Research on Carbon Emission Accounting and Carbon Reduction Potential of Campus Buildings:A Case Study of University Students'Apartments in a Cold Region
The construction industry is a key sector for energy consumption and carbon emissions,and green building technology can effectively reduce carbon emissions in this sector.This paper takes a university students'apartment located in a cold region as the research object.Firstly,the carbon emissions over the full life cycle of the building are calculated according to relevant national standards.Then,by means of the scenario analysis,an in-depth analysis of the carbon reduction potential of the students'apartment buildings is conducted,and the carbon emission sensitivity coefficients for both the embodied and operational stages of the building are calculated.Finally,reasonable technical strategies for carbon reduction in students'apartment buildings are proposed.The results show that over the 50-year full life cycle of the building,the total carbon emissions amount to 3638.57 kgCO2·m-2.Among them,carbon emissions during the operational stage account for 81.49%of the total life cycle emissions,the embodied stage accounts for 16.84%,and the demolition stage accounts for 1.67%.The specific scenario simulations and calculation results are as follows:Scenario 1 increases the green area based on the three-star green building standard,achieving a carbon reduction rate of 9.47%;Scenario 2 reduces the heat transfer coefficient of the envelope structure,achieving a carbon reduction rate of 12.90%;Scenario 3 targets the domestic hot water system by increasing the heat pump's coefficient of performance(COP)by 10%,achieving a carbon reduction rate of 21.57%;Scenario 4 optimizes the lighting energy-saving system,achieving a carbon reduction rate of 18.14%;and Scenario 5 combines Scenarios 1,2,3,and 4 into a green technology scenario,resulting in significant carbon reduction effects with a carbon reduction rate of 28.23%.The findings of this paper can provide a certain reference for research on carbon reduction measures for apartment buildings.
carbon emissionsscenario analysisgreen building technologycarbon reduction ratecarbon reduction potentialsensitivity analysis
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