極低温流体圧送用ポンプシステムの開発とそのキャビテーション特性

抄録

When cryogenic fluid such as liquid hydrogen is transported by pump, the thermodynamic effect of the cavitation strikingly occurs. In addition, it is known that its suction performance shows characteristics different from that when water is used as working fluid has been done.

In this study, we developed a pump system pumping liquid nitrogen, and comparison the pressure distribution inside the pump when using water and liquid nitrogen as the working fluid, the purpose is to clarify the influence of the thermodynamic effect of cavitation on the suction performance.

In this report, outline of pump system capable of pumping liquid nitrogen is shown, and the pump suction performance when water is used as a working fluid, which is a reference when liquid nitrogen is used, was examined by experiment and CFD, respectively.