Study On Carbon Emissions Calculation And Carbon Emission Reduction Strategies Of Rural Housing Life Cycle In Chongqing

With the continuous improvement of technology,human activities have a profound impact on the earth’s environment,and the greenhouse gas emissions represented by carbon dioxide are increasing,among which the greenhouse gas emissions brought by the construction industry account for nearly 20%,and China is currently the world’s largest carbon emitter,as a responsible country must assume the heavy responsibility of carbon reduction.Nearly 40% of our population lives in rural areas,resulting in huge construction carbon emissions that will continue to increase as rural areas continue to grow.The existing rural houses are affected by the poor thermal performance of building materials and construction techniques,poor construction quality and low durability of building structures,which not only increase the energy consumption of the whole house but also affect the indoor thermal comfort,but also mean that rural areas have great potential for "carbon reduction".But it also means that rural areas have great potential for "carbon reduction".Firstly,based on the analysis of domestic and international literature and research results,we propose to reduce the carbon emissions of rural houses in Chongqing from three levels: construction,demolition and operation.The life cycle evaluation theory and carbon emission calculation methods are introduced and analyzed,and the combination of life cycle measurement method and IPCC inventory method is selected for carbon emission measurement of agricultural houses,and the research objects and application prospects are explained.After completing the theoretical study,we conducted field research on rural houses in Chongqing,extracted the characteristics of Chongqing farm houses through statistical analysis of research data,identified farm houses with Chongqing characteristics as a case study,determined carbon emission factors based on life cycle theory,and conducted carbon emission measurement for the whole life cycle of the houses.The carbon emissions caused by dismantling and cleaning are minimal.The main reason for this phenomenon is the use of firewood.In the context of the study,it was found that firewood is mainly used for cooking and heating,so it is necessary to consider these two aspects in order to reduce the use of firewood.After that,we selected the design drawings of the farmhouse that fit the characteristics of Chongqing to build the baseline model,and conducted the simulation experiment by changing the specific structure of the exterior wall,roof and floor to calculate the carbon emission composition of different structures of the house,and also conducted the economic analysis.The results show that for the rural areas with low economic income,it is not suitable to use insulation measures for the exterior walls and floors of the houses because of the high price.Finally,this thesis proposes carbon reduction strategies for each stage by combining the research and experimental results with other scholars’ research.In the planning and design stage,it is necessary to reduce the volume coefficient of residential buildings,choose the appropriate orientation,optimize the floor plan and design greenery;in the construction stage,it is necessary to select suitable building materials,recycle waste building materials and promote the industrialization of construction;in the operation and maintenance stage,it is necessary to improve the thermal performance of the envelope,reasonably set the external shading of residential buildings and use clean energy;in the demolition and cleaning stage,it is possible to reduce the energy consumption of residential buildings by In the demolition and cleanup stage,the carbon reduction can be achieved by increasing the recycling rate of building materials and extending the service life of residential buildings.