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A TECHNICAL COUNTERMEASURE OF THE PUMP NOISE CAUSED BY THE PRESSURE RIPPLE TRANSMITTING THROUGH WATER IN THE PIPE.

[In Japanese. / En japonais.]

Author(s) : SATO M.

Type of article: Article

Summary

THE PUMP NOISE FROM THE PUMP-ROOM CAN OFTEN BE HEARD IN OTHER, DISTANT ROOMS. THE NOISE IS CAUSED BY THE PRESSURE RIPPLE TRANSMITTING THROUGH WATER IN THE PIPE. TO REDUCE THE PRESSURE RIPPLE, A HYDRAULIC SILENCER IS EFFECTIVE. HOWEVER, THE EFFECTIVENESS OF CONVENTIONAL SILENCERS VARIES ACCORDING TO THE LOCATION IN THE CIRCUIT. THE PAPER PROPOSES A NEW TYPE OF HYDRAULIC SILENCER THAT IS MADE OF DOUBLE AIR CHAMBERS AND CAN ALWAYS REDUCE A PRESSURE RIPPLE IF IT IS LOCATED AT ANY PART OF THE WATER CIRCUIT, RESULTING IN LESS NOISE.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1990-2526
  • Languages: Japanese
  • Source: Refrigeration - vol. 65 - n. 746
  • Publication date: 1989
  • Document available for consultation in the library of the IIR headquarters only.

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