Life Cycle Assessment on CO_2 Reduction of Street House Reuse

摘要

To estimate the benefits of reuse building, this study selected 8 street-house cases from "Old House, New Life" reuse movement and calculated the average CO_2 emissions of rebuilding and refinishing in their life cycle. The results indicated that the average CO_2 emission is 103.14 kg-CO_2/m~2 before renovation, and 5.73 kg-CO_2/m~2 after renovation. The efficiency of CO_2 emission reduction can be raised up to 60% and 70%. If the street houses extend their life span from 60 years to 90 years, the life cycle CO_2 emissions can be reduced from the original 1.89 kg-CO_2/m~2·yr to 1.39 kg-CO_2/m~2·yr. It's advantageous not only to make the best of old houses, but to decrease the environmental load.