Experimental investigation of thermal characteristics of a mortar with or without a micro-encapsulated phase change material

Joulin, Annabelle; Zalewski, Laurent; Lassue, Stéphane; Naji, Hassane

doi:10.1016/j.applthermaleng.2014.01.027

Cited by 116 publications

(41 citation statements)

References 38 publications

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“…This is possibly due to low microcapsule concentrations, which are too small to significantly affect the values of the specific heat capacity of the concrete samples. This observation is in good agreement with Joulin et al [17]. Interestingly, the specific heat capacity is not changed when the concentration of MPCM is increased from 0 to 3.2 and 2.7 wt.% for PCC and GPC, respectively.…”

Section: Thermal Propertiessupporting

confidence: 92%

“…Interestingly, the specific heat capacity is not changed when the concentration of MPCM is increased from 0 to 3.2 and 2.7 wt.% for PCC and GPC, respectively. This observation is different from Joulin et al [17], who found that the specific heat capacity of MPCM-mortar increased with microcapsule concentration due to the higher specific heat capacity of microcapsule compared to mortar. The smaller microcapsule concentrations applied compared to that of Jourlin's (14 wt.%) is probably reason for this difference.…”

Section: Thermal Propertiesmentioning

confidence: 62%

“…Portland cement concrete (PCC) is the most utilized concrete for applications utilizing microencapsulated phase change materials [15][16][17]. PCC has several advantageous properties, such as high thermal conductivity, high specific heat capacity, high density, and high mechanical strength.…”

Section: Introductionmentioning

confidence: 99%

“…This provides not only an extremely high heat transfer area, but also prevents the leakage of PCM and interactions with the building structure. Microencapsulated phase change materials (MPCM) are therefore able to support PCM for utilization as thermal storage materials in building applications and energy storage systems [14][15][16][17][18][19]. Concrete-based materials with high thermal properties and high mechanical strength are potential candidates for MPCM integration.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Microencapsulated phase change materials for enhancing the thermal performance of Portland cement concrete and geopolymer concrete for passive building applications

Cao

Pilehvar

Salas-Bringas

et al. 2017

Energy Conversion and Management

242

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a b s t r a c tConcretes with a high thermal energy storage capacity were fabricated by mixing microencapsulated phase change materials (MPCM) into Portland cement concrete (PCC) and geopolymer concrete (GPC). The effect of MPCM on thermal performance and compressive strength of PCC and GPC were investigated. It was found that the replacement of sand by MPCM resulted in lower thermal conductivity and higher thermal energy storage, while the specific heat capacity of concrete remained practically stable when the phase change material (PCM) was in the liquid or solid phase. Furthermore, the thermal conductivity of GPC as function of MPCM concentration was reduced at a higher rate than that of PCC. The power consumption needed to stabilize a simulated indoor temperature of 23°C was reduced after the addition of MPCM. GPC exhibited better energy saving properties than PCC at the same conditions. A significant loss in compressive strength was observed due to the addition of MPCM to concrete. However, the compressive strength still satisfies the mechanical European regulation (EN 206-1, compressive strength class C20/25) for concrete applications. Finally, MPCM-concrete provided a good thermal stability after subjecting the samples to 100 thermal cycles at high heating/cooling rates.

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Section: Thermal Propertiessupporting

confidence: 92%

Section: Thermal Propertiesmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microencapsulated phase change materials for enhancing the thermal performance of Portland cement concrete and geopolymer concrete for passive building applications

Cao

Pilehvar

Salas-Bringas

et al. 2017

Energy Conversion and Management

242

View full text Add to dashboard Cite

show abstract

“…More efficient energy usage in buildings with desirable heat capacity and better thermal insulation effects has attracted considerable attention in recent years. 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 .…”

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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Thermal properties of geopolymer composites containing microencapsulated phase change materials

et al. 2022

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The main objective of this paper is to investigate the possibility of using phase change materials (PCMs) as one of the components of a geopolymer and to determine the effect of PCMs addition on the thermal properties of the geopolymer composite obtained. This paper presents the results of geopolymers produced based on fly ash with the addition of microencapsulated PCMs. The geopolymer composites were prepared by adding 0%, 5%, 10%, and 15% PCM, and the curing process was carried out in two temperature ranges: 60°C and 75°C. A PCM with a melting point of 28°C (MicroCapsPCM28-slurry [Slovenia]) was used. The composites were subjected to thermal conductivity tests in three temperature ranges (0-20°C; 20-40°C; and 30-50°C). This was followed by specific heat and density tests. In addition, the morphology of the geopolymers was determined by scanning electron microscopy. The results showed that the addition of PCMs to the geopolymer materials significantly reduces their thermal conductivity index (compared to the reference sample). Furthermore, the addition of microencapsulated phase-change materials caused changes in the specific heat of the materials analyzed.

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Experimental investigation of thermal characteristics of a mortar with or without a micro-encapsulated phase change material

Cited by 116 publications

References 38 publications

Microencapsulated phase change materials for enhancing the thermal performance of Portland cement concrete and geopolymer concrete for passive building applications

Microencapsulated phase change materials for enhancing the thermal performance of Portland cement concrete and geopolymer concrete for passive building applications

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

Thermal properties of geopolymer composites containing microencapsulated phase change materials

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