scholarly journals Numerical Thermal Characterization and Performance Metrics of Building Envelopes Containing Phase Change Materials for Energy-Efficient Buildings

2018 ◽  
Vol 10 (8) ◽  
pp. 2657 ◽  
Author(s):  
Mingli Li ◽  
Guoqing Gui ◽  
Zhibin Lin ◽  
Long Jiang ◽  
Hong Pan ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Storage ◽  
Phase Change ◽  
Phase Change Materials ◽  
Performance Metrics ◽  
Financial Burden ◽  
Building Energy ◽  
Design Parameters ◽  
Building Energy Efficiency ◽  
Building Envelopes

Residential and commercial buildings consume nearly 40 percent of total USA energy use and account for one-third of total greenhouse gas emissions. The challenges are how to effectively promote energy efficiency in buildings to respond to the high financial burden of energy consumption, while reducing pollution. Phase change materials (PCMs) have been used as passive energy storage for building systems. Along this vein, this study aims to numerically elucidate the design parameters of building envelopes strengthened by PCM layers, and unveil their impacts on building energy efficiency. Critical design variables, such as the thickness of the PCM layer, the latent heat of PCMs, or melting temperature of PCMs were selected for a parametric study, while performance metrics were used to assess building efficiency. Results revealed that PCM-enabled building walls exhibited different levels of improvement, in terms of reduction of peak temperature and temperature swings. Among the variables, the selection of the proper melting point for a PCM was identified as the most crucial parameter for determining building energy efficiency, while the heat of fusion was also observed as a critical property of PCM for building potential. Findings also demonstrated that the placement of the PCM near the interior wall surface could achieve higher efficiency, as compared to other cases. Results also showed that the thermal conductivity of PCM has a minimum contribution to energy storage capacity.

Application of Phase Change Materials for Building Energy Efficiency

2012 ◽  
Vol 174-177 ◽  
pp. 912-915
Author(s):  
Quan Ying Yan ◽  
Li Li Jin
Keyword(s):  
Energy Efficiency ◽  
Phase Change ◽  
Phase Change Materials ◽  
Building Energy ◽  
Building Energy Efficiency ◽  
Advantages And Disadvantages

This paper reviews the application and development of phase change materials in wall, floor, concrete, points out its advantages and disadvantages, provides reference for phase change materials applied in practice.

Analysis and Application of Phase Change Materials on Energy Saving in Buildings

2011 ◽  
Vol 411 ◽  
pp. 523-526 ◽  
Author(s):  
An Wang ◽  
Ming Wen Hu ◽  
Deng Ke Tao ◽  
Jing Wang
Keyword(s):  
Energy Efficiency ◽  
Phase Change ◽  
Energy Saving ◽  
Room Temperature ◽  
Phase Change Materials ◽  
Building Energy ◽  
Building Energy Efficiency ◽  
Swelling Soil ◽  
Composite Phase Change Materials ◽  
Saving Effect

Current research on building energy efficiency and the application of the principle of the phase change materials are outlined. Analysis of research regarding phase change materials and their classifications on energy-saving in buildings are analyzed and the main existing issues are summarized. The energy-saving effect is verified with the utilization of paraffin and swelling soil composite phase change materials, the result of which suggests that room temperature can be comparatively stabilized with the utilization of phase change materials and energy efficiency can be critically increased. This demonstrates that phase change materials have a broad potential in engineering endeavors.

scholarly journals Biomass Derived Porous Carbons Support in Phase Change Materials for Building Energy Efficiency: A Review

2021 ◽  
pp. 100905
Author(s):  
Tengyao Jiang ◽  
Yali Zhang ◽  
Saheed Olayiwola ◽  
ChooiKim Lau ◽  
Maohong Fan ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Phase Change ◽  
Phase Change Materials ◽  
Building Energy ◽  
Building Energy Efficiency ◽  
Porous Carbons

scholarly journals Review on phase change materials and application in building energy saving

2021 ◽  
Vol 236 ◽  
pp. 05006
Author(s):  
Xiangxiang Wu
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Energy Saving ◽  
Building Materials ◽  
Phase Change Materials ◽  
Building Energy ◽  
Research Progress ◽  
Building Energy Conservation ◽  
Building Energy Saving ◽  
New Phase

Phase change materials (PCMs) can be used for thermal energy storage and temperature regulation during phase change, and have broad application prospects in energy-efficient use and energy saving. The compatibility between traditional phase change materials and building materials is too bad to combine in building energy conservation. Therefore, the new phase change materials have become a research focus in the field of phase change energy storage in buildings. In the paper, the research progress of phase change materials in recent years and the optimization and application of passive building energy-saving are reviewed.

