Abstract： IEC 60534-2-1:2011 pdf free download.Industrial-process control valves - Part 2-1: Flow capacity - sizing equations for fluid flow under installedconditions. This part of IEC 60534 includes equations for predicting the flow of compressible...
IEC 60534-2-1:2011 pdf free download.Industrial-process control valves - Part 2-1: Flow capacity - sizing equations for fluid flow under installedconditions.
This part of IEC 60534 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. Refer to Clause 6
for additional information.
At very low ratios of pressure differential to absolute inlet pressure (pIp), compressible fluids behave similarly to
incompressible fluids. Under such conditions, the sizing equations for compressible flow can be traced to the standard hydrodynamic equations for Newtonian incompressible fluids, However, increasing values of P1PI result in compressibility effects which require
that the basic equations be modified by appropriate correction factors.
Recommended：
