采用相变材料集成在混凝土天花板上的建筑被动冷却:一项实验研究

IF 8.9 2区 工程技术 Q1 ENERGY & FUELS
Mohammed A. Almeshaal , R.Y. Sakr , Ismail M.M. Elsemary , Ahmed A. Altohamy
{"title":"采用相变材料集成在混凝土天花板上的建筑被动冷却:一项实验研究","authors":"Mohammed A. Almeshaal ,&nbsp;R.Y. Sakr ,&nbsp;Ismail M.M. Elsemary ,&nbsp;Ahmed A. Altohamy","doi":"10.1016/j.est.2025.118762","DOIUrl":null,"url":null,"abstract":"<div><div>This innovative experimental study evaluated the thermal and mechanical performance of concrete ceilings enhanced with Phase Change Materials (PCMs) for passive cooling in a simulated desert climate. We tested nine concrete blocks, each incorporating three types of PCMs with varying melting points (31 °C, 35 °C, and 42 °C). The PCMs were integrated in different quantities (three or six capsules) and configurations, using custom acrylic supports for precise placement. These blocks were then compared against a control block.</div><div>The results demonstrated significant thermal benefits. Specific configurations with six RT-35 capsules placed at one-third of the block height reduced concrete surface temperatures by up to 5 °C under simulated solar radiation. Furthermore, PCM integration delayed the transmission of the peak heat load through the blocks, with delays of 40–55 min for RT-31, 32–49 min for RT-35, and 0–60 min for RT-42. This indicates the potential for substantial building energy savings. Notably, the RT-42 (Design-2, Position 1) configuration showed the most significant peak load reduction (4.2 °C PLS, 6.7 °C MTR) and the longest delay (60 min PLTL), though its overall effectiveness was highly dependent on its configuration.</div><div>While some configurations had a minimal impact on compressive strength, placing six capsules near the top surface led to an average reduction of up to 10 %. This research provides valuable quantitative data on the thermal and structural implications of integrating PCMs into concrete ceilings. The findings highlight the potential for substantial cooling benefits while also emphasizing the critical need for optimized configuration design to ensure structural integrity.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"138 ","pages":"Article 118762"},"PeriodicalIF":8.9000,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Passive cooling of buildings using phase change materials integrated in concrete ceilings: An experimental study\",\"authors\":\"Mohammed A. Almeshaal ,&nbsp;R.Y. Sakr ,&nbsp;Ismail M.M. Elsemary ,&nbsp;Ahmed A. Altohamy\",\"doi\":\"10.1016/j.est.2025.118762\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This innovative experimental study evaluated the thermal and mechanical performance of concrete ceilings enhanced with Phase Change Materials (PCMs) for passive cooling in a simulated desert climate. We tested nine concrete blocks, each incorporating three types of PCMs with varying melting points (31 °C, 35 °C, and 42 °C). The PCMs were integrated in different quantities (three or six capsules) and configurations, using custom acrylic supports for precise placement. These blocks were then compared against a control block.</div><div>The results demonstrated significant thermal benefits. Specific configurations with six RT-35 capsules placed at one-third of the block height reduced concrete surface temperatures by up to 5 °C under simulated solar radiation. Furthermore, PCM integration delayed the transmission of the peak heat load through the blocks, with delays of 40–55 min for RT-31, 32–49 min for RT-35, and 0–60 min for RT-42. This indicates the potential for substantial building energy savings. Notably, the RT-42 (Design-2, Position 1) configuration showed the most significant peak load reduction (4.2 °C PLS, 6.7 °C MTR) and the longest delay (60 min PLTL), though its overall effectiveness was highly dependent on its configuration.</div><div>While some configurations had a minimal impact on compressive strength, placing six capsules near the top surface led to an average reduction of up to 10 %. This research provides valuable quantitative data on the thermal and structural implications of integrating PCMs into concrete ceilings. The findings highlight the potential for substantial cooling benefits while also emphasizing the critical need for optimized configuration design to ensure structural integrity.</div></div>\",\"PeriodicalId\":15942,\"journal\":{\"name\":\"Journal of energy storage\",\"volume\":\"138 \",\"pages\":\"Article 118762\"},\"PeriodicalIF\":8.9000,\"publicationDate\":\"2025-10-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of energy storage\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2352152X25034759\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of energy storage","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352152X25034759","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0

摘要

这项创新的实验研究评估了相变材料(PCMs)增强的混凝土天花板在模拟沙漠气候下的被动冷却的热学和力学性能。我们测试了9个混凝土块,每个块都包含三种不同熔点(31°C, 35°C和42°C)的pcm。pcm以不同的数量(三个或六个胶囊)和配置集成,使用定制的丙烯酸支撑来精确放置。然后将这些块与控制块进行比较。结果显示了显著的热效益。在模拟太阳辐射下,六个RT-35胶囊放置在三分之一块高度的特定配置可使混凝土表面温度降低高达5°C。此外,PCM集成延迟了峰值热负荷通过街区的传输,RT-31延迟40-55 min, RT-35延迟32-49 min, RT-42延迟0-60 min。这表明了大量节约建筑能源的潜力。值得注意的是,RT-42(设计-2,位置1)配置显示出最显著的峰值负载降低(4.2°C PLS, 6.7°C MTR)和最长的延迟(60分钟PLTL),尽管其总体有效性高度依赖于其配置。虽然某些配置对抗压强度的影响很小,但在顶部表面附近放置6个胶囊,平均可降低10%。本研究提供了有价值的定量数据对热和结构的影响集成到混凝土天花板的pcm。研究结果强调了潜在的巨大冷却效益,同时也强调了优化配置设计以确保结构完整性的关键需求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Passive cooling of buildings using phase change materials integrated in concrete ceilings: An experimental study
This innovative experimental study evaluated the thermal and mechanical performance of concrete ceilings enhanced with Phase Change Materials (PCMs) for passive cooling in a simulated desert climate. We tested nine concrete blocks, each incorporating three types of PCMs with varying melting points (31 °C, 35 °C, and 42 °C). The PCMs were integrated in different quantities (three or six capsules) and configurations, using custom acrylic supports for precise placement. These blocks were then compared against a control block.
The results demonstrated significant thermal benefits. Specific configurations with six RT-35 capsules placed at one-third of the block height reduced concrete surface temperatures by up to 5 °C under simulated solar radiation. Furthermore, PCM integration delayed the transmission of the peak heat load through the blocks, with delays of 40–55 min for RT-31, 32–49 min for RT-35, and 0–60 min for RT-42. This indicates the potential for substantial building energy savings. Notably, the RT-42 (Design-2, Position 1) configuration showed the most significant peak load reduction (4.2 °C PLS, 6.7 °C MTR) and the longest delay (60 min PLTL), though its overall effectiveness was highly dependent on its configuration.
While some configurations had a minimal impact on compressive strength, placing six capsules near the top surface led to an average reduction of up to 10 %. This research provides valuable quantitative data on the thermal and structural implications of integrating PCMs into concrete ceilings. The findings highlight the potential for substantial cooling benefits while also emphasizing the critical need for optimized configuration design to ensure structural integrity.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Journal of energy storage
Journal of energy storage Energy-Renewable Energy, Sustainability and the Environment
CiteScore
11.80
自引率
24.50%
发文量
2262
审稿时长
69 days
期刊介绍: Journal of energy storage focusses on all aspects of energy storage, in particular systems integration, electric grid integration, modelling and analysis, novel energy storage technologies, sizing and management strategies, business models for operation of storage systems and energy storage developments worldwide.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信