Therminator, Ice Water, Whirlpool... question - Page 15 - Home Brew Forums

 Home Brew Forums > Therminator, Ice Water, Whirlpool... question

01-19-2010, 11:49 PM   #141
lschiavo

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Sep 2009
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Quote:
 Originally Posted by The Pol Yeah 44 pounds is A LOT... You also have to look at the temp. of the ice. Ice is colder than 32F, so you use calories to heat the ice TO 32F, then more calories to MELT it, then even more calories to HEAT it to say 50F.
Well 44lbs is only about 5 gallons. If its winter and you have a big freezer outdoors thats not hard.

check out this site if want to do some calculations (maybe it will help with your new build):

http://www.3dplumbing.net/ontplumbing/latent_heat.htm

ice 0 to 32 = 16BTU/lb
ice 32 to water = 144BTU/lb

the state change gives most of the cooling capacity.

By the way, I was impressed with your old rig. Yooper even showed me the magazine article (BYO?). I gotta get over and check out a brew day with it.

01-20-2010, 12:47 AM   #142
The Pol
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Feb 2007
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Quote:
 Originally Posted by lschiavo Well 44lbs is only about 5 gallons. If its winter and you have a big freezer outdoors thats not hard. check out this site if want to do some calculations (maybe it will help with your new build): http://www.3dplumbing.net/ontplumbing/latent_heat.htm ice 0 to 32 = 16BTU/lb ice 32 to water = 144BTU/lb the state change gives most of the cooling capacity. By the way, I was impressed with your old rig. Yooper even showed me the magazine article (BYO?). I gotta get over and check out a brew day with it.
Thanks, yes I calculated the ice as 5 gallons volume in the old rig. Though, once it is cubed, it ends up taking up MUCH more volume. A solid block will not cool as effectively due to the greatly reduced surface area.

I am glad she is enjoying it, I learned a lot building that thing!