西安建筑科技大学学报(自然科学版)

我国混凝土空心砌块的使用量巨大,如何有效利用EPS绝热材料,进一步提高其热工性能,扩大墙体自保温与隔热的能力以达到节能目标,对推动绿色建筑发展意义重大.本文分析了混凝土空心砌块内部热流渗透方式和路径,提出按传热方式不同区分传热路径,通过提高不同传热路径的热阻来提高砌块的整体热工性能.以此为基础,总结了几项改进空心砌块型式设计思路,同时设计了两组空心砌块并分析其热工性能.希望能抛砖引玉,以探索和设计出更为合理完善的砌块标准型式.

In view of the huge use of concrete hollow blocks in China, how to effectively use EPS heat-insulating materials to further improve its thermal performance and expand the self-insulation and thermal insulation capabilities of walls to achieve energy-saving goals is of great significance to the development of green buildings. In this paper, the method and path of heat flux infiltration in concrete hollow block are analyzed. It is proposed to distinguish heat transfer paths according to different heat transfer modes, and improve the overall thermal performance of the block by increasing the thermal resistance of different heat transfer paths. On this basis, several improved hollow block design ideas are summarized, and two groups of hollow blocks are designed and their thermal performance is analyzed.

引言
1 空心砌块传热特点及减小传热量的方法及设计思路
2 空心砌块的设计与性能
3 结论

图1 砌块内部传热路径<br/>Fig.1 Heat transfer path inside block

图1 砌块内部传热路径
Fig.1 Heat transfer path inside block

图2 改进的固体传热路径<br/>Fig.2 Improved solid heat transfer path

图2 改进的固体传热路径
Fig.2 Improved solid heat transfer path

图3 隔热块位置选择<br/>Fig.3 Location selection of heat insulation block

图3 隔热块位置选择
Fig.3 Location selection of heat insulation block

图4 导热热流通道<br/>Fig.4 Thermally conductive channel

图4 导热热流通道
Fig.4 Thermally conductive channel

图5 A型空心砌块平面简化图<br/>Fig.5 Simplified floor plan of type A hollow block

图5 A型空心砌块平面简化图
Fig.5 Simplified floor plan of type A hollow block

图6 B型空心砌块平面简化图<br/>Fig.6 Simplified floor plan of type B hollow block

图6 B型空心砌块平面简化图
Fig.6 Simplified floor plan of type B hollow block

表1 不同砌块工况<br/>Tab.1 Different block conditions

表1 不同砌块工况
Tab.1 Different block conditions

表2 材料的物理性能<br/>Tab.2 Physical properties of materials

表2 材料的物理性能
Tab.2 Physical properties of materials

图7 1#～8#号空心砌块温度分布图<br/>Fig.7 1#～8#Temperature Distribution Diagram of hollow block

图7 1#～8#号空心砌块温度分布图
Fig.7 1#～8#Temperature Distribution Diagram of hollow block

表3 空心砌块热工性能模拟结果<br/>Tab.3 Simulation results of thermal performance of hollow block

表3 空心砌块热工性能模拟结果
Tab.3 Simulation results of thermal performance of hollow block

表4 A、B系列空心砌块型式设计<br/>Tab.4 Type design of A、B series hollow block

表4 A、B系列空心砌块型式设计
Tab.4 Type design of A、B series hollow block

[1] 赵东来,胡春雨,柏德胜,等.我国建筑节能技术现状与发展趋势[J].建筑节能,2015,43( 3 ):116-121.
[2]LACARRIERE B,LARTIGUE B,MONCHOUX F. Numerical study of heat transfer in a wall of vertically perforated bricks:influence of assembly method[J].Energy and Buildings,2003,35(3):229-237.
[3]GAO Y,ROUX J J, TEODOSIU C,et al.Reduced linear state model of hollow blocks walls, validation using hot box measurements[J]. Energy and Buildings,2004,36:1107-1115.
[4]CHUNG D D L.Cement - matrix composites for smart structures[J].Smart Material and Structures,2000,9( 3): 389-401.
[5]李忠,郭丽.聚苯乙烯泡沫(EPS)综述[J].四川建材,2010(10):10-11.
[6]杜骋,杨军.聚苯乙烯泡沫(EPS)的特性及应用分析[J].东南大学学报(自然科学版),2001(5):139-142.
[7]DEL COZ DIAZ J J,GARCIA Nieto P J,BETEGON Biempica C,et al.Analysis and optimization of the heat -insulating light concrete hollow brick walls design by the finite element method[J].Applied thermal engineering,2007,27(8/9):1445-1456.
[8]HUI SAM C M. Low energy building design in high density urban cities[J].Renewable Energy, 2001,24: 627-640.
[9]NIACHOU A,PAPAKONSTANTIONU K. Analysis of the green roof thermal properties and investigation of its energy performance[J].Journal of Energy Buildings,2001,33(7): 19-29.
[10]李红兰,魏玲.粉煤灰空心砌块墙体热阻的数值模拟[J].建筑科学,2008(12):67-70.
[11]朱文运,胡文,房向阳,等.混凝土小型空心砌块的热阻实验测量及数值分析[J].建筑科学,2014(12):49-53.
[12]张源,何嘉鹏.节能空心砌块选型的正交综合分析[J].建筑技术,2009(4):336-339.
[13]梁淑红.节能利废自保温混凝土空心砌块及砌体性能分析[J].节能环保,2014(6):24-26.
[14]李维孝,张源,葛凤华,等.夏热冬冷地区节能墙体热工性能分析[J].新型建筑材料,2018(9):70-74.
[15]王佳妮.自保温空心砌块传热性能研究[D].绵阳:西南科技大学,2016.
[16]中国建筑科学研究院.民用建筑热工设计规范:GB50176-2016[S].北京:中国建筑工业出版社,2016:附录B.
[17]周辉,钱美丽.建筑材料热物理性能与数据手册[M].北京:中国建筑工业出版社,2010.
[18]吴文生.EPS材料在建筑施工中的应用探析[J].山西建筑,2015(1):121-122.

备注

引言

1 空心砌块传热特点及减小传热量的方法及设计思路

2 空心砌块的设计与性能

3 结论

期刊信息