STUDY ON PREDICTION METHOD OF EXTERNAL THERMAL INSULATION RETROFIT EFFECTS OF CONDOMINIUMS IN COLD REGION

Abstract

 This paper describes the effects of external thermal insulation retrofit regarding to indoor temperature rising and energy saving of space heating through three real projects of condominiums in Sapporo. The results of the retrofits, the indoor temperatures were all rose with 1.8 to 3.5 degree-C, and the heating energies were all saved with 17 to 46%. It also describes prediction formula of indoor temperature after the retrofit that was conducted through the analysis of the real projects. By the prediction formula, the effects of the retrofit have been able to estimate near real indoor temperature at the time before retrofit.