An experimental study and 1-D analysis of an ejector with a movable primary nozzle that operates with R236fa
作者： Shaojie Chen , Guangming Chen , Lingyun Fang
DOI: 10.1016/J.IJREFRIG.2015.08.011
关键词: Secondary flow 、 Work (thermodynamics) 、 Constant (mathematics) 、 Nozzle 、 Physics 、 Discharge coefficient 、 Entrainment (hydrodynamics) 、 Speed of sound 、 Injector 、 Mechanics
摘要: Abstract The nozzle exit position is an important structural parameter of ejector. Research shows that movable primary enhances performance ejectors. present work experimentally studied the critical entrainment ratios ejector at different positions, finding ratio first increases with and then remains constant. A 1-D model proposed to explain this phenomenon found in a certain range, determined by choking secondary flow converging cone. When moves upstream, mixed reaches sound speed constant area section, unchanged.
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