element only boiling on one side? - Home Brew Forums
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Old 09-23-2011, 03:23 PM   #1
ekjohns
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I made a stove assisted eKettle with a 120V HWD element. It does a great job getting a rolling boil but the boil is only on one side of the pot. This is due to its small size. Is this fine? The side that is opposite the element only gets to ~200F but I am boiling off 1 gallon/hr.



 
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Old 09-23-2011, 03:34 PM   #2
BargainFittings
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If its boiling all the liquid is mixing. Not sure how you would only be getting 200 on the other side unless your thermometer is off.



 
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Old 09-23-2011, 03:38 PM   #3
ekjohns
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Ive test my thermometer and its accurate. It seems like the liquid boils then rises to the surface then gets pushed over as more boiling water is pushed up. As it gets pushed over from the main heat source it cools until it cycles back to the element.

 
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Old 09-23-2011, 03:43 PM   #4
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Quote:
Originally Posted by ekjohns View Post
Ive test my thermometer and its accurate. It seems like the liquid boils then rises to the surface then gets pushed over as more boiling water is pushed up. As it gets pushed over from the main heat source it cools until it cycles back to the element.
That's exactly what's happening. Vessels will have a flow caused by the rising/falling of heating/cooling liquids. Hot and cool spots are typical, unless you re-circulate.
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Old 09-23-2011, 03:49 PM   #5
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Sounds logical.

 
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Old 09-23-2011, 04:19 PM   #6
ekjohns
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But is it fine to continue to use?

 
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Old 09-23-2011, 05:59 PM   #7
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Quote:
Originally Posted by ekjohns View Post
But is it fine to continue to use?
Yep it's fine, what you have is a "rolling" boil.
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Old 09-23-2011, 11:30 PM   #8
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Some designs of commercial brewing kettles actually only heat in a localized spot to promote more mixing of the wort.



 
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