Paradox
©
Fisana

Jump to content


Photo
- - - - -

Dipole's C&D Fermentation Chiller


  • Please log in to reply
6 replies to this topic

#1 Dipole

Dipole

    Legalize Cannabis

  • OG VIP
  • 3,388 posts

Donator


Awards Bar:

Posted 14 June 2020 - 03:02 PM

I was intrigued when I saw this Thermoelectric Aquarium Cooler unit for sale, ~$65USD.

Also a brushless magnetically isolated water pump, $7.

Fermentaion Chiller (8).jpg

 

The idea is to chill a carboy of fermenting beer in a larger ice tub full of water.

The pump will circulate the water through the cooler.  Everything runs on 12VDC.

So I found a 350W 12V power supply for $24, Meanwell brand.

An old Dayton thermostat closes the loop.  It is a purely mechanical, 120VAC switch.

Fermentaion Chiller (7).jpg

 

A close up of the chiller.

Fermentaion Chiller (3).jpg

 

I wired it all up using a terminal strip and fork connectors.

Fermentaion Chiller (4).jpg

 

I threw in a couple of 5W potentiometers for speed control of the pump and cooler fans.

Fermentaion Chiller (6).jpg

 

I am running the pump as slow as the potentiometer will allow.  The pot gets hot instead of the water vat.  The cooler fans run full speed, they are very quite.  The fan in the Meanwell power supply is much noisier.

 

I confirmed the system worked using a jar of water.

Fermentaion Chiller (5).jpg

 

The copper thing is the thermometer probe for the thermostat.

The real setup before all the insulation was put into place.

Fermentaion Chiller (2).jpg

 

In action with a 5 gallon batch of apple cider.

Fermentaion Chiller (1).jpg

 

I is currently running at 61degF.  I need more insulation.

The chiller pulls around 100W and provides 40W max of cooling power.

I have of get the heat loss down to a few watts.

 

I will be brewing a brown ale in a couple of weeks, and I have to have this system ready for it.


Edited by Dipole, 14 June 2020 - 03:05 PM.

  • YoshiTrainer likes this

#2 Myc

Myc

    El Jardinero

  • App Administrator
  • 7,798 posts

Awards Bar:

Posted 14 June 2020 - 04:18 PM

Pretty slick idea.

Much cheaper than a glycol system.

 

Best of luck with your beer.



#3 YoshiTrainer

YoshiTrainer

    Onion tied to belt

  • Gold VIP
  • 1,283 posts

Awards Bar:

Posted 14 June 2020 - 04:39 PM

Cool idea and great work Dipole, it'll be interesting to see this in action. Are you trying to maintain ale or lager temps?

#4 Dipole

Dipole

    Legalize Cannabis

  • OG VIP
  • 3,388 posts

Donator


Awards Bar:

Posted 14 June 2020 - 05:56 PM

I am currently brewing ales at 60F if I can.  I have also been brewing cider at the same temps.

Now the summer heat has kicked in.  The need for insulation is very real.

When the cooler is good for only 30W in a hot room, 40W in a cooler room,

every watt of heat trickling into the vat cuts into the duty cycle time of the cooler.

I would like to get it down to 25%.  I am way over that right now.  ~66%

 

I would like to brew lagers again, probably around 48F.

There are so many yeasts to choose from too these days.

Homebrewing supplies have come a long way since 1979 when I first got interested in brewing.

However, lagering is cold aging at just above freezing for a couple of months.

I do not have any way of doing that at the moment.

Holding a 6 pack in the refrigerator for a couple months makes for sparkling clear beer.


  • Myc likes this

#5 Myc

Myc

    El Jardinero

  • App Administrator
  • 7,798 posts

Awards Bar:

Posted 14 June 2020 - 06:13 PM

So many yeasts........so little time.

 

I have a modest live yeast bank if you need some lager strains. Just lemme know. ;)


  • Dipole likes this

#6 Dipole

Dipole

    Legalize Cannabis

  • OG VIP
  • 3,388 posts

Donator


Awards Bar:

Posted 16 June 2020 - 03:06 PM

How do you store live yeast?



#7 Myc

Myc

    El Jardinero

  • App Administrator
  • 7,798 posts

Awards Bar:

Posted 16 June 2020 - 05:00 PM

I pour YPDA slants and use an inoculation loop to distribute slurry onto the agar surface.

 

You can just "wash" the slant with wort when you're ready to propagate larger batches.

Transfers every 6 months for continuity of viability.

Stored in the refrigerator, of course.


Edited by Myc, 16 June 2020 - 05:01 PM.





Like Mycotopia? Become a member today!