Show simple item record

dc.contributor.otherInternational Pump Users Symposium (25th : 2009)
dc.creatorHirschberger, Michael
dc.creatorJames, Ian
dc.date.accessioned2017-10-05T15:03:31Z
dc.date.available2017-10-05T15:03:31Z
dc.date.issued2009
dc.identifier.urihttp://hdl.handle.net/1969.1/163908
dc.descriptionLectureen
dc.description.abstractSpecifications of some pump users limit the suction specific speed (Nss) with the objective of selecting more reliable centrifugal pumps. This limitation is based on a statistical evaluation of pump failures published by Hallam (1982) that seemed to show a relationship between the value of Nss and the probability of failure. It was stated that intensive suction recirculation had caused the failures of the pumps with high suction specific speed, but the root causes of these failures were not examined at that time. Investigations presented by Bunjes and op de Woerd (1984), Breugelmanns and Sen (1987), and Guelich and Egger (1992) have since shown that suction recirculation depends on a variety of parameters. Experimental investigation by Stoffel and Jaeger (1996) with high and medium Nss-impellers showed that no significant differences of vibrations, shaft deflection, and other dynamic loadings were detected. Therefore the suction specific speed cannot be used as the one and only parameter for the prediction of the reliability of a centrifugal pump. The effect of preventing the use of high suction specific speed pumps can result in having to use a less efficient and more expensive pump, without seeing any measurable benefits in pump reliability.en
dc.format.mediumElectronicen
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherTexas A&M University. Turbomachinery Laboratories
dc.relation.ispartofProceedings of the 25th International Pump Users Symposiumen
dc.subject.lcshPumping machineryen
dc.titleA Review Of NSS Limitations: New Opportunitiesen
dc.title.alternativeReview Of NSS Limitations: New Opportunitiesen
dc.type.genrePresentationen
dc.type.materialTexten
dc.identifier.doihttps://doi.org/10.21423/R1N387


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record