IEC 60534-2-1:2011
Collections
International IEC standards
Publication date
March 2011
Number of pages
111 p.
Reference
IEC 60534-2-1:2011
IEC 60534-2-1:2011
March 2011
International standard
Current
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 ?psizing;- changes to the non-turbulent flow corrections and means of computing results;- multi-stage sizing as an Annex.The contents of the corrigendum of April 2015 have been included in this copy.
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Sumary
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 ?psizing;
- changes to the non-turbulent flow corrections and means of computing results;
- multi-stage sizing as an Annex. The contents of the corrigendum of April 2015 have been included in this copy.
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 ?psizing;
- changes to the non-turbulent flow corrections and means of computing results;
- multi-stage sizing as an Annex. The contents of the corrigendum of April 2015 have been included in this copy.
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Replaced standards
(2)
IEC 60534-2-1:1998/COR1:2000
February 2000
International standard
Cancelled
Corrigendum 1 - Industrial-process control valves - Part 2-1: Flow capacity - Sizing equations for fluid flow under installed conditions
IEC 60534-2-1:1998
September 1998
International standard
Cancelled
Industrial-process control valves - Part 2-1: Flow capacity - Sizing equations for fluid flow under installed conditions
Includes equations for predicting the fow of compressible and incompressible fluids through control valves. Not intended for use when non-Newtonian fluids, fluid mixtures, slurries, or liquid-solid conveyance systems are encoutnererd. Equations for compressible fluids are for use with gas or vapour and are not inteded for use with multiphase streams such as gas-liquid, vapour-liquid or gas-solid mixtures. Valid for valves with xT smaller or equal to 0,84. The contents of the corrigendum of February 2000 have been included in this copy.
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