抄録
Demand of thermal insulation renovation with an emphasis on cost is I considered to increase in the future. So, we went in the development of highly insulated wooden sash of thermal transmittance 0.5[W/m2·K]. In this study, we compare production when CO2 emissions, the CO2 emission reduction effect when attached to the actual housing for the model with three glass that reduce the number of models and the glass using four glass is, it is an object of promotion of low-carbon society by opening repair.
