相变蓄能空心砌块体系热性能测试与构造分析  

THERMAL PERFORMANCE TEST AND STRUCTURAL ANALYSIS OF PHASE-CHANGEENERGY STORAGE TYPE HOLLOW BLOCK SYSTEM

作　　者：张源 杨宇涵 许立 李胜才[1] ZHANG Yuan;YANG Yu-han;XU Li;LI Sheng-cai(College of Civil Science and Engineering,Yangzhou University,Co.,Ltd.,225127,Yangzhou,Jiangsu,China)

机构地区：[1]扬州大学建筑科学与工程学院,江苏扬州225127

出　　处：《建筑技术》2024年第13期1647-1654,共8页Architecture Technology

基　　金：国家自然科学基金资助项目(51508232);教育部人文社科基金资助项目(22YJCZH206);江苏省自然科学基金资助项目(BK20150521);江苏省高等学校自然科学研究面上项目(19KJB560026、21KJB620007);扬州市科技计划项目(YZU212104、YZ2022056);扬州市—扬州大学合作共建科技创新平台项目(YZZP202210)。

摘　　要：本研究建立了墙体构件动态热性能测试试验台,采用(PCM)PX-27、RT-27这两种常用的相变材料,与典型混凝土空心砌块相结合的方式进行测试分析。各墙体在我国夏季西(东)向墙、南向墙和北向墙的典型室外综合温度条件下分别进行了测试。结果表明,墙体的中部和内部区域通常是放置PCM的合适位置;只有当相变总潜热足够高时(试验中高于251.93 kJ),墙体的外侧成为PCM的最佳位置。此外,保温层主要决定了墙体热流的平均水平,在一定程度上降低了内表面温度和热流的振幅;PCM不仅对温度和热流振幅有较大程度的衰减,而且显著提高了墙体的延迟时间。In this study,a test bench for dynamic thermal performance of wall components was established,and the test and analysis were carried out with two common phase change materials(PCM),PX-27 and RT-27,and two typical concrete hollow blocks.Walls were tested under typical outdoor combined temperature conditions of west(east)walls,south walls and north walls in summer in China.Results showed that the middle and inner areas of walls are usually suitable for PCM.The outer areas of walls will be optimal for PCM in case of sufficient total latent heat of phase change(more than 251.93 kJ in the test).Furthermore,the insulation layer mainly determines the average heat flow of walls,and reduces the internal surface temperature and heat flow amplitude to a certain extent.The PCM not only significantly reduces the temperature and heat flow amplitude,but also greatly improves the delay time of walls.

关 键 词：相变材料 围护结构 空心砌块 热工性能 

分 类 号：TU111.4[建筑科学—建筑理论]