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Brews & Views Bulletin Board Service * Brews and Views Archive 2004 * February 23, 2004 * I'm considering an wort areation upgrade < Previous Next >

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Justin Bruett (66-81-49-167-modem.o1.com - 66.81.49.167)
Posted on Wednesday, January 30, 2002 - 10:50 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I've been aerating my wort with the small Bernz-O-Matic cylinders and a .5 micron SS sintered stone. I'm considering using a larger 20# bottle with regulator.

Can anyone provide me with re: regulator pressure, duration, and temps?
 

Catt22 (sdn-ar-004ohcincp048.dialsprint.net - 158.252.0.160)
Posted on Wednesday, January 30, 2002 - 11:05 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Justin,

The regulator pressure will be very, very low on the order of 2-3 psi, maybe just a little more than that, trial and error will determine the optimum pressure. The duration will be the same as with the smaller cyliner. Two or three 30 second bursts for a five gallon batch should do it. I assume you are asking how cool the wort should be before you begin aearating. I think under 100F would probably be OK, but I prefer to get it down to 85F or less just to be on the safe side.
 

Mike Pensinger (belvoir-sun1.iern.disa.mil - 198.26.119.84)
Posted on Thursday, January 31, 2002 - 12:08 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I recently got a medical oxygen regulator at a garage sale for $0.50. It seems to meter by flow rate. Does anyone have any experience using this kids of regulator for oxygenation? What is a good flow rate to use. It is marked from .5 to 15

Mike
 

J. Steinhauer (164.111.23.150)
Posted on Thursday, January 31, 2002 - 02:49 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

This link may help with adjusting pressures. Flow rates are in liters per minute. Simply place the pulse oximeter on your finger, and affix the cannula into your nostrils, and the adjust the flow to keep your 02 saturation in the 90's. Probably shouldn't need more than about 2 liters, unless you've smoked three packs a day for thirty years, then you may need five or more.
http://www.floteco2.com/htm/FAQ's/R-Outlet%20vs%20Tank.htm
Anyway, this link shows tank vs. outlet pressures for different flow rates. Just set the flow rate according to the desired outlet pressure.
 

hbadvocate (63.197.69.233)
Posted on Friday, February 01, 2002 - 02:14 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Mike, 3-4 liters per minute is plenty
 

Kevin Eddy (209.86.193.185)
Posted on Friday, February 01, 2002 - 02:45 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Mike, I use the same kind of oxygen equipment for areation. I usually keep my O2 regulator on the lowest setting of .5 liter per minute. I suppose it would depend on your cooling water temp and thus the flow rate of the wort through past the O2 outlet. With .5l/min it gives me plenty of O2 for the yeast with good fermentation rates.

remodeler
 

Bill Pierce (208.57.122.28)
Posted on Friday, February 01, 2002 - 03:38 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I would agree with Kevin if you use an inline oxygenator. If you use a stone in the fermenter, I would set the flow to 4-5 liters per minute for 60-90 seconds.

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