binary‐core materials. Allyl methacrylate, ethylene glycol dimethacrylate, 1,4‐butanediol diacrylate (BDDA), and 1,6‐hexanediol dimethacrylate were respectively introduced to copolymerize with divinylbenzene (DVB) to form different microcapsule shells. In this work, the influence of the types of core and shell materials and core–shell weight ratios on the thermal properties of micro‐PCMs was studied. The chemical structures, morphologies, thermal properties, and thermal insulation properties of the wallboards were all tested and discussed. Scanning electron microscope photographs show that these micro‐PCMs have relatively spherical profiles and compact surfaces with diameters ranging from 10 to 80 μm. Differential scanning calorimetry results indicated that their microencapsulation efficiency ranged from 48 wt % to 80 wt %. A thermogravimetric analysis demonstrated that these micro‐PCMs can ensure their thermal stability below 210°C. Finally, a thermal insulation wallboard fabricated with synthesized P(BDDA‐co‐DVB) micro‐PCMs showed excellent thermal energy storage performance, keeping the temperature fluctuation within 2.5°C. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47777.

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Gypsum based composite materials with micro-encapsulated PCM: Experimental correlations for thermal properties estimation on the basis of the composition

Cited by 66 publications

References 20 publications

Types, methods, techniques, and applications for microencapsulated phase change materials (MPCM): A review

Types, methods, techniques, and applications for microencapsulated phase change materials (MPCM): A review

Numerical assessment of brick walls` use incorporating a phase change material towards thermal performance in buildings during a passive cooling strategy

Investigations on thermal properties of microencapsulated phase‐change materials with different acrylate‐based copolymer shells as thermal insulation materials

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