scholarly journals Phase Change Materials and Their Benefits in ETICS

2020 ◽  
Vol 10 (23) ◽  
pp. 8549
Author(s):  
Lubomír Sokola ◽  
Nikol Žižková ◽  
Vítězslav Novák ◽  
Aleš Jakubík
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Composite System ◽  
Heat Storage ◽  
Reference Sample ◽  
Sample Surface ◽  
Dark Color ◽  
Condense Water ◽  
Positive Effect ◽  
Storage Properties

Phase change materials (PCMs) are materials with the ability of absorption of latent heat based on a phase change. PCMs are able to store and release a large amount of energy at certain temperatures melting or freezing. The aim of the research is to verify whether this phenomenon (material) can be used within an external thermal insulation composite system (ETICS). This is particularly the usage of PCMs in the base coat. The research is focused on two main areas. The first area concerns the water condensation on the surface of the ETICS and the associated phenomenon of algae attack. The second area concerns the warming of ETICSs with the use of dark color shades. Practical experiments showed a positive effect of PCMs on the heat-storage properties of the ETICS base coat. It was also experimentally verified that the PCM sample did not condense water vapor on the sample surface compared to the reference sample.

Heat storage properties of organic phase-change materials confined in the nanospace of mesoporous SBA-15 and CMK-3

2014 ◽  
Vol 16 (12) ◽  
pp. 5495-5498 ◽  
Author(s):  
Tomosuke Kadoono ◽  
Masaru Ogura
Keyword(s):  
Phase Change ◽  
Organic Phase ◽  
Mesoporous Carbon ◽  
Phase Change Materials ◽  
Heat Storage ◽  
Storage Properties

A mesoporous carbon CMK-3 composite with phase-change materials (PCMs) showed unique properties for heat storage/release.

Selection of Phase Change Materials for Latent Heat Storage

2017 ◽  
Vol 13 (1) ◽  
Author(s):  
J. Martínez-Gómez ◽  
E. Urresta ◽  
D. Gaona ◽  
G. Guerrón
Keyword(s):  
Phase Change ◽  
Latent Heat ◽  
Phase Change Materials ◽  
Heat Storage ◽  
Latent Heat Storage ◽  
Toma De Decisiones ◽  
Selection Of

Esta investigación tiene como objetivo seleccionar un material de cambio de fase (PCM) que cumplen mejor la solución del almacenamiento de energía térmica entre 200-400 ° C y reducir el costo de producción. El uso de métodos multicriterios de toma de decisiones (MCMD) para la evaluación fueron proporcionales implementados como COPRAS-G, TOPSIS y VIKOR. La ponderación de los criterios se realizó por el método AHP (proceso analítico jerárquico) y los métodos de entropía. La correlación de los resultados entre los tres métodos de clasificación ha sido desarrollada por el coeficiente de correlación de Spearman. Los resultados ilustran el mejor y la segundo mejor opción para los tres MCDM fueron NaOH y KNO3. Además, tenía valores de correlación de Spearman entre los métodos excede de 0.714.

Sunlight-Activated Phase Change Materials for Controlled Heat Storage and Triggered Release

2021 ◽  
Author(s):  
Yuran Shi ◽  
Mihael Gerkman ◽  
Qianfeng Qiu ◽  
Shuren Zhang ◽  
Grace G. D. Han
Keyword(s):  
Phase Transition ◽  
Solar Radiation ◽  
Phase Change ◽  
Latent Heat ◽  
Photon Energy ◽  
Organic Phase ◽  
Phase Change Materials ◽  
Heat Storage ◽  
Triggered Release

We report the design of photo-responsive organic phase change materials that can absorb filtered solar radiation to store both latent heat and photon energy via simultaneous phase transition and photo-isomerization....

scholarly journals A Review of Composite Phase Change Materials Based on Porous Silica Nanomaterials for Latent Heat Storage Applications

Molecules ◽  
2021 ◽  
Vol 26 (1) ◽  
pp. 241
Author(s):  
Raul-Augustin Mitran ◽  
Simona Ioniţǎ ◽  
Daniel Lincu ◽  
Daniela Berger ◽  
Cristian Matei
Keyword(s):  
Phase Change ◽  
Latent Heat ◽  
Phase Change Materials ◽  
Heat Storage ◽  
Porous Silica ◽  
Lessons Learned ◽  
High Porosity ◽  
Storage Materials ◽  
Silica Nanomaterials ◽  
Heat Storage Materials

Phase change materials (PCMs) can store thermal energy as latent heat through phase transitions. PCMs using the solid-liquid phase transition offer high 100–300 J g−1 enthalpy at constant temperature. However, pure compounds suffer from leakage, incongruent melting and crystallization, phase separation, and supercooling, which limit their heat storage capacity and reliability during multiple heating-cooling cycles. An appropriate approach to mitigating these drawbacks is the construction of composites as shape-stabilized phase change materials which retain their macroscopic solid shape even at temperatures above the melting point of the active heat storage compound. Shape-stabilized materials can be obtained by PCMs impregnation into porous matrices. Porous silica nanomaterials are promising matrices due to their high porosity and adsorption capacity, chemical and thermal stability and possibility of changing their structure through chemical synthesis. This review offers a first in-depth look at the various methods for obtaining composite PCMs using porous silica nanomaterials, their properties, and applications. The synthesis and properties of porous silica composites are presented based on the main classes of compounds which can act as heat storage materials (paraffins, fatty acids, polymers, small organic molecules, hydrated salts, molten salts and metals). The physico-chemical phenomena arising from the nanoconfinement of phase change materials into the silica pores are discussed from both theoretical and practical standpoints. The lessons learned so far in designing efficient composite PCMs using porous silica matrices are presented, as well as the future perspectives on improving the heat storage materials.

scholarly journals Heat storage performance analysis and parameter design for encapsulated phase change materials

2018 ◽  
Vol 157 ◽  
pp. 619-630 ◽  
Author(s):  
Qinghua Yu ◽  
Alessandro Romagnoli ◽  
Bushra Al-Duri ◽  
Danmei Xie ◽  
Yulong Ding ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Phase Change ◽  
Phase Change Materials ◽  
Heat Storage ◽  
Parameter Design ◽  
Storage Performance
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