Abstract

An 'Y' strainer type automatic flow rate regulating valve, which functions are to remove impurities from hot water inside the pipe and to maintain a constant flow rate regardless of variations of the differential pressure between valve inlet and outlet at the same time, is developed for distributing hot water equally to several pipes with district heating or central heating system. Numerical analysis of the three dimensional turbulent flow field in a valve shape is carried out to confirm the flow field whether the designed regulator shape is acceptable or not. The final developed valve improves installation time and cost and maintenance ability comparing with set-up 'Y' strainer and regulator separately. Tolerance for the nominal flow rate is also satisfied within ${\pm}5%$.

Keywords

• Automatic flow rate regulating valve;
• Coolant flow rate;
• Differential pressure;
• Strainer;
• CFD

• 자동정유량조절밸브;
• 정유량;
• 차압;
• 스트레이너, 여과기;
• 전산유체역학;