Study On Carbon Emission In The Whole Life Cycle Of Solar Residential Buildings In Western China

In the context of global climate change and relatively large building energy consumption,energy conservation and emission reduction have become a major concern of China.Buildings consume a lot of energy and emit a lot of greenhouse gases during the process of building production,operation and final demolition,so it is urgent to reduce carbon dioxide emissions from buildings and improve global climate.Whole life cycle of the current domestic construction carbon research relatively mature,but less research on solar building carbon emissions,the abundant solar energy resources of western region,most of these areas and cold,cold areas in the building thermal partitions,can adjust measures to local conditions for the development of solar heating buildings,clear solar heating efficiency,studied the characteristic of solar building carbon emissions and to reduce environmental load.This study mainly includes two parts: calculation method and verification of carbon emission of solar residential buildings and ordinary residential buildings in western China.The specific work contents are as follows:First of all,through the domestic and foreign literature research and analysis,this study systematically summarized the research methods of building life cycle evaluation,the calculation methods of carbon emissions and the current situation of solar buildings.In view of the deficiencies of current research and the current development situation of solar buildings,the research framework of this paper was determined.Secondly,through the data collected,the whole life cycle of the urban residential buildings calculation and analysis of carbon emissions,can be found both in the east and the west in the whole life cycle of building carbon emissions accounted for the largest running stage,as high as 85% ~ 96%,the focus of the whole life cycle of buildings to reduce carbon in construction operation phase,operation phase carbon emissions and buildings running stage related to energy consumption,reduce the energy consumption of building operation stage is a carbon reduction shut;From 2015 to 2018,the carbon emission per unit floor area of urban residential buildings showed a rising trend.The total carbon emission of urban houses in the western region is lower than that in the eastern region,which is related to the relatively large building area in the eastern region.Due to the unreasonable utilization of resources,the carbon emission per unit residential building area in the western region is higher than that in the eastern region.The western region is rich in solar energy resources,so it is necessary to rationally use solar energy resources to reduce the carbon emission of residential buildings in the western region.Through literature research and analysis,this paper summarized the passive solar energy utilization forms and characteristics of active solar energy system,such as building materials and structures,and analyzed the characteristics of carbon emission in the whole life cycle.Rational utilization of solar energy resources based on the characteristics of solar energy residential buildings,to the west of different solar house and solar energy partition average house directly benefit type,additional type between the sun and three different active solar energy heating heating form interaction effect on the efficiency of the solar heating of quantitative analysis,the results show that the largest contribution to the active solar energy heating device;Solar energy in the whole life cycle of residential construction in the western areas run phase carbon emissions characteristics is analyzed,and compared with ordinary residential run phase carbon emissions,the results show that in the western region by improving the solar heating efficiency and reduce carbon emissions are the biggest potential for solar energy heating zones in suitable area A,followed by suitable area B,the last is available area,and improve the efficiency of the best area residential building solar energy heating will increase during the running of building carbon emissions,The carbon emission in the operation phase of solar residential buildings in fitting area A,fitting area B and usable area was reduced by 49.2%,22.3% and 13.1%,respectively,compared with that of ordinary residential buildings.Finally,through specific case analysis,the efficiency of the use of solar heating calculation function optimize the building solar energy heating system,the whole life cycle of solar house and average house carbon case analysis can be found,solar house and chemical phase carbon emissions as a result of the active solar energy heating system set up 15% higher than the ordinary residential buildings,and solar energy during the running of building carbon emissions 37% lower than ordinary residential buildings,consistent with above calculation,the whole life cycle of solar energy residential construction than ordinary residential building low carbon emissions by30.1%;...