Analysis of carbon emission and carbon reduction potential of green buildings in hot summer and cold winter zone:a case of the Science and Technology Service Building of Ningbo University
An existing green building is selected as case study to study the life cycle carbon emissions of green buildings in hot summer and cold winter zone in China.The total life cycle carbon emissions of 23 992.779 tCO2e and the average annual carbon emission index per unit area of 38.51 kgCO2e·(m·a)-1 are obtained by combining the process-based method and input-output method.In order to explore the carbon emission reduction potential of various green building technologies,a calculation method for carbon emission reduction of green building technologies based on roof,exterior wall,exterior window and air conditioning system was proposed.The simulations were carried out from four aspects:adding photovoltaic panel roof,changing exterior wall material,adopting exterior window with different heat transfer coefficient,and replacing in situ source heat pump with ordinary air conditioning.The carbon emission intensity of those simulations was compared with that of the original green building.The results show that ground source heat pump and solar photovoltaic panel have better carbon emission reduction potential,which can reduce carbon emissions by 8.02％and 12.56％respectively.Considering the carbon implied by the external wall material,the selection of the material has a great influence on carbon emission,while the change of the heat transfer coefficient of the external window has no obvious influence on carbon emission.
green buildingscarbon reduction potentiallife cycle assessmentDeST simulation
万方数据
