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Effect of grid and straight-throat on flow characteristics in a two-phase nozzle designed for an absorption refrigerating machine.

[In Japanese. / En japonais.]

Author(s) : LEE Y., DANG C. B., HIHARA E.

Type of article: Article

Summary

The purpose of this research is to improve the performance of a convergent-divergent nozzle for initially subcooled LiBr aqueous solution. The decline in the nozzle efficiency is due to pressure undershoot at nozzle throat and slip between liquid and vapour. The authors performed experiments using nozzle with grid near the throat and straight-throat. The following results were obtained: turbulence by grid near the throat has no effect on the slip between liquid and vapour in divergent nozzle flow; the occurrence of cavitation in straight-throat decrease pressure undershoot at throat and slip between liquid and vapour by turbulence and mixing.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 2006-0739
  • 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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