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Recent activity in this group:

Dina Haines's picture

Dina Haines commented on Effective flow area vs physical flow area of an orifice plate in the Control Valve Trim Design group

Sat, 2017/10/21 - 05:07

Gerald Liu's picture

Gerald Liu created Effective flow area vs physical flow area of an orifice plate in the Control Valve Trim Design group

Thu, 2017/08/10 - 02:26

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Standards Council of Canada

Control Valve Trim Design

Gerald Liu's picture
Submitted by Gerald Liu on Sat, 2015/05/23 - 02:03
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If you are interested in engineering design of control valve trims for reducing fluid kinetic energy, and therefore proper energy management in process piping and instrument systems, please join us.

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Effective flow area vs physical flow area of an orifice plate

Gerald Liu's picture
Submitted by Gerald Liu on Thu, 2017/08/10 - 02:26 to Control Valve Trim Design

Have you ever noticed that when a flow goes through an orifice plate, the fluid stream converges downstream of the orifice hole?  i.e. the effective flow area (downstream) is smaller than the physical flow area (upstream).

Question: How to calculate that effective flow area?  (Gerald)

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