Re: [compost_tea] Vortex Brewer.
Will, I would put the stones in the upfeed tubes right where the tank goesf=
rom 90 deg to your 45 or 60 deg angle. At the bottom the water flows of it =
own accord and then you just pick up where that slows down and stones/air l=
ift it from there.
I would use the Sweetwater SL170 or the next smaller linear air pump.
Bobby
Sent from my iPhone
On May 23, 2011, at 12:20 PM, "Will Buck" <willbuck76_at_yahoo.com> wrote:
> Hi, I am in the process of building a 240 gallon Vortex brewer.
>
> My first brew went anaerobic almost immediately. Clearly I have undersize=
d the air supply and while I would appreciate advise on which pump I should=
purchase (I used an Eco7 that allegedly provides7 cfm, it appears that I n=
eed to at least double that rate), my question is more about the properties=
of an air lift pumps so I can maximize the amount of DO.
>
> My design is similar to Bobby Grimes. I purchased a cone bottom tank that=
I mounted on a stand so the tank is about 4 feet off the ground (ideal for=
gravity filling the spray rig). The manifold is attached to the base of th=
e stand and there are three 2 inch pipes that return water over the top of =
the tank via air lift from a 17 inch air stones.
>
> My question is at what depth should I put the air stones in the pipes? If=
I put the stones near the bottom of the pipe I thought this would be ideal=
because the air bubbles would be in contact with the water for a longer pe=
riod of time as they rose up the pipe thus increasing DO. But of course the=
deeper the air stone the lower the performance of the air pump because the=
resistance pressure is greater. In other words, is there any rule of thumb=
regarding the depth of the air stone?
>
> This question becomes very important as I look at purchasing a new pump a=
s regenerative blowers loose performance very quickly the more pressure the=
y are working under.
>
> I would really appreciate any help or ideas, thanks in advance.
>
>
Received on Tue May 24 2011 - 04:37:50 EDT
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