가변난방도일법을 활용한 공동주택 외피단열사양의 민감도 분석

This study is focused on design conditions for energy saving of apartment house and acquiring 1/2/3 rating by setting mean Q-value as main thermal performance variable. The conclusions are as follows. 1) 4,752 cases of total energy saving rate and heating load compared to standard model according to mean Q-value were analyzed. Heating load decreased 2GJ/yr as mean Q-value fell by 0.1 and the relation was linear. Total energy saving rate compared to standard model increased 5~6% as mean Q-value fell by 0.1. 2) In case mean Q-value is 1.50, total energy saving rate and heating energy consumption according to building direction, shading coefficient of window, the efficiency of boiler, the change of the building location. 3) By setting the variables related to building exterior thermal performance as independent variable and total energy saving rate as dependent variable, the equation between variables was deduced using multiple regression analysis to estimate total energy saving rate for getting the building energy efficient rating. It is expected that derived equation can be used to design apartment house for acquiring 1/2/3 rating by estimating total energy saving rate easily in an early design stage.