Cooling wort

Discussion in 'General Brewing Discussions' started by 7 Slot Brewing, Aug 11, 2013.

  1. 7 Slot Brewing

    Joined:
    Jul 16, 2013
    Messages:
    147
    Likes Received:
    0
    Trophy Points:
    16
    Location:
    Syracuse, Utah
    So I was watching a Mythbusters the other night, and they were tasked with finding the quickest way to cool a 6 pack of beer. They did a regular cooler full of ice, a cooler full of ice water and salt, and then a fire extinguisher. After their testing it was determined that a fire extinguisher aimed at the 6 pack could cool it within about 30 seconds, going from room temp to 3X degrees. Obviously not practical, but could work in a pinch. So obviously I am not saying we should cool our wort that way, but it got me thinking about the ice water and salt since it was the second fastest at 5? minutes I think.

    So I did a 2.5 gallon boil the other night for my Oktoberfest. I have a large tall cube cooler that I use as the ice bath and typically use cubed ice and water. This time however, I got a block of ice, added a large amount of rock salt, and then added some water. I let that sit for about 20 minutes while finishing my boil. I didn't think about it, but I should have taken a temp reading, but I assume it was very cold. I lowered my kettle into this bath, and topped off with another bag of cubed ice, and then swirl the kettle every 7-8 minutes. This wort cooled the fastest out of any of my batches! Again I should have timed it, but it was definitely faster that previous cool downs. So on my next brew, which will be a full 5 gallon, I will take temp readings of the water before placing the kettle in, and also time it.

    Just thought I would let people know so they can try.
     
  2. Ozarks Mountain Brew

    Staff Member

    Joined:
    Nov 20, 2012
    Messages:
    7,767
    Likes Received:
    3,976
    Trophy Points:
    113
    Gender:
    Male
    Occupation:
    IT Managment
    Location:
    The Ozark Mountains of Missouri
    never thought about rock salt, great idea

    I have a 12 " plate chiller which in the summer doesn't get the temp down enough to ferment on its own so I decided to prechill my water before it reaches the plate chiller.

    I use a house carbon filter for my water connected to the hose closest to the water coming in to the house so I now submerge the filter into an ice bucket which seems to work but the ice melt very fast, that rock salt might help, thanks for the tip :)
     
  3. LarryBrewer

    LarryBrewer Active Member

    Joined:
    Jun 27, 2012
    Messages:
    1,728
    Likes Received:
    9
    Trophy Points:
    38
    Location:
    Portland, Oregon
    Indeed salt lowers the freezing temperature of water. Same reason the roads get salted in the winter.
     
  4. chessking

    chessking New Member

    Joined:
    Jul 8, 2012
    Messages:
    255
    Likes Received:
    2
    Trophy Points:
    0
    Location:
    Aurora, Colorado
    Don't forget homemade ice cream.
     
  5. 7 Slot Brewing

    Joined:
    Jul 16, 2013
    Messages:
    147
    Likes Received:
    0
    Trophy Points:
    16
    Location:
    Syracuse, Utah
    which is only second to beer...
     
  6. Nosybear

    Nosybear Well-Known Member

    Joined:
    Jul 16, 2012
    Messages:
    9,399
    Likes Received:
    6,638
    Trophy Points:
    113
    Location:
    Aurora, CO, USA
    I'm imagining circulating the salt-ice solution through a wort chiller.... Need a pump, though, another moving part to fail. But it would cool the stuff quickly! My wort chiller cools from boiling down to about 80 in a half-hour even with our warm tap water temps!
     
  7. Ozarks Mountain Brew

    Staff Member

    Joined:
    Nov 20, 2012
    Messages:
    7,767
    Likes Received:
    3,976
    Trophy Points:
    113
    Gender:
    Male
    Occupation:
    IT Managment
    Location:
    The Ozark Mountains of Missouri
    on 5 gallons mine will do that in 5 minutes, but I want 70 at least and at 11 gallons I'm using 50 gallons of water to do that buy its self.
    I was thinking there's got to be a better way; so doing the prechill works perfect.

    still use allot of water and $5 worth of ice though lol
     
  8. 7 Slot Brewing

    Joined:
    Jul 16, 2013
    Messages:
    147
    Likes Received:
    0
    Trophy Points:
    16
    Location:
    Syracuse, Utah
    you could recirculate it if you used a pump. that would cut down on the amount of water, but would require more ice I would think. but you could make your own blocks if you had the freezer space. hmmm, got me thinking of making something like this to move the water around the ice bath :|
     
  9. Ozarks Mountain Brew

    Staff Member

    Joined:
    Nov 20, 2012
    Messages:
    7,767
    Likes Received:
    3,976
    Trophy Points:
    113
    Gender:
    Male
    Occupation:
    IT Managment
    Location:
    The Ozark Mountains of Missouri
    yes I have a full size freezer hmmm
     
  10. Ozarks Mountain Brew

    Staff Member

    Joined:
    Nov 20, 2012
    Messages:
    7,767
    Likes Received:
    3,976
    Trophy Points:
    113
    Gender:
    Male
    Occupation:
    IT Managment
    Location:
    The Ozark Mountains of Missouri
    even a better idea, put a container in the freezer that holds the ice water and use the salt to keep it from totally freezing, then run the hose through it all and recirculate
     
  11. TheZel66

    TheZel66 Member

    Joined:
    Sep 22, 2012
    Messages:
    162
    Likes Received:
    5
    Trophy Points:
    18
    the fire extinguisher is the same as cooling a beer instantly by spraying compressed air on the bottle, while the air can is upside down...
     

Share This Page

arrow_white