Study on Phase Change Material in Grooved Bricks for Energy Efficiency of the Buildings  

作　　者：Niharika Pawar Yasmeen Qureshi Rachit Agarwal Srinivasarao Naik B 

机构地区：[1]Institute for Excellence in Higher Education,Bhopal,Madhya Pradesh,462016,India [2]CSIR-Central Building Research Institute,Roorkee,Uttarakhand,247667,India

出　　处：《Journal of Architectural Environment & Structural Engineering Research》2023年第2期22-32,共11页建筑环境与结构工程研究（英文）

摘　　要：Phase change materials(PCMs)are an interesting technology due to their high density and isothermal behavior during phase change.Phase change material plays a major role in the energy saving of the buildings,which is greatly aided by the incorporation of phase change material into building products such as bricks,cement,gypsum board,etc.In this study,an experiment has been conducted with three identical small chambers made up of normal,grooved and PCM-treated grooved bricks.Before the inclusion of PCM in grooved bricks,PCM material behavior has been studied by different techniques such as DSC,TG/DTA,SEM,and XRD.Thermal properties and thermal stability were investigated by differential scanning calorimeter(DSC)and thermogravimetric analyzer(TGA)respectively.Scanning electron microscopy(SEM)and X-ray diffraction(XRD)were used to determine the microstructure and crystalloid phase of the PCM before and after the accelerated thermal cycling test(0,60,120).These three identical model rooms built were exposed at a temperature just above 40°C with a heater.When the maximum outdoor temperature was 40-41°C,then the temperature of the PCM-treated grooved chamber was 32-33°C.The PCM-treated wall was tested and compared with a conventional and grooved wall.The difference between the PCM-treated grooved chamber and the untreated one was 8-9°C.PCM-treated bricks provided more efficient internal heat retention in summer when the outside temperature increased.

关 键 词：Phase change material Building temperature BRICK Fatty acid Cementitious materials 

分 类 号：TG1[金属学及工艺—金属学]