Author Topic: evap rate during boild sub zero temps  (Read 775 times)

Offline Wort-H.O.G.

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evap rate during boild sub zero temps
« on: February 13, 2015, 03:43:42 PM »
wicked cold here and getting colder. with sub zero temps and wind chills -10 to -30, whats the expected impact to evaporation rate during boil....if any?
Ken- Chagrin Falls, OH
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Offline Frankenbrew

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Re: evap rate during boild sub zero temps
« Reply #1 on: February 13, 2015, 03:55:50 PM »
wicked cold here and getting colder. with sub zero temps and wind chills -10 to -30, whats the expected impact to evaporation rate during boil....if any?

Methinks you would get a higher boiloff/evaporation rate.

You are a brave man, brewing at those temps.
« Last Edit: February 13, 2015, 03:59:35 PM by Frankenbrew »
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Offline Wort-H.O.G.

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Re: evap rate during boild sub zero temps
« Reply #2 on: February 13, 2015, 04:09:08 PM »
wicked cold here and getting colder. with sub zero temps and wind chills -10 to -30, whats the expected impact to evaporation rate during boil....if any?

Methinks you would get a higher boiloff/evaporation rate.

You are a brave man, brewing at those temps.

i assumed that, but 75 min into 90 minute boil and right on track for evap rate.
Ken- Chagrin Falls, OH
CPT, U.S.Army
https://www.facebook.com/pages/Harveys-Brewhaus/405092862905115

http://braukaiser.com/wiki/index.php?title=The_Science_of_Mashing

Serving:        In Process:
Vienna IPA          O'Fest
Dort
Mead                 
Cider                         
Ger'merican Blonde
Amber Ale
Next:
Ger Pils
O'Fest

Offline bassetman

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Re: evap rate during boild sub zero temps
« Reply #3 on: February 13, 2015, 10:48:08 PM »
Would it be inappropriate to gloat over 65F today. Brewing in shorts in the sun. ;)
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Offline Wort-H.O.G.

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Re: evap rate during boild sub zero temps
« Reply #4 on: February 13, 2015, 10:51:04 PM »
Would it be inappropriate to gloat over 65F today. Brewing in shorts in the sun. ;)

grrrrr  >:(
Ken- Chagrin Falls, OH
CPT, U.S.Army
https://www.facebook.com/pages/Harveys-Brewhaus/405092862905115

http://braukaiser.com/wiki/index.php?title=The_Science_of_Mashing

Serving:        In Process:
Vienna IPA          O'Fest
Dort
Mead                 
Cider                         
Ger'merican Blonde
Amber Ale
Next:
Ger Pils
O'Fest

Offline Frankenbrew

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Re: evap rate during boild sub zero temps
« Reply #5 on: February 14, 2015, 12:41:41 AM »
How'd it go, Ken? Did the super cold temps affect your boil off?

I'm always interested to know how things go. It adds to my knowledge base without having to experiment myself. Thanks.
Frank C.

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heart, you brew good ale.'

Offline Wort-H.O.G.

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Re: evap rate during boild sub zero temps
« Reply #6 on: February 14, 2015, 12:46:32 AM »
No not a bit


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Ken- Chagrin Falls, OH
CPT, U.S.Army
https://www.facebook.com/pages/Harveys-Brewhaus/405092862905115

http://braukaiser.com/wiki/index.php?title=The_Science_of_Mashing

Serving:        In Process:
Vienna IPA          O'Fest
Dort
Mead                 
Cider                         
Ger'merican Blonde
Amber Ale
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O'Fest

Offline mchrispen

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Re: evap rate during boild sub zero temps
« Reply #7 on: February 14, 2015, 01:32:52 AM »
Move south man! You can ride year round down here... Except for those few weeks in August  when the asphalt melts. Brewed today in lovely 70 degree weather!
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Offline Steve Ruch

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Re: evap rate during boild sub zero temps
« Reply #8 on: February 14, 2015, 05:09:17 PM »
Isn't boiling temperature 212 no matter what the ambient temperature is? Unless you're in Denver, of course.
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Offline Wort-H.O.G.

