지역난방 시스템용 3방 비례제어 조절밸브

District heating system on an apartment block recently attracts attention to combine hot water supply pipes which are separated with space heating pipe and warm water supply pipe in current system, and this new system is applied for a part of European nations. In combined system, only one heat source is supplied to the house and distributed for space heating and warm water generating by household substation. Therefore, the effective distribution of supplied heat source in accordance with purposes becomes more important. This paper presents a new three-way proportional control valve for mentioned combined heat source system in district heating with experimental result. The valve operates for controls to divides heat source into two different directions : hot water distributor for space heating and household substation for warm water supply in accordance with the pressure drops of tap water induced by the user. This study shows the controllability and performance of the mechanical control three-way proportional valve for common pipe district heating system with result of experiment.