Dual coil chiller - Page 3 - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > DIY Projects > Chillers & Stir Plates > Dual coil chiller

Reply
 
Thread Tools
Old 07-31-2010, 12:42 AM   #21
rgray58
 
rgray58's Avatar
Recipes 
 
Jun 2010
Virginia
Posts: 78

I started down this path planning to buy a 50' roll of copper and build a chiller and pre-chiller. I asked questions about the length of each (25/25, 30/20, etc.) and all answers were to steer clear of a pre-chiller as being inefficient. I started research and found quite a bit of the same sentiment on this forum and others. I found a site (lost it now) that measured a relatively minor temp drop in water temp using a pre-chiller in an icebath. Most recommendations were similar. Running 70 degree water through a pre-chiller sitting at 32 degrees might get you down in the fifties or sixties. You then have a differential of cooling water in the fifties and wort at 100. Why not just pump the 32 degree water through your wort chiller for the greater temp differential which will give you a faster heat transfer rate? My plan is to use a $18 garden pump from Harbor Freight. Sit it in a bucket and connect to my not-yet-built dual chiller. Use a garden hose to keep the bucket full and start the pump. When the wort temp drop slows down significantly, start dumping ice into the bucket. When the chiller discharge gets down to garden hose temp, divert the discharge into the bucket and turn off the garden hose. Continue dumping ice until wort temp is where I want it.

 
Reply With Quote
Old 07-31-2010, 02:24 AM   #22
bendavanza
 
bendavanza's Avatar
Recipes 
 
Aug 2008
Oak CLiff, TX
Posts: 2,218
Liked 19 Times on 17 Posts


I made a dual 3/8" cooler with 1/2" feeding tees to split the coolant. My first attempt had a hop clog on my whirlpool plumbing so I have no cooling reports yet.
Click image for larger version

Name:	IMG_1250.jpg
Views:	456
Size:	44.2 KB
ID:	16675  

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Stainless coil chiller fittings? what to use? Rackerman Chillers & Stir Plates 7 10-25-2009 02:15 AM
Flash Chiller Coil Striker169 Equipment/Sanitation 9 09-29-2009 03:22 PM
Formula for coil size on wort chiller? MikeInCtown Chillers & Stir Plates 10 01-14-2009 03:57 AM
My two-coil chiller nostalgia Equipment/Sanitation 10 09-16-2008 12:09 PM
Dual buckets, dual spigots thedaler General Techniques 10 05-12-2007 09:12 PM


Forum Jump