Research on the Effectiveness of Building Life-cycle Carbon Reduction from the Perspective of Carbon Trade-off
The development of zero-carbon buildings and near-zero energy buildings is a comprehensive solution for the construction industry to reduce environmental impact.However,few studies have focused on the impact of the improvement of energy-saving effects of building operations on the balance of carbon emissions throughout the life cycle.This study takes an office building in a hot summer and cold winter area as a case,and based on the hybrid analysis method of the whole life cycle,the carbon emission accounting of the whole life cycle of the building is carried out.And compared with traditional buildings and near-zero energy buildings in the same climate zone from the perspective of architectural design life and recycling rate of building materials,a study on the carbon emission trade-offs of the entire life cycle of buildings was carried out.The results show that the carbon emissions of building materials production,transportation,construction and demolition,and building operation during the whole life of the case building accounted for 65.8%,1.0%,2.4%,and 30.8%respectively;after raising the level of building carbon reduction to nearly zero energy consumption,When the life of the building is less than 45 years,the effectiveness of carbon reduction in the whole life cycle is slightly lower than that of the case building.Extending the service life of the building can enhance the effectiveness of carbon reduction in the life cycle of the building;recycling of building materials can effectively reduce the investment recovery of embodied carbon During the period,traditional buildings are more affected and more suitable for building energy-saving renovation.
Life cycle assessment of buildingcarbon emission trade-offsnet-zero energy buildingcarbon reduction effectiveness
万方数据
维普