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Re: evap rate during boild sub zero temps
« Reply #9 on: February 14, 2015, 05:12:16 PM »
Isn't boiling temperature 212 no matter what the ambient temperature is? Unless you're in Denver, of course.
boilg temp , sure. but i was wondering with the extreme cold and wind chills, if evap would increase.
Ken- Chagrin Falls, OH
CPT, U.S.Army
https://www.facebook.com/pages/Harveys-Brewhaus/405092862905115

http://braukaiser.com/wiki/index.php?title=The_Science_of_Mashing

Serving:        In Process:
Vienna IPA          O'Fest
Dort
Mead                 
Cider                         
Ger'merican Blonde
Amber Ale
Next:
Ger Pils
O'Fest

Offline ynotbrusum

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Re: evap rate during boild sub zero temps
« Reply #10 on: February 14, 2015, 05:25:25 PM »
Ken - no change at all?  I have noticed that humidity (lack thereof) has a little higher evaporative effect overall, but just a bit.
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Offline fmader

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Re: evap rate during boild sub zero temps
« Reply #11 on: February 14, 2015, 06:41:37 PM »
I don't think ambient temperatures would have any effect. 212 is 212. Ambient pressure would have more of an effect I would think. But then that might just have effect on boiling point.

It sure looks like it's blowing off more steam in the cold, but I think it's just more visible when it's -5 degrees than when it's 95 degrees. What's more mind boggling is how one location can have those same temperatures only several months a part lol.
Frank

Offline YooperBrew

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Re: evap rate during boild sub zero temps
« Reply #12 on: February 14, 2015, 06:45:51 PM »
Move south man! You can ride year round down here... Except for those few weeks in August  when the asphalt melts. Brewed today in lovely 70 degree weather!

You had me right up until "when the asphalt melts"! 

Yoopers don't "do" hot weather but I'm not crazy about the cold either.

One thing I've found is that I do boil off a lot more in the winter where I live.  However, we are in a fairly dry climate.  In the winter, the inside of my house reads 20% humidity on my hygrometer.  I boil off 2 gallons/hour then, while in the summer it's more like 1.25 gallons/hour, 


Offline fmader

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Re: evap rate during boild sub zero temps
« Reply #13 on: February 14, 2015, 06:54:52 PM »
Move south man! You can ride year round down here... Except for those few weeks in August  when the asphalt melts. Brewed today in lovely 70 degree weather!

You had me right up until "when the asphalt melts"! 

Yoopers don't "do" hot weather but I'm not crazy about the cold either.

One thing I've found is that I do boil off a lot more in the winter where I live.  However, we are in a fairly dry climate.  In the winter, the inside of my house reads 20% humidity on my hygrometer.  I boil off 2 gallons/hour then, while in the summer it's more like 1.25 gallons/hour,

Yeah, there's not enough baby powder on this planet to get me to move to the south lol
Frank

Offline Wort-H.O.G.

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Re: evap rate during boild sub zero temps
« Reply #14 on: February 14, 2015, 07:11:07 PM »
I don't think ambient temperatures would have any effect. 212 is 212. Ambient pressure would have more of an effect I would think. But then that might just have effect on boiling point.

It sure looks like it's blowing off more steam in the cold, but I think it's just more visible when it's -5 degrees than when it's 95 degrees. What's more mind boggling is how one location can have those same temperatures only several months a part lol.
^^^^^This is what i was thinking
Ken- Chagrin Falls, OH
CPT, U.S.Army
https://www.facebook.com/pages/Harveys-Brewhaus/405092862905115

http://braukaiser.com/wiki/index.php?title=The_Science_of_Mashing

Serving:        In Process:
Vienna IPA          O'Fest
Dort
Mead                 
Cider                         
Ger'merican Blonde
Amber Ale
Next:
Ger Pils
O'Fest