Study on Effect of Different Wall Insulation Structures on Building Energy Consumption in Low Latitude Region: A Case Study in Qionghai, China
- 229 Downloads
Qionghai is located in the low latitude region where the solar altitude angle is high. It is a typical climate with high temperature, high humidity, intense solar radiation, and small daily temperature variation. Under such climate conditions, designing optimal wall insulation structures is critical for achieving building energy saving. This paper takes a hotel building as a case, to simulate energy consumption of the building with different wall insulation structures in Qionghai by EnergyPlus software. The results show that building envelope insulations have obvious insulation effect, and the energy saving effect of external insulation and sandwich insulation is better than internal insulation. Internal insulation decreased the cold load index of 10.34%, while external insulation and sandwich insulation, respectively, reduce the cold load index of 12.21 and 12.34%. The energy saving effect of the three wall insulation structures would decrease with the increase of autoclaved lime-sand brick layer thickness.
KeywordsEnergyPlus Building envelope Wall insulation structure Building energy consumption
The project is supported by National Key R&D Program of China, Technical System and Key Technology Development of Nearly Zero Energy Building (Number 2017YFC0702600), National Natural Science Foundation of China (Major Program, Number 51590912), and the Basic Research Fund Project of Beijing University of Technology (Number 004000546318525).
- 1.Chen, Y., et al.: Impact of thermal insulating layer upon wall insulating effect. Shanxi Archit. 39(10), 210–212 (2013)Google Scholar
- 2.Jiang, Y.: Current building energy consumption in China and effective energy efficiency measures. HV&AC 35(5), 30–40 (2005)Google Scholar
- 3.Liu, J.P., Wu, L.W.: New energy utilization in architectural energy conservation and design. Energy Eng. 3(2), 12–15 (2001)Google Scholar
- 4.Feng, C.: Research on the Impact of Climate Change on Building Energy Consumption in Chongqing. Chongqing University (2015)Google Scholar
- 5.Li, J.: Energy Saving Effect of Thermal Insulation Walls for Residential Buildings in Hot Summer and Cold Winter Zone. Zhe Jiang university (2013)Google Scholar