Economic analysis of exterior wall insulation layer with different orientations of residential buildings in Qinghai area
MENG Xiaojing
WANG Yuan
LI Yanpeng
A Xin
Abstract：Taking the residential buildings in Xining City,Qinghai Province as the research object.The simulation is carried out by EnergyPlus software.The effects of insulation material types and thickness on building heating energy consumption were an-alyzed for exterior walls with different orientations.By combining whole life cycle costing method,the thickness and total cost of 3 thermal insulation materials in 4 orientations are obtained.The results show that increasing the thickness of the insulation layer on the north wall can effectively reduce the energy consumption of building heating,and the energy saving rate of building with graphite polystyrene board insulation material is the highest,which is about 1%higher than that of rock wool board.When the orientation is certain,the economic thickness of the insulation layer from large to small is glass wool board,rock wool board and graphite polystyrene board.When the insulation material is fixed,the economic thickness of the south wall is the smallest and the total cost is the highest,while the economic thickness of the north wall is the largest and the total cost is the lowest.
Keywords：thermal insulation materialsheating energy consumptionorientationeconomical insulation thickness
Publication Date：2025-02-24
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 79-83 )