Orifice Plate sizing

[mattman21]

Im looking to size the hole dia of an orifice plate in quite a hurry... can any 1 help...

i have the following info:

Op Conditions:

Seawater (SG of 1.0 is acceptable for calc.)
upstream pressure: 5.5 barg
therefore pressure drop: 3bar
flow: 10L/min
OD: 12.00mm (+-0.1)

thanx guys,
keep up the good work...
Matt

 

[hacksaw]

use a globe valve

 

[MICHAELLEE]

To size the orifice plate quickly, try the free software from flowcalc32, the programme will calculated in accordance with ISO 5167-1.

Here is the link :

http://home.swipnet.se/controlengineering/flowcalc/downloadfceng.htm

Hope this help
Regards
Michael
Pipe stress engineer

 

[hacksaw]

the issue is not the sizing method or code.

the flow rate specified is so small as to guarantee that pluggage will occur unless the sea water is completely filtered and properly sterilized. in any event you'll be cleaning your orifice more frequently than not. great if you have nothing else to do, hence the comment about using a valve.

 

[TD2K]

I looked briefly at this. At the flow rates you gave, the pressure drop through your tubing needs to be taken into consideration unless it's very short.

I can give you an estimate of the RO if you can give me the wall thickness or ID of the tubing you plan to use.