Help Support Aussie Homebrewer by donating:

  1. We have implemented the ability to gift someone a Supporting Membership now! When you access the Upgrade page there is now a 'Gift' button. Once you click that you can enter a username to gift an account Upgrade to. Great way to help support this forum plus give some kudos to anyone who has helped you.
    Dismiss Notice

Herms Coil Inside A Kettle

Discussion in 'Gear and Equipment' started by kjparker, 3/1/12.

 

  1. kjparker

    Well-Known Member

    Joined:
    27/11/10
    Messages:
    416
    Likes Received:
    3
    Gender:
    Male
    Home Page:
    Posted 3/1/12
    Hi,

    I am looking to upgrade my brew rig to a herms setup, I already have the PID, PT100, SSR etc, just need to build the vessel.

    I recall reading a thread where someone built it inside the electric jug, but I cant seem to find it.

    anyone got a link?
     
  2. kelbygreen

    Crazy Clown

    Joined:
    28/11/09
    Messages:
    2,850
    Likes Received:
    21
    Gender:
    Male
    Home Page:
    Posted 3/1/12
    do you mean THIS one?
     
  3. kjparker

    Well-Known Member

    Joined:
    27/11/10
    Messages:
    416
    Likes Received:
    3
    Gender:
    Male
    Home Page:
    Posted 3/1/12
    Thats the one!

    Dont know how I missed it!
     
  4. Online Brewing Supplies

    **** OBS ****

    Joined:
    17/5/06
    Messages:
    4,740
    Likes Received:
    639
    Gender:
    Male
    Location:
    The Dean WA
    Home Page:
    Posted 4/1/12
    Like this one ? Made from S/S to fit exactly into a electric kettle.Certainly not ghetto @$65.00 but will be much easier to clean and no lead solder.
    Just done some Beta testing,not on my site yet but ready to go.


    Nev

    coil.JPG
     
  5. kjparker

    Well-Known Member

    Joined:
    27/11/10
    Messages:
    416
    Likes Received:
    3
    Gender:
    Male
    Home Page:
    Posted 4/1/12
    Very Nice.

    Tempting. Also takes out a lot of the hard work!
     
  6. yardy

    BI3V

    Joined:
    25/2/06
    Messages:
    3,065
    Likes Received:
    9
    Gender:
    Male
    Posted 4/1/12
    How many metres in that Nev ?
     
  7. Online Brewing Supplies

    **** OBS ****

    Joined:
    17/5/06
    Messages:
    4,740
    Likes Received:
    639
    Gender:
    Male
    Location:
    The Dean WA
    Home Page:
    Posted 4/1/12
    Yep thats what I thought no hard work and no green copper in my beer. We have done 100L batch using the kettle and similar coil (copper) and 40L batches with the S/S job. Stainless is just a tad slower ramp rate but thats not by much.
    Nev
     
  8. Online Brewing Supplies

    **** OBS ****

    Joined:
    17/5/06
    Messages:
    4,740
    Likes Received:
    639
    Gender:
    Male
    Location:
    The Dean WA
    Home Page:
    Posted 4/1/12
    You bugger, I havent worked it out but 9 coils at approx 95mm OD uprights are 1x 70mm and the other 240mm.
    If you work it out let me know . :D
    Nev
     
  9. kjparker

    Well-Known Member

    Joined:
    27/11/10
    Messages:
    416
    Likes Received:
    3
    Gender:
    Male
    Home Page:
    Posted 4/1/12
    by my calcs it's about 3m give or take a few cm
     
  10. the_new_darren

    Beer Dog

    Joined:
    19/9/11
    Messages:
    517
    Likes Received:
    2
    Home Page:
    Posted 4/1/12
    Nice, how you you keep the kettle at temp or is boiling constantly what you need?

    tnd
     
  11. kjparker

    Well-Known Member

    Joined:
    27/11/10
    Messages:
    416
    Likes Received:
    3
    Gender:
    Male
    Home Page:
    Posted 4/1/12
    You would use a PID to set the temperature. This is just the heat exchanger coil.
     
