Public Buildings Material Flow Based On Life Cycle- The Energy Flow And Low Carbon Research

In recent years, many environmental problems caused by greenhouse gas emissions, such as global warming has become the focus of the international community. The main component of greenhouse gases carbon dioxide, accounting for 80%. The construction sector has been a big carbon emissions, including volume of public buildings, and a simultaneous increase in energy intensity scale will bring a lot of carbon emissions, Public buildings will be the focus of our work in building energy saving. As China gradually increase the number of buildings, building materials production, construction, use and other processes are consuming a lot of energy but also produces a large amount of carbon emissions. Therefore, to reduce the building's carbon emissions from energy conservation for our work is important.Through the life-cycle theory of public buildings carbon emission sources demarcation. Then by the time the node into the production and transportation of building materials, construction, building maintenance, construction and waste disposal of these four stages.According to material flow energy flow again subdivided into building materials production subsystem, building materials transport subsystem subsystem construction, building construction waste operators using Subsystem Subsystem five subsystems. You can get on fossil fuels, electricity and other substances as well as the main building material of carbon emission factor. Calculation and analysis of the various stages of inventory data by various subsystems of carbon emissions, Established list contains the main data types and quantities of building materials, transport equipment type and amount of construction machinery and equipment type and Machinery working hours construction. The use of emission factors and carbon emissions inventory data and scenario analysis factor binding method, carbon emissions calculation model established public buildings lifecycle. Then, by calculating the basic theory and analysis to a Beijing office of the public buildings for engineering example, the use of computational model of carbon emissions, carbon emissions and carbon emission calculation of the proportion of the office at all stages of the life cycle of each subsystem. Finally, public buildings carbon lifecycle emissions of the four stages of five subsystems propose appropriate measures carbon emissions and carbon trading based on the theory of two life-cycle perspective.This paper studied computational model to calculate carbon emissions can be directly used in public buildings life cycle carbon emissions, can provide the appropriate basis for the other buildings carbon emissions. Proposes the corresponding carbon emission reduction method research strategy to expand energy conservation construction projects, scientific development and building a low-carbon economic stimulus policy formulation provides a theoretical basis for the corresponding...