binkman

Recipes 

Okay, all you people with keggles. I'm getting one, too. It's on it's way.



Now I have to try to dial in the boil-off rate, though. I've got one of these: http://www.amazon.com/gp/product/B0009JXYQ4

Any rough estimations would be helpful. Thanks.

Reelale

Recipes 

I boil off about 1.5 gallons per hour. I set beersmith to 20%. YMMV. You'll probably have to do a couple of boils to know for sure. Lots of variables.

37OliveStBrews

Recipes 

Are you doing 5 or 10 gallon batches and what's you heat source?

D-MOTITAN

Recipes 

I boil off 3/4 of a gallon in one hour. Thats five gallon batches on a sp 10 .

binkman

Recipes 

Propane tank hooked up to the stand I linked to (SQ14). 5 gallon batches.

__________________
Primary: RIS — Baja Common — Apfelwein
Secondary: Show Mead — Celery and Beetroot Wine
Kegged: Brown Porter
Bottled: B'more Malty Pale Ale — Orfy's Bitter — Swinging Hammock Summer Kölsch — Dry-Hopped Bitter — Apfelwein — Pumpkin ale — B'more Malty Pale Ale — Kitchen Sink Red — Cider — Spontaneous Cider — Armistice Barleywine

Flomaster

Recipes 

I boil off 2.6 gallons an hour, just tested last weekend went from 5 gallons down to about 2.4.

it depends on your location
it depends on your equipment
it depends on how vigorous your boil is

-=Jason=-

__________________
Flomaster's Dual Tower Keezer Build

BulldogBrewer

Recipes 

Wow, that's some crazy boil off rate!

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Primary: Hophead Summer Ale, Watermelon Wheat
Secondary: Empty
In the Keg: Red IPA, Centennial Blonde, Hophead Summer Ale, Pliny Clone
Bottle: Apfelwein, Cranegranate Apfelwein
On Deck: Sweet Stout

TerryD

Recipes 

I'm up to 6.5 ga and still had to top off w/ 2 ga. 90 deg, 90% humidity, at sea level.

passedpawn

Recipes 

Boil-off rate is independant of batch size. It's mostly just a matter of how much heat is getting into the kettle. So, the burner is the biggest factor here.

__________________
Now there's some take delight in the carriages a rolling
and others take delight in the hurling and the bowling
but I take delight in the juice of the barley
and courting pretty fair maids in the morning bright and early

Ohio-Ed

Recipes 

Agree, but I would also add the surface area of the boiling liquid is significant.
I know the OP asked about a keggle, but the diameter of your kettle can make a huge difference.