How to build a Twin Coil Immersion Chiller for under £50!
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- Опубликовано: 26 авг 2024
- #homebrew #immersionchiller #howto
How I built a twin coil immersion chiller using basic tools and a few bits from screwfix/b&q, works a treat!
Parts list:
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Great vid. I’m a plumber and will be doing this but with 10mm copper pipe. Thanks!
You should create gaps between the coil "levels" by intermittently tieing a small piece of copper wire in figure 8 between one level and the one above (one per turn, then one up on the opposite side, then one up opposite and so on).. This effectively stabalises and fixes the coil, and simultaneously opens a gep between each level, therefore increasing exposed surface area by around 20 to 25 percent... Not to be sniffed at!
thanks I agree this would be a good modification to the design, if and when I need to build another I will definitely try this!
For tight bends that don't kink, try filling with water and freezing it. It can expand the copper very slightly so fit connections before you do. Ideal project for the winter! Twin coil is a good idea because there is a point where the inner water is as hot as the outside, so any extra pipe length is useless.
Thanks for this video, taken a while to bend the pipes without kinking them and to make the joins watertight but really enjoyed making this and looking forward to trying it out!
Glad you enjoyed it!
Thanks again! Used it over the weekend and was amazed at the efficiency: 20L of wort at 100°C down to 20°C in 6mins 30secs!!!
Top job Dude... my double wort chiller is bang on too. 12 mins. Good times.
Great work fella. Awesome tutorial 👍🏼
10 mins is very very good. Great vid
Nice build, I changed my hose fittings to brass as the heat transfer started to melt the plastic ones. cheers
Absolutely bang on Dude, I am definitely going to make something very similar. Being on its side it just looks like it will be super efficient.
cheers keith, I have plans for a new and improved mk2 version that I am going to build for a friend so a short follow up video may be coming soon!
Nice workmanship
Wow ten min??! That’s awesome. Fastest I’ve been able to do is 25 min with a regular immersion coil. Nice build. I like your pipe bender too. Cheers great vid🍻
thanks I was really pleased with the time too! The pipe bender worked great as long as I only did 1 bend at a time, easier than the springs that go inside the pipes
I bet that you made many of this coil earlier bcz your wirk is professional
Sweet build!
The Crafty Will Survive. Nice job.
Wow very impressive mate, well done 👍🏻
Great work Dude, 10m to pitching temp, brilliant.
A very good how to video mate i think you did a cracking job there well done sir , thanks Ivan
nice job there buddy glad it worked out well for you
U can get a 15mm equal tee. And 2 15mm to 8 mm reducer olives. Maybe not from screwfix but definitely a plumber merchant
thanks for the tip, I wasn't aware of those. Might be worth trying if I do another one
Good idea coupled with a ,50,00 Euros peltier chiller for DWC main tank indoor grows !
Nice little chiller there top job cheers
10 mins awesome
Nice vid El Duderino
Looks awesome buddy! Nice work!
Awesome pal, you should make these for people, make a few extra pennies for supplies
I wonder if you could use a couple of turns less in each coil. This would allow for a few millimetres of space between each coil, which might help cooling efficiency and allow for more thorough cleaning between uses. Just a thought. Otherwise, a terrific (and novel!) design.
thanks cleaning is a bit tricky with the coils that tight together so you make a good point, Im not sure how much of an impact on the cooling efficiency it would have but I am also thinking of putting a bit of space between the inner and outer coils on my next version to allow more flow between them that way too. Probably be building mk2 for a friend shortly so an update video may be coming up soon...
How is it to wash the outside? Usually made one-way (I have one) so that it was possible to wipe everything with a washcloth. Next: during cooling, the wort is hot at the top, not at the bottom, so you need to raise the chiller under the surface. Fittings are unnecessary - there are hard to reach places for washing. It is not desirable to take out in the cold, because there is no possibility to drain the water. The best option would be a clockwise chiller located directly below the surface of the wort. (Google translator)
Great vid👍
Great job - but... Correct me if I’m wrong, but wouldn’t a single 20m coil be just as efficient and a whole load less faff?
It would probably be the same efficiency theoretically and certainly less faff but the coil would be very long so I wouldn't be able to put it on its side and if it was stood up a lot of it would be out of the wort, you could make the diameter of the coils bigger but then I'd have other issues with it hitting the elements, filters etc inside the pot and on its side again it wouldn't be fully submerged. So in short the split coils were necessary to get that much copper into a package small enough to fit the kettle comfortably and be fully submerged in the wort for a typical 19-23L batch
Built this as per your parts list and guide today. Thanks for designing and sharing this. Have you changed much since your first version, or moved on to something different? Looking forward to testing it on a brew day.
Never mind, just saw the twinchilla! I made some of those changes myself already when making this (used two different sized paint pots). Wouldn't fancy the soldering!
You did a great job!
Great vid and a great result, I must be doing something wrong as my chilling takes 45 minutes. Do you have quite a fast flow rate of water, my flow rate fills a 30l fermenter in about 30 mins!
