The arrangement of phase change materials inside a building wall and its energy performance

Hammid, Ali Thaeer; Jebur, Yasir Mohammed; Parwata, I. Wayan; Patra, Indrajit; Arenas, Luis Andrés Barboza

doi:10.1016/j.seta.2023.103158

Cited by 3 publications

(2 citation statements)

References 40 publications

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“…Furthermore, in terms of energy savings, research has shown that the energy-saving rate of phase change walls in the cooling season is 24.45%, and in the heating season, it is 14.76% [34]. Hammid et al indicated that PCM with a melting temperature of 25 • C can help save energy consumption by 22% [35]. Another study indicates that compared to single-layer PCM, the energy-saving efficiency of double-layer and triple-layer PCM is higher, reaching 15.21% [36].…”

Section: Applications Of Pcm In Constructionmentioning

confidence: 99%

Study on the Influence of the Application of Phase Change Material on Residential Energy Consumption in Cold Regions of China

Wang,

Shao,

Zhao

et al. 2024

Energies

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As the impact of climate change intensifies, meeting the energy demand of buildings in China’s cold regions is becoming increasingly challenging, particularly in terms of cooling energy consumption. The effectiveness of integrating phase change material (PCM) into building envelopes for energy saving in China’s cold regions is unclear. The aim of this study is to assess the effectiveness of PCM integration in building enclosures for energy efficiency in these regions. The research monitored and recorded indoor temperature data from typical residential cases from May to September. This measured data was then used to validate the accuracy of EnergyPlus22-1 software simulation models. Subsequently, the calibrated model was utilized to conduct a comparative analysis on the effects of PCM on indoor temperatures and cooling energy consumption across these regions. The results of these comparative analyses indicated that PCM can alleviate indoor overheating to varying degrees in severe cold regions of China. Focusing on north-facing bedrooms, applying PCMs reduced the duration of overheating in non-air-conditioned buildings in severe cold regions of China by 136 h (Yichun), 340 h (Harbin), 356 h (Shenyang), and 153 h (Dalian). In terms of cooling energy consumption, the energy saved by applying PCMs ranged from 1.48 to 13.83 kWh/m2. These results emphasize that the performance of PCM varies with climate change, with the most significant energy-saving effects observed in severe cold regions. In north-facing bedrooms in Harbin, the energy-saving rate was as high as 60.30%. Based on these results, the study offers guidance and recommendations for feasible passive energy-saving strategies for buildings in severe cold and cold regions of China in the face of climate change. Additionally, it provides practical guidance for applying PCMs in different climatic zones in China.

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Section: Applications Of Pcm In Constructionmentioning

confidence: 99%

Study on the Influence of the Application of Phase Change Material on Residential Energy Consumption in Cold Regions of China

Wang,

Shao,

Zhao

et al. 2024

Energies

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“…The thermal insulation property is of fundamental importance in the current global context, in which energy consumption has grown together with the global economy and urban and industrial activities [21,22]. Building energy conservation plays a crucial role in mitigating energy consumption, and thermal insulation materials hold a significant value in the realm of building energy conservation [23][24][25][26]. Bio-based lightweight aggregates typically consist of carbohydrate structures and exhibit high porosity.…”

Section: Introductionmentioning

confidence: 99%

Exploring Olive Pit Powder as a Filler for Enhanced Thermal Insulation in Epoxy Mortars to Increase Sustainability in Building Construction

D’Eusanio,

Marchetti,

Pastorelli

et al. 2024

AppliedChem

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This article explores the use of olive pit powder (OPP) as a promising resource for enhancing the thermal insulation properties of epoxy mortars. A comprehensive analysis of the chemical and physical characteristics of OPP was conducted, employing analytical techniques including scanning electron microscopy (SEM), thermogravimetric analysis and emitted gas analysis (TG-MS-EGA), and proximal analysis. Experimental samples of epoxy grout were prepared by using different proportions of a conventional inorganic filler, quartz powder, and OPP within an epoxy mortar matrix. As the percentage of OPP in the formulation increased, the microstructure of the samples gradually became more porous and less compact. Consequently, there was a decrease in density with the increase in OPP content. The 28-day compressive strength decreased from 46 MPa to 12.8 MPa, respectively, in the samples containing only quartz (Sample E) and only OPP (Sample A) as a filler. Similarly, flexural strength decreased from 35.2 to 5.3 MPa. The thermal conductivity decreased from 0.3 W/mK in Sample E to 0.11 in Sample A. Therefore, increasing the %wt of OPP improved insulating properties while reducing the mechanical resistance values. This study highlights the potential of OPP as an environmentally friendly and thermally efficient filler for epoxy mortars, thereby promoting sustainable construction practices.

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Research on improving thermal performance of prefabricated sintered hollow wallboard with optimizing filling materials

Chen,

Zhou,

Zhang

et al. 2024

Journal of Building Physics

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The purpose of this paper is to obtain the optimal filling scheme for improving thermal performance of the prefabricated sintered hollow wallboard considering both summer and winter conditions, and achieve self-insulation. Effects of different measures of installing separated paperboard, filling Phase Change Material (PCM) and Thermal Insulation Material (TIM) in the prefabricated wallboard are studied by experiment and COMSOL numerical methods. Firstly, the paperboard is installed in the middle of all cavities to reduce convection heat transfer. The experiment results show that average peak heat flux of the exterior surface in the three test days decreases by 5.25 W/m2 after installing the separated paperboard. Secondly, different filling positions (inner, middle, and outer cavities) and different phase change temperatures (23°C–27°C, 28°C–32°C, and 33°C–37°C) are discussed by COMSOL numerical model in summer condition, and the model is verified by the experimental data. Results show that better scheme is PCM (28°C–32°C) filled in the middle cavities of the prefabricated wallboard, which can increase the delay time and the attenuation factor of interior surface temperature by 2.92 h and 13.66, respectively, compared with no filling scheme. Finally, based on the optimal PCM filling scheme, schemes filled with TIM in different position of other cavities are also analyzed to further improve thermal performance of the prefabricated wallboard throughout the year. Results show that PCM (28°C–32°C) filled in the middle cavities and TIM filled in inner cavities has better effect in summer, and TIM filled in both inner and outer cavities is much better in winter. The evaluation indicators of the two better schemes in summer and winter are compared comprehensively, and the difference is not obvious. The results can provide optimal filling scheme and theoretical guidance for improving thermal performance of the prefabricated sintered hollow wallboard in hot summer and cold winter climate.

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The arrangement of phase change materials inside a building wall and its energy performance

Cited by 3 publications

References 40 publications

Study on the Influence of the Application of Phase Change Material on Residential Energy Consumption in Cold Regions of China

Study on the Influence of the Application of Phase Change Material on Residential Energy Consumption in Cold Regions of China

Exploring Olive Pit Powder as a Filler for Enhanced Thermal Insulation in Epoxy Mortars to Increase Sustainability in Building Construction

Research on improving thermal performance of prefabricated sintered hollow wallboard with optimizing filling materials

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