火墙环境下相变材料封装盒体的吸放热规律  

Exothermic and Endothermic Process of Encapsulation Box of Phase Change Material under Hot Wall Condition

作　　者：高小建[1,2] 连纪峰 李双欣[2] 

机构地区：[1]哈尔滨工业大学结构工程灾变与控制教育部重点实验室,黑龙江哈尔滨150090 [2]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《建筑材料学报》2016年第3期556-560,共5页Journal of Building Materials

基　　金："十二五"国家科技支撑计划项目(2013BAJ12B03)

摘　　要：采用恒温箱模拟火墙环境对肉豆蔻酸封装盒体进行加热与自然降温试验,通过埋置热电偶测试该封装盒体中不同位置处的温度,分析了不同金属和厚度封装盒体对其吸放热规律的影响.结果表明：肉豆蔻酸封装盒体在加热阶段可吸收并储存大量热量,在降温阶段具有明显的持续放热平台,可用于调节火墙采暖建筑物的室内温度,随着封装盒体厚度的增大,其储热能力和对周围空间的供热能力增强.当封装盒体厚度相同时,铝质肉豆蔻酸封装盒体的完全相变时间比铜和铁质肉豆蔻酸封装盒体的完全相变时间缩短了10%-20%.Encapsulation box of tetradeconic acid was heated and naturally cooled under a simulated hot wall condition by a thermostat oven.Thermocouples were embedded into different positions of encapsulation box for monitoring the evolution of temperatures.Based on the test results,the effects of encapsulation material type and thickness on exothermic and endothermic process of the encapsulation box were analyzed.The results show that the encapsulation box of tetradeconic acid absorbs and reserves a great deal of heat during the heating period,and a continuous heat release stage is found during the cooling period.Therefore,the encapsulation box of tetradeconic acid can be used to adjust temperature in the hot wallheated building.With increasing thickness of box,the heat storage and supply capacity for the surrounding space are increased.With the same box thickness,a 10%-20%reduced complete phase time of tetradeconic acid is found for the aluminum encapsulation box when being compared with the boxes of copper or iron.

关 键 词：相变材料 火墙 封装盒体材料 封装盒体厚度 吸放热规律 

分 类 号：TB34[一般工业技术—材料科学与工程]