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Old 11-13-2012, 06:43 PM   #1
OHIOSTEVE
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Default efficiency question

I am getting ready to do my first 10 gallon batch. In order to get my volumes I need for sparging ( limited space in the HLT) I will have to up my normal water to grain ratio from 1.25 qts per lb to 1.5 qts per lb..... will this have any effect on efficiency numbers......Also I usually boil off 1.5 gallons in an hour boil for a 5 gallon batch...will the extra volume change that?



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I started brewing 69 days ago, 35 gal so far. SWMBO hasnt complained yet! Better than the hookers, gambling, and crack I used to do, I guess.
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Old 11-13-2012, 06:53 PM   #2
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Evaporation rates are determined by the surface area of the water and the vigor of the boil. If you use a wider pot, you'll evaporate more water. It's well worth a test run with some water to verify.

Efficiency - really depends on your process. At least for my batch sparge, a looser mash gives a couple percent better efficiency. I've see people claim the opposite though. Either way, it is likely to be a pretty small impact.



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Old 11-13-2012, 07:10 PM   #3
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It is said that a higher water to grain ratio helps efficiency, but in my tests the results are negligible. A 1.5 ratio should theoretically help your efficiency so no worries there.

My boil off rate is the same as yours. I did a 11 gallon batch last weekend and my boil off rate was exactly the same as a 5.5 gallon batch.

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Old 11-13-2012, 10:58 PM   #4
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Thanks guys...about 5 minutes from mashing in cream of three crops

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Old 11-14-2012, 02:59 AM   #5
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well you guys were right.. boil off was exzctly the same.. BUT efficiency took a BIG jump...normally 75% efficiency..83% on this one ( according to hopville beer calculus) I hope it doesn't change the flavor of the beer too much Recipe called for 1.040 ( I usually get a little higher) I got 1.052 on this batch.

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Old 11-14-2012, 07:44 PM   #6
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Nice!! Nothing wrong with better efficiency! With a few 10 gallon brews under your belt you will tune that percentage and know how much grain to mash. Let us know how it turns out.

I always use this calculator on Brewers Friend to accurately hit my gravities on those big ass boils. Sometimes I end up with more or less wort but I hate overshooting my gravity and expecting my yeast to pick up the slack...

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Old 11-14-2012, 07:49 PM   #7
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After doing the ten gallon batch, I see no reason to not continue except for first time brews. or bigger beers. same time frame and twice the beer... and to be honest ( i know this will sound like BS) I think I got a harder more vigorous boil with ten gallons?



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