Life Cycle Assessment Of Carbon Emissions From Office Buildings In Yangtze River Delta

The Earth is in the context of global warming. As the main ingredient of greenhouse gas, carbon dioxide has been studied to control its emission with great importance. The development of construction industry drives the prosperity of relevant industries such as steel and cement. For one thing, this phenomenon means huge resource consumption. For another, it also has a strong impact on the environment. Therefore, source analyses and quantitative calculation of carbon emission in building industry is much more meaningful than before.This thesis studies source and impact factors of carbon emission baesd on the theory of life cycle assessment (LCA), and sorts out detailed data. These data are applied into a case study to explain the usage of the data base. The main contents are as follows:Three methods of carbon emission calculation based on the LCA theory are summarized in this thesis. And the discharge coefficient method has been further studied. Then the emission factors of different phases are sorted out.This thesis determines the boundaries of life cycle and its energy consumption in Yangtze River Delta region when checking the carbon emission of whole building life cycle and sorts out the detailed list of carbon emission of energy.The whole life cycle has been divided into five phases:Production, Transportation, Construction, Operation and Demolition. Detailed data of carbon emission in these phases have been collected in different aspects such as productive technology, transportation method, maintenance, etc. Moreover, this thesis proposes an estimation method based on previous research to calculate carbon emission in different phases and build a more complete building life cycle emission data base.This thesis applies the estimation method into calculating the whole life cycle carbon emission of Yves Architectural Building in Southeast University. The result are used to analyze the percentage of emission in different phases. The thesis then summarize the carbon emission state in the building life cycle.