应用于太阳能相变蓄热PC构件升温养护建筑的复合相变材料热物性  

Thermal properties of phase change materials used in buildings for solar-phase change thermal storage curing of precast concrete components

作　　者：于楠[1,2] 陈超 蔺洁[1] 韩枫涛[1] 邹平 贺祎鹏[1] 胡庆玲 YU Nan;CHEN Chao;LIN Jie;HAN Fengtao;ZOU Ping;HE Yipeng;HU Qingling(Key Laboratory of Green Built Environment and Energy Efficient Technology,Beijing,Beijing University of Technology,Beijing 100124,China;College of Architectural Engineering,North China Institute of Science and Technology,Langfang 065201,Hebei,China;Institude of Agricultural Mechanization,Xinjiang Academy of Agricultural Sciences,Urumqi 830091,Xinjiang,China)

机构地区：[1]北京工业大学绿色建筑环境与节能技术北京市重点实验室,北京100124 [2]华北科技学院建筑工程学院,河北廊坊065201 [3]新疆农业科学院农业机械化研究所,新疆乌鲁木齐830091

出　　处：《化工进展》2021年第1期297-304,共8页Chemical Industry and Engineering Progress

基　　金：“十三五”国家重点研发计划(2016YFC0700206);宁夏回族自治区重点研发计划重大项目(2019BFF02005);国家自然科学基金(51578012,51378024);新疆公益性科研院所基本科研业务经费项目(ky2019025)。

摘　　要：预制混凝土(PC)构件蒸汽养护工艺以消耗大量化石能源为代价。本研究结合本文作者课题组研制的复合相变材料热特性以及预制混凝土构件蒸汽养护工艺特点,基于被动式太阳能相变蓄热PC构件升温养护建筑一体化设计理念,将复合相变材料应用于升温养护建筑主朝阳墙体内表面,结合Energy Plus能耗模拟软件及试验研究的方法,开展了关于不同热物性复合相变材料对新型升温养护建筑热工性能影响的研究。研究结果表明:较GH-33复合相变材料,主朝阳墙体内表面采用GH-37复合相变材料,墙体内表面温度夜间平均提高3.4℃;PC构件上部表面温度夜间平均提高1.4℃;实验期间复合相变材料的蓄放热速率较前者平均提高62%。研究可为PC构件养护工艺中可再生能源利用、低碳环保生产,提供一种新的途径和方法参考。Prefabricated concrete(PC)components need to be maintained after pouring to guarantee that concrete can harden well in a certain period.Currently,steam maintaining is one of the commonly adopted methods for this purpose.However,it is a bit costly and consumes a large amount of fossil energy.Based on the characteristics of maintaining process of PC components and the thermal characteristics of GH series phase change materials(PCMs)developed by our team,this paper presents an integrated design principle of passive solar energy and phase change heat experiments.Further,the selecting principle of PCMs on the inner surface of the main sun-facing wall of curing buildings wasput forward.The application results of Hebei province,China showed that,the 50mm-thick GH-37 PCM(temperature range of phase transformation:37.4—43.5℃and phase change enthalpy:227.5kJ/kg)was suitable for the main sun-facing wall.Compared with GH-33 PCM,GH-37 PCM allowed the inner surface temperature of the main sun-facing wall to increase by 3.4℃on average at night,the upper surface temperature of PC components to increase by 1.4℃,and the heat storage and release rate of PCM wall to increase by 62%.This research suggests a new method for renewable energy utilization and low-carbon based environmental protection in PC component curing process.

关 键 词：预制混凝土(PC)构件 升温养护建筑 太阳能相变蓄热 复合相变材料 热物性 

分 类 号：TK02[动力工程及工程热物理]