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Old 03-15-2010, 09:03 PM   #1
ggoodman
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Default If I can boil water Can I boil wort

ok So Ive never brewed indoord but in test runs on the stove I can bring six gallons of water to a good boil on the stove. If I can boil six gallons of water I'll have no problem with the wort correct as it is denser and thus will retain heat better..


am I off on my thinking?

Thanks

GG


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Old 03-15-2010, 09:07 PM   #2
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You will be fine. Brew away my friend, brew away.


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Old 03-16-2010, 11:57 AM   #3
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I always thought wort was harder than water to bring to a boil but once it reached that boil it was easier to keep boiling...
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Old 03-16-2010, 12:34 PM   #4
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Old 03-16-2010, 02:42 PM   #5
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Yeah, you are pretty much golden.

Wort IS slightly harder to boil, (google "boiling point elevation", it's a colligative property, meaning it's a function of how much impurity is in the water....), but if you do the math, the BP elevation is around 0.5C or something. I don't know how the latent heat of vaporization changes, but I'm assuming it stays pretty close to the same.

So, yeah, most likely you are fine, as the sugars/etc. don't change the water much.
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Old 03-16-2010, 03:57 PM   #6
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i find my wort doesn't boil till 225 degrees
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Old 03-16-2010, 04:53 PM   #7
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Quote:
Originally Posted by gmtech825 View Post
i find my wort doesn't boil till 225 degrees
I would check the accuracy of your thermometer...
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Old 03-16-2010, 05:17 PM   #8
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Quote:
Originally Posted by gmtech825 View Post
i find my wort doesn't boil till 225 degrees
Either you are boiling the highest gravity wort known to man, or you're at the bottom of the Mariana Trench, or your thermometer is borked.

I am betting option "c"

For example, for a 1.070 SG wort, there is 189 grams/liter of sugar in water. This is 1.05 mol of sugar per liter, or a 1 M solution. BP elevation is deltaT=.512*1*1.05 = 0.538C. So 1.070 SG wort at sea level boils at 100.538C, or 212.968F. Subtract 0.9F for every 500 feet above sea level, or add 0.9F for every 500 feet below sea level. Since most people live above sea level, it's going to be less than 213F for boiling 1.070 SG wort for almost everybody.
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Old 03-16-2010, 06:23 PM   #9
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hmm, this is when its like 20 degrees outside though, i dont know if that makes a differance
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Old 03-16-2010, 06:25 PM   #10
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Quote:
Originally Posted by gmtech825 View Post
hmm, this is when its like 20 degrees outside though, i dont know if that makes a differance
That shouldnt make any difference at all. The temp of the wort is what matters. I would say its time for a new thermo


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