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Old 03-12-2008, 12:40 PM   #1
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Default Run Off Speed

I'm looking for some batch sparging information. From everything I've read, you should run off as quickly as possible. What is the reason for this? Will a faster run off increase efficiency or would the opposite be true?



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Old 03-12-2008, 01:22 PM   #2
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I have recently switched over to batch sparging. I drained off enough wort, just to clarify it, and recirculated that back over the grainbed. After that you should be able to draw it off with the valve wide open. This method seemed to work for me. I plan on doing it this way for each batch I make now.

Then you add in your sparge water, stir that in, and let it settle, draw off what would be the second runnings, recirculate the first, cloudy part, then draw off the remainder of the wort. This addressed in John Palmer's How To Brew book.

http://www.howtobrew.com/section3/chapter17.html

Good Luck



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Old 03-12-2008, 01:51 PM   #3
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Quote:
Palmer says:
The wort should be drained slowly to obtain the best extraction.
But it’s not clear if he is referring to batch or fly sparging or both. That is why I am curious if draining slowly will increase the efficiency of a batch sparge. Most here indicate that they drain fast, but I'd like to know why and the effects it has?
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Old 03-12-2008, 02:10 PM   #4
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I used to fly sparge, and I was always drawing it off too fast. 1 qt. per minute is suggested. But that is for fly sparging. I had a major efficiency jump, when I went to batch sparging. Not to mention it went alot quicker, and was much easier too.

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Old 03-12-2008, 02:19 PM   #5
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I crank the valve open enough to drain about 14 gallons in an hour for an 11-12 gallon batch.

The one time i hurried the sparge my eff. ended up alot lower, around 60% as opposed to the average of 80%.

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Old 03-12-2008, 02:29 PM   #6
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Quote:
Reverend JC wrote:
I crank the valve open enough to drain about 14 gallons in an hour for an 11-12 gallon batch.
Do you batch or fly sparge?
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Old 03-12-2008, 02:38 PM   #7
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I have never heard that it matters whether you run off fast or slow. I start slow for the vorlauf and then open the valve all the way once it clears.

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Old 03-12-2008, 02:43 PM   #8
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The general concensous (though some disagree) is that the tradeoff between batch and fly sparging is efficiency versus time. The whole point of batch sparging is to shave a half hour or more off your brewday, so open the valve as far as it will go.

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Old 03-12-2008, 03:54 PM   #9
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There's no implication of speed of runoff in batch sparging. When people say, run it off as fast as possible, the practical reason is because you can and not any particular effect on efficiency. Now, if you were fly sparging, the runoff speed has a direct impact on efficiency.

After my vorlauf, I just open the valve wide.

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Old 03-12-2008, 04:09 PM   #10
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Quote:
Originally Posted by anoldur
Do you batch or fly sparge?

Batch


And im not sure how that is saving you time. But then again i batch spage all at one time so my method is morphodite i guess. I mash 15 to 20lbs of grain in a keggle that will hold 7 gallons of sparge water plus what was already in there with my grain when mashing. When filled to the top i get about 12 to 14 gallons of wort.

All i know is with my system if i rush my sparge, even though i technically do a batch sparge i have a huge eff. problem.


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