Possible Glycol Chiller? - Page 2 - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Possible Glycol Chiller?

Reply
 
Thread Tools
Old 12-05-2006, 04:05 PM   #11
disaffected
Recipes 
 
Aug 2006
Posts: 829
Liked 6 Times on 6 Posts


Use propylene glycol instead of ethylene glycol. Propylene glycol is less toxic, and is even used in pharmaceuticals and as a food additive. Of course, you wouldn't want to ingest large quantities of it anyway. It would probably make your beer taste terrible.

If the part of the system that is immersed in the wort is sealed, as in a copper tube, only severe damage to the copper pipe (a hole or a crack) would be a cause for concern. A length of copper tubing without fittings isn't going to leak PG or EG.

 
Reply With Quote
Old 12-05-2006, 04:27 PM   #12
Brewpastor
Beer, not rocket science
HBT_LIFETIMESUPPORTER.png
 
Brewpastor's Avatar
Recipes 
 
Feb 2006
Corrales, New Mexico
Posts: 4,575
Liked 37 Times on 31 Posts


"Food Grade" gylcol is the way to go. A simple chiller can be made utilizing an existing freezer, a plastic bucket, a submersable pump, a Ranco Temperature Controller, a chilling coil and some tubing. Fill your bucket with your glycol, attach the pump to to the tubing that loops through chilling coil in your towers or fermenter and back into the glycol bucket, plug the pump into your temperature controller with the controller's probe being placed in a cold-well in the fermenter or tower, place the bucket in the bottom of your freezer, set the controller to the temperature you desire and enjoy.
__________________
Before I learned to brew I was poor, sober and lonely. Now I am just poor.

 
Reply With Quote
Old 12-05-2006, 06:33 PM   #13
disaffected
Recipes 
 
Aug 2006
Posts: 829
Liked 6 Times on 6 Posts


You can get food grade propylene glycol at The Chemistry Store for $17.88 per gallon. I just ordered another gallon for my humidor, and I mix it 50:50 with distilled water. A gallon lasts me a really long time for my humidor, and it is far more economical to buy it this way than to buy a 50:50 solution for $10 a pint from my tobacconist. Shipping from SC to TX was $10.61 UPS ground. They charge a $3 handling fee, so my total cost was about $31 for a gallon.

The price is $16.05 a gallon if you buy five gallons. That's probably a more reasonable quantity for a refrigeration system. Or, you can get 55 gallons for a mere $759 ($13.80 a gallon).

If you're going to use it in a refrigeration system, be aware that the food grade product doesn't have any additives to prevent corrosion build up in your plumbing system. Pay a few pennies more and get the version that has corrosion inhibitors added to it. Remember, the glycol runs through a closed system. It isn't going to get in your beer.

 
Reply With Quote
Old 12-06-2006, 02:45 AM   #14
Bsquared
HBT_LIFETIMESUPPORTER.png
 
Bsquared's Avatar
Recipes 
 
Oct 2006
San Diego
Posts: 1,850
Liked 66 Times on 59 Posts


Okay I'm a little confused on why you would want to use even food grade Glycol? Maybe I'm missing the point, but If the goal is to keep your fermentation at a desired temperature between 45-65F why not just use deionized water. Pure water has a larger heat capacitance than a Glycol:water mix, so you would be moving more heat/liter if you just used water

 
Reply With Quote
Old 03-20-2013, 05:26 AM   #15
mpcluever
Recipes 
 
Jun 2010
here
Posts: 635
Liked 39 Times on 34 Posts


Resurrecting the dead here, but came across this on Google. You use glycol because the cooling coils will freeze up using water even though the rest of the solution is above freezing. I have an air conditioner in the glycol bath and even that gels up a bit. When we tested it with water, it froze up somewhere when the bath approached freezing, but not quite. I should also point out that we're chilling multiple fermenters so we want it fairly cold and we're running coils outside the fermenter so toxicity really wasn't an issue for us. For a single fermenter, you could certainly run plain water above freezing the coils up.

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Home Made Glycol Chiller from A/C unit terrazza Equipment/Sanitation 25 04-22-2016 12:05 AM
Glycol Chiller DIY Ideas trailblazer Fermentation & Yeast 4 10-05-2009 04:48 PM
The glycol froze bashe Equipment/Sanitation 7 06-09-2009 02:46 AM
To glycol or not Brewme Bottling/Kegging 15 12-30-2008 04:12 PM
Propylene Glycol? sonvolt Recipes/Ingredients 4 12-13-2006 07:45 PM


Forum Jump