夏热冬冷地区节能墙体热工性能分析

（江苏大学 能源与动力工程学院，江苏 镇江  212013）

    摘要：为了在实际工程中因地制宜地选择合适的节能墙体形式。采用有限体积法，对处于典型夏热冬冷地区夏季室外气象条件下的空心砌块、含XPS保温材料砌块以及含相变材料（PCM）砌块墙体的热工性能及气候适应性进行了分析。结果表明：含XPS砌块墙体能减小进入室内的热流量；含PCM砌块墙体的非稳态热工性能显著优于空心砌块墙体和含XPS砌块墙体，且当PCM处于空心砌块室外侧孔时砌块墙体的热工性能最优。

    关键词：夏热冬冷地区；节能墙体；空心砌块；XPS；PCM；热工性能

    中图分类号：TU552.3        文献标识码：A        文章编号：1001-702X（2018）08-00

 

Thermal performance analysis of energy-saving wall in hot summer and cold winter zone

LI Weixiao，ZHANG Yuan，GE Fenghua，WU Zhiwei，QIN Hao

（School of Energy and Power Engineering，Jiangsu University，Zhenjiang 212013，China）

   Abstract：In order to choose the appropriate energy-saving wall form based on local conditions，the finite volume method is used to study the thermal performance and the climate adaptability of hollow block，XPS heat preservation material block and phase change material （PCM） block wall in the summer outdoor weather conditions of typical hot summer and cold winter zone. The results shows that walls with XPS heat preservation material can well reduce the heat flux into the room. The unsteady thermal performance of the wall with PCM is significantly better than that of hollow block and XPS block wall，and the thermal performance of block wall is the best when PCM in the outside hole of hollow block.

    Key words：hot summer and cold winter zone，energy saving wall，hollow block，XPS，PCM，thermal performance