ウレタン壁内注入と窓の断熱改修効果の2020年までの予測 : 住宅の断熱改修による温室効果ガス排出削減に関する研究

抄録

This research describes effect of injecting rigid poly-urethane foam into walls and doubling glazing/sash as simple renovation methods for houses, according to the estimation of CO_2 emission by heating/cooling and LCCO_2 (Life Cycle CO_2). We estimated the CO_2 emission and LCCO_2 up to 2020 in Japan and obtained the following results. (l)Injecting rigid poly-urethane foam into walls where thermal insulation is little set up reduces LCCO_2 most for detached houses. (2)Renovation of openings brings more LCCO_2 reduction to houses insulated with 1993 energy saving standard in Tokyo. (3)When we choose one out of two methods above, we should take allowance for initial insulation level, house structure, and region. (4)Domestic CO_2 emission concerning thermal insulation for houses can be reduced by 13% to 19% in 2020 with the simple renovation methods.