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Analysis of the Temperature Field and Deformation Characteristics of Foam Glass Thermal Insulating Decorative Integrated Board System
Case Studies in Thermal Engineering ( IF 6.8 ) Pub Date : 2022-07-30 , DOI: 10.1016/j.csite.2022.102299
Sha Bin , Xiong Houren , Zheng Hao , Yuan Kelong , Wen Minjie , Zhang Yongfu

Recently, foam glass thermal insulating decorative integrated board has been proposed as advanced external wall insulation. In the present study, the temperature and strain monitoring program is designed to investigate the synergistic of the integrated board and the base wall after installation on the building exterior wall. Moreover, variations of the temperature and strain fields of the system in different aging stages are studied. The obtained results show that the foam glass integrated board has an excellent performance in heat and cold preservation. It is found that the temperature difference between the concrete base layer and the finishing layer reaches 40°C. The temperature fluctuation range of the base layer is only 4°C and 9°C in hot-rain cycles and the heat-cold cycles, respectively. Moreover, it is found that the strain fluctuations of the finishing layer are relatively severe, and the deformation range of −1000με~+2500με and the plastic deformation of +1500με may occur in the hot-rain cycle, and the range of −2000με~+1500με and the plastic deformation of −600με may occur in the heat-cold cycle. Finally, the concept of thermal insulation degradation degree (DT) is proposed. The obtained results reveal that DT rises from 0 to 0.23 in the hot-rain cycle and from 0 to 0.36 in the heat-cold cycle. Through the analysis of the strain changes, the synergistic mechanism of the integrated board and the base wall in the aging process is studied. The present article is expected to provide a theoretical guideline to design foam glass integrated boards.



中文翻译:

泡沫玻璃保温装饰一体板系统温度场及变形特性分析

近来,泡沫玻璃保温装饰一体板被提出作为先进的外墙保温。在本研究中,温度和应变监测程序旨在研究集成板和基础墙在安装在建筑物外墙上后的协同作用。此外,研究了系统在不同老化阶段的温度场和应变场的变化。所得结果表明,泡沫玻璃集成板具有优良的保温保冷性能。发现混凝土基层和饰面层之间的温差达到40°C。在热雨循环和冷热循环中,基层的温度波动范围分别仅为 4°C 和 9°C。而且,发现饰面层的应变波动比较剧烈,在热雨循环中可能出现-1000με~+2500με的变形范围和+1500με的塑性变形,-2000με~+1500με的范围在冷热循环中可能发生-600με的塑性变形。最后,保温退化度的概念(DT ) 被提议。得到的结果表明,D T在热雨循环中从 0 上升到 0.23,在热冷循环中从 0 上升到 0.36。通过对应变变化的分析,研究了集成板与基壁在时效过程中的协同作用机制。本文有望为泡沫玻璃集成板的设计提供理论指导。

更新日期:2022-07-30
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