Impact of accelerated weather aging on building energy efficiency using cement and gypsum boards with shape-stabilized phase change materials
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View abstract on PubMed
Summary
This summary is machine-generated.Phase-change material (PCM) cement boards show superior durability and sustained energy savings after accelerated aging compared to gypsum boards. Cement boards retain significant latent heat capacity, crucial for building energy efficiency.
Area Of Science
- Building Science
- Materials Science
- Sustainable Energy
Background
- Phase-change materials (PCMs) enhance building envelope thermal performance.
- Durability of PCM-enhanced materials under environmental stress is critical for long-term energy savings.
Purpose Of The Study
- To evaluate the performance and durability of PCM-enhanced gypsum and cement boards.
- To assess the impact of accelerated weather aging on their energy efficiency properties.
Main Methods
- Gypsum and cement boards with shape-stabilized PCM (ss-PCM) were subjected to accelerated aging.
- Thermal properties (conductivity, specific heat, emissivity, solar reflectance, latent heat) were measured before and after aging.
Main Results
- Gypsum boards lost most latent heat capacity post-aging, reducing energy savings significantly.
- Cement boards retained ~54% of latent heat, maintaining 3.1% net energy savings.
- Cement boards demonstrated stable thermal conductivity and high emissivity post-aging.
Conclusions
- PCM-enhanced cement boards exhibit superior environmental durability compared to gypsum boards.
- Matrix composition and PCM encapsulation influence the long-term energy performance of building materials.
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