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PERFORMANCE OF SUBSONIC AIR EJECTOR WITH MULTIPLE NOZZLES. EFFECTS OF DIMENSIONS OF NOZZLE SPACING AND PARALLEL PART OF DIFFUSER.

[In Japanese. / En japonais.]

Author(s) : YAMAMOTO F.

Type of article: Article

Summary

THIS REPORT OFFERS SOME NEW DATA FOR THE DESIGN OF A SUBSONIC EJECTOR WITH MULTIPLE NOZZLES. THE EFFECTS OF THE DIMENSIONS OF THE PARALLEL PART OF THE DIFFUSER AND THE NOZZLE SPACING ON THE PERFORMANCE OF THE MULTIPLE NOZZLE SUBSONIC AIR EJECTOR WERE INVESTIGATED EXPERIMENTALLY. THE RESULTS CAN BE SUMMARIZED AS FOLLOWS: 1. THE OPTIMUM LENGTH OF THE PARALLEL PART OF THE DIFFUSER OF THE MULTIPLE NOZZLE EJECTOR CAN BE REDUCED. THE NOZZLE SPACING OF THE MULTIPLE NOZZLE EJECTOR SHOULD BE MADE SLIGHTLY LARGER THAN THAT OF THE SINGLE NOZZLE EJECTOR ; 2. THE USE OF MULTIPLE NOZZLES CONTRIBUTES TO A REDUCTION OF EJECTOR NOISE DURING OPERATION ; 3. THE MAXIMUM EFFICIENCY OF A SINGLE NOZZLE EJECTOR IS ABOUT 1% GREATER THAN THAT FOR A MULTIPLE NOZZLE EJECTOR.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1983-2314
  • Languages: Japanese
  • Source: Transaction of the Society of Heating, Air-conditioning and Sanitary Engineers of Japan - n. 21
  • Publication date: 1983
  • Document available for consultation in the library of the IIR headquarters only.

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