Low-carbon transformation of existing buildings is an important measure for the building sector to achieve the goal of"double carbon".Taking a low-carbon transformation of an office building in Tianjin as an example,a carbon emission model for existing public buildings in cold areas was constructed,and the meaning of low-carbon buildings was assumed.The carbon reduction rates of different low-carbon transformation technologies and the suitable technological paths for low-carbon buildings were evaluated and analyzed.The results show that the carbon emission intensity of the building after low-carbon transformation was 37.79 kg/m2,which is 45.94%lower than the constraint value of GB/T 51161-2016 Standard for Energy Consumption of Building,and can be judged as low-carbon building.The low-carbon building transformation achieved an energy-saving rate of 68.81%and a carbon reduction rate of 70.31%compared to before the transformation through suitable technological paths such as high-performance enclosure structure technology,efficient lighting technology,shallow geothermal energy technology,and solar photovoltaic technology.
维普
万方数据