공급수 온도 제어방안에 따른 난방에너지 공급 및 사용 패턴 비교 연구

In this study, the actual energy consumption of the secondary side of District Heating System(DHS) with different hot water supply temperature control methods are compared. Two methods are Outdoor Temperature Reset Control and Outdoor Temperature Prediction Control. While Outdoor Temperature Reset Control has been widely used for energy savings of the secondary side of the system, the results show that Outdoor Temperature Prediction Control method saves more energy. In general, Outdoor Temperature Prediction Control method is lowering the supply temperature of hot water, and it reduces standby losses and increases overall heat transfer value of heated spaces due to more flow into the space. This study was controlled by the differential pressure control valve applications, inverter system applied, the drive system and differential pressure control valve for mixing application, such as the outside temperature predictions second in just three of the secondary supply of hot water supply system. Empirical results showed that the heat energy use pattern of user side could be existed.