Technical And Economic Analysis On Energy Saving Reconstruction Of Existing Buildings In A City

Geometric multiples growth with population growth, consumption, energy security became the various countries’ government to consider the number one problem. In the world, after and s energy crisis, the European and American countries have already started to research and promotion of building energy efficiency technology, but the our country on this aspect of the problem of late. External dependence of more than 60% energy in China now, such a large proportion of building energy consumption has become the important task to be solved in our country. Therefore, analysis of existing buildings energy-saving technology is necessary.Based on the old residential buildings in our country has carried on the comprehensive investigation to find.The main contents of this paper are:analyzes the design characteristics of the old residential buildings now. the situation of existence and the crux of the energy-saving reform is slow work. Put forward our country the old residential building energy conservation transformation should have a specific analysis of building structure type, degree of influence of each component in the palisade structure, combining with the characteristics of the local climate using appropriate technology, targeted, in batches. At the same time also to the reconstruction of old residential building energy-saving economic analysis and evaluation.In existing residential buildings energy consumption statistical computing, DeST-h software is adopted for existing residential buildings energy consumption and energy consumption of residential buildings in the simulation of innovation.The main conclusions of this paper are:through a case study, weifang region one of the old residential building construction, economical analysis, verified the present stage, we retrofit for existing residential buildings, not only huge social benefit can be obtained, also can promote the development of the cause of energy conservation and environmental protection, obtains the good economic benefit. It has more important theoretical value and application prospects.