Industrial-process control valves - Part 2-1: Flow capacity - Sizing equations for fluid flow under installed conditions

IEC 60534-2-1:2011 includes equations for predicting the flow of compressible and incompressible fluids through control valves. The equations for incompressible flow are based on standard hydrodynamic equations for Newtonian incompressible fluids. They are not intended for use when non-Newtonian fluids, fluid mixtures, slurries or liquid-solid conveyance systems are encountered. The equations for incompressible flow may be used with caution for non-vaporizing multi-component liquid mixtures. This second edition cancels and replaces the first edition published in 1998. This edition constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition: - the same fundamental flow model, but changes the equation framework to simplify the use of the standard by introducing the notion of Δpsizing; - changes to the non-turbulent flow corrections and means of computing results; - multi-stage sizing as an Annex.

Stellventile für die Prozessregelung - Teil 2-1: Durchflusskapazität - Bemessungsgleichungen für Fluide unter Betriebsbedingungen

Vannes de régulation des processus industriels - Partie 2-1: Capacité d'écoulement - Equations de dimensionnement pour l'écoulement des fluides dans les conditions d'installation

La CEI 60534-2-1:2011 comprend des équations permettant de prévoir le débit de fluides compressibles et incompressibles dans les vannes de régulation. Les équations relatives à l'écoulement des fluides incompressibles sont fondées sur les équations de base applicables aux fluides newtoniens incompressibles. Elles ne sont pas destinées à être utilisées pour des fluides non newtoniens, des mélanges de fluides, des boues ou des systèmes transportant des particules solides en suspension dans un liquide. Les équations relatives à l'écoulement des fluides incompressibles peuvent être utilisées, mais avec prudence, pour les mélanges liquides à composants multiples non volatils. Cette deuxième édition annule et remplace la première édition parue en 1998. Cette édition constitue une révision technique. Elle inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - les mêmes modèles fondamentaux de débit mais modifie l'organisation des équations pour simplifier l'utilisation de la norme en introduisant la notion de Δpdim; - des changements dans les corrections pour les fluides non turbulents et dans les moyens d'obtention des résultats; - le passage des calculs multi-étagés en Annexe.

Regulacijski ventili za industrijske procese - 2-1. del: Kapaciteta pretoka - Enačbe za določanje pretoka tekočin pri postavljenih pogojih (IEC 60534-2-1:2011)

Ta del IEC 60534 vključuje enačbe za napovedovanje pretoka stisljivih in nestisljivih tekočin skozi regulacijske ventile. Enačbe za nestisljiv pretok so zasnovane na standardnih hidrodinamičnih enačbah za newtonske nestisljive tekočine. Niso namenjene, da se uporabijo, kadar naletimo na tekočine, ki niso newtonske, mešanice tekočin, pastaste tekočine ali transportne sisteme za tekočine-trdnine. Enačbe za pretok nestisljivih tekočin morajo biti uporabljene pozorno pri hlapljivih večkomponentnih tekočih mešanicah. Dodatne informacije so na voljo v točki 6.

General Information

Status
Published
Publication Date
19-May-2011
Withdrawal Date
03-May-2014
Current Stage
6060 - Document made available - Publishing
Start Date
20-May-2011
Completion Date
20-May-2011

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60534-2-1:2011
01-julij-2011
1DGRPHãþD
SIST EN 60534-2-1:2001
5HJXODFLMVNLYHQWLOL]DLQGXVWULMVNHSURFHVHGHO.DSDFLWHWDSUHWRND(QDþEH
]DGRORþDQMHSUHWRNDWHNRþLQSULSRVWDYOMHQLKSRJRMLK ,(&
Industrial-process control valves - Part 2-1: Flow capacity - Sizing equations for fluid flow
under installed conditions (IEC 60534-2-1:2011)
Stellventile für die Prozessregelung - Teil 2-1: Durchflusskapazität -
Bemessungsgleichungen für Fluide unter Betriebsbedingungen (IEC 60534-2-1:2011)
Vannes de régulation des processus industriels - Partie 2-1: Capacité d'écoulement -
Equations de dimensionnement pour l'écoulement des fluides dans les conditions
d'installation (CEI 60534-2-1:2011)
Ta slovenski standard je istoveten z: EN 60534-2-1:2011
ICS:
23.060.40 7ODþQLUHJXODWRUML Pressure regulators
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
SIST EN 60534-2-1:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 60534-2-1:2011

---------------------- Page: 2 ----------------------

SIST EN 60534-2-1:2011

EUROPEAN STANDARD
EN 60534-2-1

NORME EUROPÉENNE
May 2011
EUROPÄISCHE NORM

ICS 23.060.40; 25.040.40 Supersedes EN 60534-2-1:1998


English version


Industrial-process control valves -
Part 2-1: Flow capacity -
Sizing equations for fluid flow under installed conditions
(IEC 60534-2-1:2011)


Vannes de régulation des processus Stellventile für die Prozessregelung -
industriels - Teil 2-1: Durchflusskapazität -
Partie 2-1: Capacité d'écoulement - Bemessungsgleichungen für Fluide unter
Equations de dimensionnement pour Betriebsbedingungen
l'écoulement des fluides dans les (IEC 60534-2-1:2011)
conditions d'installation
(CEI 60534-2-1:2011)




This European Standard was approved by CENELEC on 2011-05-04. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60534-2-1:2011 E

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SIST EN 60534-2-1:2011
EN 60534-2-1:2011 - 2 -
Foreword
The text of document 65B/783/FDIS, future edition 2 of IEC 60534-2-1, prepared by SC 65B, Devices &
process analysis, of IEC TC 65, Industrial-process measurement, control and automation, was submitted
to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60534-2-1 on 2011-05-04.
This European Standard supersedes EN 60534-2-1:1998.
EN 60534-2-1:2011 includes the following significant technical changes with respect to
EN 60534-2-1:1998:
— the same fundamental flow model, but changes the equation framework to simplify the use of the
standard by introducing the notion of ∆p ;
sizing
— changes to the non-turbulent flow corrections and means of computing results;
— multi-stage sizing as an Annex.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2012-02-04
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2014-05-04
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60534-2-1:2011 was approved by CENELEC as a European
Standard without any mod
...

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