相变储能地板采暖系统蓄放热性能模拟  

Simulation Research on Heat Storage and Release of Phase Change Energy Storage Floor Heating System

作　　者：冯国会[1] 崔洁[1] 黄凯良[1] 李慧星[1] 郭慧宇[1] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2012年第3期527-532,共6页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家十一五科技支撑计划项目(50878133);住房和城乡建设部科技攻关项目(2007R32)

摘　　要：目的探讨新型储热式地板采暖系统的蓄放热性能,为相变储能技术在节能建筑中的应用提供必要的理论基础.方法选用有机物癸酸作为相变材料,利用DSC测试其热工性能,建立地板储能模块的二维传热模型,应用有限元软件ANSYS对相变储能地板的蓄放热过程进行模拟,分析储能模块各结构层的温度变化情况,得出蓄放热阶段地板表面温度分布规律.结果在蓄热进行到第8小时,相变材料基本完全融化,蓄热效果良好;停止热水供暖,储存在相变材料中的热量能够使地板6h内保持稳定的热流密度.结论在间歇式供暖方式下,相变材料的潜热蓄能性能可以削减供热峰值、延迟稳定供热的时间,验证了相变储能技术在地板采暖系统中应用的可行性.Probing into the accumulation of heat release performance, this paper presents a new type of floor heating system heat storage for phase change energy storage technology in the application of energy-saving building to provide the necessary theoretical basis. By choosing organic acid as a group of phase change ma- terials, using DSC testing the thermal performance, establishing floor energy storage module of the 2D heat transfer model, using finite element analysis software ANSYS to the accumulation of heat release phase change energy storage floor to simulate the process and analyzing the energy storage module of layers temperature variation, the release storage stage floor surface temperature distribution rule has been obtained. After the 8 hours＇ heat storage,phase change materials almost melt completely, and the heat storage effect is good;Stop hot water heating, and the heat stored in the phase change materials enables the floor to hold in the stability of the heat flux in 6 hours. In the intermittent heating mode, the latent heat storage properties of phase change materials can reduce the heating peak and postpone the stabile heating time. The research has verified the application feasibility of the phase change energy storage technology in the floor heating system.

关 键 词：相变材料 ANSYS 地板采暖 毛细管网 

分 类 号：TU832.16[建筑科学—供热、供燃气、通风及空调工程]