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Flow characteristics of LiBr aqueous solution in a convergent-divergent nozzle.

[In Japanese. / En japonais.]

Author(s) : LEE Y., DANG C. B., TAKEMURA F., et al.

Type of article: Article

Summary

The performance of an ejector mixing type absorber depends greatly on the performance of the conversion of the thermal energy to the kinematic energy through a convergent-divergent nozzle. The characteristics of convergent-divergent nozzles for flashing expansion of initially subcooled LiBr aqueous solution were experimentally and analytically studied. Flow rates, pressure profiles along nozzles and droplet diameters were measured, and jet-flow pattern at the nozzle exit was observed. This paper presents the effect of inlet pressure, inlet temperature, back pressure and divergent angle on pressure undershoot at the throat, critical flow rates and pressure profiles. It was found that flow pattern near the throat is superheated liquid jet core, and flow pattern in divergent nozzle is mist flow. The experimental and analytical results shows that pressure undershoot exists at the throat and slip between liquid and vapour exists in divergent nozzle flow.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 2006-0738
  • Languages: Japanese
  • Source: Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 22 - n. 2
  • Publication date: 2005

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