Carbon emission energy management analysis of LCA-Based fabricated building construction

Abstract

With the gradual warming of the global climate, the development of low-carbon buildings has become an inevitable trend, and research on the carbon emissions of buildings is also imperative. At present, in most studies on energy management of carbon emissions during the construction process, people cannot analyze them with a more accurate method. In order to find an effective carbon emission analysis method, based on the life cycle assessment method (LCA), this paper establishes a carbon emission model, and calculates the carbon emission of residential building materials in different areas, building materials in different industrial buildings, air conditioning cooling and heating schemes, and the whole life cycle of buildings. This article draws the following conclusions: The relationship between the carbon emissions of residential building materials in different regions is: severe cold area>cold area>hot summer and cold winter area>mild area>hot summer and warm winter area. In the analysis of frame structure, brick concrete structure and steel concrete structure, the most carbon emission is steel concrete structure, and the least is frame structure. The carbon emissions of different forms of air-conditioning cold sources are different. Among them, the second option is the direct-fired lithium bromide absorption chiller and hot water unit. The carbon emissions are related to the energy structure. For prefabricated buildings, the proportion of carbon emissions in the construction use phase is the highest, reaching 75%–80%, and the sum of the construction use phase and the building material production phase accounts for more than 90% of the total.