摘要
针对主动式相变蓄能墙体具有可实现用电量削峰填谷的优点,利于节能减排,采用将相变材料封装于套管内的方式,构建夏季供冷和冬季供暖的双工况主动式低质水相变蓄能墙体,模拟研究了相变温度、质量潜热及导热系数等相变材料物性及相变层布置方式对供冷、暖双工况墙体表面温度、热流密度的影响规律.研究结果表明:设定条件下,供冷、暖双工况下相变材料的适宜相变峰值温度分别为15.0和30.0℃;增大相变材料质量潜热,有利于减小相变墙体的表面温度波动和厚度;提高相变材料导热系数,可提升相变墙体的表面热流;相变层间隔布置方式下,供冷、暖双工况相变墙体的综合热性能最佳.
By the active phase change material(PCM)wall,the peakload shifting for electric network can be realized with energy saving and emission reduction.An active PCM wall with low quality water for double conditions of building cooling and heating was constructed by encapsulating PCM in casing pipes.The effects of PCM physical properties of phase change temperature,latent heat,thermal conductivity and arrangements of PCM layers on the surface temperature and heat flux of PCM wall were simulated.The results show that the peak phase change temperatures of PCMs are about 15.0℃and 30.0℃for building cooling and heating,respectively.The increasing of latent heat of PCM is beneficial to the reduction of surface temperature fluctuation and thickness of PCM wall,while the increasing of thermal conductivity of PCM can increase the surface heat flux of PCM wall.When PCMs are arranged with the interval layout of thermal storage PCM and cold storage PCM,the optimal comprehensive thermal performance of PCM wall for double conditions of building cooling and heating can be achieved.
作者
胡自成
杨晨
郭兴龙
葛凤华
王松
HU Zicheng;YANG Chen;GUO Xinglong;GE Fenghua;WANG Song(School of Energy and Power Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China)
出处
《江苏大学学报（自然科学版）》
CAS
北大核心
2023年第2期242-248,共7页
Journal of Jiangsu University：Natural Science Edition
基金
国家自然科学基金资助项目(51806088)
江苏大学高级人才科研启动基金资助项目(14JDG86)。
关键词
相变墙体
套管
物性参数
布置方式
双工况
PCM wall
casing pipe
physical property parameter
arrangement
double condition
