Anyone use 1/2" OD copper tubing in CFC? - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Anyone use 1/2" OD copper tubing in CFC?

Reply
 
Thread Tools
Old 07-26-2009, 02:28 AM   #1
gigidogg
Recipes 
 
Feb 2008
Wilson, NC
Posts: 28
Liked 1 Times on 1 Posts



I've read the 27 pages of the "how to build a CFC" thread and it's all 3/8" OD tubing. I've already got ~40 feet of 1/2" OD and wonder if you could use it in a CFC with a regular 5/8" ID garden hose. Would 3/4" ID hose be better? Should I just buy the 3/8" copper and get it over with? Thanks in advance for the advice.
__________________
Primary: Hard Lemonade
Secondary: none
Kegged: Boddington's clone, Chocolate porter, pale ale

 
Reply With Quote
Old 07-26-2009, 02:56 AM   #2
vitoma
Recipes 
 
Apr 2009
Dayton, OH
Posts: 45

I believe the reason that 3/8" is used for the CFCs is because 1/2" doesn't give very much room for the cooling water to flow through.

 
Reply With Quote
Old 07-26-2009, 03:27 AM   #3
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
 
Bobby_M's Avatar
Recipes 
 
Aug 2006
Whitehouse Station, NJ
Posts: 23,245
Liked 1695 Times on 1089 Posts


If you used 3/4" ID garden hose, it should work fine if your coolant temp stays nice and cold.



CFC Configuration #1 3/8" OD Copper in 5/8" Hose
Wort Flow Cross Sectional Area 0.078
Coolant Flow Cross Sectional Area 0.196
Coolant to Wort Ratio 2.5

CFC Configuration #2 1/2" OD Copper in 5/8" Hose
Wort Flow Cross Sectional Area 0.149
Coolant Flow Cross Sectional Area 0.110
Coolant to Wort Ratio 0.7

CFC Configuration #3 1/2" OD Copper in 3/4" Hose
Wort Flow Cross Sectional Area 0.149
Coolant Flow Cross Sectional Area 0.245
Coolant to Wort Ratio 1.6
__________________
Welcome to BrewHardware.com. I love you.
Corny Keg Dry Hop Canisters $26.50 for limited time
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.


 
Reply With Quote
Old 07-26-2009, 10:58 AM   #4
Yorg
Recipes 
 
Jun 2007
Posts: 168
Liked 1 Times on 1 Posts


I use 1/2 inch with 3/4 outer hose.
If you use, or intend to use a pump, particularly the March that everyone uses, don't use 3/8. Too much internal resistance, so very Very low flow.
If you intend to keep using gravity then, yes, 3/8 has better surface area to volume BUT:
Assuming you intend to use a single pass through your CFC to your fermenter, and if you are going to brew lagers, especially all-grain, then you will be leaving most of your wort at high termperature for too long and forming DMS.
So:
Use a CFC if you are going to use a pump, and recirculate back to your boil kettle, therfore dropping all of your wort temp at the same time, before then diverting to your fermenter. Therefore use 1/2. Additional benefit of being able to whirlpool, and avoid taking break and hop to your fermenter.
Otherwise, use an IC.

 
Reply With Quote
Old 07-26-2009, 07:46 PM   #5
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
 
Bobby_M's Avatar
Recipes 
 
Aug 2006
Whitehouse Station, NJ
Posts: 23,245
Liked 1695 Times on 1089 Posts


Devil's advocate Yorg, if your coolant water is pretty close to your desired wort output temp, you'd have to throttle the flow of wort with a valve anyway. The only time you can run a 1/2" chiller full bore is if your coolant is 60F or less.
__________________
Welcome to BrewHardware.com. I love you.
Corny Keg Dry Hop Canisters $26.50 for limited time
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.

 
Reply With Quote
Old 07-26-2009, 09:27 PM   #6
B-Dub
Recipes 
 
Sep 2007
Central Coast
Posts: 544
Liked 9 Times on 7 Posts


Mine is 1/2" copper with 5/8" hose. The water coming out the CFC hose is cool and I still have to throttle back the pump.

Next week I am going to try to whirlpool through the CFC with the pump and water on full blast. I did this with water a month ago and it looked promising.

BW
__________________
www.bwbrewing.blogspot.com/

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
3/8" copper ref tubing - HERMS coil? kcinpdx Equipment/Sanitation 0 09-22-2009 02:52 PM
Copper tubing 25' 1/2" OR Wort chiller Elfmaze For Sale 0 07-03-2009 07:11 PM
50'- 1/2" copper tubing=$29.99 Pete08 Equipment/Sanitation 12 10-03-2008 08:45 AM
Copper Tubing Dominator6 Beginners Beer Brewing Forum 6 02-21-2008 04:21 AM
New to me copper tubing... Grimsawyer Equipment/Sanitation 1 07-19-2007 12:52 PM


Forum Jump