Research on resistance reduction of dividing T-type tee junctions in ventilation and air conditioning pipes

Using the method of experimental research and numerical simulation, studies how to reduce resistance and energy consumption of dividing T-type tee junctions. Through adding a turning vane at the bypass tee pipe to change air distribution and eliminate the air duct vortex and reduce resistance. Analyses the resistance reduction rates at different ratios of the speed v3 in the bypass pipe to the speed v1 in the main pipe. The results show that the resistance reduction effect is obvious at v3/v1≤0.3, and the recommended position of flow deflector and the rate of resistance reduction change with the speed ratios.