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say2argha
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Join Date: Aug 2010
Posts: 2

Orifice Flow

05/12/2012 10:44 PM

For an orifice plate

Operating pressure is 30 bar.

Max flow 13000 NM3/Hr.,

DP 1000 MMWG

If this pressure is 12 bar & other parameter is same, then flow will be affected or not?
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Yuri B.
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Join Date: Jun 2009
Posts: 262
Good Answers: 1
#1

Re: orifice flow

05/13/2012 4:55 AM

Now the pressure before the orifice is 30 B and after the orifice 29.902 B (delta P 0.098 B, or 1000 mmwg).

If the pressure before the orifice is lowered to 12B, then flow will decrease, the delta P will become less (for instance, 0.04 B)
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#2

Re: Orifice Flow

05/13/2012 4:48 PM

Among other things, it depends if the fluid is a gas (density will change) or a liquid (no change). The 13,000 Nm3/h indicates a gas.

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 In vino veritas; in cervisia carmen; in aqua E. coli.
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Lalit Shukla
Associate

Join Date: May 2012
Posts: 26
#3

Re: Orifice Flow

05/16/2012 6:57 AM

sir

Accuracy of flow readingchange if pressure change even rise or decrease ie we use flow compensation farmula with flow measurement.
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