Flow visualization of supersonic two-phase transcritical flow of CO2 in an ejector of a refrigeration system

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• 作者：Yinhai Zhu ; Zhecheng Wang ; Yiping Yang ; Pei-Xue Jiang ; ^{jiangpx@mail.tsinghua.edu.cn}
• 关键词：Ejector ; CO2 ; Transcritical cycle ; Visualization ; Two-phase flow
• 刊名：International Journal of Refrigeration
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：74
• 期：Complete
• 页码：354-361
• 全文大小：1883 K
• 卷排序：74

文摘

Two-phase flow in a supersonic CO2 ejector was visualized. The liquid fraction after nozzle exit increases with increasing inlet pressures. The expansion angle at nozzle exit decreases with increasing secondary flow pressures. The entrainment ratio is inversely related to the expansion angle.