Hi all,
I'm just starting some new work testing some valves on site to ascertain their leak rates. I see a lot of leak rates specified in units such as mbar.L/s or pa.L/s etc. I was wondering how this is applied to liquids. For a compressible fluid I understand that these units are effectively a mass flow rate assuming ideality, but for a liquid do they still apply or should I just use L/s or a mass flow rate?
I don't understand why for a liquid the inclusion of the pressure is done.
Thanks.
Leak Rate Units - Quick Question
Started by black friday, May 15 2012 06:13 PM
3 replies to this topic
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#1
Posted 15 May 2012 - 06:13 PM
#2
Posted 16 May 2012 - 01:38 AM
The higher the pressure is, the higher is the leakage rate - for the same open area, regardless of the fluid phase. Correct?
#3
Posted 16 May 2012 - 02:35 AM
HI BF,
Please find attached and below link,
¨Hope this gives some insight.
http://www.epa.gov/a...2/rate/rate.htm
http://www.adixen.co...n,358,ppar.html
http://www.atcinc.ne...ing-Methods.pdf
Regards
Shivshankar
Please find attached and below link,
¨Hope this gives some insight.
http://www.epa.gov/a...2/rate/rate.htm
http://www.adixen.co...n,358,ppar.html
http://www.atcinc.ne...ing-Methods.pdf
Regards
Shivshankar
Attached Files
Edited by Shivshankar, 16 May 2012 - 02:47 AM.
#4
Posted 16 May 2012 - 06:15 PM
Thank you for the replies guys.
Zauberberg, if it were related to leakage rates being greater at higher pressures wouldn't the units be L/(sec.mbar) ? Or am i offbase here?
Zauberberg, if it were related to leakage rates being greater at higher pressures wouldn't the units be L/(sec.mbar) ? Or am i offbase here?
Edited by black friday, 16 May 2012 - 08:05 PM.
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