摘要
近年来,我国北方农村地区的居民仍然在使用火墙这种古老的采暖方式。本文根据能量守恒原理中的瞬态传热公式,应用有限元数值模拟方法比较相变蓄热火墙和传统火墙的传热性能。分析表明相变蓄热火墙能够在采暖间歇时将相变材料储存的热量释放到室内进行供暖,起到时间延迟的作用,减小室内温差波动,实现了农村住宅的采暖节能,具有显著的经济效益。
The traditional heating wall is still beneficial to most rural residents to keep warm in China,which has been used thousand years ago.Based on the principle of energy conservation,and the finite element numerical simulation method,the temperature distribution of two formal heating walls will be calculated and analyzed.The research will be concluded that the heating wall with inner PCM can release heat in the intermittent heating moment and reach the goal of time-delay and energy-saving,the indoor temperature fluctuation can be reduced also.The new kind of heating wall will imply a great remarkable of economic benefit.
出处
《建筑热能通风空调》
2010年第4期27-30,共4页
Building Energy & Environment
基金
国家科技支撑计划项目(2008BAJ08B12)
住房和城乡建设部项目(2008-K4-1)
关键词
数值模拟
温度场
瞬态传热
numerical simulation
temperature field
transient changes
phase change.
