20ft CF Chiller?

[Dirty]

Is 20 Foot too short. Money is tight and dont want to spring for the extra 30 feet if ill never use it. Summer time tap water is about 75. Just wondering if thats enough.

Thanks

Rock Chalk

Chris

 

[P-J]

Short answer - Yes. In 3/8" and 1/2" OD copper tubing with decent flow rates, temperature equilibration should happen within the first 12 to 14'.

 

[Dirty]

Thanks PJ

If the outer sheath is a hose and inner copper is 3/8th. Will i get the same effect?

Chris

 

[P-J]

Yes.

 

[Dirty]

Thanks PJ

 

[P-J]

Just a little more info about it.

Turbulence in the CFC? Here's the facts -
(Excerpts from an article at The Brewery.org)

" ~~ turbulent flow is achieved in a 1/2 " tube at .11 m/sec, in a 3/8" tube at .14 m/sec, and in a 1/4 " tube at .22 m/sec, which quite simply means in each case:

*put 5 gallons through your (1/2":3/8":1/4") exchanger in under (22:31:46) minutes and you have turbulent flow*, (Charlie's Law)

The overall coefficient of transfer jumps from about 1.25 KW/m² K to about 12.5 KW/m² K ! Fast flow systems rule,~~~ "