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Experimental investigation of thermally activated glass fibre reinforced gypsum roof
Energy and Buildings ( IF 6.6 ) Pub Date : 2020-08-30 , DOI: 10.1016/j.enbuild.2020.110424
K. Dharmasastha , D.G. Leo Samuel , S.M. Shiva Nagendra , M.P. Maiya

Switch to energy-efficient air conditioning systems and the use of eco-friendly building materials would result in significant energy savings and reductions in CO2 emissions. Thermally activated building system (TABS) is a promising low-energy cooling technology, which provides better thermal comfort than the conventional air conditioning system. In TABS, cooled water circulated in the tubes embedded in one or any combination of roof, floor slab and walls, not only reduces the heat ingress but also cools the building. Integrating TABS with eco-friendly building materials like glass fibre reinforced gypsum (GFRG) could be an intertwining solution. A hybrid system that integrates TABS with GFRG roof is investigated in this study. The thermal behavior of this thermally activated glass fibre reinforced gypsum (TAGFRG) roof is analysed experimentally in terms of diurnal temperature gradients, thermal images of the interior and exterior roof surfaces, decrement factor and water temperature variations. The reinforcement zone of the TAGFRG roof handled a higher cooling load compared to that of air cavity zones. The diurnal temperature fluctuation of interior roof surface at the air cavity and reinforcement zones is reduced by 5.1 and 6.7 °C respectively by TAGFRG roof cooling.



中文翻译:

热活化玻璃纤维石膏屋顶的试验研究

转向高能效的空调系统,使用环保的建筑材料将节省大量能源并减少CO 2排放。热激活建筑系统(TABS)是一种有前途的低能耗制冷技术,与传统的空调系统相比,它具有更好的热舒适性。在TABS中,冷却水在嵌入屋顶,楼板和墙壁之一或任意组合的管道中循环,不仅减少了热量进入,还为建筑物降温。将TABS与玻璃纤维增​​强石膏(GFRG)等环保建筑材料整合可能是一个相互交织的解决方案。本研究研究了将TABS与GFRG屋顶集成在一起的混合系统。根据昼夜温度梯度,屋顶内外表面的热图像,递减系数和水温变化,通过实验分析了这种热活化玻璃纤维增​​强石膏(TAGFRG)屋顶的热行为。与空气腔区域相比,TAGFRG屋顶的加固区域承受了更高的冷却负荷。通过TAGFRG屋顶冷却,在空气腔和加强区的内部屋顶表面的昼夜温度波动分别降低了5.1和6.7°C。

更新日期:2020-09-12
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