摘要
以石蜡作为相变材料(Phase Change Material,PCM),高密度聚乙烯作为支撑材料,膨胀石墨作为导热增强剂,制成定型相变板。将制备的相变材料板以"三明治"形式贴于轻质实验房南墙内外侧,实验房内侧相变板相变温度约为17~26℃,在冬季发挥保温作用;外侧相变板相变温度约为26~36℃,在夏季发挥隔热作用。对其在夏热冬冷典型城市武汉地区应用的热特性进行实验研究,结果表明,定型相变材料板状态稳定、性能优良。夏季外侧相变墙发挥作用,能够很好地吸收太阳辐射的热量,降低并延缓室内温度峰值,可降低建筑冷负荷,提高室内环境热舒适性。
The shape stabilized phase change material(SSPCM)was made by using paraffin as the phase change material,high density polyethylene as the supporting material and expanded graphite as the heat transfer enhancer.The sandwich-type SSPCM plate was placed in interior and exterior side of the south wall of a lightweight experimental room.The melting temperature of interior SSPCM wallboard for preserving heat in winter was about 17~26℃.The melting temperature of exterior SSPCM wallboard for insulating heat in summer was about 26~36℃.The thermal characteristics of the material were investigated in Wuhan,an area with typical hot summer and cold winter.The results show that the SSPCM wallboard had stable state and excellent performance.In summer,the exterior SSPCM wallboard can absorb solar radiation heat,decrease the peak value of indoor temperature,delay its occurrence,reduce the cooling load of building and improve indoor thermal comfort.
作者
罗振宇
朱娜
胡乃帅
胡平放
李珊珊
杨畅
刘飞
李兴坤
LUO Zhenyu;ZHU Na;HU Naishuai;HU Pingfang;LI Shanshan;YANG Chang;LIU Fei;LI Xingkun(HUAZHONG University of Science&Technology,Wuhan 430074,China)
出处
《建筑科学》
CSCD
北大核心
2020年第8期37-42,91,共7页
Building Science
基金
国家自然科学基金(51508212)
武汉市青年晨光计划项目(2017050304010296)
中央高校基本科研业务费专项资金资助(2016YXZD071)。
关键词
双层相变材料
保温隔热
夏热冬冷
热特性
热舒适性
double-phase change material
thermal insulation
hot summer and cold winter
thermal characteristics
thermal comfort
