RE: Nitrogen Blanket

From: <Nitin>
Date: Thu Mar 13 2003 - 13:16:00 EST

Hi Jim,

We have had a similar issue on one of our DM Water tanks. You could contact Fisher Rosemount. They can size / spec. these valves for you.
You could also visit www.totaltankmanagement.com for additional info. Hope this helps.

Regards,
Nitin

>From: "Steve McKenzie" <Mechproj@xtra.co.nz>
>Reply-To: <a href="/group/PipingDesign/post?postID=NCod7ZUa2uvh-X2SFOCbiNtPail6rnQOm2YQuPIVJHDjkWFiF-lvVXOE_Hb3O13uvoZgUTZ24GDNul3SjxmCD4QSu2U">PipingDesign@yahoogroups.com</a>
>To: <PipingDesign@yahoogroups.com>
>Subject: RE: [PipingDesign] Nitrogen Blanket
>Date: Thu, 13 Mar 2003 11:20:51 +1300
>
>Hi Jim
>
>it has been years since I have done any of this. If the tank is large in
>relation to the tank contents then you will be interested in equilibrium
>conditions and Henrys Law.
>For small contact times the diffusion rate will be the limiting factor and
>you will need to grapple with Ficks law, I think.
>For the equilibrium case have a look at Perry (Chemical Engineers Handbook)
>5th edition P14-3 and 7th edition P 14-5 give an example of the solubility
>of hydrogen in water. The example plus the tables in Perry are probably
>sufficient to you to solve your problem, if you are familiar with partial
>pressures and the like.
>
>Cheers
>
>Steve McKenzie
>
>
>-----Original Message-----
>From: Jim Hubbard [mailto:jhubbard@enercon.com]
>Sent: Thursday, March 13, 2003 4:13 AM
>To: PipingDesign
>Subject: [PipingDesign] Nitrogen Blanket
>
>
>I am looking for a calculation to determine nitrogen blanket purity
>requirements over a deminerailized water storage tank. The nitrogen blanket
>is being used to limit dissolved oxygen to 10ppb in the water. The
>calculation would vary inlet water quality and volume in the tank and
>obviously nitrogen purity.
>
>If you can help, please let me know.
>
>Jim
>
>
>=====================================================
>Discussion List sponsor: The fluid flow calculations website -
>www.LMNOeng.com - LMNO Engineering,
>Research, and Software, Ltd.
>=====================================================
>unsubscribe: <a href="/group/PipingDesign/post?postID=ZHNEDZJi7Pob25KMDjV7vR8xOJ20-DYkQRZD5y1fUaPVy9AWRlfUXp8MC599yWndZQ0Clk_67TlqVumkQjITBGTJq_WbnaFwI2iBuXpZ">PipingDesign-unsubscribe@yahoogroups.com</a>
>=====================================================
>
>
>Your use of Yahoo! Groups is subject to <a href="http://docs.yahoo.com/info/terms/">http://docs.yahoo.com/info/terms/</a>
>
>

---

Cricket World Cup 2003- News, Views and Match Reports. <a href="http://server1.msn.co.in/msnspecials/worldcup03/">http://server1.msn.co.in/msnspecials/worldcup03/</a> Received on Thu Mar 13 13:16:00 2003