공공기관 실내온도 규제와 에너지절약 방안

Set-point control of heating and cooling of the public spaces in Korea is very strict. For example, 18°C for heating season and 28°C for cooling season. These setting points are over the limits of ASHRAE comfort zone, and resulted in uncomfortable working environment. Although these setting points are giving uncomfortable environment for workers in the space, the rule is the rule. So, in this study, an investigation has been performed whether EMS(Energy Management System) implementation of BAS(Building Automation System) could be the better option than strict set-point control for energy savings. eQUEST(DOE-2 Engine) simulations results with the local weather data, Seoul, show that with common and easily implementable EMS saves more energy with comfortable environment than strict set-point control in the public spaces. Also, the results show that Enthalpy controlled Air-sided Economizer and Outdoor Temperature Resets with VSD in Heating and Cooling systems save more energy than strict set-point controls. With these simple EMS operation saves about 15% more than that of minimum set-point setting for heating and cooling season. Therefore, proper EMS operation in buildings is better than the strict set-point control for working environment and energy savings.