Studies Of Rural Houses Carbon Dioxide Emissions Based On Life Cycle Assessment

Because the carbon dioxide in the atmosphere gas greenhouse gas rapid accumulation, cause the greenhouse effect on earth is becoming increasingly serious, reduce greenhouse gas emissions has become an international consensus.In2004China’s total greenhouse gas emissions of about61tons of CO2equivalent (excluding carbon after the net emissions of about56tons of CO2equivalent).From1994to2004, China’s greenhouse gas emissions an average annual growth rate of about4%.In construction and related industries, annual CO2emissions account for about three into the left and right sides.The residential building daily energy generated by the CO2emissions for the most, while the rural residential energy is the important one annulus, so in the global reduction of CO2emission trends, rural residential building CO2displacement research work, will inevitably become China’s overall reduction of CO2emission plan an important link.Consider the domestic in residential building life cycle of CO2emissions related studies on rural residential, a ring, is the initial stage, therefore, the research based on life cycle analysis (LC A) basic concept and theoretical framework for the foundation, the establishment of the rural residential energy consumption and CO2emission calculation model, use this calculation model of quantitative analysis of the rural housing in each stage of life cycle energy consumption and emissions of carbon dioxide, the specific is located in Hebei province Langfang Sanhe Yangzhuang town as an example for analysis, quantitative analysis of the various stages of the life cycle of energy use and carbon dioxide emissions, and from two aspects analysis and comparison of the housing respectively in the whole life cycle of carbon dioxide emissions to the environment caused by the impact of.It is from the same full life cycle (the design service life under the condition of same), analysis and comparison of different stages of carbon dioxide emissions on the environment caused by the different effects.The second is from the different life cycle conditions (the design service life of different), analysis and comparison of the same stage under carbon dioxide emissions and total carbon dioxide emissions to the environment, so as to probe into the rural residential buildings in energy saving and environmental emissions in the areas in need of improvement, put forward their own suggestions.Based on the basis of case analysis, the establishment of residential model application software-Plus the Energy simulation calculation, and then the cold and hot load again through the fourth chapter discusses rural residential life cycle assessment of CO2emissions by the calculation of the simple model to calculate the whole life cycle of carbon dioxide emissions, and then analyzed data, it is concluded that influence the rural residential life cycle CO2 emissions from the main life cycle CO2emissions factor have palisade structure performance, building structure, heating and cooling mode, and use of the building materials, use area and service life. And then puts forward the rural residential life cycle carbon dioxide mitigation measures shown below:(1) Building materials production phase and waste materials recovery processing stage CO2reduction countermeasures:a. Structure rationalization, b. Structure lightweight, c. Use "renewable building materials" that can be recycled materials, d. The use of natural materials, e. The use of local materials.(2) Living use stage reduction countermeasures:a. Reduce heating and refrigeration produce carbon emissions, b. The rural residential design stage to adopt effective energy saving design, c. Into solar energy, wind energy, waste heat recovery and recycling of straw renewable energy sources such as technology and effective air conditioning, lighting energy saving monitoring and control system. d. To improve rural residents environmental awareness and education, develop good energy use and operation common sense, and operation and maintenance management in order to improve energy efficiency.(3) Construction and destruction demolition stage reduction measures:the higher the height and size of the house, and its construction process required consumption of energy and produce CO2emissions, so the appropriate housing size can effectively reduce CO2emissions. Therefore, in the rural residential construction, to promote the rationalization of building and moderate change, not the pursuit of large area residential, reasonable enough become, to build more ecological low carbon housing. On the other hand, building unit should industrialization, standardization production, in the countryside with regular team construction, in order to reduce the construction process of the operation, reduce energy use to reduce carbon emissions.This paper deals with light steel type residential characteristics and and rural residential life cycle CO2emission reduction relationship, for the future development of the rural house have a prospect, hope to make light steel type house in the countryside, so that can promote the building life cycle from come more effective carbon dioxide mitigation measures.