Greetings, it's good to be back on the board and brewing again after taking some time away from the hobby.
I brewed a batch last weekend and Kal I am curious as to what others using your system / clones have shared with regards to boil off.
I planned a 6 gallon batch using Beer-smith.
I collected 8 gallons of Wort and began a 60 minute vigorous boil.
I ended my boil with approx 6 gallons in the kettle and due to waste ended up with just less than 5 gallons in my fermenter.
Yes, my SG ratings were higher than expected.
2 gallons in an hour is just nuts, thinking of doing a 30 minute IPA and testing to see how it effects the hops.
Joined: 22 May 2013 Posts: 746 Location: The Ozark Mountains of Missouri
Link Posted: Wed May 10, 2017 6:44 pm Post subject:
just back off the heat to the boil and you'll be fine, I run mine on 100% for a few minutes but started backing down as far as I can go just to save the evaporation, beers tasted the same _________________ "Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world."
(How hard you boil is a topic that's argued back and forth by brewers. I like to boil hard as it helps maximize alpha acid extraction from the hops, drive off unwanted volatile compounds, and coagulate unwanted proteins. Some say it's better for long term beer stability as well).
Drinking: Launch IPA, Double Sunshine clone, Maple Coffee breakfast stout
Working on: expanding my beer horizons (and my beltline)
Link Posted: Fri May 12, 2017 11:01 am Post subject:
Just keep in mind that those duty cycles are for the 20 gallon Blichmann kettles. Different sizes and maybe even different manufacturers will require different duty cycle settings. Best to experiment and see what the ideal setting is for your particular equipment. _________________ Kal clone controller, 30 gallon Spike Brewing kettles, 6 tap keezer
Drinking: Chocolate Taco, Raspberry Mango Cider, American X, Sandy Dunes
Working on: Nothing
Link Posted: Fri May 12, 2017 12:28 pm Post subject:
Just keep in mind that those duty cycles are for the 20 gallon Blichmann kettles. Different sizes and maybe even different manufacturers will require different duty cycle settings. Best to experiment and see what the ideal setting is for your particular equipment.
Correct and also the amount of wort you are boiling will affect that %. At 7 gallons I'm close to 60% _________________ Visit dp Brewing Company
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Joined: 12 Dec 2010 Posts: 10739 Location: Ottawa, Canada
Drinking: German Lager, Electric Creamsicle, London Pride, Kolsch, Belgian IPA, Red IPA, Russian Imperial Stout, Black Butte Porter
Working on: Weizen, Belgian Quad, Wit, English Pub Ale, Electric Creamsicle
Link Posted: Fri May 12, 2017 12:52 pm Post subject:
Yup! Not just the kettles, it's dependant on:
- Volume of liquid (kettle size like you say)
- Amount of power in the kettle (watts). Could be 4500W, 5500W, 9000W, 11000W, etc.
- Kettle insulation (if any)
- Kettle diameter (the more exposure, the more boil-off you have)
- Ambient temp, wind, humidity level, etc.
- How vigorous of a boil you want in the first place
Definitely play around and see what works for you. Good luck!
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