相变蓄能砌体外墙中间歇通风的热过程分析  

Heat process analysis on intermittent ventilation on phase change energy storage wall

作　　者：庄孙歧 程建杰[1] 何嘉鹏[1] 张源[2] 

机构地区：[1]南京工业大学城市建设与安全工程学院,江苏南京210009 [2]东南大学能源与环境学院,江苏南京210096

出　　处：《南京工业大学学报（自然科学版）》2015年第1期111-116,共6页Journal of Nanjing Tech University(Natural Science Edition)

基　　金："十二五"国家科技支撑计划(2011BAE14B06)

摘　　要：基于焓法模型,利用Fluent软件模拟分析南京地区民用建筑南外墙在夏季典型气候与太阳辐射共同作用下,绝热材料发泡聚苯乙烯(EPS)与相变材料(PCM)在三排孔砌块中不同组合时,间歇通风风速变化对室内的热影响。结果表明:相变墙外孔中为保温材料、内孔中为相变材料(构造B)在流速为2 m/s时效果最佳,在此流速下稳定后的一个周期内,室内温度波动值与热流密度相对于无机械通风分别降低了67.5%和74.04%,且温度波动平均值等于相变温度31.1℃,这样能充分发挥相变材料的作用。With the combined effects on a typical summer climate and solar radiation, the south wall of civil architecture in Nanjing summer was investigated.Based on enthalpy model,Fluent software was used to simulate and analyze the indoor heat influence on the velocity of intermittent ventilation when the thermal insulation material expanded polystyrene （EPS） and phase change materials （PCM） for different combinations of the three-hole block. Results showed that the phase change wall with EPS in outer hole and PCM in inner hole （ structure B） worked best at the velocity of 2 m/s. Compared with no mechanical ventilation, the reduction of temperature swing value and flux was 67.5% and 74.04%, respectively, in a stable cycle at the velocity, and the indoor temperature swing average value was equal to the phase change temperature of 31.1 ℃ with the full function of PCM.

关 键 词：相变蓄热 间歇通风 室内温度 热流 

分 类 号：TU111.48[建筑科学—建筑理论]