  12. the_new_darren

    Beer Dog

    Joined:
    19/9/11
    Messages:
    517
    Likes Received:
    2
    Home Page:
    Posted 4/1/12
    I thought about that but wondered what the heat transfer/flow rates in stainless would be and "perhaps" it would need to be boiling?
     
  13. kjparker

    Well-Known Member

    Joined:
    27/11/10
    Messages:
    416
    Likes Received:
    3
    Gender:
    Male
    Home Page:
    Posted 4/1/12
    wouldnt expect so, probably just take longer to reach temps. If you let the water boil, then you would no doubt massively overshoot your mash temps
     
  14. Online Brewing Supplies

    **** OBS ****

    Joined:
    17/5/06
    Messages:
    4,740
    Likes Received:
    639
    Gender:
    Male
    Location:
    The Dean WA
    Home Page:
    Posted 4/1/12
    No Its all controlled by a proprietary designed unit, which does the PID and sets up the mash profile and operates the pump, all at Beta at the moment.
    Just tweaking a few components ATM. Coils were made for the unit. Brewery in a Box.
    The water never goes near the boil, I does get warmer just as you ramp up to the next rest.
    More on this later. :ph34r:
    Nev
     
  15. the_new_darren

    Beer Dog

    Joined:
    19/9/11
    Messages:
    517
    Likes Received:
    2
    Home Page:
    Posted 4/1/12
    I would be interested to know the flow rate and at what temp the kettle needs to be.

    Nev, whats the ID of the tube?

    tnd
     
  16. Online Brewing Supplies

    **** OBS ****

    Joined:
    17/5/06
    Messages:
    4,740
    Likes Received:
    639
    Gender:
    Male
    Location:
    The Dean WA
    Home Page:
    Posted 4/1/12
    Ok I will arrange some one with a more scientific mind to answer the flow rates etc. Tube OD is 12mm and the wall thickness is 1-1.2mm, I dont have the callipers handy.
    Nev
     
  17. dent

    Under Pressure

    Joined:
    20/6/08
    Messages:
    954
    Likes Received:
    465
    Gender:
    Male
    Posted 4/1/12
    I've tested one of Nev's coils in a 40L herms batch - with a (roughly) 5 litre/minute flow rate, with a 2200W element going flat out in a 1.7L kettle, there was a maximum 15 degree difference between the water in the kettle and the wort coming out of the tube. It ramped up to the 77 degree mash out temp with no fuss.

    This is pretty similar to the results I have with a copper coil - Nev's coil offsets the stainless' heat transfer ability difference by having more turns of coil in a smaller area anyhow.
     
  18. the_new_darren

    Beer Dog

    Joined:
    19/9/11
    Messages:
    517
    Likes Received:
    2
    Home Page:
    Posted 4/1/12
    Sounds like the ducks nuts.

    I reckon this could be as revolutionary as BIAB for those who wish to advance into HERMS.

    cheers

    Darren
     
  19. Online Brewing Supplies

    **** OBS ****

    Joined:
    17/5/06
    Messages:
    4,740
    Likes Received:
    639
    Gender:
    Male
    Location:
    The Dean WA
    Home Page:
    Posted 4/1/12
    I believe this will be more compact more efficient, easier to use, pretty much a complete brewing system that you can buy complete or design your own unit much like putting together a customised computer on the Dell website. IE one 18B20 sensor for your mash and you can add another to control your HLT. I am hanging up my traditional 3V system after using this brewing system thats how much I like it.
    May have to change the name Brewery in a Box = BIAB. :p
    Any Ideas on name or what features you would like to add ?
    Nev
     
  20. AndrewQLD

    RED ON WHITE IPA

    Joined:
    12/3/04
    Messages:
    4,149
    Likes Received:
    306
    Gender:
    Male
    Home Page:
    Posted 4/1/12
    Looks great, nice and compact too.
    As for a name, why not call it what it is, a HERMS? Or are you talking about selling a complete brewing system, kettle, HLT and all, and are you selling a specially built controller as well?
    Noticed a thread about this recently HERMs and was wondering when some enterprising retailer would get around to making and supplying them, good on you.

    I'll be looking forward to seeing the pricing as I'd like to reduce the size of my HERMS.

    Andrew
     

Share This Page