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Old 03-09-2010, 03:32 AM   #1
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Not quite a year ago I built a single tier brewframe.

http://www.homebrewtalk.com/f51/brew...-today-117290/



It worked very well and I have made 30 batches on it in the intervening time.

There were a couple of compromises I made in order to get the system up and running. I really wanted to use stainless steel Cam-locks for disconnects. At the time they were far too expensive. Recently a vendor started offering these connectors from off shore at a price lower than the brass disconnects.

I changed out all the brass fittings for stainless. I ended up selling the brass for half of what I paid for them. This helped offset the cost of the fittings and helped out some HBD members. At the same time I spent about $60.00 to get engraved signs made for the system.



I also instigated discussions with Wayne at BargainFittings.com about a couple of other upgrades. The whirlpool fitting in my kettle was another compromise. The original was a coupler with a street elbow. It worked but wasn't optimal.



Wayne built a more effective fitting for me using a standard elbow and a piece of stainless tubing bent to follow the curve of the keggle.



Another thing I wasn't really happy about was my procedure for adjusting the temperature of the wort entering the fermenter and adding oxygen to help promote effective fermentation. I was just plopping a thermometer into the fermenter and reacting to any temp variations by changing the flow of cold water into my CFC. By the time the wort hit the fermenter and mixed, the temps could vary quite a bit. I really wanted to read the temp of the wort as it was flowing out of the CFC.

I was adding O2 after the wort had filled the fermenter. I felt it might be more advantageous to inject O2 as the wort is flowing into the vessel. There are various studies saying different, but that is the method I used while brewing professionally, so that is what I am used to.

Wayne put together an assembly of different fittings to allow me to do exactly what I wanted.

This past weekend I finally had the chance to brew a batch using all my new toys.



Here is the system set up to whirlpool. The O2 fitting connected to the outlet of the CFC. The O2 stone is in place on the right side of the fitting and a temp probe is inserted in the thermowell on the left side of the fitting.



A little closer look at the fitting. I asked Wayne if I could have the ability to see the wort as it was flowing. He came up with a threaded PVC piece. I found it very helpful in determining O2 flow and when I used water to push the remaining wort out of the CFC at the end of the run.



This is how the diverter panel looks for knockout.



Here is the trubpile left ant the end of my Blonde Ale with some weirdo peeking over the edge of the kettle

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Old 03-10-2010, 04:42 AM   #2
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So, are you getting a tighter trub cone with the new whirlpool fitting?

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Old 03-10-2010, 04:53 AM   #3
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Looking good Wayne you still pull from the street elbow ninety at the left hand side of the kettle?

Cheers
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Old 03-10-2010, 05:00 AM   #4
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So, are you getting a tighter trub cone with the new whirlpool fitting?
The trub cone is quite definitely tighter. The velocity of the whirlpool is also higher. I have to restrict the flow from the pump now.

Paul,

The fitting on the left isn't a street elbow. It is a standard elbow with a close nipple threaded into it. A street wouldn't fit in the space I have. Anyway, I do pull from that fitting.
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Old 03-10-2010, 05:02 AM   #5
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The trub cone is quite definitely tighter. The velocity of the whirlpool is also higher. I have to restrict the flow from the pump now.

Paul,

The fitting on the left isn't a street elbow. It is a standard elbow with a close nipple threaded into it. A street wouldn't fit in the space I have. Anyway, I do pull from that fitting.
Ah i see now how much dead space do you have?
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Old 03-10-2010, 05:25 AM   #6
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Ah i see now how much dead space do you have?
Paul,

I'm not exactly sure what you mean. I never measured the physical distance from the fitting to the kettle but I leave behind 0.625 gallons. This does include the trub cone. I take this amount into consideration in my brewing calculations. I usually end up with between 5.5 and 5.6 gallons in my fermenter.
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Old 03-10-2010, 05:32 AM   #7
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Paul,

I'm not exactly sure what you mean. I never measured the physical distance from the fitting to the kettle but I leave behind 0.625 gallons. This does include the trub cone. I take this amount into consideration in my brewing calculations. I usually end up with between 5.5 and 5.6 gallons in my fermenter.
That is excatly what i meant i think of dead space in volume.
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Old 03-11-2010, 08:41 PM   #8
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I never measured the physical distance from the fitting to the kettle but I leave behind 0.625 gallons.
Maybe a small 90 degree dip tube would help you leave half that much.

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Old 03-11-2010, 09:16 PM   #9
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Maybe a small 90 degree dip tube would help you leave half that much.

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Why would I want to?

I have to leave something behind. That is the whole purpose of the whirlpool and domed bottom. I leave the hop pellets and hot break in the kettle. The solids with a small amount of liquid make up the 0.625 gallons.

I plan my brews so I get 5 gallons exactly in my kegs. I don't waste any amount of liquid. I also do not want any solids in my fermenters.

This is a concept that seems foreign to most homebrewers. They try to get everything possible into the fermenter. I DON'T want everything. I only want the fermentable liquid. I ferment 5.5-5.8 gallons of liquid so I do get 5 gallons in kegs.

Carrying this out to an extreme, the COORS pilot brewery had a 30 barrel brewhouse. and 10 barrel fermenters. They only fermented the middle 10 barrels of the run. The first and last 10 barrels were dumped. When I asked why, I was told they just wanted the "best" liquid with the least amount of solids.
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Old 12-12-2010, 05:50 AM   #10
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Carrying this out to an extreme, the COORS pilot brewery... The first and last 10 barrels were dumped. When I asked why, I was told they just wanted the "best" liquid with the least amount of solids.
Did you remind them that the "best" liquid still COORS? ;-)

Seriously nice brewing set up though.
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