Development of an Integrated Performance Design Platform for Residential Buildings Based on Climate Adaptability

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8223
Author(s):  
Zhixing Li ◽  
Mimi Tian ◽  
Yafei Zhao ◽  
Zhao Zhang ◽  
Yuxi Ying
Keyword(s):  
Energy Efficiency ◽  
Life Cycle Cost ◽  
Residential Buildings ◽  
Building Energy ◽  
Building Envelope ◽  
Design Stage ◽  
Design Parameters ◽  
Building Energy Efficiency ◽  
The World ◽  
Integrated Performance

Building energy waste has become one of the major challenges confronting the world today, so specifications and targets for building energy efficiency have been put forward in countries around the world in recent years. The schematic design stage matters a lot for building energy efficiency, while most architects nowadays are less likely to make energy efficiency design decisions in this stage due to the lack of necessary means and methods for analysis. An integrated multi-objective multivariate framework for optimization analysis is proposed for the schematic design stage in the paper. Here, the design parameters of the building morphology and the design parameters of the building envelope are integrated for analysis, and an integrated performance prediction model is established for low-rise and medium-rise residential buildings. Then, a comparison of the performance indicators of low-rise and medium-rise residential buildings under five typical urban climatic conditions is carried out, and the change patterns of the lighting environment, thermal environment, building energy demand, and life cycle cost of residential buildings in each city under different morphological parameters and design parameters of the building envelope are summarized. Specific analysis methods and practical tools are provided in the study for architectural design to ensure thermal comfort, lighting comfort, low energy consumption, and low life-cycle cost requirement, and this design method can inspire and guide the climate adaptation analysis and design process of low-rise and medium-rise residential buildings in China, improve architects’ perception of energy-saving design principles of low-rise and medium-rise residential buildings on the ontological level, as well as provide them with a method to follow and a case to follow in the actual design process.

Comparison Analysis of Lower Temperature PCM on Phase Change Energy Storage Process at Different Models

2012 ◽  
Vol 619 ◽  
pp. 557-560
Author(s):  
Lin Qiu ◽  
Run Ping Niu ◽  
Min Yan
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Phase Change Materials ◽  
Thermal Characteristics ◽  
Building Energy ◽  
Temperature Phase ◽  
Liquid Region ◽  
Simulation Studies ◽  
Storage Process ◽  
Lower Temperature

This article simulation studies the thermal Characteristics of a lower temperature phase change materials (PCMs) using in the building energy storage by two different models. In the process of phase change, liquid phase is used as two ways of heat exchange: pure heat conduction and natural convection, and we exploit CFD software to carry out numerical simulation. To compare and analyze under melt and solidification, the proportion of solid and liquid, the time of phase change, the interface of phase change and motion temperature image of liquid-region.

scholarly journals Review on the Integration of Phase Change Materials in Building Envelopes for Passive Latent Heat Storage

2021 ◽  
Vol 11 (19) ◽  
pp. 9305
Author(s):  
Mohamed Sawadogo ◽  
Marie Duquesne ◽  
Rafik Belarbi ◽  
Ameur El Amine Hamami ◽  
Alexandre Godin
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Latent Heat ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Heat Storage ◽  
Storage Systems ◽  
Latent Heat Storage ◽  
Building Envelopes

Latent heat thermal energy storage systems incorporate phase change materials (PCMs) as storage materials. The high energy density of PCMs, their ability to store at nearly constant temperature, and the diversity of available materials make latent heat storage systems particularly competitive technologies for reducing energy consumption in buildings. This work reviews recent experimental and numerical studies on the integration of PCMs in building envelopes for passive energy storage. The results of the different studies show that the use of PCMs can reduce the peak temperature and smooth the thermal load. The integration of PCMs can be done on the entire building envelope (walls, roofs, windows). Despite many advances, some aspects remain to be studied, notably the long-term stability of buildings incorporating PCMs, the issues of moisture and mass transfer, and the consideration of the actual use of the building. Based on this review, we have identified possible contributions to improve the efficiency of passive systems incorporating PCMs. Thus, fatty acids and their eutectic mixtures, combined with natural insulators, such as vegetable fibers, were chosen to make shape-stabilized PCMs composites. These composites can be integrated in buildings as a passive thermal energy storage material.

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