냉난방설비의 열화가 건물의 에너지 사용량에 미치는 영향에 관한 해석적 연구

The accuracy of energy simulation for existing building is very important for reasonable energy audit because utility system in building is aging. In this paper, the yearly aging values of boiler and chiller’s efficiency , main utilities of building, have been estimated and energy consumption for existing office building model has been simulated by Visual DOE under 2012 seoul weather data. The results show that the decreased efficiency ratio by increasing of using periods could be increased 10% electricity and 19% gas consumption when each utility system reached at life time. Therefore it represented very important to consider the life time of utility system for accurate simulation of the existing building.