Economic Evaluation And Decision Making To Wall Insulation Material Of Cold District

Energy is the material basis for human survival. With the rapid development of society, energy tension is on the rise, more and more voices called for energy-saving, especially in the representative construction industry, building energy conservation is increasingly becoming the trend and the need of the industry. Maintenance structure of the building is an important part of the building. How to improve thermal property of the maintenance structure to reduce the building energy consumption is one of major research topics in contemporary construction industry.External walls, roofing, doors and windows, cellar is the four components of maintenance structure. Walls accounted for 70% of the building, while the external wall structure in the maintenance account for a large proportion.Energy consumption of the materials used in maintenance structure give the immediate impact on the building energy consumption. Insulation properties and sealing structure of these materials also determine the building energy use, therefore, whether the use of the materials used to maintenance structure especially the material of the wall are scientific and whether the combination of these materials is reasonable, directly related to the actual results of building energy efficiency and housing costs.Take Zhengzhou for example, this survey analyzes the more popular several energy-saving wall insulation systems on the market today in cold regions. We can obtain the meter cost of every energy-saving wall insulation system by market research. Using mathematical model of The Effectiveness of Double Glasses, we can build the relationship between the heat loss and the insulation thickness of every systems, on the basis of the concept of insulation coefficient. Finding the balance between the meter cost and the insulation thickness to obtain the optimum thickness of each system, and then, in the case of energy-saving 65%, giving an economic evaluation of each system both in 25 years lifecycle and both in the average lifecycle in 70 years under the real lifecycle of every system by the whole life-cycle theoryThis paper's findings:take Zhengzhou for example, the economic thickness of insulation of usual systems in cold region; economic evaluation of each system both in 25 years lifecycle and both in the average lifecycle in 70 years under the real lifecycle of every system by the whole life-cycle theory...