Immersion Chillers Vs Counterflow Chillers

[Andy]

The next time I looked at it the tube was FULL of fluffy protein ppt.

Now whilst this may have no effect on the finnished article, I don't like the idea of that stuff being in the fermenter with the yeast.

Don't forget, all commercial breweries use an industrial CFC and end up with the break in the fermenters.

[Garth]

I got that protein stuff too Vossy, in the trial jar on my second AG, my first was a stout so wouldn't have noticed it

Just by chance I took a picture, it did over about 30-40 mins sink to the bottom of the jar



It didn't spoil the beer at all that I could detect so I'm not really bothered now, but did like your self consider using a immersion

[steve_flack]

This may have been mentioned before but a guy that does a popular podcast on the Brewing Network, Jamil Zainasheff, has an interesting chiller idea. It's a cross between an immersion and a whirlpool. The whirlpool keeps the beer moving so heat removal is much better than usual.

You do need a pump though.

Here's the link http://www.mrmalty.com/chiller.php

BTW...isn't that a cool domain name?

[Vossy1]

Does anyone know or has anyone tested,

At what point on an immersion/cfc does the number of coils in the loop become unimportant.

Ie, at some point the exiting temp of the coolant will reach wort temp, by coil number x, so it's pointless having more coils in the system

Look at these shiny things, though only 4.5m.

http://cgi.ebay.co.uk/REMOTE-BEER-COOLE ... dZViewItem

[Andy]

Don't know but I did see some postings on rec.crafts.brewing about this type of thing and someone suggested having two separate (smaller) coils both fed from the same cooling supply as opposed to one huuuuuge coil (sory bertha!). Makes sense as obviously there will be a point at which the cooling water has heated up and is serving no additional benefit.

[Vossy1]

Hmmm, Just had a look at that sight Andy and I can see an improvement straight away.

Most posts are assuming only one feed in to the IC.

If the supply is standard garden hose, say 16mm bore with a good pressure you could make 2 coils (8 0r 10mm copper microbore) for the IC, split the feed in (at hlt entry) so each recieves a cold feed, and join the outlets together so there's only one outlet.

Sound reasonable

[Andy]

That's what they were discussing...

http://groups.google.co.uk/group/rec.cr ... 2b7a4ac4bd

[Vossy1]

I couldn't and still can't find any reference in that lot as to 2 seperately fed coils.

Doubling coil length yes.

Rubbing my shiny things is making me go blind

[Andy]

Another suggestion from there is to use a pre-chiller coil immersed in ice water to chill the immersion input water down. Perhaps you could use your HERMS H.E for this ? Fill the coolbox with ice water and divert the cooling input through the coils.

[TheBigEasy]

That's what this chap has done.

http://www.djlarrylive.com/Heat-Exchanger.html

[Vossy1]

Couldn't the use of 5mm microbore for an IC, drastically increase surface area and give increased heat exchange.

I would have thought that 3 smaller coils of this material fed by one inlet would be far more efficient that one 10mm coil.

[Andy]

(conicals are a great way of collecting yeast for repitching).

DaaB misses out the really key part....

THEY'RE SO DARN SHINY!

[Vossy1]

DaaB misses out the really key part....

THEY'RE SO DARN SHINY!

And so darn expensive

Though if I could I would

[Andy]

£280 for plastic which as we know doesn't shine!

[Vossy1]

Not shiny

Might aswell speak to the hand cause the face ain't listening

As Catherine Tate would say....how dare you

Andy, I think you should moderated DaaB's post...plastic, honestly, swearing on a shiny site