Use of multi-layered PCM gypsums to improve fire response. Physical, thermal and mechanical characterization

Serrano, Susana; Barreneche, Camila; Navarro, Antònia; Ibarra, Laia Haurie; Fernández, A. Inés

doi:10.1016/j.enbuild.2016.05.056

Cited by 30 publications

(8 citation statements)

References 19 publications

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“…The results showed the following trend: the higher the mPCM content, the lower the AAC’s real density, as expected by applying the mixture law [25], due to the lower density of the mPCM. On the other hand, an increment of the porosity was also observed when adding mPCM to ceramic materials, as stated in preceding studies by Serrano et al [24]. Therefore, it should also be expected that a decrease in the bulk density of the AAC occurred.…”

Section: Resultssupporting

confidence: 73%

“…As expected, the higher the mPCM content, the lower the mechanical resistance. This is because of the polymeric nature of the mPCM and its low mechanical properties, as well as the increasing porosity as the mPCM amount is increased [24].…”

Section: Resultsmentioning

confidence: 99%

“…Based on previous studies, the minimum amount of mPCM to be included is 10 wt.%, at least [24]. Therefore, this is the minimum amount of mPCM to be added to the formulations in this study.…”

Section: Methodsmentioning

confidence: 99%

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Alkali-Activated Cements for TES Materials in Buildings’ Envelops Formulated With Glass Cullet Recycling Waste and Microencapsulated Phase Change Materials

et al. 2019

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Within the thermal energy storage field, one of the main challenges of this study is the development of new enhanced heat storage materials to be used in the building sector. The purpose of this study is the development of alkali-activated cements (AACs) with mechanical properties to store high amounts of heat. These AACs incorporate wastes from industrial glass process as well as microencapsulated phase change materials (mPCMs) to improve the thermal inertia of building walls, and accordingly respective energy savings. The research presented below consists of the exhaustive characterization of different AACs formulated from some waste generated during the proper management of municipal waste used as precursor. In this case study, AACs were formulated with the waste generated during the recycling of glass cullet, namely ceramic, stone, and porcelain (CSP), which is embedding a mPCM. The addition of mPCM was used as thermal energy storage (TES) material. The mechanical properties were also evaluated in order to test the feasibility of the use of the new formulated materials as a passive TES system. The results showed that the AAC obtained from CSP (precursors) mixed with mPCMs to obtain a thermal regulator material to be implemented in building walls was reached successfully. The material developed was resistant enough to perform as insulating panels. The formulated materials had high storage capacity depending on the PCM content. The durability of the mPCM shell was studied in contact with alkaline medium (NaOH 4 M) and no degradation was confirmed. Moreover, the higher the content of mPCM, the lower the mechanical properties expected, due to the porosity increments with mPCM incorporation in the formulations.

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Section: Resultssupporting

confidence: 73%

Section: Resultsmentioning

confidence: 99%

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Alkali-Activated Cements for TES Materials in Buildings’ Envelops Formulated With Glass Cullet Recycling Waste and Microencapsulated Phase Change Materials

et al. 2019

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“…Additionally, they are non-toxic, non-corrosive, and chemo-physically stable [4]. The weakest feature of paraffin is flammability [5] which limits the possibilities of their application in building interiors [6]. Simultaneously, the inner location of PCM layer is the most effective solution for stabilizing the indoor temperature [7,8].…”

Section: Introductionmentioning

confidence: 99%

Attenuation of Temperature Fluctuations on an External Surface of the Wall by a Phase Change Material-Activated Layer

Heim¹,

Wieprzkowicz²

2017

Applied Sciences

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Periodical changes of temperature on an external surface of building envelope, e.g., thermal stress or excessive heat gains, is often an undesirable phenomenon. The idea proposed and described in the following paper is to stabilize the external surface temperature in a period of significant heat gains by the originally developed, novel composite modified by phase change material (PCM) and applied as an external, thin finishing plaster layer. The PCM composite is made from porous, granulated perlite soaked with paraffin wax (T m = 25 • C) and macro-encapsulated by synthetic resin. The effect of temperature attenuation was estimated for two designated periods of timethe heat gains season (HGS) and the heat losses season (HLS). The attenuation coefficient (AC) was proposed as evaluation parameter of isothermal storage of heat gains determining the reduction of temperature fluctuations. The maximum registered temperature of an external surface for a standard insulation layer was around 20 K higher than for the case modified by PCM. The calculated values of AC were relatively constant during HGS and around two times lower for PCM case. The obtained results confirmed that the proposed modification of an external partition by equipped with additional PCM layer can be effectively used to minimize temperature variations and heat flux in the heat gains season.

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“…For the advantage of passively reducing the indoor temperature fluctuations, PCM has been widely studied to be incorporated within the building envelope, such as PCM wall [ 4 , 5 , 6 ], PCM wallboard [ 7 , 8 , 9 ] and PCM roof [ 10 , 11 , 12 ]. Although the combining patterns of PCMs with building envelopes are various, a key point in practical application is always the selection of appropriate PCM with high thermal property.…”

Section: Introductionmentioning

confidence: 99%

A Study on a Novel Phase Change Material Panel Based on Tetradecanol/Lauric Acid/Expanded Perlite/Aluminium Powder for Building Heat Storage

et al. 2016

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Phase change material (PCM) used in buildings can reduce the building energy consumption and indoor temperature fluctuation. A composite PCM has been fabricated by the binary eutectic mixture of tetradecanol (TD) and lauric acid (LA) absorbed into the expanded perlite (EP) using vacuum impregnation method, and its thermal conductivity was promoted by aluminium powder (AP) additive. Besides, the styrene-acrylic emulsion has been mixed with the composite PCM particles to form the protective film, so as to solve the problem of leakage. Thus, a novel PCM panel (PCMP) has been prepared using compression moulding forming method. The thermal property, microstructure characteristic, mechanical property, thermal conductivity, thermal reliability and leakage of the composite PCM have been investigated and analysed. Meanwhile, the thermal performance of the prepared PCMP was tested through PCMPs installed on the inside wall of a cell under outdoor climatic conditions. The composite PCM has a melting temperature of 24.9 °C, a freezing temperature of 25.2 °C, a melting latent heat of 78.2 J/g and a freezing latent heat of 81.3 J/g. The thermal conductivity test exposed that the thermal conductivity has been enhanced with the addition of AP and the latent heat has been decreased, but it still remains in a high level. The leakage test result has proven that liquid PCM leaking has been avoided by the surface film method. The thermal performance experiment has shown the significant function of PCMP about adjusting the indoor temperature and reducing the heats transferring between the wall inside and outside. In view of the thermal performance, mechanical property and thermal reliability results, it can be concluded that the prepared PCMP has a promising building application potential.

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Use of multi-layered PCM gypsums to improve fire response. Physical, thermal and mechanical characterization

Cited by 30 publications

References 19 publications

Alkali-Activated Cements for TES Materials in Buildings’ Envelops Formulated With Glass Cullet Recycling Waste and Microencapsulated Phase Change Materials

Alkali-Activated Cements for TES Materials in Buildings’ Envelops Formulated With Glass Cullet Recycling Waste and Microencapsulated Phase Change Materials

Attenuation of Temperature Fluctuations on an External Surface of the Wall by a Phase Change Material-Activated Layer

A Study on a Novel Phase Change Material Panel Based on Tetradecanol/Lauric Acid/Expanded Perlite/Aluminium Powder for Building Heat Storage

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