소형 건축물의 단열 개보수를 통한 에너지절약 효과 분석

Recently the building energy saving has been a very interesting issue because of the sky-rocketing oil price. But the major interests have focused on the large buildings so that small buildings have attracted no attention at all from public sector. Although the amount of building energy consumption is very little, the number of small buildings are tremendous. The building retrofit and field tests were carried out in the present study for two small and old style buildings. For one building the inner insulation method was adopted as well as high insulation window system with low-E-coating window and air-tight fireproof door, and for the other building the exterior insulation method was used instead of interior one. As results we obtained that the energy saving rate and economic performance of the exterior insulation system was much more excellent relative to the interior system in spite of the high investment cost.