Just curious as to what kind of boil rate people are using on small systems (especially if you happen to be running a 3-bbl system which is what we have). We're running at 60% and don't seem to be getting as lot of boil-off (only like 2-3 gallons from a batch). Should I bump that up a bit?
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Electric Nanos - what percentage rate are you boiling at?
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Originally posted by somenerve View PostJust curious as to what kind of boil rate people are using on small systems (especially if you happen to be running a 3-bbl system which is what we have). We're running at 60% and don't seem to be getting as lot of boil-off (only like 2-3 gallons from a batch). Should I bump that up a bit?
In general, adjust your system to get the boiloff rate you want. If 60% is not enough to get there, increase it. If you get carmelization or burning on the elements before you get to the level where your boiloff is good, you've got a problem, because your watt density is too high.
Regards,
Mike Sharp
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Originally posted by rdcpro View PostNo one can answer your question with the information you provided. If you have 10 KW of electric heat and you're running 60%, that's 6 KW. If you have 20 KW of heat, and you run 60%, that's 12 KW. 12 KW into 3bbl of wort is going to be a lot different than 6 KW into the same size.
In general, adjust your system to get the boiloff rate you want. If 60% is not enough to get there, increase it. If you get carmelization or burning on the elements before you get to the level where your boiloff is good, you've got a problem, because your watt density is too high.
Regards,
Mike Sharp
I put the same question to Tyler at Stout Tanks and he was kind enough to send me a link with an Excel worksheet for computing boil-off. Comes in very handy!
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Originally posted by somenerve View PostThanks Mike! I totally spaced the wattage factor. For the record, we're running 22 KW (4 * 5500).
I put the same question to Tyler at Stout Tanks and he was kind enough to send me a link with an Excel worksheet for computing boil-off. Comes in very handy!
EDIT Nevermind, I found it. according to the spreadsheet , if you boild for even just an hour at 60% you should be seeing 5.5 gallons of boil off not 2 or 3 unless im reading it wrong?Last edited by augiedoggy; 06-21-2018, 06:55 AM.
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Originally posted by somenerve View PostThanks Mike! I totally spaced the wattage factor. For the record, we're running 22 KW (4 * 5500).
I put the same question to Tyler at Stout Tanks and he was kind enough to send me a link with an Excel worksheet for computing boil-off. Comes in very handy!
If you have access to a clamp-on ammeter, you can measure the current to each of the elements, and measure the voltage across each one. Then you can figure out the actual wattage under your conditions. If these are simple single phase elements, you use this formula:
P = I * E
or,
power (watts) = current (amps) * voltage (volts)
Three phase power uses a different formula. If you want to measure the panel as a whole, you need to figure out how the elements are connected, and it's much more complicated than measuring each one, and adding them up.
It goes without saying to be careful making this measurement, and it should be done by a qualified person.
Regards,
Mike Sharp
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