Optimum Length for a HERMS coil - Home Brew Forums
Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Optimum Length for a HERMS coil

Reply
 
Thread Tools
Old 09-06-2010, 03:11 PM   #1
dutch101st
Recipes 
 
Mar 2009
Roseville, CA, California
Posts: 227
Liked 1 Times on 1 Posts



My HERMS project is slowly coming along and I am getting to the point to where I need to build the heat exchange coil. I am going to go with 1/2 inch copper tubing (everything else is 1/2 inch) but I am not sure as to how long it needs to be.

Is there an optimum length for the HERMS coil?


__________________
Kegged: AIR
Primary: AIR
Secondary:
Secondary:

On Tap: NADA
Bottled: Store baught swill

Atomic Robot Brewing- Beware the Robot Uprising!!

http://robotarmageddon.com/wp-conten...t-Uprising.jpg

 
Reply With Quote
Old 09-06-2010, 04:23 PM   #2
Maltose
Recipes 
 
May 2010
Frederick, MD
Posts: 471
Liked 2 Times on 2 Posts


25' 1/2" seems to be the most popular.



 
Reply With Quote
Old 09-07-2010, 07:48 PM   #3
klyph
Recipes 
 
Dec 2009
North Pole, Alaska
Posts: 1,809
Liked 41 Times on 37 Posts


Depends on flow rate and temperature differential. I built mine with a 50 ft 1/2 inch coil, and it's MASSIVE overkill. 25' should work alright.
__________________
10 gallon electric system
Stovetop 110v single vessel 5 gallon system

Primary: saison
Secondary: nada
Conditioning: macaroon stout
Drinking: store bought

 
Reply With Quote
Old 09-07-2010, 07:53 PM   #4
drez77
Recipes 
 
Jan 2007
Palmer MA
Posts: 410
Liked 16 Times on 14 Posts


Mine is about 19' becaues that is all that woulf fit but my plan was to go with 25'. klyph is right that the flow rate has a lot to do with it.

 
Reply With Quote
Old 09-07-2010, 08:38 PM   #5
Douglefish
Recipes 
 
Dec 2008
Posts: 245
Liked 1 Times on 1 Posts


I've got 1/2" and it's about 22'-23' with the fittings. I was worried about it being too short, but it works really well. I went ahead and put a a 5500W electric element in the HLT and I can step and heat water pretty fast.

I do 10 gallon batches and put my strike water in my MT and my Sparge water in my HLT and the turn on the HERMS and start recirculating. I can heat all the water that I need for the brew day up in about 35-40 mins (summer time).

 
Reply With Quote
Old 09-08-2010, 01:01 AM   #6
dutch101st
Recipes 
 
Mar 2009
Roseville, CA, California
Posts: 227
Liked 1 Times on 1 Posts


I will have to be going with 20 feet of 5/8...I am already having some problems getting the coil done without any kinks...wasted about 20 feet just trying to wrap around a corny keg.

I also had to redo the compression fittings, one of which is defective (my fault for getting an open package). So far the HERMS coil has been the biggest challenge to this project.


__________________
Kegged: AIR
Primary: AIR
Secondary:
Secondary:

On Tap: NADA
Bottled: Store baught swill

Atomic Robot Brewing- Beware the Robot Uprising!!

http://robotarmageddon.com/wp-conten...t-Uprising.jpg

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
HERMS coil size TommyBoy Equipment/Sanitation 11 04-05-2014 04:59 PM
HERMS Coil... Stevorino Equipment/Sanitation 21 01-30-2009 10:22 PM
HERMS Coil 3/8 vs. 1/2" BrewSapiens Equipment/Sanitation 10 04-07-2008 06:51 AM
Optimum length for CFC? mcaustin Equipment/Sanitation 1 04-27-2007 08:42 PM
3/8" adequate for HERMS coil? JoeRags Equipment/Sanitation 3 03-12-2007 01:18 PM


Forum Jump