I'd say its definitely faster than that so that could well be part of the problem, are you stirring or circulating the wort somehow? This makes a big difference as well
Thanks Matey, I will try a faster flow but I guess that will use more water, with your new cooler how much water did you use roughly. I do stir but only 10 minutes or so, think I need to be doing more of that as well!
I didn't measure the amount of water used unfortunately but I would guess it must have been more than 30L at the rate it was going, there will always be a bit of a trade off I guess between flow rate and speed of cooling but more stirring will definitely help as well
Ive been thinking of doing a Better chiller myself. Nice build! Whats up with the buckets hanging on the fermenter taps? Cheers!
thanks DrH, those are pressure barrels in the background the little buckets just there to catch drips from the taps after I have poured a beer from them
Would it not be better to ensure the inlet part of the coil is near the top of the hot wort...? My reasoning being you want the coldest water to target the hottest wort. Heat rises/cold drops. Reducing the need for stirring. The sooner your flowing water picks up heat the better? This is why is also try to get some space between the coils increase the surface area some more, as we're all limited by mains pressure water. Lastly.. if your inlet and outlet fit neatly into a notched lid bacteria and other nasties will have an extra barrier to get around.
I've seen no chill methods used in sealed containers that is time consuming but considered safe. A bit like anyone who makes jam.
Thoughts and opinions please, credit to the dude in the video for his great tutorial though.
Thanks for your thoughts Adam, there are mixed opinions on inlet at the top or bottom but most people agree the difference is marginal and in this case as the coolant circulates from top to bottom as it goes round (because its on its side) its really a moot point anyway. Stirring will always make the chiller work much more efficiently regardless of which way round you have inlet and outlet. I agree about a bit of space between the coils and will be adding this to version 2 it will also making cleaning easier as well. I am thinking about fitting a whirlpool pump at some point which will mean I can put notches in the lid as you suggest and keep it sort of sealed during cooling. Until then though the risk of infection from being open during cooling is fairly minimal (based on my experience so far at least) so while its not totally ideal for now I would rather stir with an open vessel and have the faster cooling time.
Cheers and thanks again for the feedback
Thanks for your reply and the additional info. I get why you say it's a moot point now! Glad you plan on adding some spacing, look forward to seeing how you tackle that. I've seen some pretty horrid looking examples already... the bar hasn't been set very high. I look forward to seeing your whirlpool addition and Wort ChillerV2. Hoppy Brewing!
That's proper good that! You should sell them!
I dont know how you did that without crimping the pipe. When i did something similar i put the pipe under water. Crimped the two ends. The water inside stopped it from collapsing
Hello question how many liters of water goes through the chiller? do you dump it down the drain or have it tank off for later use?Great video by the way.
thanks! I have never actually measured how much goes through it for a full run but its quite a lot, I will normally collect a buckets worth of the hottest water at the start to be used for cleaning but after that most of it goes down the drain to be honest. I think any form of heat exchange cooling with water is going to be a bit wasteful but at least the shorter time means its a bit more efficient!
@@DudesBrews I had a quick look average tap flows can be anywhere between 8 - 40 liters per minute I did a full flow test on my kitchen tap and got 7 liters per minute, so that would mean 70 liters to cool down the wort.
Crazy amount of water roughly half the UK national average per person per day. I think when I eventually graduate to all grain I will make a return tank for the chiller and maybe even go 3 to 4 spirals, hahaha. Cheers again and happy brewing
Why don't you take off the insulation foam while chilling the wort? Great design anyway...
odourofoutdoor that would probably help lol! Tbh it’s a bit of a ball ache getting it on and off so I just leave it
How's this chiller working? (Speed wise of chilling)
about 8mins or less in winter for 23L batch
Will be fun to clean lol
surprisingly easy actually, straight into a bucket with the saved warm water from chilling and some sodium percarbonate. Soak and splash around in that for 5-10mins and then hose it off, no gunk build up or other issues for me with that method
What was the temp of the water going into the chiller coils?
I don't know for sure but at the time of year I did that video I'm guessing somewhere between 12-16c
Why are you calling your compression ferules olives?
Thats what we call them in the UK
Доброго времени суток! Помогите собрать пивоварню, живу в России средств нет.
I stopped watching when you broke out the plastic and brass fittings. Stainless and or copper are available
Like:)
tees made of brass, it's not at all good
most people consider the risk from brass fittings to be extremely low and in this case where they are only in the boil for a very short time that problem is even less of a concern, having said that my newer version uses soldered copper tees so its a moot point now anyway
the idea of course is good. I'm going to make a chiller, I choose the options. but I want to do without fittings and soldering, from a single piece of pipe. Now I think how to combine your and my idea.
Good luck! Its doable but will require some elaborate pipe bending, you might need a proper pipe bender tool to get a compact and neat finish.
pipe bender is available. I must carefully consider the configuration